/* * Copyright (C) Volition, Inc. 1999. All rights reserved. * * All source code herein is the property of Volition, Inc. You may not sell * or otherwise commercially exploit the source or things you created based on the * source. * */ #include #include "asteroid/asteroid.h" #include "cmdline/cmdline.h" #include "debris/debris.h" #include "debugconsole/console.h" #include "freespace.h" #include "gamesnd/gamesnd.h" #include "globalincs/linklist.h" #include "graphics/color.h" #include "hud/hudets.h" #include "hud/hudmessage.h" #include "hud/hudshield.h" #include "iff_defs/iff_defs.h" #include "io/timer.h" #include "lighting/lighting.h" #include "lighting/lighting_profiles.h" #include "math/fvi.h" #include "math/staticrand.h" #include "nebula/neb.h" #include "mod_table/mod_table.h" #include "network/multi.h" #include "network/multimsgs.h" #include "object/objcollide.h" #include "object/object.h" #include "object/objectshield.h" #include "parse/parselo.h" #include "scripting/global_hooks.h" #include "scripting/scripting.h" #include "scripting/api/objs/vecmath.h" #include "particle/particle.h" #include "playerman/player.h" #include "render/3d.h" #include "ship/ship.h" #include "ship/shipfx.h" #include "ship/shiphit.h" #include "weapon/beam.h" #include "weapon/weapon.h" #include "globalincs/globals.h" #include "globalincs/vmallocator.h" #include "tracing/tracing.h" // ------------------------------------------------------------------------------------------------ // BEAM WEAPON DEFINES/VARS // // this is the constant which defines when a beam is an "area" beam. meaning, when we switch on sphereline checking and when // a beam gets "stopped" by an object. It is a percentage of the object radius which the beam must be wider than #define BEAM_AREA_PERCENT 0.4f // randomness factor - all beam weapon aiming is adjusted by +/- some factor within this range #define BEAM_RANDOM_FACTOR 0.4f #define MAX_SHOT_POINTS 30 #define SHOT_POINT_TIME 200 // 5 arcs a second #define TOOLTIME 1500.0f std::array Beams; // all beams beam Beam_free_list; // free beams beam Beam_used_list; // used beams int Beam_count = 0; // how many beams are in use // octant indices. These are "good" pairs of octants to use for beam target #define BEAM_NUM_GOOD_OCTANTS 8 int Beam_good_slash_octants[BEAM_NUM_GOOD_OCTANTS][4] = { { 2, 5, 1, 0 }, // octant, octant, min/max pt, min/max pt { 7, 0, 1, 0 }, { 1, 6, 1, 0 }, { 6, 1, 0, 1 }, { 5, 2, 0, 1 }, { 0, 7, 0, 1 }, { 7, 1, 1, 0 }, { 6, 0, 1, 0 }, }; int Beam_good_shot_octants[BEAM_NUM_GOOD_OCTANTS][4] = { { 5, 0, 1, 0 }, // octant, octant, min/max pt, min/max pt { 7, 2, 1, 0 }, { 7, 1, 1, 0 }, { 6, 0, 1, 0 }, { 7, 3, 1, 0 }, { 6, 2, 1, 0 }, { 5, 1, 1, 0 }, { 4, 0, 1, 0 }, }; // debug stuff - keep track of how many collision tests we perform a second and how many we toss a second #define BEAM_TEST_STAMP_TIME 4000 // every 4 seconds int Beam_test_stamp = -1; int Beam_test_ints = 0; int Beam_test_ship = 0; int Beam_test_ast = 0; int Beam_test_framecount = 0; // beam warmup completion % #define BEAM_WARMUP_PCT(b) ( ((float)Weapon_info[b->weapon_info_index].b_info.beam_warmup - (float)timestamp_until(b->warmup_stamp)) / (float)Weapon_info[b->weapon_info_index].b_info.beam_warmup ) // beam warmdown completion % #define BEAM_WARMDOWN_PCT(b) ( ((float)Weapon_info[b->weapon_info_index].b_info.beam_warmdown - (float)timestamp_until(b->warmdown_stamp)) / (float)Weapon_info[b->weapon_info_index].b_info.beam_warmdown ) // link into the physics paused system extern int physics_paused; // beam lighting info #define MAX_BEAM_LIGHT_INFO 100 typedef struct beam_light_info { beam *bm; // beam casting the light int objnum; // object getting light cast on it ubyte source; // 0 to light the shooter, 1 for lighting any ship the beam passes, 2 to light the collision ship vec3d c_point; // collision point for type 2 lights } beam_light_info; beam_light_info Beam_lights[MAX_BEAM_LIGHT_INFO]; int Beam_light_count = 0; float b_whack_small = 2000.0f; // used to be 500.0f with the retail whack bug float b_whack_big = 10000.0f; // used to be 1500.0f with the retail whack bug float b_whack_damage = 150.0f; DCF(b_whack_small, "Sets the whack factor for small whacks (Default is 2000f)") { dc_stuff_float(&b_whack_small); } DCF(b_whack_big, "Sets the whack factor for big whacks (Default is 10000f)") { dc_stuff_float(&b_whack_big); } DCF(b_whack_damage, "Sets the whack damage threshold (Default is 150f)") { if (dc_optional_string_either("help", "--help")) { dc_printf("Sets the threshold to determine whether a big whack or a small whack should be applied. Values equal or greater than this threshold will trigger a big whack, while smaller values will trigger a small whack\n"); return; } dc_stuff_float(&b_whack_damage); } // ------------------------------------------------------------------------------------------------ // BEAM WEAPON FORWARD DECLARATIONS // // delete a beam void beam_delete(beam *b); // handle a hit on a specific object void beam_handle_collisions(beam *b); // fills in binfo void beam_get_binfo(beam* b, float accuracy, int num_shots, int burst_seed, float burst_shot_rotation, float per_burst_shot_rotation); // aim the beam (setup last_start and last_shot - the endpoints). also recalculates object collision info void beam_aim(beam *b); // direct fire type functions void beam_type_direct_fire_move(beam *b); // slashing type functions void beam_type_slashing_move(beam *b); // targeting type functions void beam_type_targeting_move(beam *b); // antifighter type functions void beam_type_antifighter_move(beam *b); // stuffs the index of the current pulse in shot_index // stuffs 0 in fire_wait if the beam is active, 1 if it is between pulses void beam_type_antifighter_get_status(beam *b, int *shot_index, int *fire_wait); // normal firing type functions void beam_type_normal_move(beam *b); // given a model #, and an object, stuff 2 good world coord points void beam_get_octant_points(int modelnum, object *objp, int oct_index, int oct_array[BEAM_NUM_GOOD_OCTANTS][4], vec3d *v1, vec3d *v2); // given an object, return its model num int beam_get_model(object *objp); // for rendering the beam effect // output top and bottom vectors // fvec == forward vector (eye viewpoint basically. in world coords) // pos == world coordinate of the point we're calculating "around" // w == width of the diff between top and bottom around pos void beam_calc_facing_pts(vec3d *top, vec3d *bot, vec3d *fvec, vec3d *pos, float w, float z_add); // render the muzzle glow for a beam weapon void beam_render_muzzle_glow(beam *b); // generate particles for the muzzle glow void beam_generate_muzzle_particles(beam *b); // throw some jitter into the aim - based upon shot_aim void beam_jitter_aim(beam *b, float aim); // if it is legal for the beam to continue firing // returns -1 if the beam should stop firing immediately // returns 0 if the beam should go to warmdown // returns 1 if the beam can continue along its way int beam_ok_to_fire(beam *b); // start the warmup phase for the beam void beam_start_warmup(beam *b); // start the firing phase for the beam, return 0 if the beam failed to start, and should be deleted altogether int beam_start_firing(beam *b); // start the warmdown phase for the beam void beam_start_warmdown(beam *b); // add a collision to the beam for this frame (to be evaluated later) void beam_add_collision(beam *b, object *hit_object, mc_info *cinfo, int quad = -1, bool exit_flag = false); // mark an object as being lit void beam_add_light(beam *b, int objnum, int source, vec3d *c_point); // apply lighting from any beams void beam_apply_lighting(); // recalculate beam sounds (looping sounds relative to the player) void beam_recalc_sounds(beam *b); // apply a whack to a ship void beam_apply_whack(beam *b, object *objp, vec3d *hit_point); // if the beam is likely to tool a given target before its lifetime expires int beam_will_tool_target(beam *b, object *objp); // ------------------------------------------------------------------------------------------------ // BEAM WEAPON FUNCTIONS // // init at game startup void beam_init() { beam_level_close(); } // initialize beam weapons for this level void beam_level_init() { // intialize beams int idx; Beam_count = 0; list_init( &Beam_free_list ); list_init( &Beam_used_list ); Beams.fill({}); // Link all object slots into the free list for (idx=0; idxweapon_info_index >= 0); if (b->weapon_info_index < 0) { return -1.0f; } // lookup for (idx = 0; idx < Weapon_info[b->weapon_info_index].b_info.beam_num_sections; idx++) { if (Weapon_info[b->weapon_info_index].b_info.sections[idx].width > widest) { widest = Weapon_info[b->weapon_info_index].b_info.sections[idx].width; } } // return return widest; } // return false if the particular beam fire method doesn't have all the required, and specific to its fire method, info bool beam_has_valid_params(beam_fire_info* fire_info) { switch (fire_info->fire_method) { case BFM_TURRET_FIRED: if (fire_info->shooter == nullptr || fire_info->turret == nullptr || fire_info->target == nullptr) return false; break; case BFM_TURRET_FORCE_FIRED: if (fire_info->shooter == nullptr || fire_info->turret == nullptr || (fire_info->target == nullptr && !(fire_info->bfi_flags & BFIF_TARGETING_COORDS))) return false; break; case BFM_FIGHTER_FIRED: if (fire_info->shooter == nullptr || fire_info->turret == nullptr) return false; break; case BFM_SPAWNED: case BFM_SEXP_FLOATING_FIRED: if (!(fire_info->bfi_flags & BFIF_FLOATING_BEAM) || (fire_info->target == nullptr && !(fire_info->bfi_flags & BFIF_TARGETING_COORDS))) return false; break; case BFM_SUBSPACE_STRIKE: if (!(fire_info->bfi_flags & BFIF_FLOATING_BEAM) || (fire_info->target == nullptr)) return false; break; default: Assertion(false, "Unrecognized beam fire method in beam_has_valid_params"); return false; } // let's also validate the type of target, if applicable if (fire_info->target != nullptr) { if ((fire_info->target->type != OBJ_SHIP) && (fire_info->target->type != OBJ_ASTEROID) && (fire_info->target->type != OBJ_DEBRIS) && (fire_info->target->type != OBJ_WEAPON)) return false; } return true; } // fire a beam, returns nonzero on success. the innards of the code handle all the rest, foo int beam_fire(beam_fire_info *fire_info) { beam *new_item; weapon_info *wip; ship *firing_ship = NULL; int objnum; // sanity check if(fire_info == NULL){ Int3(); return -1; } // if we're out of beams, bail if(Beam_count >= MAX_BEAMS){ return -1; } // make sure the beam_info_index is valid if ((fire_info->beam_info_index < 0) || (fire_info->beam_info_index >= weapon_info_size()) || !(Weapon_info[fire_info->beam_info_index].wi_flags[Weapon::Info_Flags::Beam])) { UNREACHABLE("beam_info_index (%d) invalid (either <0, >= %d, or not actually a beam)!\n", fire_info->beam_info_index, weapon_info_size()); return -1; } wip = &Weapon_info[fire_info->beam_info_index]; // copied from weapon_create() if ((wip->num_substitution_patterns > 0) && (fire_info->shooter != nullptr)) { // using substitution // get to the instance of the gun Assertion(fire_info->shooter->type == OBJ_SHIP, "Expected type OBJ_SHIP, got %d", fire_info->shooter->type); Assertion((fire_info->shooter->instance < MAX_SHIPS) && (fire_info->shooter->instance >= 0), "Ship index is %d, which is out of range [%d,%d)", fire_info->shooter->instance, 0, MAX_SHIPS); ship* parent_shipp = &(Ships[fire_info->shooter->instance]); Assert(parent_shipp != nullptr); size_t* position = get_pointer_to_weapon_fire_pattern_index(fire_info->beam_info_index, fire_info->shooter->instance, fire_info->turret); Assertion(position != nullptr, "'%s' is trying to fire a weapon that is not selected", Ships[fire_info->shooter->instance].ship_name); size_t curr_pos = *position; if ((parent_shipp->flags[Ship::Ship_Flags::Primary_linked]) && curr_pos > 0) { curr_pos--; } ++(*position); *position = (*position) % wip->num_substitution_patterns; if (wip->weapon_substitution_pattern[curr_pos] == -1) { // weapon doesn't want any sub return -1; } else if (wip->weapon_substitution_pattern[curr_pos] != fire_info->beam_info_index) { fire_info->beam_info_index = wip->weapon_substitution_pattern[curr_pos]; // weapon wants to sub with weapon other than me return beam_fire(fire_info); } } if (!beam_has_valid_params(fire_info)) return -1; if (fire_info->shooter != NULL) { firing_ship = &Ships[fire_info->shooter->instance]; } // get a free beam new_item = GET_FIRST(&Beam_free_list); Assert( new_item != &Beam_free_list ); // shouldn't have the dummy element if(new_item == &Beam_free_list){ return -1; } // make sure that our textures are loaded as well extern bool weapon_is_used(int weapon_index); extern void weapon_load_bitmaps(int weapon_index); if ( !weapon_is_used(fire_info->beam_info_index) ) { weapon_load_bitmaps(fire_info->beam_info_index); } // remove from the free list list_remove( &Beam_free_list, new_item ); // insert onto the end of used list list_append( &Beam_used_list, new_item ); // increment counter Beam_count++; // fill in some values new_item->warmup_stamp = -1; new_item->warmdown_stamp = -1; new_item->weapon_info_index = fire_info->beam_info_index; new_item->objp = fire_info->shooter; new_item->sig = (fire_info->shooter != NULL) ? fire_info->shooter->signature : 0; new_item->subsys = fire_info->turret; new_item->life_left = wip->b_info.beam_life; new_item->life_total = wip->b_info.beam_life; new_item->r_collision_count = 0; new_item->f_collision_count = 0; new_item->target = fire_info->target; new_item->target_subsys = fire_info->target_subsys; new_item->target_sig = (fire_info->target != NULL) ? fire_info->target->signature : 0; new_item->beam_sound_loop = sound_handle::invalid(); new_item->type = wip->b_info.beam_type; new_item->local_fire_postion = fire_info->local_fire_postion; new_item->framecount = 0; new_item->flags = 0; new_item->shot_index = 0; new_item->current_width_factor = wip->b_info.beam_initial_width < 0.1f ? 0.1f : wip->b_info.beam_initial_width; new_item->team = (firing_ship == NULL) ? fire_info->team : static_cast(firing_ship->team); new_item->range = wip->b_info.range; new_item->damage_threshold = wip->b_info.damage_threshold; new_item->bank = fire_info->bank; new_item->Beam_muzzle_stamp = -1; new_item->beam_glow_frame = 0.0f; new_item->firingpoint = (fire_info->bfi_flags & BFIF_FLOATING_BEAM) ? -1 : fire_info->turret->turret_next_fire_pos; new_item->last_start = fire_info->starting_pos; new_item->type5_rot_speed = wip->b_info.t5info.continuous_rot; new_item->rotates = wip->b_info.beam_type == BeamType::OMNI && wip->b_info.t5info.continuous_rot_axis != Type5BeamRotAxis::UNSPECIFIED; if (fire_info->bfi_flags & BFIF_FORCE_FIRING) new_item->flags |= BF_FORCE_FIRING; if (fire_info->bfi_flags & BFIF_IS_FIGHTER_BEAM) new_item->flags |= BF_IS_FIGHTER_BEAM; if (fire_info->bfi_flags & BFIF_FLOATING_BEAM) new_item->flags |= BF_FLOATING_BEAM; if (fire_info->bfi_flags & BFIF_TARGETING_COORDS) { new_item->flags |= BF_TARGETING_COORDS; new_item->target_pos1 = fire_info->target_pos1; new_item->target_pos2 = fire_info->target_pos2; } else { vm_vec_zero(&new_item->target_pos1); vm_vec_zero(&new_item->target_pos2); } for (float &frame : new_item->beam_section_frame) frame = 0.0f; // beam collision and light width if (wip->b_info.beam_width > 0.0f) { new_item->beam_collide_width = wip->b_info.beam_width; new_item->beam_light_width = wip->b_info.beam_width; } else { float widest = beam_get_widest(new_item); new_item->beam_collide_width = wip->collision_radius_override > 0.0f ? wip->collision_radius_override : widest; new_item->beam_light_width = widest; } if (fire_info->bfi_flags & BFIF_IS_FIGHTER_BEAM && new_item->type != BeamType::OMNI) { new_item->type = BeamType::TARGETING; } // if the targeted subsystem is not NULL, force it to be a direct fire beam if(new_item->target_subsys != nullptr && new_item->type != BeamType::TARGETING && new_item->type != BeamType::OMNI){ new_item->type = BeamType::DIRECT_FIRE; } // antifighter beam weapons can only fire at small ships and missiles if(new_item->type == BeamType::ANTIFIGHTER){ // if its a targeted ship, get the target ship if((fire_info->target != NULL) && (fire_info->target->type == OBJ_SHIP) && (fire_info->target->instance >= 0)){ ship *target_ship = &Ships[fire_info->target->instance]; // maybe force to be direct fire if(Ship_info[target_ship->ship_info_index].class_type > -1 && (Ship_types[Ship_info[target_ship->ship_info_index].class_type].flags[Ship::Type_Info_Flags::Beams_easily_hit])){ new_item->type = BeamType::DIRECT_FIRE; } } } // ---------------------------------------------------------------------- // THIS IS THE CRITICAL POINT FOR MULTIPLAYER // beam_get_binfo(...) determines exactly how the beam will behave over the course of its life // it fills in binfo, which we can pass to clients in multiplayer if(fire_info->beam_info_override != NULL){ new_item->binfo = *fire_info->beam_info_override; } else { float burst_rot = 0.0f; if (new_item->type == BeamType::OMNI && !wip->b_info.t5info.burst_rot_pattern.empty()) { burst_rot = wip->b_info.t5info.burst_rot_pattern[fire_info->burst_index]; } beam_get_binfo(new_item, fire_info->accuracy, wip->b_info.beam_shots,fire_info->burst_seed, burst_rot, fire_info->per_burst_rotation); // to fill in b_info - the set of directional aim vectors } flagset default_flags; if (!wip->wi_flags[Weapon::Info_Flags::No_collide]) default_flags.set(Object::Object_Flags::Collides); // create the associated object objnum = obj_create(OBJ_BEAM, ((fire_info->shooter != NULL) ? OBJ_INDEX(fire_info->shooter) : -1), BEAM_INDEX(new_item), &vmd_identity_matrix, &vmd_zero_vector, 1.0f, default_flags); if(objnum < 0){ beam_delete(new_item); mprintf(("obj_create() failed for a beam weapon because you are running out of object slots!\n")); return -1; } new_item->objnum = objnum; if (new_item->objp != nullptr && Weapons_inherit_parent_collision_group) { Objects[objnum].collision_group_id = new_item->objp->collision_group_id; } // this sets up all info for the first frame the beam fires beam_aim(new_item); // to fill in shot_point, etc. // check to see if its legal to fire at this guy if (beam_ok_to_fire(new_item) != 1) { beam_delete(new_item); mprintf(("Killing beam at initial fire because of illegal targeting!!!\n")); return -1; } // if we're a multiplayer master - send a packet if (MULTIPLAYER_MASTER) { send_beam_fired_packet(fire_info, &new_item->binfo); } // start the warmup phase beam_start_warmup(new_item); return objnum; } // fire a targeting beam, returns objnum on success. a much much simplified version of a beam weapon // targeting lasers last _one_ frame. For a continuous stream - they must be created every frame. // this allows it to work smoothly in multiplayer (detect "trigger down". every frame just create a targeting laser firing straight out of the // object. this way you get all the advantages of nice rendering and collisions). // NOTE : only references beam_info_index and shooter int beam_fire_targeting(fighter_beam_fire_info *fire_info) { beam *new_item; weapon_info *wip; int objnum; ship *firing_ship; // sanity check if(fire_info == NULL){ Int3(); return -1; } // if we're out of beams, bail if(Beam_count >= MAX_BEAMS){ return -1; } // make sure the beam_info_index is valid Assert((fire_info->beam_info_index >= 0) && (fire_info->beam_info_index < weapon_info_size()) && (Weapon_info[fire_info->beam_info_index].wi_flags[Weapon::Info_Flags::Beam])); if((fire_info->beam_info_index < 0) || (fire_info->beam_info_index >= weapon_info_size()) || !(Weapon_info[fire_info->beam_info_index].wi_flags[Weapon::Info_Flags::Beam])){ return -1; } wip = &Weapon_info[fire_info->beam_info_index]; // make sure a ship is firing this Assert((fire_info->shooter->type == OBJ_SHIP) && (fire_info->shooter->instance >= 0) && (fire_info->shooter->instance < MAX_SHIPS)); if ( (fire_info->shooter->type != OBJ_SHIP) || (fire_info->shooter->instance < 0) || (fire_info->shooter->instance >= MAX_SHIPS) ) { return -1; } firing_ship = &Ships[fire_info->shooter->instance]; // get a free beam new_item = GET_FIRST(&Beam_free_list); Assert( new_item != &Beam_free_list ); // shouldn't have the dummy element // remove from the free list list_remove( &Beam_free_list, new_item ); // insert onto the end of used list list_append( &Beam_used_list, new_item ); // increment counter Beam_count++; // maybe allocate some extra data based on the beam type Assert(wip->b_info.beam_type == BeamType::TARGETING); if(wip->b_info.beam_type != BeamType::TARGETING){ return -1; } // fill in some values new_item->warmup_stamp = fire_info->warmup_stamp; new_item->warmdown_stamp = fire_info->warmdown_stamp; new_item->weapon_info_index = fire_info->beam_info_index; new_item->objp = fire_info->shooter; new_item->sig = fire_info->shooter->signature; new_item->subsys = NULL; new_item->life_left = fire_info->life_left; new_item->life_total = fire_info->life_total; new_item->r_collision_count = 0; new_item->f_collision_count = 0; new_item->target = NULL; new_item->target_subsys = NULL; new_item->target_sig = 0; new_item->beam_sound_loop = sound_handle::invalid(); new_item->type = BeamType::TARGETING; new_item->local_fire_postion = fire_info->local_fire_postion; new_item->framecount = 0; new_item->flags = 0; new_item->shot_index = 0; new_item->current_width_factor = wip->b_info.beam_initial_width < 0.1f ? 0.1f : wip->b_info.beam_initial_width; new_item->team = (char)firing_ship->team; new_item->range = wip->b_info.range; new_item->damage_threshold = wip->b_info.damage_threshold; // beam collision and light width if (wip->b_info.beam_width > 0.0f) { new_item->beam_collide_width = wip->b_info.beam_width; new_item->beam_light_width = wip->b_info.beam_width; } else { float widest = beam_get_widest(new_item); new_item->beam_collide_width = wip->collision_radius_override > 0.0f ? wip->collision_radius_override : widest; new_item->beam_light_width = widest; } // targeting type beams are a very special weapon type - binfo has no meaning flagset initial_flags; if (!wip->wi_flags[Weapon::Info_Flags::No_collide]) initial_flags.set(Object::Object_Flags::Collides); // create the associated object objnum = obj_create(OBJ_BEAM, OBJ_INDEX(fire_info->shooter), BEAM_INDEX(new_item), &vmd_identity_matrix, &vmd_zero_vector, 1.0f, initial_flags); if(objnum < 0){ beam_delete(new_item); nprintf(("General", "obj_create() failed for beam weapon! bah!\n")); Int3(); return -1; } new_item->objnum = objnum; // this sets up all info for the first frame the beam fires beam_aim(new_item); // to fill in shot_point, etc. if(Beams[Objects[objnum].instance].objnum != objnum){ Int3(); return -1; } return objnum; } // return an object index of the guy who's firing this beam int beam_get_parent(object *bm) { beam *b; // get a handle to the beam Assert(bm->type == OBJ_BEAM); Assert(bm->instance >= 0); if(bm->type != OBJ_BEAM){ return -1; } if(bm->instance < 0){ return -1; } b = &Beams[bm->instance]; if(b->objp == NULL){ return -1; } // if the object handle is invalid if(b->objp->signature != b->sig){ return -1; } // return the handle return OBJ_INDEX(b->objp); } // return weapon_info_index of beam int beam_get_weapon_info_index(object *bm) { Assert(bm->type == OBJ_BEAM); if (bm->type != OBJ_BEAM) { return -1; } Assert(bm->instance >= 0 && bm->instance < MAX_BEAMS); if (bm->instance < 0) { return -1; } //make sure it's returning a valid info index Assert((Beams[bm->instance].weapon_info_index > -1) && (Beams[bm->instance].weapon_info_index < weapon_info_size())); // return weapon_info_index return Beams[bm->instance].weapon_info_index; } // given a beam object, get the # of collisions which happened during the last collision check (typically, last frame) int beam_get_num_collisions(int objnum) { // sanity checks if((objnum < 0) || (objnum >= MAX_OBJECTS)){ Int3(); return -1; } if((Objects[objnum].instance < 0) || (Objects[objnum].instance >= MAX_BEAMS)){ Int3(); return -1; } if(Beams[Objects[objnum].instance].objnum != objnum){ Int3(); return -1; } if(Beams[Objects[objnum].instance].objnum < 0){ Int3(); return -1; } // return the # of recent collisions return Beams[Objects[objnum].instance].r_collision_count; } // stuff collision info, returns 1 on success int beam_get_collision(int objnum, int num, int *collision_objnum, mc_info **cinfo) { // sanity checks if((objnum < 0) || (objnum >= MAX_OBJECTS)){ Int3(); return 0; } if((Objects[objnum].instance < 0) || (Objects[objnum].instance >= MAX_BEAMS)){ Int3(); return 0; } if((Beams[Objects[objnum].instance].objnum != objnum) || (Beams[Objects[objnum].instance].objnum < 0)){ Int3(); return 0; } if(num >= Beams[Objects[objnum].instance].r_collision_count){ Int3(); return 0; } // return - success *cinfo = &Beams[Objects[objnum].instance].r_collisions[num].cinfo; *collision_objnum = Beams[Objects[objnum].instance].r_collisions[num].c_objnum; return 1; } // pause all looping beam sounds void beam_pause_sounds() { beam *moveup = NULL; // set all beam volumes to 0 moveup = GET_FIRST(&Beam_used_list); if(moveup == NULL){ return; } while(moveup != END_OF_LIST(&Beam_used_list)){ // set the volume to 0, if he has a looping beam sound if (moveup->beam_sound_loop.isValid()) { snd_set_volume(moveup->beam_sound_loop, 0.0f); } // next beam moveup = GET_NEXT(moveup); } } // unpause looping beam sounds void beam_unpause_sounds() { beam *moveup = NULL; // recalc all beam sounds moveup = GET_FIRST(&Beam_used_list); if(moveup == NULL){ return; } while(moveup != END_OF_LIST(&Beam_used_list)){ if (Cmdline_no_3d_sound) { beam_recalc_sounds(moveup); } else { if (moveup->beam_sound_loop.isValid()) { snd_set_volume(moveup->beam_sound_loop, 1.0f); } } // next beam moveup = GET_NEXT(moveup); } } void beam_get_global_turret_gun_info(object *objp, ship_subsys *ssp, vec3d *gpos, vec3d *gvec, int use_angles, vec3d *targetp, bool fighter_beam) { ship_get_global_turret_gun_info(objp, ssp, gpos, gvec, use_angles, targetp); if (fighter_beam) *gvec = objp->orient.vec.fvec; } // -----------------------------===========================------------------------------ // BEAM MOVEMENT FUNCTIONS // -----------------------------===========================------------------------------ // move a direct fire type beam weapon void beam_type_direct_fire_move(beam *b) { vec3d dir; vec3d temp, temp2; // LEAVE THIS HERE OTHERWISE MUZZLE GLOWS DRAW INCORRECTLY WHEN WARMING UP OR DOWN // get the "originating point" of the beam for this frame. essentially bashes last_start if (b->subsys != NULL) beam_get_global_turret_gun_info(b->objp, b->subsys, &b->last_start, &temp, 1, &temp2, (b->flags & BF_IS_FIGHTER_BEAM) > 0); // if the "warming up" timestamp has not expired if((b->warmup_stamp != -1) || (b->warmdown_stamp != -1)){ return; } // put the "last_shot" point arbitrarily far away vm_vec_sub(&dir, &b->last_shot, &b->last_start); vm_vec_normalize_quick(&dir); vm_vec_scale_add(&b->last_shot, &b->last_start, &dir, b->range); Assert(is_valid_vec(&b->last_shot)); } // move a slashing type beam weapon #define BEAM_T(b) ((b->life_total - b->life_left) / b->life_total) void beam_type_slashing_move(beam *b) { vec3d actual_dir; vec3d temp, temp2; float dot_save; // LEAVE THIS HERE OTHERWISE MUZZLE GLOWS DRAW INCORRECTLY WHEN WARMING UP OR DOWN // get the "originating point" of the beam for this frame. essentially bashes last_start if (b->subsys != NULL) beam_get_global_turret_gun_info(b->objp, b->subsys, &b->last_start, &temp, 1, &temp2, (b->flags & BF_IS_FIGHTER_BEAM) > 0); // if the "warming up" timestamp has not expired if((b->warmup_stamp != -1) || (b->warmdown_stamp != -1)){ return; } // if the two direction vectors are _really_ close together, just use the original direction dot_save = vm_vec_dot(&b->binfo.dir_a, &b->binfo.dir_b); if((double)dot_save >= 0.999999999){ actual_dir = b->binfo.dir_a; } // otherwise move towards the dir we calculated when firing this beam else { vm_vec_interp_constant(&actual_dir, &b->binfo.dir_a, &b->binfo.dir_b, BEAM_T(b)); } // now recalculate shot_point to be shooting through our new point vm_vec_scale_add(&b->last_shot, &b->last_start, &actual_dir, b->range); bool is_valid = is_valid_vec(&b->last_shot); Assert(is_valid); if(!is_valid){ actual_dir = b->binfo.dir_a; vm_vec_scale_add(&b->last_shot, &b->last_start, &actual_dir, b->range); } } // targeting type beams functions void beam_type_targeting_move(beam *b) { vec3d temp; // ugh if ( (b->objp == NULL) || (b->objp->instance < 0) ) { Int3(); return; } // targeting type beams only last one frame so we never have to "move" them. temp = b->local_fire_postion; vm_vec_unrotate(&b->last_start, &temp, &b->objp->orient); vm_vec_add2(&b->last_start, &b->objp->pos); vm_vec_scale_add(&b->last_shot, &b->last_start, &b->objp->orient.vec.fvec, b->range); } // antifighter type beam functions void beam_type_antifighter_move(beam *b) { int shot_index, fire_wait; vec3d temp, temp2, dir; // LEAVE THIS HERE OTHERWISE MUZZLE GLOWS DRAW INCORRECTLY WHEN WARMING UP OR DOWN // get the "originating point" of the beam for this frame. essentially bashes last_start if (b->subsys != NULL) beam_get_global_turret_gun_info(b->objp, b->subsys, &b->last_start, &temp, 1, &temp2, (b->flags & BF_IS_FIGHTER_BEAM) > 0); // if the "warming up" timestamp has not expired if((b->warmup_stamp != -1) || (b->warmdown_stamp != -1)){ return; } // determine what stage of the beam we're in beam_type_antifighter_get_status(b, &shot_index, &fire_wait); // if we've changed shot index if(shot_index != b->shot_index){ // set the new index b->shot_index = shot_index; // re-aim beam_aim(b); } // if we're in the fire wait stage b->flags &= ~BF_SAFETY; if(fire_wait){ b->flags |= BF_SAFETY; } // put the "last_shot" point arbitrarily far away vm_vec_sub(&dir, &b->last_shot, &b->last_start); vm_vec_normalize_quick(&dir); vm_vec_scale_add(&b->last_shot, &b->last_start, &dir, b->range); Assert(is_valid_vec(&b->last_shot)); } void beam_type_antifighter_get_status(beam *b, int *shot_index, int *fire_wait) { float shot_time = b->life_total / (float)b->binfo.shot_count; float beam_time = b->life_total - b->life_left; // determine what "shot" we're on *shot_index = (int)(beam_time / shot_time); if(*shot_index >= b->binfo.shot_count){ nprintf(("Beam","Shot of antifighter beam had bad shot_index value\n")); *shot_index = b->binfo.shot_count - 1; } // determine if its the firing or waiting section of the shot (fire happens first, THEN wait) *fire_wait = 0; if(beam_time > ((shot_time * (*shot_index)) + (shot_time * 0.5f))){ *fire_wait = 1; } } // down-the-normal type beam functions void beam_type_normal_move(beam *b) { vec3d temp, turret_norm; if (b->subsys == NULL) { // If we're a free-floating beam, there's nothing to calculate here. return; } // LEAVE THIS HERE OTHERWISE MUZZLE GLOWS DRAW INCORRECTLY WHEN WARMING UP OR DOWN // get the "originating point" of the beam for this frame. essentially bashes last_start beam_get_global_turret_gun_info(b->objp, b->subsys, &b->last_start, &turret_norm, 1, &temp, (b->flags & BF_IS_FIGHTER_BEAM) > 0); // if the "warming up" timestamp has not expired if((b->warmup_stamp != -1) || (b->warmdown_stamp != -1)){ return; } // put the "last_shot" point arbitrarily far away vm_vec_scale_add(&b->last_shot, &b->last_start, &turret_norm, b->range); Assert(is_valid_vec(&b->last_shot)); } void beam_type_omni_move(beam* b) { // keep this updated even if still warming up if (b->flags & BF_IS_FIGHTER_BEAM) { vm_vec_unrotate(&b->last_start, &b->local_fire_postion, &b->objp->orient); vm_vec_add2(&b->last_start, &b->objp->pos); // compute the change in orientation the fighter went through matrix inv_new_orient, transform_matrix; vm_copy_transpose(&inv_new_orient, &b->objp->orient); vm_matrix_x_matrix(&transform_matrix, &b->objp->last_orient, &inv_new_orient); // and put the beam vectors through the same change vec3d old_dirA = b->binfo.dir_a; vec3d old_dirB = b->binfo.dir_b; vec3d old_rot_axis = b->binfo.rot_axis; vm_vec_rotate(&b->binfo.dir_a, &old_dirA, &transform_matrix); vm_vec_rotate(&b->binfo.dir_b, &old_dirB, &transform_matrix); vm_vec_rotate(&b->binfo.rot_axis, &old_rot_axis, &transform_matrix); } else if (b->subsys != nullptr) { vec3d temp, temp2; beam_get_global_turret_gun_info(b->objp, b->subsys, &b->last_start, &temp, 1, &temp2, false); } // if the "warming up" timestamp has not expired if ((b->warmup_stamp != -1) || (b->warmdown_stamp != -1)) { return; } vec3d newdir_a = b->binfo.dir_a; vec3d newdir_b = b->binfo.dir_b; vec3d zero_vec = vmd_zero_vector; vec3d actual_dir; bool no_sweep = vm_vec_dot(&b->binfo.dir_a, &b->binfo.dir_b) > 0.9999f; if (b->rotates) { vm_rot_point_around_line(&newdir_a, &b->binfo.dir_a, (b->life_total - b->life_left) * b->type5_rot_speed, &zero_vec, &b->binfo.rot_axis); if (no_sweep) actual_dir = newdir_a; else vm_rot_point_around_line(&newdir_b, &b->binfo.dir_b, (b->life_total - b->life_left) * b->type5_rot_speed, &zero_vec, &b->binfo.rot_axis); } if (no_sweep) actual_dir = newdir_a; else vm_vec_interp_constant(&actual_dir, &newdir_a, &newdir_b, BEAM_T(b)); // now recalculate shot_point to be shooting through our new point vm_vec_scale_add(&b->last_shot, &b->last_start, &actual_dir, b->range); } // pre-move (before collision checking - but AFTER ALL OTHER OBJECTS HAVE BEEN MOVED) void beam_move_all_pre() { beam *b; beam *moveup; // zero lights for this frame yet Beam_light_count = 0; // traverse through all active beams moveup = GET_FIRST(&Beam_used_list); while (moveup != END_OF_LIST(&Beam_used_list)) { // get the beam b = moveup; // check if parent object has died, if so then delete beam if (b->objp != NULL && b->objp->type == OBJ_NONE) { // set next beam moveup = GET_NEXT(moveup); // delete current beam beam_delete(b); continue; } // unset collision info b->f_collision_count = 0; if ( !physics_paused ) { // make sure to check that firingpoint is still properly set int temp = -1; if (b->subsys != NULL) { temp = b->subsys->turret_next_fire_pos; if (!(b->flags & BF_IS_FIGHTER_BEAM)) b->subsys->turret_next_fire_pos = b->firingpoint; } // move the beam switch (b->type) { // direct fire type beam weapons don't move case BeamType::DIRECT_FIRE : beam_type_direct_fire_move(b); break; // slashing type beam weapons move across the target somewhat randomly case BeamType::SLASHING: beam_type_slashing_move(b); break; // targeting type beam weapons are attached to a fighter - pointing forward case BeamType::TARGETING: beam_type_targeting_move(b); break; // antifighter type case BeamType::ANTIFIGHTER: beam_type_antifighter_move(b); break; // down-the-normal type beams case BeamType::NORMAL_FIRE: beam_type_normal_move(b); break; case BeamType::OMNI: beam_type_omni_move(b); break; // illegal beam type default : Int3(); } if (b->subsys != NULL) { b->subsys->turret_next_fire_pos = temp; } } // next moveup = GET_NEXT(moveup); } } // post-collision time processing for beams void beam_move_all_post() { beam *moveup; beam *next_one; int bf_status; beam_weapon_info *bwi; // traverse through all active beams moveup = GET_FIRST(&Beam_used_list); while(moveup != END_OF_LIST(&Beam_used_list)){ bwi = &Weapon_info[moveup->weapon_info_index].b_info; // check the status of the beam bf_status = beam_ok_to_fire(moveup); // if we're warming up if(moveup->warmup_stamp != -1){ next_one = GET_NEXT(moveup); // should we be stopping? if(bf_status < 0){ beam_delete(moveup); } else { if (moveup->objp != NULL) { // add a muzzle light for the shooter beam_add_light(moveup, OBJ_INDEX(moveup->objp), 0, NULL); } // if the warming up timestamp has expired, start firing if(timestamp_elapsed(moveup->warmup_stamp)){ // start firing if(!beam_start_firing(moveup)){ beam_delete(moveup); } } } // next moveup = next_one; continue; } // if we're warming down else if(moveup->warmdown_stamp != -1){ next_one = GET_NEXT(moveup); // should we be stopping? if(bf_status < 0){ beam_delete(moveup); } else { if (moveup->objp != NULL) { // add a muzzle light for the shooter beam_add_light(moveup, OBJ_INDEX(moveup->objp), 0, NULL); } // if we're done warming down, the beam is finished if(timestamp_elapsed(moveup->warmdown_stamp)){ beam_delete(moveup); } } // next moveup = next_one; continue; } // otherwise, we're firing away......... if (moveup->objp != NULL) { // add a muzzle light for the shooter beam_add_light(moveup, OBJ_INDEX(moveup->objp), 0, NULL); } // subtract out the life left for the beam if(!physics_paused){ moveup->life_left -= flFrametime; } // if we're past the shrink point, start shrinking the beam if(moveup->life_left <= (moveup->life_total * bwi->beam_shrink_factor)){ moveup->flags |= BF_SHRINK; } // if we're shrinking the beam if(moveup->flags & BF_SHRINK){ moveup->current_width_factor -= bwi->beam_shrink_pct * flFrametime; if(moveup->current_width_factor < 0.1f){ moveup->current_width_factor = 0.1f; } } // if we're past the grow point and haven't already finished growing, start growing the beam if (moveup->life_left <= (moveup->life_total * bwi->beam_grow_factor) && !(moveup->flags & BF_FINISHED_GROWING)) { moveup->flags |= BF_GROW; } // if we're growing the beam (but not shrinking yet) if ((moveup->flags & BF_GROW) && !(moveup->flags & BF_SHRINK)) { moveup->current_width_factor += bwi->beam_grow_pct * flFrametime; if (moveup->current_width_factor > 1.0f) { // We've finished growing! moveup->current_width_factor = 1.0f; moveup->flags &= ~BF_GROW; moveup->flags |= BF_FINISHED_GROWING; } } // add tube light for the beam if (moveup->objp != nullptr) { if (moveup->type == BeamType::ANTIFIGHTER) { //we only use the second variable but we need two pointers to pass. int beam_index, beam_waiting = 0; beam_type_antifighter_get_status(moveup, &beam_index, &beam_waiting); //create a tube light only if we are not waiting between shots if (beam_waiting == 0) { beam_add_light(moveup, OBJ_INDEX(moveup->objp), 1, nullptr); } } else { beam_add_light(moveup, OBJ_INDEX(moveup->objp), 1, nullptr); } } // deal with ammo/energy for fighter beams bool multi_ai = MULTIPLAYER_CLIENT && (moveup->objp != Player_obj); bool cheating_player = Weapon_energy_cheat && (moveup->objp == Player_obj); if (moveup->flags & BF_IS_FIGHTER_BEAM && !multi_ai && !cheating_player) { ship* shipp = &Ships[moveup->objp->instance]; weapon_info* wip = &Weapon_info[moveup->weapon_info_index]; shipp->weapon_energy -= wip->energy_consumed * flFrametime; if (shipp->weapon_energy < 0.0f) shipp->weapon_energy = 0.0f; } // stop shooting? if(bf_status <= 0){ next_one = GET_NEXT(moveup); // if beam should abruptly stop if(bf_status == -1){ beam_delete(moveup); } // if the beam should just power down else { beam_start_warmdown(moveup); } // next beam moveup = next_one; continue; } // increment framecount moveup->framecount++; // targetin type weapons live for one frame only // done firing, so go into the warmdown phase { if((moveup->life_left <= 0.0f) && (moveup->warmdown_stamp == -1) && (moveup->framecount > 1)) { beam_start_warmdown(moveup); moveup = GET_NEXT(moveup); continue; } } // handle any collisions which occured collision (will take care of applying damage to all objects which got hit) beam_handle_collisions(moveup); // recalculate beam sounds beam_recalc_sounds(moveup); // next item moveup = GET_NEXT(moveup); } // apply all beam lighting beam_apply_lighting(); } // -----------------------------===========================------------------------------ // BEAM RENDERING FUNCTIONS // -----------------------------===========================------------------------------ // render a beam weapon #define STUFF_VERTICES() do {\ verts[0]->texture_position.u = 0.0f;\ verts[0]->texture_position.v = 0.0f;\ verts[1]->texture_position.u = 1.0f;\ verts[1]->texture_position.v = 0.0f;\ verts[2]->texture_position.u = 1.0f;\ verts[2]->texture_position.v = 1.0f;\ verts[3]->texture_position.u = 0.0f;\ verts[3]->texture_position.v = 1.0f;\ } while(false); #define P_VERTICES() do {\ for(idx=0; idx<4; idx++){\ g3_project_vertex(verts[idx]);\ }\ } while(false); void beam_render(beam *b, float u_offset) { int idx, s_idx; vertex h1[4]; // halves of a beam section vertex *verts[4] = { &h1[0], &h1[1], &h1[2], &h1[3] }; vec3d fvec, top1, bottom1, top2, bottom2; float scale; float u_scale; // beam tileing -Bobboau float length; // beam tileing -Bobboau beam_weapon_section_info *bwsi; beam_weapon_info *bwi; memset( h1, 0, sizeof(vertex) * 4 ); // bogus weapon info index if ( (b == NULL) || (b->weapon_info_index < 0) ) return; // if the beam start and endpoints are the same if ( vm_vec_same(&b->last_start, &b->last_shot) ) return; // get beam direction vm_vec_sub(&fvec, &b->last_shot, &b->last_start); vm_vec_normalize_quick(&fvec); // turn off backface culling //int cull = gr_set_cull(0); length = vm_vec_dist(&b->last_start, &b->last_shot); // beam tileing -Bobboau bwi = &Weapon_info[b->weapon_info_index].b_info; // if this beam tracks its own u_offset, use that instead if (bwi->flags[Weapon::Beam_Info_Flags::Track_own_texture_tiling]) { u_offset = b->u_offset_local; // the parameter is passed by value so this won't interfere with the u_offset in the calling function b->u_offset_local += flFrametime; // increment *after* we grab the offset so that the first frame will always be at offset=0 } // draw all sections for (s_idx = 0; s_idx < bwi->beam_num_sections; s_idx++) { bwsi = &bwi->sections[s_idx]; if ( (bwsi->texture.first_frame < 0) || (bwsi->width <= 0.0f) ) continue; // calculate the beam points scale = frand_range(1.0f - bwsi->flicker, 1.0f + bwsi->flicker); beam_calc_facing_pts(&top1, &bottom1, &fvec, &b->last_start, bwsi->width * scale * b->current_width_factor, bwsi->z_add); beam_calc_facing_pts(&top2, &bottom2, &fvec, &b->last_shot, bwsi->width * scale * scale * b->current_width_factor, bwsi->z_add); g3_transfer_vertex(verts[0], &bottom1); g3_transfer_vertex(verts[1], &bottom2); g3_transfer_vertex(verts[2], &top2); g3_transfer_vertex(verts[3], &top1); P_VERTICES(); STUFF_VERTICES(); // stuff the beam with creamy goodness (texture coords) if (bwsi->tile_type == 1) u_scale = length / (bwsi->width * 0.5f) / bwsi->tile_factor; // beam tileing, might make a tileing factor in beam index later -Bobboau else u_scale = bwsi->tile_factor; verts[1]->texture_position.u = (u_scale + (u_offset * bwsi->translation)); // beam tileing -Bobboau verts[2]->texture_position.u = (u_scale + (u_offset * bwsi->translation)); // beam tileing -Bobboau verts[3]->texture_position.u = (0 + (u_offset * bwsi->translation)); verts[0]->texture_position.u = (0 + (u_offset * bwsi->translation)); float per = 1.0f; if (bwi->range) per -= length / bwi->range; //this should never happen but, just to be safe CLAMP(per, 0.0f, 1.0f); ubyte alpha = (ubyte)(255.0f * per); verts[1]->r = alpha; verts[2]->r = alpha; verts[1]->g = alpha; verts[2]->g = alpha; verts[1]->b = alpha; verts[2]->b = alpha; verts[1]->a = alpha; verts[2]->a = alpha; verts[0]->r = 255; verts[3]->r = 255; verts[0]->g = 255; verts[3]->g = 255; verts[0]->b = 255; verts[3]->b = 255; verts[0]->a = 255; verts[3]->a = 255; // set the right texture with additive alpha, and draw the poly int framenum = 0; if (bwsi->texture.num_frames > 1) { b->beam_section_frame[s_idx] += flFrametime; framenum = bm_get_anim_frame(bwsi->texture.first_frame, b->beam_section_frame[s_idx], bwsi->texture.total_time, true); } float fade = 0.9999f; if (The_mission.flags[Mission::Mission_Flags::Fullneb] && Neb_affects_beams) { vec3d nearest; int result = vm_vec_dist_to_line(&Eye_position, &b->last_start, &b->last_shot, &nearest, nullptr); if (result == 1) nearest = b->last_shot; if (result == -1) nearest = b->last_start; fade *= neb2_get_fog_visibility(&nearest, Neb2_fog_visibility_beam_const + (b->beam_light_width * Neb2_fog_visibility_beam_scaled_factor)); } material material_params; material_set_unlit_emissive(&material_params, bwsi->texture.first_frame + framenum, fade, 2.0f); g3_render_primitives_colored_textured(&material_params, h1, 4, PRIM_TYPE_TRIFAN, false); } // turn backface culling back on //gr_set_cull(cull); } // generate particles for the muzzle glow int hack_time = 100; DCF(h_time, "Sets the hack time for beam muzzle glow (Default is 100)") { dc_stuff_int(&hack_time); } void beam_generate_muzzle_particles(beam *b) { int particle_count; int idx; weapon_info *wip; vec3d turret_norm, turret_pos, particle_pos, particle_dir; matrix m; // if our hack stamp has expired if(!((b->Beam_muzzle_stamp == -1) || timestamp_elapsed(b->Beam_muzzle_stamp))){ return; } // never generate anything past about 1/5 of the beam fire time if(b->warmup_stamp == -1){ return; } // get weapon info wip = &Weapon_info[b->weapon_info_index]; // no specified particle for this beam weapon if (wip->b_info.beam_particle_ani.first_frame < 0) return; // reset the hack stamp b->Beam_muzzle_stamp = timestamp(hack_time); // randomly generate 10 to 20 particles particle_count = (int)frand_range(0.0f, (float)wip->b_info.beam_particle_count); // get turret info - position and normal turret_pos = b->last_start; if (b->subsys != NULL) { turret_norm = b->subsys->system_info->turret_norm; } else { vm_vec_normalized_dir(&turret_norm, &b->last_shot, &b->last_start); } // randomly perturb a vector within a cone around the normal vm_vector_2_matrix(&m, &turret_norm, NULL, NULL); for(idx=0; idxb_info.beam_particle_angle, &m); vm_vec_scale_add(&particle_pos, &turret_pos, &particle_dir, wip->b_info.beam_muzzle_radius * frand_range(0.75f, 0.9f)); // now generate some interesting values for the particle float p_time_ref = wip->b_info.beam_life + ((float)wip->b_info.beam_warmup / 1000.0f); float p_life = frand_range(p_time_ref * 0.5f, p_time_ref * 0.7f); float p_vel = (wip->b_info.beam_muzzle_radius / p_life) * frand_range(0.85f, 1.2f); vm_vec_scale(&particle_dir, -p_vel); if (b->objp != NULL) { vm_vec_add2(&particle_dir, &b->objp->phys_info.vel); //move along with our parent } particle::particle_info pinfo; pinfo.pos = particle_pos; pinfo.vel = particle_dir; pinfo.lifetime = p_life; pinfo.attached_objnum = -1; pinfo.attached_sig = 0; pinfo.rad = wip->b_info.beam_particle_radius; pinfo.reverse = 1; pinfo.type = particle::PARTICLE_BITMAP; pinfo.optional_data = wip->b_info.beam_particle_ani.first_frame; particle::create(&pinfo); } } static float get_muzzle_glow_alpha(beam* b) { float dist; float alpha = 0.8f; const float inner_radius = 15.0f; const float magic_num = 2.75f; // determine what alpha to draw this bitmap with // higher alpha the closer the bitmap gets to the eye dist = vm_vec_dist_quick(&Eye_position, &b->last_start); // if the point is inside the inner radius, alpha is based on distance to the player's eye, // becoming more transparent as it gets close if (dist <= inner_radius) { // alpha per meter between the magic # and the inner radius alpha /= (inner_radius - magic_num); // above value times the # of meters away we are alpha *= (dist - magic_num); if (alpha < 0.005f) return 0.0f; } if (The_mission.flags[Mission::Mission_Flags::Fullneb] && Neb_affects_beams) { alpha *= neb2_get_fog_visibility(&b->last_start, Neb2_fog_visibility_beam_const + (b->beam_light_width * Neb2_fog_visibility_beam_scaled_factor)); } return alpha; } // render the muzzle glow for a beam weapon void beam_render_muzzle_glow(beam *b) { vertex pt; weapon_info *wip = &Weapon_info[b->weapon_info_index]; beam_weapon_info *bwi = &wip->b_info; float rad, pct, rand_val; pt.flags = 0; // avoid potential read of uninit var // if we don't have a glow bitmap if (bwi->beam_glow.first_frame < 0) return; // don't show the muzzle glow for players in the cockpit unless show_ship_model is on, provided Render_player_mflash isn't on bool in_cockpit_view = (Viewer_mode & (VM_EXTERNAL | VM_CHASE | VM_OTHER_SHIP | VM_WARP_CHASE)) == 0; bool player_show_ship_model = b->objp == Player_obj && Ship_info[Ships[b->objp->instance].ship_info_index].flags[Ship::Info_Flags::Show_ship_model]; if ((b->flags & BF_IS_FIGHTER_BEAM) && (b->objp == Player_obj && !Render_player_mflash && in_cockpit_view && !player_show_ship_model)) { return; } // if the beam is warming up, scale the glow if (b->warmup_stamp != -1) { // get warmup pct pct = BEAM_WARMUP_PCT(b); rand_val = 1.0f; } else // if the beam is warming down if (b->warmdown_stamp != -1) { // get warmup pct pct = 1.0f - BEAM_WARMDOWN_PCT(b); rand_val = 1.0f; } // otherwise the beam is really firing else { pct = 1.0f; rand_val = frand_range(0.90f, 1.0f); } rad = wip->b_info.beam_muzzle_radius * pct * rand_val; // don't bother trying to draw if there is no radius if (rad <= 0.0f) return; float alpha = get_muzzle_glow_alpha(b); if (alpha <= 0.0f) return; if (bwi->directional_glow == true){ vertex h1[4]; vertex *verts[4] = { &h1[0], &h1[1], &h1[2], &h1[3] }; vec3d fvec, top1, top2, bottom1, bottom2, sub1, sub2, start, end; int idx; float g_length = bwi->glow_length * pct * rand_val; vm_vec_sub(&fvec, &b->last_shot, &b->last_start); vm_vec_normalize_quick(&fvec); /* (DahBlount) If the glow_length is less than the diameter of the muzzle glow we need to account for that by placing the start and end distances such that the glow is centered on the firing point of the turret. There was actually some oversight here when developing the directional glow feature and any refactoring of it will require some more complex parameters for glow placement. */ if (bwi->glow_length >= 2.0f*rad) { vm_vec_copy_scale(&sub1, &fvec, rad); vm_vec_sub(&start, &b->last_start, &sub1); vm_vec_copy_scale(&sub2, &fvec, g_length); vm_vec_add(&end, &start, &sub2); } else { vm_vec_copy_scale(&sub1, &fvec, 0.5f*g_length); vm_vec_sub(&start, &b->last_start, &sub1); vm_vec_add(&end, &b->last_start, &sub1); } beam_calc_facing_pts(&top1, &bottom1, &fvec, &start, rad, 1.0f); beam_calc_facing_pts(&top2, &bottom2, &fvec, &end, rad, 1.0f); g3_transfer_vertex(verts[0], &bottom1); g3_transfer_vertex(verts[1], &bottom2); g3_transfer_vertex(verts[2], &top2); g3_transfer_vertex(verts[3], &top1); P_VERTICES(); STUFF_VERTICES(); verts[0]->r = 255; verts[1]->r = 255; verts[2]->r = 255; verts[3]->r = 255; verts[0]->g = 255; verts[1]->g = 255; verts[2]->g = 255; verts[3]->g = 255; verts[0]->b = 255; verts[1]->b = 255; verts[2]->b = 255; verts[3]->b = 255; verts[0]->a = 255; verts[1]->a = 255; verts[2]->a = 255; verts[3]->a = 255; int framenum = 0; if ( bwi->beam_glow.num_frames > 1 ) { b->beam_glow_frame += flFrametime; framenum = bm_get_anim_frame(bwi->beam_glow.first_frame, b->beam_glow_frame, bwi->beam_glow.total_time, true); } //gr_set_bitmap(bwi->beam_glow.first_frame + framenum, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, alpha * pct); // draw a poly //g3_draw_poly(4, verts, TMAP_FLAG_TEXTURED | TMAP_FLAG_CORRECT | TMAP_HTL_3D_UNLIT); material material_info; material_set_unlit_emissive(&material_info, bwi->beam_glow.first_frame + framenum, alpha * pct, 2.0f); g3_render_primitives_textured(&material_info, h1, 4, PRIM_TYPE_TRIFAN, false); } else { // draw the bitmap g3_transfer_vertex(&pt, &b->last_start); int framenum = 0; if ( bwi->beam_glow.num_frames > 1 ) { b->beam_glow_frame += flFrametime; framenum = bm_get_anim_frame(bwi->beam_glow.first_frame, b->beam_glow_frame, bwi->beam_glow.total_time, true); } //gr_set_bitmap(bwi->beam_glow.first_frame + framenum, GR_ALPHABLEND_FILTER, GR_BITBLT_MODE_NORMAL, alpha * pct); // draw 1 bitmap //g3_draw_bitmap(&pt, 0, rad, tmap_flags); material mat_params; material_set_unlit_emissive(&mat_params, bwi->beam_glow.first_frame + framenum, alpha * pct, 2.0f); g3_render_rect_screen_aligned(&mat_params, &pt, 0, rad, 0.0f); // maybe draw more if ( pct > 0.3f ) { //g3_draw_bitmap(&pt, 0, rad * 0.75f, tmap_flags, rad * 0.25f); g3_render_rect_screen_aligned(&mat_params, &pt, 0, rad * 0.75f, rad * 0.25f); } if ( pct > 0.5f ) { //g3_draw_bitmap(&pt, 0, rad * 0.45f, tmap_flags, rad * 0.55f); g3_render_rect_screen_aligned(&mat_params, &pt, 0, rad * 0.45f, rad * 0.55f); } if ( pct > 0.7f ) { //g3_draw_bitmap(&pt, 0, rad * 0.25f, tmap_flags, rad * 0.75f); g3_render_rect_screen_aligned(&mat_params, &pt, 0, rad * 0.25f, rad * 0.75f); } } } // render all beam weapons void beam_render_all() { GR_DEBUG_SCOPE("Render Beams"); TRACE_SCOPE(tracing::DrawBeams); beam *moveup; // moves the U value of texture coods in beams if desired-Bobboau static float u_offset = 0.0f; u_offset += flFrametime; // traverse through all active beams moveup = GET_FIRST(&Beam_used_list); while ( moveup != END_OF_LIST(&Beam_used_list) ) { // each beam type renders a little bit differently if ( (moveup->warmup_stamp == -1) && (moveup->warmdown_stamp == -1) && !(moveup->flags & BF_SAFETY) ) { // HACK - if this is the first frame the beam is firing, don't render it if (moveup->framecount <= 0) { moveup->u_offset_local = 0; moveup = GET_NEXT(moveup); continue; } // render the beam itself Assert(moveup->weapon_info_index >= 0); if (moveup->weapon_info_index < 0) { moveup = GET_NEXT(moveup); continue; } beam_render(moveup, u_offset); } // render the muzzle glow beam_render_muzzle_glow(moveup); // maybe generate some muzzle particles beam_generate_muzzle_particles(moveup); // next item moveup = GET_NEXT(moveup); } } // output top and bottom vectors // fvec == forward vector (eye viewpoint basically. in world coords) // pos == world coordinate of the point we're calculating "around" // w == width of the diff between top and bottom around pos void beam_calc_facing_pts( vec3d *top, vec3d *bot, vec3d *fvec, vec3d *pos, float w, float /*z_add*/ ) { vec3d uvec, rvec; vec3d temp; temp = *pos; vm_vec_sub( &rvec, &Eye_position, &temp ); vm_vec_normalize( &rvec ); vm_vec_cross(&uvec,fvec,&rvec); // VECMAT-ERROR: NULL VEC3D (value of, fvec == rvec) vm_vec_normalize_safe(&uvec); // Scale the beam width so that they always appear at least some configured amount of pixels wide. float scaled_w = model_render_get_diameter_clamped_to_min_pixel_size(pos, w, Min_pixel_size_beam); vm_vec_scale_add( top, &temp, &uvec, scaled_w * 0.5f ); vm_vec_scale_add( bot, &temp, &uvec, -scaled_w * 0.5f ); } // light scale factor float blight = 25.5f; DCF(blight, "Sets the beam light scale factor (Default is 25.5f)") { dc_stuff_float(&blight); } float beam_current_light_radius(beam *bm, weapon_info *wip, beam_weapon_info *bwi, float noise) { auto lp = lighting_profile::current(); float width = lp->beam_light_radius.handle(wip->light_radius); if(bwi->beam_light_as_multiplier) width *= bm->beam_light_width; if(bwi->beam_light_flicker) width *= noise; return width; } /** * @brief Validates a safe state for beam light creation functions * * @return true if state is safe, false otherwise */ bool beam_light_sanity_and_setup(beam const* bm, object const* objp, weapon_info** wip, beam_weapon_info** bwi) { // no lighting if (Detail.lighting < 2) { return false; } // sanity Assert(bm != nullptr); Assert(objp != nullptr); if (objp == nullptr || bm == nullptr) { return false; } Assert(bm->weapon_info_index >= 0); *wip = &Weapon_info[bm->weapon_info_index]; *bwi = &(*wip)->b_info; return true; } float beam_light_noise(beam const* bm, beam_weapon_info const* bwi) { if ((bm->warmup_stamp < 0) && (bm->warmdown_stamp < 0)) // disable noise when warming up or down return frand_range(1.0f - bwi->sections[0].flicker, 1.0f + bwi->sections[0].flicker); else return 1.0f; } void beam_light_color(weapon_info *wip,hdr_color *to_fill ) { //If a custom light wasn't set we only base off of laser_color_1, // and so we might as well calculate once and store it. if(!wip->light_color_set){ wip->light_color.set_rgb(wip->laser_color_1.red, wip->laser_color_1.green,wip->laser_color_1.blue); wip->light_color_set=true; } SCP_vector colors; wip->light_color.get_v5f(colors); to_fill->set_vecf(colors); } // call to add a light source to a small object void beam_add_light_small(beam *bm, object *objp, vec3d *pt) { weapon_info *wip = nullptr; beam_weapon_info *bwi = nullptr; if (!beam_light_sanity_and_setup(bm, objp, &wip, &bwi)) return; Assert(pt != nullptr); float noise = beam_light_noise(bm, bwi); // get the width of the beam float light_rad = beam_current_light_radius(bm, wip, bwi, noise); float pct = 0.0f; if (bm->warmup_stamp != -1) { // calculate muzzle light intensity // get warmup pct pct = BEAM_WARMUP_PCT(bm)*0.5f; } else if (bm->warmdown_stamp != -1) { // if the beam is warming down // get warmup pct pct = MAX(1.0f - BEAM_WARMDOWN_PCT(bm)*1.3f,0.0f)*0.5f; } // otherwise the beam is really firing else { pct = 1.0f; } // Color is a copy so that we can modify it the brigthness without side-effect hdr_color light_color; beam_light_color(wip, &light_color); light_color.i(light_color.i() * pct); auto lp = lighting_profile::current(); light_color.i(lp->beam_light_brightness.handle(light_color.i())); if (light_color.i() <= 0.0f || light_rad <= 0.0f) return; light_add_point(pt, light_rad * 0.0001f, light_rad, &light_color); } // call to add a light source to a large object void beam_add_light_large(beam *bm, object *objp, vec3d *pt0, vec3d *pt1) { weapon_info *wip; beam_weapon_info *bwi; if (!beam_light_sanity_and_setup(bm, objp, &wip, &bwi)) return; float noise = beam_light_noise(bm, bwi); // width of the beam float light_rad = beam_current_light_radius(bm, wip, bwi, noise); // Color is a copy so that we can modify it the brigthness without side-effect hdr_color light_color; beam_light_color(wip, &light_color); if (bwi->beam_light_flicker) light_color.i(light_color.i() * noise); auto lp = lighting_profile::current(); light_color.i(lp->beam_light_brightness.handle(light_color.i())); light_rad = lp->beam_light_radius.handle(light_rad); if (light_color.i() <= 0.0f || light_rad <= 0.0f) return; light_add_tube(pt0, pt1, 1.0f, light_rad, &light_color); } // mark an object as being lit void beam_add_light(beam *b, int objnum, int source, vec3d *c_point) { beam_light_info *l; // if we're out of light slots! if(Beam_light_count >= MAX_BEAM_LIGHT_INFO){ return; } // otherwise add it l = &Beam_lights[Beam_light_count++]; l->bm = b; l->objnum = objnum; l->source = (ubyte)source; // only type 2 lights (from collisions) need a collision point if(c_point != NULL){ l->c_point = *c_point; } else { Assert(source != 2); if(source == 2){ Beam_light_count--; } } } // apply lighting from any beams void beam_apply_lighting() { int idx; beam_light_info *l; vec3d pt, dir; beam_weapon_info *bwi; // convert all beam lights into real lights for(idx=0; idxobjnum < 0) || (l->objnum >= MAX_OBJECTS) || (l->bm == NULL)){ continue; } bwi = &Weapon_info[l->bm->weapon_info_index].b_info; // different light types switch(l->source){ // from the muzzle of the gun case 0: // a few meters in from the of muzzle vm_vec_sub(&dir, &l->bm->last_start, &l->bm->last_shot); vm_vec_normalize_quick(&dir); vm_vec_scale(&dir, -0.8f); // TODO: This probably needs to *not* be stupid. -taylor vm_vec_scale_add(&pt, &l->bm->last_start, &dir, bwi->beam_muzzle_radius * 5.0f); beam_add_light_small(l->bm, &Objects[l->objnum], &pt); break; // from the beam passing by case 1: Assert( Objects[l->objnum].instance >= 0 ); // Valathil: Everyone gets tube lights now beam_add_light_large(l->bm, &Objects[l->objnum], &l->bm->last_start, &l->bm->last_shot); break; // from a collision case 2: // Valathil: Dont render impact lights for shaders, handled by tube lighting break; } } } // -----------------------------===========================------------------------------ // BEAM BOOKKEEPING FUNCTIONS // -----------------------------===========================------------------------------ // delete a beam void beam_delete(beam *b) { // remove from active list and put on free list list_remove(&Beam_used_list, b); list_append(&Beam_free_list, b); // delete our associated object if(b->objnum >= 0){ obj_delete(b->objnum); } b->objnum = -1; // kill the beam looping sound if (b->beam_sound_loop.isValid()) { snd_stop(b->beam_sound_loop); b->beam_sound_loop = sound_handle::invalid(); } // handle model animation reversal (closing) // (beam animations should end pretty much immediately - taylor) if ((b->subsys) && (b->subsys->turret_animation_position == MA_POS_READY)) { b->subsys->turret_animation_done_time = timestamp(50); } // subtract one Beam_count--; Assert(Beam_count >= 0); nprintf(("Beam", "Recycled beam (%d beams remaining)\n", Beam_count)); } // given an object, return its model num int beam_get_model(object *objp) { int pof; if (objp == NULL) { return -1; } Assert(objp->instance >= 0); if(objp->instance < 0){ return -1; } switch(objp->type){ case OBJ_SHIP: return Ship_info[Ships[objp->instance].ship_info_index].model_num; case OBJ_WEAPON: Assert(Weapons[objp->instance].weapon_info_index >= 0); if(Weapons[objp->instance].weapon_info_index < 0){ return -1; } return Weapon_info[Weapons[objp->instance].weapon_info_index].model_num; case OBJ_DEBRIS: Assert(Debris[objp->instance].is_hull); if(!Debris[objp->instance].is_hull){ return -1; } return Debris[objp->instance].model_num; case OBJ_ASTEROID: pof = Asteroids[objp->instance].asteroid_subtype; Assert(Asteroids[objp->instance].asteroid_type >= 0); if(Asteroids[objp->instance].asteroid_type < 0){ return -1; } return Asteroid_info[Asteroids[objp->instance].asteroid_type].model_num[pof]; default: // this shouldn't happen too often mprintf(("Beam couldn't find a good object model/type!! (%d)\n", objp->type)); return -1; } } // start the warmup phase for the beam void beam_start_warmup(beam *b) { // set the warmup stamp b->warmup_stamp = timestamp(Weapon_info[b->weapon_info_index].b_info.beam_warmup); // start playing warmup sound if(!(Game_mode & GM_STANDALONE_SERVER) && (Weapon_info[b->weapon_info_index].b_info.beam_warmup_sound.isValid())){ snd_play_3d(gamesnd_get_game_sound(Weapon_info[b->weapon_info_index].b_info.beam_warmup_sound), &b->last_start, &View_position); } } // start the firing phase for the beam, return 0 if the beam failed to start, and should be deleted altogether int beam_start_firing(beam *b) { // kill the warmup stamp so the rest of the code knows its firing b->warmup_stamp = -1; // any special stuff for each weapon type switch(b->type){ // re-aim direct fire and antifighter beam weapons here, otherwise they tend to miss case BeamType::DIRECT_FIRE: case BeamType::ANTIFIGHTER: beam_aim(b); break; case BeamType::SLASHING: break; case BeamType::TARGETING: break; case BeamType::NORMAL_FIRE: break; case BeamType::OMNI: break; default: Int3(); } // determine if we can legitimately start firing, or if we need to take other action switch(beam_ok_to_fire(b)){ case -1 : return 0; case 0 : beam_start_warmdown(b); return 1; } weapon_info* wip = &Weapon_info[b->weapon_info_index]; // start the beam firing sound now, if we haven't already if ((!b->beam_sound_loop.isValid()) && (Weapon_info[b->weapon_info_index].b_info.beam_loop_sound.isValid())) { b->beam_sound_loop = snd_play_3d(gamesnd_get_game_sound(Weapon_info[b->weapon_info_index].b_info.beam_loop_sound), &b->last_start, &View_position, 0.0f, NULL, 1, 1.0, SND_PRIORITY_SINGLE_INSTANCE, NULL, 1.0f, 1); } // "shot" sound if (Weapon_info[b->weapon_info_index].launch_snd.isValid()) snd_play_3d(gamesnd_get_game_sound(Weapon_info[b->weapon_info_index].launch_snd), &b->last_start, &View_position); // if this is a fighter ballistic beam, always take at least one ammo to start with if (b->flags & BF_IS_FIGHTER_BEAM && wip->wi_flags[Weapon::Info_Flags::Ballistic]) Ships[b->objp->instance].weapons.primary_bank_ammo[b->bank]--; if (Script_system.IsActiveAction(CHA_BEAMFIRE)) { Script_system.SetHookObjects(3, "Beam", &Objects[b->objnum], "User", b->objp, "Target", b->target); Script_system.RunCondition(CHA_BEAMFIRE, b->objp, &Objects[b->objnum]); Script_system.RemHookVars({"Beam", "User", "Target"}); } // success return 1; } // start the warmdown phase for the beam void beam_start_warmdown(beam *b) { // timestamp b->warmdown_stamp = timestamp(Weapon_info[b->weapon_info_index].b_info.beam_warmdown); // start the warmdown sound if(Weapon_info[b->weapon_info_index].b_info.beam_warmdown_sound.isValid()){ snd_play_3d(gamesnd_get_game_sound(Weapon_info[b->weapon_info_index].b_info.beam_warmdown_sound), &b->last_start, &View_position); } // kill the beam looping sound if (b->beam_sound_loop.isValid()) { snd_stop(b->beam_sound_loop); b->beam_sound_loop = sound_handle::invalid(); } if (b->subsys != nullptr) { // Starts the warmdown program if it exists b->subsys->system_info->beam_warmdown_program.start(b->objp, &vmd_zero_vector, &vmd_identity_matrix, b->subsys->system_info->subobj_num); } } // recalculate beam sounds (looping sounds relative to the player) void beam_recalc_sounds(beam *b) { beam_weapon_info *bwi; vec3d pos; Assert(b->weapon_info_index >= 0); if(b->weapon_info_index < 0){ return; } bwi = &Weapon_info[b->weapon_info_index].b_info; // update the sound position relative to the player if (b->beam_sound_loop.isValid()) { // get the point closest to the player's viewing position switch(vm_vec_dist_to_line(&View_position, &b->last_start, &b->last_shot, &pos, NULL)){ // behind the beam, so use the start pos case -1: pos = b->last_start; break; // use the closest point case 0: // already calculated in vm_vec_dist_to_line(...) break; // past the beam, so use the shot pos case 1: pos = b->last_shot; break; } snd_update_3d_pos(b->beam_sound_loop, gamesnd_get_game_sound(bwi->beam_loop_sound), &pos); } } // -----------------------------===========================------------------------------ // BEAM AIMING FUNCTIONS // -----------------------------===========================------------------------------ // fills in binfo void beam_get_binfo(beam *b, float accuracy, int num_shots, int burst_seed, float burst_shot_rotation, float per_burst_shot_rotation) { vec3d p2; int model_num, idx; vec3d pos1, pos2; vec3d turret_point, turret_norm; beam_weapon_info *bwi; float miss_factor; if (b->flags & BF_IS_FIGHTER_BEAM) { vm_vec_unrotate(&turret_point, &b->local_fire_postion, &b->objp->orient); turret_point += b->objp->pos; turret_norm = b->objp->orient.vec.fvec; } else if (b->subsys != nullptr) { int temp = b->subsys->turret_next_fire_pos; b->subsys->turret_next_fire_pos = b->firingpoint; // where the shot is originating from (b->last_start gets filled in) beam_get_global_turret_gun_info(b->objp, b->subsys, &turret_point, &turret_norm, 1, &p2, (b->flags & BF_IS_FIGHTER_BEAM) > 0); b->subsys->turret_next_fire_pos = temp; } else { turret_point = b->last_start; if (b->flags & BF_TARGETING_COORDS) { p2 = b->target_pos1; } else { p2 = b->target->pos; } vm_vec_normalized_dir(&turret_norm, &p2, &turret_point); } // get a model # to work with model_num = beam_get_model(b->target); if ((model_num < 0) && !(b->flags & BF_TARGETING_COORDS)) { return; } // get beam weapon info Assert(b->weapon_info_index >= 0); if(b->weapon_info_index < 0){ return; } bwi = &Weapon_info[b->weapon_info_index].b_info; // stuff num shots even though its only used for antifighter beam weapons b->binfo.shot_count = (ubyte)num_shots; if(b->binfo.shot_count > MAX_BEAM_SHOTS){ b->binfo.shot_count = MAX_BEAM_SHOTS; } int seed = bwi->flags[Weapon::Beam_Info_Flags::Burst_share_random] ? burst_seed : Random::next(); // generate the proper amount of directional vectors switch(b->type){ // pick an accuracy. beam will be properly aimed at actual fire time case BeamType::DIRECT_FIRE: // determine the miss factor Assert(Game_skill_level >= 0 && Game_skill_level < NUM_SKILL_LEVELS); Assert(b->team >= 0 && b->team < (int)Iff_info.size()); miss_factor = bwi->beam_iff_miss_factor[b->team][Game_skill_level]; // all we will do is decide whether or not we will hit - direct fire beam weapons are re-aimed immediately before firing b->binfo.shot_aim[0] = frand_range(0.0f, 1.0f + miss_factor * accuracy); b->binfo.shot_count = 1; if (b->flags & BF_TARGETING_COORDS) { // these aren't used for direct fire beams, so zero them out vm_vec_zero(&b->binfo.dir_a); vm_vec_zero(&b->binfo.dir_b); } else { // get random model points, this is useful for big ships, because we never miss when shooting at them submodel_get_two_random_points_better(model_num, 0, &b->binfo.dir_a, &b->binfo.dir_b, seed); } break; // just 2 points in the "slash" case BeamType::SLASHING: if (b->flags & BF_TARGETING_COORDS) { // slash between the two pos1 = b->target_pos1; pos2 = b->target_pos2; } else { beam_get_octant_points(model_num, b->target, seed % BEAM_NUM_GOOD_OCTANTS, Beam_good_slash_octants, &pos1, &pos2); } // point 1 vm_vec_sub(&b->binfo.dir_a, &pos1, &turret_point); vm_vec_normalize(&b->binfo.dir_a); // point 2 vm_vec_sub(&b->binfo.dir_b, &pos2, &turret_point); vm_vec_normalize(&b->binfo.dir_b); break; // nothing for this beam - its very special case case BeamType::TARGETING: break; // antifighter beams fire at small ship multiple times case BeamType::ANTIFIGHTER: // determine the miss factor Assert(Game_skill_level >= 0 && Game_skill_level < NUM_SKILL_LEVELS); Assert(b->team >= 0 && b->team < (int)Iff_info.size()); miss_factor = bwi->beam_iff_miss_factor[b->team][Game_skill_level]; // get a bunch of shot aims for(idx=0; idxbinfo.shot_count; idx++){ // MK, 9/3/99: Added pow() function to make increasingly likely to miss with subsequent shots. 30% more likely with each shot. float r = ((float) pow(1.3f, (float) idx)) * miss_factor * accuracy; b->binfo.shot_aim[idx] = frand_range(0.0f, 1.0f + r); } break; // normal-fire beams just fire straight case BeamType::NORMAL_FIRE: b->binfo.shot_aim[0] = 0.0000001f; b->binfo.shot_count = 1; b->binfo.dir_a = turret_norm; b->binfo.dir_b = turret_norm; break; case BeamType::OMNI: { vm_vec_zero(&pos1); vm_vec_zero(&pos2); vec3d rot_axis, burst_rot_axis, per_burst_rot_axis; object* usable_target = nullptr; // don't use the target if this is a fighter beam if (!(b->flags & BF_IS_FIGHTER_BEAM) && b->target) usable_target = b->target; // set up shooter orient now matrix orient = vmd_identity_matrix; if (b->flags & BF_IS_FIGHTER_BEAM) { orient = b->objp->orient; } else if (b->subsys) { vec3d fvec, uvec, target_pos; if (b->target) target_pos = b->target->pos; else if (b->flags & BF_TARGETING_COORDS) target_pos = b->target_pos1; else UNREACHABLE("Turret beam fired without a target or target coordinates?"); vm_vec_sub(&fvec, &target_pos, &turret_point); vm_vec_unrotate(&uvec, &b->subsys->system_info->turret_norm, &b->objp->orient); vm_vector_2_matrix(&orient, &fvec, &uvec); } else if (b->flags & BF_TARGETING_COORDS) { // targeting coords already set up turret_norm with target_pos above vm_vector_2_matrix(&orient, &turret_norm); } vec3d rand1_on = vm_vec_new(0.f, 0.f, 0.f); vec3d rand2_on = vm_vec_new(0.f, 0.f, 0.f); vec3d rand1_off = vm_vec_new(0.f, 0.f, 0.f); vec3d rand2_off = vm_vec_new(0.f, 0.f, 0.f); // Get our two starting points if (usable_target) { // set up our two kinds of random points if needed if (bwi->t5info.start_pos == Type5BeamPos::RANDOM_INSIDE || bwi->t5info.end_pos == Type5BeamPos::RANDOM_INSIDE) { vec3d temp1, temp2; submodel_get_two_random_points_better(model_num, 0, &temp1, &temp2, seed); vm_vec_rotate(&rand1_on, &temp1, &b->target->orient); vm_vec_rotate(&rand2_on, &temp2, &b->target->orient); rand1_on += b->target->pos; rand2_on += b->target->pos; } if (bwi->t5info.start_pos == Type5BeamPos::RANDOM_OUTSIDE || bwi->t5info.end_pos == Type5BeamPos::RANDOM_OUTSIDE) beam_get_octant_points(model_num, usable_target, seed % BEAM_NUM_GOOD_OCTANTS, Beam_good_slash_octants, &rand1_off, &rand2_off); // get start and end points switch (bwi->t5info.start_pos) { case Type5BeamPos::CENTER: pos1 = b->target->pos; break; case Type5BeamPos::RANDOM_INSIDE: pos1 = rand1_on; break; case Type5BeamPos::RANDOM_OUTSIDE: pos1 = rand1_off; break; default:; // the other cases dont matter } if (bwi->t5info.no_translate || bwi->t5info.end_pos == Type5BeamPos::SAME_RANDOM) pos2 = pos1; else { switch (bwi->t5info.end_pos) { case Type5BeamPos::CENTER: pos2 = b->target->pos; break; case Type5BeamPos::RANDOM_INSIDE: pos2 = rand2_on; break; case Type5BeamPos::RANDOM_OUTSIDE: pos2 = rand2_off; break; default:; // the other cases dont matter } } // set rot_axis if its center if (bwi->t5info.continuous_rot_axis == Type5BeamRotAxis::CENTER) rot_axis = b->target->pos; if (bwi->t5info.per_burst_rot_axis == Type5BeamRotAxis::CENTER) per_burst_rot_axis = b->target->pos; if (bwi->t5info.burst_rot_axis == Type5BeamRotAxis::CENTER) burst_rot_axis = b->target->pos; } else { // No usable target vec3d center = vm_vec_new(0.f, 0.f, 0.f); // if we have no target let's act as though we're shooting at something with a 300m radius 300m away // randomize the start and end points if not center aiming // aim on the edge for random outside if (bwi->t5info.start_pos != Type5BeamPos::CENTER) vm_vec_random_in_circle(&pos1, ¢er, &orient, 1.f, bwi->t5info.start_pos == Type5BeamPos::RANDOM_OUTSIDE); if (bwi->t5info.end_pos != Type5BeamPos::CENTER) vm_vec_random_in_circle(&pos2, ¢er, &orient, 1.f, bwi->t5info.start_pos == Type5BeamPos::RANDOM_OUTSIDE); if (bwi->t5info.no_translate || bwi->t5info.end_pos == Type5BeamPos::SAME_RANDOM) pos2 = pos1; pos1 *= 300.f; pos2 *= 300.f; vec3d move_forward = vm_vec_new(0.f, 0.f, 300.f); center += move_forward; pos1 += move_forward; pos2 += move_forward; // unrotate the points to get world positions vec3d temp = pos1; vm_vec_unrotate(&pos1, &temp, &orient); temp = pos2; vm_vec_unrotate(&pos2, &temp, &orient); temp = center; vm_vec_unrotate(¢er, &temp, &orient); pos1 += turret_point; pos2 += turret_point; center += turret_point; // set rot_axis if its center if (bwi->t5info.continuous_rot_axis == Type5BeamRotAxis::CENTER) rot_axis = center; if (bwi->t5info.per_burst_rot_axis == Type5BeamRotAxis::CENTER) per_burst_rot_axis = center; if (bwi->t5info.burst_rot_axis == Type5BeamRotAxis::CENTER) burst_rot_axis = center; } // OKAY DONE WITH THE INITIAL SET UP // set rot_axis if its one of the before offset points if (bwi->t5info.continuous_rot_axis == Type5BeamRotAxis::STARTPOS_NO_OFFSET || bwi->t5info.continuous_rot_axis == Type5BeamRotAxis::ENDPOS_NO_OFFSET) rot_axis = bwi->t5info.continuous_rot_axis == Type5BeamRotAxis::STARTPOS_NO_OFFSET ? pos1 : pos2; if (bwi->t5info.per_burst_rot_axis == Type5BeamRotAxis::STARTPOS_NO_OFFSET || bwi->t5info.per_burst_rot_axis == Type5BeamRotAxis::ENDPOS_NO_OFFSET) per_burst_rot_axis = bwi->t5info.per_burst_rot_axis == Type5BeamRotAxis::STARTPOS_NO_OFFSET ? pos1 : pos2; if (bwi->t5info.burst_rot_axis == Type5BeamRotAxis::STARTPOS_NO_OFFSET || bwi->t5info.burst_rot_axis == Type5BeamRotAxis::ENDPOS_NO_OFFSET) burst_rot_axis = bwi->t5info.burst_rot_axis == Type5BeamRotAxis::STARTPOS_NO_OFFSET ? pos1 : pos2; // now the offsets float scale_factor; if (b->target != nullptr) { if (bwi->t5info.target_scale_positions) scale_factor = b->target->radius; else scale_factor = vm_vec_dist(&b->target->pos, &turret_point); // using dist here means we have a constant angular width } else scale_factor = 300.f; // no target, just use 300m like the notarget scenario above vec3d offset = bwi->t5info.start_pos_offset; offset *= scale_factor; // switch to the target's orient if applicable if (bwi->t5info.target_orient_positions && b->target != nullptr) orient = b->target->orient; // maybe add some random vec3d random_offset; vm_vec_random_in_sphere(&random_offset, &vmd_zero_vector, 1.f, false, true); random_offset *= scale_factor; random_offset.xyz.x *= bwi->t5info.start_pos_rand.xyz.x; random_offset.xyz.y *= bwi->t5info.start_pos_rand.xyz.y; random_offset.xyz.z *= bwi->t5info.start_pos_rand.xyz.z; offset += random_offset; // then unrotate by it to get the world orientation vec3d rotated_offset; vm_vec_unrotate(&rotated_offset, &offset, &orient); pos1 += rotated_offset; // end pos offset if (bwi->t5info.no_translate) pos2 = pos1; else { offset = bwi->t5info.end_pos_offset; offset *= scale_factor; // randomness vm_vec_random_in_sphere(&random_offset, &vmd_zero_vector, 1.f, false, true); random_offset *= scale_factor; random_offset.xyz.x *= bwi->t5info.start_pos_rand.xyz.x; random_offset.xyz.y *= bwi->t5info.start_pos_rand.xyz.y; random_offset.xyz.z *= bwi->t5info.start_pos_rand.xyz.z; offset += random_offset; // rotate vm_vec_unrotate(&rotated_offset, &offset, &orient); pos2 += rotated_offset; } // finally grab the last cases for rot_axis if (bwi->t5info.continuous_rot_axis == Type5BeamRotAxis::STARTPOS_OFFSET || bwi->t5info.continuous_rot_axis == Type5BeamRotAxis::ENDPOS_OFFSET) rot_axis = bwi->t5info.continuous_rot_axis == Type5BeamRotAxis::STARTPOS_OFFSET ? pos1 : pos2; if (bwi->t5info.per_burst_rot_axis == Type5BeamRotAxis::STARTPOS_OFFSET || bwi->t5info.per_burst_rot_axis == Type5BeamRotAxis::ENDPOS_OFFSET) per_burst_rot_axis = bwi->t5info.per_burst_rot_axis == Type5BeamRotAxis::STARTPOS_OFFSET ? pos1 : pos2; if (bwi->t5info.burst_rot_axis == Type5BeamRotAxis::STARTPOS_OFFSET || bwi->t5info.burst_rot_axis == Type5BeamRotAxis::ENDPOS_OFFSET) burst_rot_axis = bwi->t5info.burst_rot_axis == Type5BeamRotAxis::STARTPOS_OFFSET ? pos1 : pos2; // normalize the vectors vec3d per_burst_rot_axis_direction, burst_rot_axis_direction; vm_vec_sub(&per_burst_rot_axis_direction, &per_burst_rot_axis, &turret_point); vm_vec_normalize(&per_burst_rot_axis_direction); vm_vec_sub(&burst_rot_axis_direction, &burst_rot_axis, &turret_point); vm_vec_normalize(&burst_rot_axis_direction); if (bwi->t5info.continuous_rot_axis != Type5BeamRotAxis::UNSPECIFIED) { vm_vec_sub(&b->binfo.rot_axis, &rot_axis, &turret_point); vm_vec_normalize(&b->binfo.rot_axis); } vm_vec_sub(&b->binfo.dir_a, &pos1, &turret_point); vm_vec_normalize(&b->binfo.dir_a); vm_vec_sub(&b->binfo.dir_b, &pos2, &turret_point); vm_vec_normalize(&b->binfo.dir_b); vec3d zero_vec = vmd_zero_vector; // and finally rotate around the per_burst and burst rot_axes if (bwi->t5info.per_burst_rot_axis != Type5BeamRotAxis::UNSPECIFIED) { // negative means random float per_burst_rot = per_burst_shot_rotation; if (per_burst_rot < 0.0f) per_burst_rot = static_randf_range(seed, 0.f, PI2); vm_rot_point_around_line(&b->binfo.dir_a, &b->binfo.dir_a, per_burst_rot, &zero_vec, &per_burst_rot_axis_direction); vm_rot_point_around_line(&b->binfo.dir_b, &b->binfo.dir_b, per_burst_rot, &zero_vec, &per_burst_rot_axis_direction); vm_rot_point_around_line(&b->binfo.rot_axis, &b->binfo.rot_axis, per_burst_rot, &zero_vec, &per_burst_rot_axis_direction); } if (bwi->t5info.burst_rot_axis != Type5BeamRotAxis::UNSPECIFIED) { // negative means random float burst_rot = burst_shot_rotation; if (burst_rot < 0.0f) burst_rot = frand_range(0.f, PI2); vm_rot_point_around_line(&b->binfo.dir_a, &b->binfo.dir_a, burst_rot, &zero_vec, &burst_rot_axis_direction); vm_rot_point_around_line(&b->binfo.dir_b, &b->binfo.dir_b, burst_rot, &zero_vec, &burst_rot_axis_direction); vm_rot_point_around_line(&b->binfo.rot_axis, &b->binfo.rot_axis, burst_rot, &zero_vec, &burst_rot_axis_direction); } break; } default: break; } } // aim the beam (setup last_start and last_shot - the endpoints). also recalculates collision pairs void beam_aim(beam *b) { vec3d temp, p2; if (!(b->flags & BF_TARGETING_COORDS)) { // targeting type beam weapons have no target if (b->target == NULL) { Assert(b->type == BeamType::TARGETING); if(b->type != BeamType::TARGETING){ return; } } // get a model # to work with else { // this can happen if we fire at a target that was just destroyed if (beam_get_model(b->target) < 0) { return; } } } if (b->subsys != nullptr && b->type != BeamType::TARGETING) { // targeting type beams don't use this information. int temp_int = b->subsys->turret_next_fire_pos; if (!(b->flags & BF_IS_FIGHTER_BEAM)) b->subsys->turret_next_fire_pos = b->firingpoint; if (b->subsys->system_info->flags[Model::Subsystem_Flags::Share_fire_direction]) { beam_get_global_turret_gun_info(b->objp, b->subsys, &b->last_start, &temp, 0, nullptr, (b->flags & BF_IS_FIGHTER_BEAM) != 0); } else { // where the shot is originating from (b->last_start gets filled in) beam_get_global_turret_gun_info(b->objp, b->subsys, &b->last_start, &temp, 1, &p2, (b->flags & BF_IS_FIGHTER_BEAM) != 0); } b->subsys->turret_next_fire_pos = temp_int; } // setup our initial shot point and aim direction switch(b->type){ case BeamType::DIRECT_FIRE: // if we're targeting a subsystem - shoot directly at it if(b->target_subsys != nullptr){ vm_vec_unrotate(&b->last_shot, &b->target_subsys->system_info->pnt, &b->target->orient); vm_vec_add2(&b->last_shot, &b->target->pos); if ((b->subsys != nullptr) && (b->subsys->system_info->flags[Model::Subsystem_Flags::Share_fire_direction])) { float dist = vm_vec_dist(&b->last_shot,&b->last_start); vm_vec_scale(&temp, dist); } else { vm_vec_sub(&temp, &b->last_shot, &b->last_start); } vm_vec_scale_add(&b->last_shot, &b->last_start, &temp, 2.0f); break; } // if we're shooting at a big ship - shoot directly at the model if((b->target != nullptr) && (b->target->type == OBJ_SHIP) && (Ship_info[Ships[b->target->instance].ship_info_index].is_big_or_huge())){ if ((b->subsys != nullptr) && (b->subsys->system_info->flags[Model::Subsystem_Flags::Share_fire_direction])) { vec3d pnt; vm_vec_unrotate(&pnt, &b->binfo.dir_a, &b->target->orient); vm_vec_add2(&pnt, &b->target->pos); float dist = vm_vec_dist(&pnt, &b->last_start); vm_vec_scale(&temp, dist); p2 = temp; } else { // rotate into world coords vm_vec_unrotate(&temp, &b->binfo.dir_a, &b->target->orient); vm_vec_add2(&temp, &b->target->pos); // get the shot point vm_vec_sub(&p2, &temp, &b->last_start); } vm_vec_scale_add(&b->last_shot, &b->last_start, &p2, 2.0f); break; } // point at the center of the target... if (b->flags & BF_TARGETING_COORDS) { if ((b->subsys != nullptr) && (b->subsys->system_info->flags[Model::Subsystem_Flags::Share_fire_direction])) { beam_get_global_turret_gun_info(b->objp, b->subsys, &b->last_start, &temp, 0, &b->target_pos1, (b->flags & BF_IS_FIGHTER_BEAM) != 0); float dist = vm_vec_dist(&b->target_pos1, &b->last_start); vm_vec_scale_add(&b->last_shot, &b->last_start, &temp, dist); } else { b->last_shot = b->target_pos1; } } else { if ((b->subsys != nullptr) && (b->subsys->system_info->flags[Model::Subsystem_Flags::Share_fire_direction])) { beam_get_global_turret_gun_info(b->objp, b->subsys, &b->last_start, &temp, 0, &b->target->pos, (b->flags & BF_IS_FIGHTER_BEAM) != 0); float dist = vm_vec_dist(&b->target->pos, &b->last_start); vm_vec_scale_add(&b->last_shot, &b->last_start, &temp, dist); } else { b->last_shot = b->target->pos; } // ...then jitter based on shot_aim (requires target) beam_jitter_aim(b, b->binfo.shot_aim[0]); } break; case BeamType::SLASHING: if ((b->subsys != nullptr) && (b->subsys->system_info->flags[Model::Subsystem_Flags::Share_fire_direction])) { vm_vec_scale(&b->binfo.dir_a, b->range); beam_get_global_turret_gun_info(b->objp, b->subsys, &b->last_start, &temp, 0, &b->binfo.dir_a, (b->flags & BF_IS_FIGHTER_BEAM) != 0); vm_vec_add(&b->last_shot, &b->last_start, &temp); } else { // set the shot point vm_vec_scale_add(&b->last_shot, &b->last_start, &b->binfo.dir_a, b->range); } Assert(is_valid_vec(&b->last_shot)); break; case BeamType::TARGETING: // start point temp = b->local_fire_postion; vm_vec_unrotate(&b->last_start, &temp, &b->objp->orient); vm_vec_add2(&b->last_start, &b->objp->pos); vm_vec_scale_add(&b->last_shot, &b->last_start, &b->objp->orient.vec.fvec, b->range); break; case BeamType::ANTIFIGHTER: // point at the center of the target... if (b->flags & BF_TARGETING_COORDS) { if ((b->subsys != nullptr) && (b->subsys->system_info->flags[Model::Subsystem_Flags::Share_fire_direction])) { beam_get_global_turret_gun_info(b->objp, b->subsys, &b->last_start, &temp, 0, &b->target_pos1, (b->flags & BF_IS_FIGHTER_BEAM) != 0); float dist = vm_vec_dist(&b->target_pos1, &b->last_start); vm_vec_scale_add(&b->last_shot, &b->last_start, &temp, dist); } else { b->last_shot = b->target_pos1; } } else { if ((b->subsys != nullptr) && (b->subsys->system_info->flags[Model::Subsystem_Flags::Share_fire_direction])) { beam_get_global_turret_gun_info(b->objp, b->subsys, &b->last_start, &temp, 0, &b->target->pos, (b->flags & BF_IS_FIGHTER_BEAM) != 0); float dist = vm_vec_dist(&b->target->pos, &b->last_start); vm_vec_scale_add(&b->last_shot, &b->last_start, &temp, dist); } else { b->last_shot = b->target->pos; } // ...then jitter based on shot_aim (requires target) beam_jitter_aim(b, b->binfo.shot_aim[b->shot_index]); } nprintf(("AI", "Frame %i: FIRING\n", Framecount)); break; case BeamType::NORMAL_FIRE: // point directly in the direction of the turret vm_vec_scale_add(&b->last_shot, &b->last_start, &temp, b->range); break; case BeamType::OMNI: if ((b->subsys != nullptr) && (b->subsys->system_info->flags[Model::Subsystem_Flags::Share_fire_direction])) { vm_vec_scale(&b->binfo.dir_a, b->range); beam_get_global_turret_gun_info(b->objp, b->subsys, &b->last_start, &temp, 0, &b->binfo.dir_a, (b->flags & BF_IS_FIGHTER_BEAM) != 0); vm_vec_add(&b->last_shot, &b->last_start, &temp); } else { // set the shot point vm_vec_scale_add(&b->last_shot, &b->last_start, &b->binfo.dir_a, b->range); } Assert(is_valid_vec(&b->last_shot)); break; default: UNREACHABLE("Impossible beam type (%d); get a coder!\n", (int)b->type); } if (!Weapon_info[b->weapon_info_index].wi_flags[Weapon::Info_Flags::No_collide]) // recalculate object pairs OBJ_RECALC_PAIRS((&Objects[b->objnum])); } // given a model #, and an object, stuff 2 good world coord points void beam_get_octant_points(int modelnum, object *objp, int oct_index, int oct_array[BEAM_NUM_GOOD_OCTANTS][4], vec3d *v1, vec3d *v2) { vec3d t1, t2, temp; polymodel *m = model_get(modelnum); // bad bad bad bad bad bad if(m == NULL){ Int3(); return; } Assert((oct_index >= 0) && (oct_index < BEAM_NUM_GOOD_OCTANTS)); // randomly pick octants t1 = oct_array[oct_index][2] ? m->octants[oct_array[oct_index][0]].max : m->octants[oct_array[oct_index][0]].min; t2 = oct_array[oct_index][3] ? m->octants[oct_array[oct_index][1]].max : m->octants[oct_array[oct_index][1]].min; Assert(!vm_vec_same(&t1, &t2)); // get them in world coords vm_vec_unrotate(&temp, &t1, &objp->orient); vm_vec_add(v1, &temp, &objp->pos); vm_vec_unrotate(&temp, &t2, &objp->orient); vm_vec_add(v2, &temp, &objp->pos); } // throw some jitter into the aim - based upon shot_aim void beam_jitter_aim(beam *b, float aim) { Assert(b->target != NULL); vec3d forward, circle; matrix m; float subsys_strength; // if the weapons subsystem is damaged or destroyed if((b->objp != NULL) && (b->objp->signature == b->sig) && (b->objp->type == OBJ_SHIP) && (b->objp->instance >= 0) && (b->objp->instance < MAX_SHIPS)){ // get subsytem strength subsys_strength = ship_get_subsystem_strength(&Ships[b->objp->instance], SUBSYSTEM_WEAPONS); // when subsytem strength is 0, double the aim error factor aim += aim * (1.0f - subsys_strength); } // shot aim is a direct linear factor of the target model's radius. // so, pick a random point on the circle vm_vec_sub(&forward, &b->last_shot, &b->last_start); vm_vec_normalize_quick(&forward); // vector vm_vector_2_matrix(&m, &forward, NULL, NULL); // get a random vector on the circle, but somewhat biased towards the center vm_vec_random_in_circle(&circle, &b->last_shot, &m, aim * b->target->radius, false, true); // get the vector pointing to the circle point vm_vec_sub(&forward, &circle, &b->last_start); vm_vec_scale_add(&b->last_shot, &b->last_start, &forward, 2.0f); } // -----------------------------===========================------------------------------ // BEAM COLLISION FUNCTIONS // -----------------------------===========================------------------------------ // collide a beam with a ship, returns 1 if we can ignore all future collisions between the 2 objects int beam_collide_ship(obj_pair *pair) { beam * a_beam; object *weapon_objp; object *ship_objp; ship *shipp; ship_info *sip; weapon_info *bwi; mc_info mc, mc_shield, mc_hull_enter, mc_hull_exit; int model_num; float width; // bogus if (pair == NULL) { return 0; } if (reject_due_collision_groups(pair->a, pair->b)) return 0; // get the beam Assert(pair->a->instance >= 0); Assert(pair->a->type == OBJ_BEAM); Assert(Beams[pair->a->instance].objnum == OBJ_INDEX(pair->a)); weapon_objp = pair->a; a_beam = &Beams[pair->a->instance]; // Don't check collisions for warping out player if past stage 1. if (Player->control_mode >= PCM_WARPOUT_STAGE1) { if ( pair->a == Player_obj ) return 0; if ( pair->b == Player_obj ) return 0; } // if the "warming up" timestamp has not expired if ((a_beam->warmup_stamp != -1) || (a_beam->warmdown_stamp != -1)) { return 0; } // if the beam is on "safety", don't collide with anything if (a_beam->flags & BF_SAFETY) { return 0; } // if the colliding object is the shooting object, return 1 so this is culled if (pair->b == a_beam->objp) { return 1; } // try and get a model model_num = beam_get_model(pair->b); if (model_num < 0) { return 1; } #ifndef NDEBUG Beam_test_ints++; Beam_test_ship++; #endif // get the ship Assert(pair->b->instance >= 0); Assert(pair->b->type == OBJ_SHIP); Assert(Ships[pair->b->instance].objnum == OBJ_INDEX(pair->b)); if ((pair->b->type != OBJ_SHIP) || (pair->b->instance < 0)) return 1; ship_objp = pair->b; shipp = &Ships[ship_objp->instance]; if (shipp->flags[Ship::Ship_Flags::Arriving_stage_1]) return 0; int quadrant_num = -1; bool valid_hit_occurred = false; sip = &Ship_info[shipp->ship_info_index]; bwi = &Weapon_info[a_beam->weapon_info_index]; polymodel *pm = model_get(model_num); // get the width of the beam width = a_beam->beam_collide_width * a_beam->current_width_factor; // Goober5000 - I tried to make collision code much saner... here begin the (major) changes mc_info_init(&mc); // set up collision structs, part 1 mc.model_instance_num = shipp->model_instance_num; mc.model_num = model_num; mc.submodel_num = -1; mc.orient = &ship_objp->orient; mc.pos = &ship_objp->pos; mc.p0 = &a_beam->last_start; mc.p1 = &a_beam->last_shot; // maybe do a sphereline if (width > ship_objp->radius * BEAM_AREA_PERCENT) { mc.radius = width * 0.5f; mc.flags = MC_CHECK_SPHERELINE; } else { mc.flags = MC_CHECK_RAY; } // set up collision structs, part 2 memcpy(&mc_shield, &mc, sizeof(mc_info)); memcpy(&mc_hull_enter, &mc, sizeof(mc_info)); memcpy(&mc_hull_exit, &mc, sizeof(mc_info)); // reverse this vector so that we check for exit holes as opposed to entrance holes mc_hull_exit.p1 = &a_beam->last_start; mc_hull_exit.p0 = &a_beam->last_shot; // set flags mc_shield.flags |= MC_CHECK_SHIELD; mc_hull_enter.flags |= MC_CHECK_MODEL; mc_hull_exit.flags |= MC_CHECK_MODEL; // check all three kinds of collisions int shield_collision = (pm->shield.ntris > 0) ? model_collide(&mc_shield) : 0; int hull_enter_collision = model_collide(&mc_hull_enter); int hull_exit_collision = (beam_will_tool_target(a_beam, ship_objp)) ? model_collide(&mc_hull_exit) : 0; // If we have a range less than the "far" range, check if the ray actually hit within the range if (a_beam->range < BEAM_FAR_LENGTH && (shield_collision || hull_enter_collision || hull_exit_collision)) { // We can't use hit_dist as "1" is the distance between p0 and p1 float rangeSq = a_beam->range * a_beam->range; // actually make sure that the collision points are within range of our beam if (shield_collision && vm_vec_dist_squared(&a_beam->last_start, &mc_shield.hit_point_world) > rangeSq) { shield_collision = 0; } if (hull_enter_collision && vm_vec_dist_squared(&a_beam->last_start, &mc_hull_enter.hit_point_world) > rangeSq) { hull_enter_collision = 0; } if (hull_exit_collision && vm_vec_dist_squared(&mc_hull_exit.hit_point_world, &a_beam->last_start) > rangeSq) { hull_exit_collision = 0; } } if (hull_enter_collision || hull_exit_collision || shield_collision) { WarpEffect* warp_effect = nullptr; if (shipp->flags[Ship::Ship_Flags::Depart_warp] && shipp->warpout_effect != nullptr) warp_effect = shipp->warpout_effect; else if (shipp->flags[Ship::Ship_Flags::Arriving_stage_2] && shipp->warpin_effect != nullptr) warp_effect = shipp->warpin_effect; bool hull_no_collide, shield_no_collide; hull_no_collide = shield_no_collide = false; if (warp_effect != nullptr) { hull_no_collide = point_is_clipped_by_warp(&mc_hull_enter.hit_point_world, warp_effect); shield_no_collide = point_is_clipped_by_warp(&mc_shield.hit_point_world, warp_effect); } if (hull_no_collide) hull_enter_collision = hull_exit_collision = 0; if (shield_no_collide) shield_collision = 0; } // check shields for impact // (tooled ships are probably not going to be maintaining a shield over their exit hole, // therefore we need only check the entrance, just as with conventional weapons) if (!(ship_objp->flags[Object::Object_Flags::No_shields])) { // pick out the shield quadrant if (shield_collision) quadrant_num = get_quadrant(&mc_shield.hit_point, ship_objp); else if (hull_enter_collision && (sip->flags[Ship::Info_Flags::Surface_shields])) quadrant_num = get_quadrant(&mc_hull_enter.hit_point, ship_objp); // make sure that the shield is active in that quadrant if ((quadrant_num >= 0) && ((shipp->flags[Ship::Ship_Flags::Dying]) || !ship_is_shield_up(ship_objp, quadrant_num))) quadrant_num = -1; // see if we hit the shield if (quadrant_num >= 0) { // do the hit effect if (shield_collision) { if (mc_shield.shield_hit_tri != -1) { add_shield_point(OBJ_INDEX(ship_objp), mc_shield.shield_hit_tri, &mc_shield.hit_point); } } else { /* TODO */; } // if this weapon pierces the shield, then do the hit effect, but act like a shield collision never occurred; // otherwise, we have a valid hit on this shield if (bwi->wi_flags[Weapon::Info_Flags::Pierce_shields]) quadrant_num = -1; else valid_hit_occurred = 1; } } // see which impact we use if (shield_collision && valid_hit_occurred) { memcpy(&mc, &mc_shield, sizeof(mc_info)); Assert(quadrant_num >= 0); } else if (hull_enter_collision) { memcpy(&mc, &mc_hull_enter, sizeof(mc_info)); valid_hit_occurred = 1; } // if we got a hit if (valid_hit_occurred) { // since we might have two collisions handled the same way, let's loop over both of them mc_info *mc_array[2]; int mc_size = 1; mc_array[0] = &mc; if (hull_exit_collision) { mc_array[1] = &mc_hull_exit; ++mc_size; } for (int i = 0; i < mc_size; ++i) { bool ship_override = false, weapon_override = false; if (Script_system.IsActiveAction(CHA_COLLIDEBEAM)) { Script_system.SetHookObjects(4, "Self", ship_objp, "Object", weapon_objp, "Ship", ship_objp, "Beam", weapon_objp); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(mc_array[i]->hit_point_world)); ship_override = Script_system.IsConditionOverride(CHA_COLLIDEBEAM, ship_objp, weapon_objp); Script_system.RemHookVars({ "Self", "Object", "Ship", "Beam", "Hitpos" }); } if (scripting::hooks::OnShipCollision->isActive()) { weapon_override = scripting::hooks::OnShipCollision->isOverride( scripting::hook_param_list(scripting::hook_param("Self", 'o', weapon_objp), scripting::hook_param("Object", 'o', ship_objp), scripting::hook_param("Ship", 'o', ship_objp), scripting::hook_param("Beam", 'o', weapon_objp), scripting::hook_param("Hitpos", 'o', mc_array[i]->hit_point_world)), weapon_objp, ship_objp); } if (!ship_override && !weapon_override) { // add to the collision_list // if we got "tooled", add an exit hole too beam_add_collision(a_beam, ship_objp, mc_array[i], quadrant_num, i != 0); } if (Script_system.IsActiveAction(CHA_COLLIDEBEAM) && !(weapon_override && !ship_override)) { Script_system.SetHookObjects(4, "Self", ship_objp, "Object", weapon_objp, "Ship", ship_objp, "Beam", weapon_objp); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(mc_array[i]->hit_point_world)); Script_system.RunCondition(CHA_COLLIDEBEAM, ship_objp, weapon_objp); Script_system.RemHookVars({ "Self", "Object", "Ship", "Beam", "Hitpos" }); } if (scripting::hooks::OnShipCollision->isActive() && ((weapon_override && !ship_override) || (!weapon_override && !ship_override))) { scripting::hooks::OnShipCollision->run( scripting::hook_param_list(scripting::hook_param("Self", 'o', weapon_objp), scripting::hook_param("Object", 'o', ship_objp), scripting::hook_param("Ship", 'o', ship_objp), scripting::hook_param("Beam", 'o', weapon_objp), scripting::hook_param("Hitpos", 'o', mc_array[i]->hit_point_world)), weapon_objp, ship_objp); } } } // reset timestamp to timeout immediately pair->next_check_time = timestamp(0); return 0; } // collide a beam with an asteroid, returns 1 if we can ignore all future collisions between the 2 objects int beam_collide_asteroid(obj_pair *pair) { beam * a_beam; mc_info test_collide; int model_num; // bogus if(pair == NULL){ return 0; } // get the beam Assert(pair->a->instance >= 0); Assert(pair->a->type == OBJ_BEAM); Assert(Beams[pair->a->instance].objnum == OBJ_INDEX(pair->a)); a_beam = &Beams[pair->a->instance]; // if the "warming up" timestamp has not expired if((a_beam->warmup_stamp != -1) || (a_beam->warmdown_stamp != -1)){ return 0; } // if the beam is on "safety", don't collide with anything if(a_beam->flags & BF_SAFETY){ return 0; } // if the colliding object is the shooting object, return 1 so this is culled if(pair->b == a_beam->objp){ return 1; } // try and get a model model_num = beam_get_model(pair->b); if(model_num < 0){ Int3(); return 1; } #ifndef NDEBUG Beam_test_ints++; Beam_test_ast++; #endif // do the collision mc_info_init(&test_collide); test_collide.model_instance_num = -1; test_collide.model_num = model_num; test_collide.submodel_num = -1; test_collide.orient = &pair->b->orient; test_collide.pos = &pair->b->pos; test_collide.p0 = &a_beam->last_start; test_collide.p1 = &a_beam->last_shot; test_collide.flags = MC_CHECK_MODEL | MC_CHECK_RAY; model_collide(&test_collide); // if we got a hit if (test_collide.num_hits) { // add to the collision list bool weapon_override = false, asteroid_override = false; if (Script_system.IsActiveAction(CHA_COLLIDEASTEROID)) { Script_system.SetHookObjects(4, "Self", pair->a, "Object", pair->b, "Beam", pair->a, "Asteroid", pair->b); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(test_collide.hit_point_world)); weapon_override = Script_system.IsConditionOverride(CHA_COLLIDEASTEROID, pair->a, pair->b); Script_system.RemHookVars({ "Self", "Object", "Beam", "Asteroid", "Hitpos" }); } if (Script_system.IsActiveAction(CHA_COLLIDEBEAM)) { Script_system.SetHookObjects(4, "Self", pair->b, "Object", pair->a, "Beam", pair->a, "Asteroid", pair->b); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(test_collide.hit_point_world)); asteroid_override = Script_system.IsConditionOverride(CHA_COLLIDEBEAM, pair->b, pair->a); Script_system.RemHookVars({ "Self", "Object", "Beam", "Asteroid", "Hitpos" }); } if (!weapon_override && !asteroid_override) { beam_add_collision(a_beam, pair->b, &test_collide); } if (Script_system.IsActiveAction(CHA_COLLIDEASTEROID) && !(asteroid_override && !weapon_override)) { Script_system.SetHookObjects(4, "Self", pair->a, "Object", pair->b, "Beam", pair->a, "Asteroid", pair->b); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(test_collide.hit_point_world)); Script_system.RunCondition(CHA_COLLIDEASTEROID, pair->a, pair->b); Script_system.RemHookVars({ "Self", "Object", "Beam", "Asteroid", "Hitpos" }); } if (Script_system.IsActiveAction(CHA_COLLIDEBEAM) && ((asteroid_override && !weapon_override) || (!asteroid_override && !weapon_override))) { Script_system.SetHookObjects(4, "Self", pair->b, "Object", pair->a, "Beam", pair->a, "Asteroid", pair->b); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(test_collide.hit_point_world)); Script_system.RunCondition(CHA_COLLIDEBEAM, pair->b, pair->a); Script_system.RemHookVars({ "Self", "Object", "Beam", "Asteroid", "Hitpos" }); } return 0; } // reset timestamp to timeout immediately pair->next_check_time = timestamp(0); return 0; } // collide a beam with a missile, returns 1 if we can ignore all future collisions between the 2 objects int beam_collide_missile(obj_pair *pair) { beam *a_beam; mc_info test_collide; int model_num; // bogus if(pair == NULL){ return 0; } // get the beam Assert(pair->a->instance >= 0); Assert(pair->a->type == OBJ_BEAM); Assert(Beams[pair->a->instance].objnum == OBJ_INDEX(pair->a)); a_beam = &Beams[pair->a->instance]; // if the "warming up" timestamp has not expired if((a_beam->warmup_stamp != -1) || (a_beam->warmdown_stamp != -1)){ return 0; } // if the beam is on "safety", don't collide with anything if(a_beam->flags & BF_SAFETY){ return 0; } // don't collide if the beam and missile share their parent if (pair->b->parent_sig >= 0 && a_beam->objp && pair->b->parent_sig == a_beam->objp->signature) { return 1; } // try and get a model model_num = beam_get_model(pair->b); if(model_num < 0){ return 1; } #ifndef NDEBUG Beam_test_ints++; #endif // do the collision mc_info_init(&test_collide); test_collide.model_instance_num = -1; test_collide.model_num = model_num; test_collide.submodel_num = -1; test_collide.orient = &pair->b->orient; test_collide.pos = &pair->b->pos; test_collide.p0 = &a_beam->last_start; test_collide.p1 = &a_beam->last_shot; test_collide.flags = MC_CHECK_MODEL | MC_CHECK_RAY; model_collide(&test_collide); // if we got a hit if(test_collide.num_hits) { // add to the collision list bool a_override = false, b_override = false; if (Script_system.IsActiveAction(CHA_COLLIDEWEAPON)) { Script_system.SetHookObjects(4, "Self", pair->a, "Object", pair->b, "Beam", pair->a, "Weapon", pair->b); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(test_collide.hit_point_world)); a_override = Script_system.IsConditionOverride(CHA_COLLIDEWEAPON, pair->a, pair->b); Script_system.RemHookVars({ "Self", "Object", "Beam", "Weapon", "Hitpos" }); } //Should be reversed if (Script_system.IsActiveAction(CHA_COLLIDEBEAM)) { Script_system.SetHookObjects(4, "Self", pair->b, "Object", pair->a, "Beam", pair->a, "Weapon", pair->b); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(test_collide.hit_point_world)); b_override = Script_system.IsConditionOverride(CHA_COLLIDEBEAM, pair->b, pair->a); Script_system.RemHookVars({ "Self", "Object", "Beam", "Weapon", "Hitpos" }); } if(!a_override && !b_override) { beam_add_collision(a_beam, pair->b, &test_collide); } if(Script_system.IsActiveAction(CHA_COLLIDEWEAPON) && !(b_override && !a_override)) { Script_system.SetHookObjects(4, "Self", pair->a, "Object", pair->b, "Beam", pair->a, "Weapon", pair->b); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(test_collide.hit_point_world)); Script_system.RunCondition(CHA_COLLIDEWEAPON, pair->a, pair->b); Script_system.RemHookVars({ "Self", "Object", "Beam", "Weapon", "Hitpos" }); } if(Script_system.IsActiveAction(CHA_COLLIDEBEAM) && ((b_override && !a_override) || (!b_override && !a_override))) { //Should be reversed Script_system.SetHookObjects(4, "Self", pair->b, "Object", pair->a, "Beam", pair->a, "Weapon", pair->b); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(test_collide.hit_point_world)); Script_system.RunCondition(CHA_COLLIDEBEAM, pair->b, pair->a); Script_system.RemHookVars({ "Self", "Object", "Beam", "Weapon", "Hitpos" }); } } // reset timestamp to timeout immediately pair->next_check_time = timestamp(0); return 0; } // collide a beam with debris, returns 1 if we can ignore all future collisions between the 2 objects int beam_collide_debris(obj_pair *pair) { beam * a_beam; mc_info test_collide; int model_num; // bogus if(pair == NULL){ return 0; } if (reject_due_collision_groups(pair->a, pair->b)) return 0; // get the beam Assert(pair->a->instance >= 0); Assert(pair->a->type == OBJ_BEAM); Assert(Beams[pair->a->instance].objnum == OBJ_INDEX(pair->a)); a_beam = &Beams[pair->a->instance]; // if the "warming up" timestamp has not expired if((a_beam->warmup_stamp != -1) || (a_beam->warmdown_stamp != -1)){ return 0; } // if the beam is on "safety", don't collide with anything if(a_beam->flags & BF_SAFETY){ return 0; } // if the colliding object is the shooting object, return 1 so this is culled if(pair->b == a_beam->objp){ return 1; } // try and get a model model_num = beam_get_model(pair->b); if(model_num < 0){ return 1; } #ifndef NDEBUG Beam_test_ints++; #endif // do the collision mc_info_init(&test_collide); test_collide.model_instance_num = -1; test_collide.model_num = model_num; test_collide.submodel_num = -1; test_collide.orient = &pair->b->orient; test_collide.pos = &pair->b->pos; test_collide.p0 = &a_beam->last_start; test_collide.p1 = &a_beam->last_shot; test_collide.flags = MC_CHECK_MODEL | MC_CHECK_RAY; model_collide(&test_collide); // if we got a hit if(test_collide.num_hits) { bool weapon_override = false, debris_override = false; if (Script_system.IsActiveAction(CHA_COLLIDEDEBRIS)) { Script_system.SetHookObjects(4, "Self", pair->a, "Object", pair->b, "Beam", pair->a, "Debris", pair->b); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(test_collide.hit_point_world)); weapon_override = Script_system.IsConditionOverride(CHA_COLLIDEDEBRIS, pair->a, pair->b); Script_system.RemHookVars({ "Self", "Object", "Beam", "Debris", "Hitpos" }); } if (Script_system.IsActiveAction(CHA_COLLIDEBEAM)) { Script_system.SetHookObjects(4, "Self", pair->b, "Object", pair->a, "Beam", pair->a, "Debris", pair->b); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(test_collide.hit_point_world)); debris_override = Script_system.IsConditionOverride(CHA_COLLIDEBEAM, pair->b, pair->a); Script_system.RemHookVars({ "Self", "Object", "Beam", "Debris", "Hitpos" }); } if(!weapon_override && !debris_override) { // add to the collision list beam_add_collision(a_beam, pair->b, &test_collide); } if (Script_system.IsActiveAction(CHA_COLLIDEDEBRIS) && !(debris_override && !weapon_override)) { Script_system.SetHookObjects(4, "Self", pair->a, "Object", pair->b, "Beam", pair->a, "Debris", pair->b); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(test_collide.hit_point_world)); Script_system.RunCondition(CHA_COLLIDEDEBRIS, pair->a, pair->b); Script_system.RemHookVars({ "Self", "Object", "Beam", "Debris", "Hitpos" }); } if (Script_system.IsActiveAction(CHA_COLLIDEBEAM) && ((debris_override && !weapon_override) || (!debris_override && !weapon_override))) { Script_system.SetHookObjects(4, "Self", pair->b, "Object", pair->a, "Beam", pair->a, "Debris", pair->b); Script_system.SetHookVar("Hitpos", 'o', scripting::api::l_Vector.Set(test_collide.hit_point_world)); Script_system.RunCondition(CHA_COLLIDEBEAM, pair->b, pair->a); Script_system.RemHookVars({ "Self", "Object", "Beam", "Debris", "Hitpos" }); } } // reset timestamp to timeout immediately pair->next_check_time = timestamp(0); return 0; } // early-out function for when adding object collision pairs, return 1 if the pair should be ignored int beam_collide_early_out(object *a, object *b) { beam *bm; weapon_info *bwi; // get the beam Assert(a->instance >= 0); if(a->instance < 0){ return 1; } Assert(a->type == OBJ_BEAM); if(a->type != OBJ_BEAM){ return 1; } Assert(Beams[a->instance].objnum == OBJ_INDEX(a)); if(Beams[a->instance].objnum != OBJ_INDEX(a)){ return 1; } bm = &Beams[a->instance]; Assert(bm->weapon_info_index >= 0); if(bm->weapon_info_index < 0){ return 1; } bwi = &Weapon_info[bm->weapon_info_index]; // if the second object has an invalid instance, bail if(b->instance < 0){ return 1; } if((vm_vec_dist(&bm->last_start, &b->pos)-b->radius) > bwi->b_info.range){ return 1; }//if the object is too far away, don't bother trying to colide with it-Bobboau // baseline bails switch(b->type){ case OBJ_SHIP: break; case OBJ_ASTEROID: // targeting lasers only hit ships /* if(bwi->b_info.beam_type == BEAM_TYPE_C){ return 1; }*/ break; case OBJ_DEBRIS: // targeting lasers only hit ships /* if(bwi->b_info.beam_type == BEAM_TYPE_C){ return 1; }*/ // don't ever collide with non hull pieces if(!Debris[b->instance].is_hull){ return 1; } break; case OBJ_WEAPON: // targeting lasers only hit ships /* if(bwi->b_info.beam_type == BEAM_TYPE_C){ return 1; }*/ if(The_mission.ai_profile->flags[AI::Profile_Flags::Beams_damage_weapons]) { if((Weapon_info[Weapons[b->instance].weapon_info_index].weapon_hitpoints <= 0) && (Weapon_info[Weapons[b->instance].weapon_info_index].subtype == WP_LASER)) { return 1; } } else { // don't ever collide against laser weapons - duh if(Weapon_info[Weapons[b->instance].weapon_info_index].subtype == WP_LASER){ return 1; } } break; } float beam_radius = bm->beam_collide_width * bm->current_width_factor * 0.5f; // do a cylinder-sphere collision test if (!fvi_cylinder_sphere_may_collide(&bm->last_start, &bm->last_shot, beam_radius, &b->pos, b->radius * 1.2f)) { return 1; } // don't cull return 0; } // add a collision to the beam for this frame (to be evaluated later) // Goober5000 - erg. Rearranged for clarity, and also to fix a bug that caused is_exit_collision to hardly ever be assigned, // resulting in "tooled" ships taking twice as much damage (in a later function) as they should. void beam_add_collision(beam *b, object *hit_object, mc_info *cinfo, int quadrant_num, bool exit_flag) { beam_collision *bc = nullptr; int idx; // if we haven't reached the limit for beam collisions, just add it if (b->f_collision_count < MAX_FRAME_COLLISIONS) { bc = &b->f_collisions[b->f_collision_count++]; } // otherwise, we've got to do some checking, ick. // I guess we can always just remove the farthest item else { for (idx = 0; idx < MAX_FRAME_COLLISIONS; idx++) { if ((bc == nullptr) || (b->f_collisions[idx].cinfo.hit_dist > bc->cinfo.hit_dist)) bc = &b->f_collisions[idx]; } } if (bc == nullptr) { Int3(); return; } // copy in bc->c_objnum = OBJ_INDEX(hit_object); bc->cinfo = *cinfo; bc->quadrant = quadrant_num; bc->is_exit_collision = exit_flag; // let the hud shield gauge know when Player or Player target is hit if (quadrant_num >= 0) hud_shield_quadrant_hit(hit_object, quadrant_num); } // sort collisions for the frame bool beam_sort_collisions_func(const beam_collision &b1, const beam_collision &b2) { return (b1.cinfo.hit_dist < b2.cinfo.hit_dist); } // handle a hit on a specific object void beam_handle_collisions(beam *b) { int idx, s_idx; beam_collision r_coll[MAX_FRAME_COLLISIONS]; int r_coll_count = 0; weapon_info *wi; float width; // early out if we had no collisions if(b->f_collision_count <= 0){ return; } // get beam weapon info if((b->weapon_info_index < 0) || (b->weapon_info_index >= weapon_info_size())){ Int3(); return; } wi = &Weapon_info[b->weapon_info_index]; // get the width of the beam width = b->beam_collide_width * b->current_width_factor; // the first thing we need to do is sort the collisions, from closest to farthest std::sort(b->f_collisions, b->f_collisions + b->f_collision_count, beam_sort_collisions_func); float damage_time_mod = (flFrametime * 1000.0f) / i2fl(BEAM_DAMAGE_TIME); float real_damage = wi->damage * damage_time_mod; // now apply all collisions until we reach a ship which "stops" the beam or we reach the end of the list for(idx=0; idxf_collision_count; idx++){ int model_num = -1; int apply_beam_physics = 0; int draw_effects = 1; int first_hit = 1; int target = b->f_collisions[idx].c_objnum; // if we have an invalid object if((target < 0) || (target >= MAX_OBJECTS)){ continue; } // try and get a model to deal with model_num = beam_get_model(&Objects[target]); if(model_num < 0){ continue; } if (wi->wi_flags[Weapon::Info_Flags::Huge]) { if (Objects[target].type == OBJ_SHIP) { ship_type_info *sti; sti = ship_get_type_info(&Objects[target]); if (sti->flags[Ship::Type_Info_Flags::No_huge_impact_eff]) draw_effects = 0; } } //Don't draw effects if we're in the cockpit of the hit ship if (Viewer_obj == &Objects[target]) draw_effects = 0; // add to the recent collision list r_coll[r_coll_count].c_objnum = target; r_coll[r_coll_count].c_sig = Objects[target].signature; r_coll[r_coll_count].c_stamp = -1; r_coll[r_coll_count].cinfo = b->f_collisions[idx].cinfo; r_coll[r_coll_count].quadrant = -1; r_coll[r_coll_count].is_exit_collision = false; // if he was already on the recent collision list, copy his timestamp // also, be sure not to play the impact sound again. for(s_idx=0; s_idxr_collision_count; s_idx++){ if((r_coll[r_coll_count].c_objnum == b->r_collisions[s_idx].c_objnum) && (r_coll[r_coll_count].c_sig == b->r_collisions[s_idx].c_sig)){ // timestamp r_coll[r_coll_count].c_stamp = b->r_collisions[s_idx].c_stamp; // don't play the impact sound again first_hit = 0; } } // if the physics timestamp has expired or is not set yet, apply physics if((r_coll[r_coll_count].c_stamp == -1) || timestamp_elapsed(r_coll[r_coll_count].c_stamp)) { float time_compression = f2fl(Game_time_compression); float delay_time = i2fl(BEAM_DAMAGE_TIME) / time_compression; apply_beam_physics = 1; r_coll[r_coll_count].c_stamp = timestamp(fl2i(delay_time)); } // increment collision count r_coll_count++; // play the impact sound if ( first_hit && (wi->impact_snd.isValid()) ) { snd_play_3d( gamesnd_get_game_sound(wi->impact_snd), &b->f_collisions[idx].cinfo.hit_point_world, &Eye_position ); } // KOMET_EXT --> // draw flash, explosion if (draw_effects && ((wi->piercing_impact_effect.isValid()) || (wi->flash_impact_weapon_expl_effect.isValid()))) { float rnd = frand(); int do_expl = 0; if ((rnd < 0.2f || apply_beam_physics) && wi->impact_weapon_expl_effect.isValid()) { do_expl = 1; } vec3d temp_pos, temp_local_pos; vm_vec_sub(&temp_pos, &b->f_collisions[idx].cinfo.hit_point_world, &Objects[target].pos); vm_vec_rotate(&temp_local_pos, &temp_pos, &Objects[target].orient); vec3d worldNormal; if (Objects[target].type == OBJ_SHIP) { auto shipp = &Ships[Objects[target].instance]; model_instance_local_to_global_dir(&worldNormal, &b->f_collisions[idx].cinfo.hit_normal, shipp->model_instance_num, b->f_collisions[idx].cinfo.submodel_num, &Objects[target].orient); } else { // Just assume that we don't need to handle model subobjects here vm_vec_unrotate(&worldNormal, &b->f_collisions[idx].cinfo.hit_normal, &Objects[target].orient); } if (wi->flash_impact_weapon_expl_effect.isValid()) { auto particleSource = particle::ParticleManager::get()->createSource(wi->flash_impact_weapon_expl_effect); particleSource.moveToObject(&Objects[target], &temp_local_pos); particleSource.setOrientationNormal(&worldNormal); vec3d fvec; vm_vec_sub(&fvec, &b->last_shot, &b->last_start); if (!IS_VEC_NULL(&fvec)) { particleSource.setOrientationFromVec(&fvec); } particleSource.finish(); } if(do_expl){ auto particleSource = particle::ParticleManager::get()->createSource(wi->impact_weapon_expl_effect); particleSource.moveToObject(&Objects[target], &temp_local_pos); particleSource.setOrientationNormal(&worldNormal); vec3d fvec; vm_vec_sub(&fvec, &b->last_shot, &b->last_start); if (!IS_VEC_NULL(&fvec)) { particleSource.setOrientationFromVec(&fvec); } particleSource.finish(); } if (wi->piercing_impact_effect.isValid()) { vec3d fvec; vm_vec_sub(&fvec, &b->last_shot, &b->last_start); if(!IS_VEC_NULL(&fvec)){ // get beam direction int ok_to_draw = 0; if (beam_will_tool_target(b, &Objects[target])) { ok_to_draw = 1; if (Objects[target].type == OBJ_SHIP) { ship *shipp = &Ships[Objects[target].instance]; if (shipp->armor_type_idx != -1) { if (Armor_types[shipp->armor_type_idx].GetPiercingType(wi->damage_type_idx) == SADTF_PIERCING_RETAIL) { ok_to_draw = 0; } } } } else { ok_to_draw = 0; if (Objects[target].type == OBJ_SHIP) { float draw_limit, hull_pct; int dmg_type_idx, piercing_type; ship *shipp = &Ships[Objects[target].instance]; hull_pct = Objects[target].hull_strength / shipp->ship_max_hull_strength; dmg_type_idx = wi->damage_type_idx; draw_limit = Ship_info[shipp->ship_info_index].piercing_damage_draw_limit; if (shipp->armor_type_idx != -1) { piercing_type = Armor_types[shipp->armor_type_idx].GetPiercingType(dmg_type_idx); if (piercing_type == SADTF_PIERCING_DEFAULT) { draw_limit = Armor_types[shipp->armor_type_idx].GetPiercingLimit(dmg_type_idx); } else if ((piercing_type == SADTF_PIERCING_NONE) || (piercing_type == SADTF_PIERCING_RETAIL)) { draw_limit = -1.0f; } } if ((draw_limit != -1.0f) && (hull_pct <= draw_limit)) ok_to_draw = 1; } } if (ok_to_draw){ vm_vec_normalize_quick(&fvec); // stream of fire for big ships if (width <= Objects[target].radius * BEAM_AREA_PERCENT) { auto particleSource = particle::ParticleManager::get()->createSource(wi->piercing_impact_effect); particleSource.moveTo(&b->f_collisions[idx].cinfo.hit_point_world); particleSource.setOrientationFromNormalizedVec(&fvec); particleSource.setOrientationNormal(&worldNormal); particleSource.finish(); } } } } // <-- KOMET_EXT } else { if(draw_effects && apply_beam_physics && !physics_paused){ // maybe draw an explosion, if we aren't hitting shields if ((wi->impact_weapon_expl_effect.isValid()) && (b->f_collisions[idx].quadrant < 0)) { vec3d worldNormal; if (Objects[target].type == OBJ_SHIP) { auto shipp = &Ships[Objects[target].instance]; model_instance_local_to_global_dir(&worldNormal, &b->f_collisions[idx].cinfo.hit_normal, shipp->model_instance_num, b->f_collisions[idx].cinfo.submodel_num, &Objects[target].orient); } else { // Just assume that we don't need to handle model subobjects here vm_vec_unrotate(&worldNormal, &b->f_collisions[idx].cinfo.hit_normal, &Objects[target].orient); } auto particleSource = particle::ParticleManager::get()->createSource(wi->impact_weapon_expl_effect); particleSource.moveTo(&b->f_collisions[idx].cinfo.hit_point_world); particleSource.setOrientationNormal(&worldNormal); vec3d fvec; vm_vec_sub(&fvec, &b->last_shot, &b->last_start); if (!IS_VEC_NULL(&fvec)) { particleSource.setOrientationFromVec(&fvec); } particleSource.finish(); } } } if(!physics_paused){ switch(Objects[target].type){ case OBJ_DEBRIS: // hit the debris - the debris hit code takes care of checking for MULTIPLAYER_CLIENT, etc debris_hit(&Objects[target], &Objects[b->objnum], &b->f_collisions[idx].cinfo.hit_point_world, wi->damage); break; case OBJ_WEAPON: if (The_mission.ai_profile->flags[AI::Profile_Flags::Beams_damage_weapons]) { if (!(Game_mode & GM_MULTIPLAYER) || MULTIPLAYER_MASTER) { object *trgt = &Objects[target]; if (trgt->hull_strength > 0) { float attenuation = 1.0f; if ((b->damage_threshold >= 0.0f) && (b->damage_threshold < 1.0f)) { float dist = vm_vec_dist(&b->f_collisions[idx].cinfo.hit_point_world, &b->last_start); float range = b->range; float atten_dist = range * b->damage_threshold; if ((range > dist) && (atten_dist < dist)) { attenuation = 1 - ((dist - atten_dist) / (range - atten_dist)); } } float damage = real_damage * attenuation; int dmg_type_idx = wi->damage_type_idx; weapon_info* trgt_wip = &Weapon_info[Weapons[trgt->instance].weapon_info_index]; if (trgt_wip->armor_type_idx != -1) damage = Armor_types[trgt_wip->armor_type_idx].GetDamage(damage, dmg_type_idx, 1.0f, true); trgt->hull_strength -= damage; if (trgt->hull_strength < 0) { Weapons[trgt->instance].weapon_flags.set(Weapon::Weapon_Flags::Destroyed_by_weapon); weapon_hit(trgt, NULL, &trgt->pos); } } else { if (!(Game_mode & GM_MULTIPLAYER) || MULTIPLAYER_MASTER) { Weapons[trgt->instance].weapon_flags.set(Weapon::Weapon_Flags::Destroyed_by_weapon); weapon_hit(&Objects[target], NULL, &Objects[target].pos); } } } } else { // detonate the missile Assert(Weapon_info[Weapons[Objects[target].instance].weapon_info_index].subtype == WP_MISSILE); if (!(Game_mode & GM_MULTIPLAYER) || MULTIPLAYER_MASTER) { Weapons[Objects[target].instance].weapon_flags.set(Weapon::Weapon_Flags::Destroyed_by_weapon); weapon_hit(&Objects[target], NULL, &Objects[target].pos); } } break; case OBJ_ASTEROID: // hit the asteroid if (!(Game_mode & GM_MULTIPLAYER) || MULTIPLAYER_MASTER) { asteroid_hit(&Objects[target], &Objects[b->objnum], &b->f_collisions[idx].cinfo.hit_point_world, wi->damage); } break; case OBJ_SHIP: // hit the ship - again, the innards of this code handle multiplayer cases // maybe vaporize ship. //only apply damage if the collision is not an exit collision. this prevents twice the damage from being done, although it probably be more realistic since two holes are being punched in the ship instead of one. if (!b->f_collisions[idx].is_exit_collision) { real_damage = beam_get_ship_damage(b, &Objects[target], &b->f_collisions[idx].cinfo.hit_point_world) * damage_time_mod; ship_apply_local_damage(&Objects[target], &Objects[b->objnum], &b->f_collisions[idx].cinfo.hit_point_world, real_damage, wi->damage_type_idx, b->f_collisions[idx].quadrant); } // if this is the first hit on the player ship. whack him if(apply_beam_physics) { beam_apply_whack(b, &Objects[target], &b->f_collisions[idx].cinfo.hit_point_world); } break; } } // if the radius of the target is somewhat close to the radius of the beam, "stop" the beam here // for now : if its smaller than about 1/3 the radius of the ship if(width <= (Objects[target].radius * BEAM_AREA_PERCENT) && !beam_will_tool_target(b, &Objects[target])){ // set last_shot so we know where to properly draw the beam b->last_shot = b->f_collisions[idx].cinfo.hit_point_world; Assert(is_valid_vec(&b->last_shot)); // done wif the beam break; } } // store the new recent collisions for(idx=0; idxr_collisions[idx] = r_coll[idx]; } b->r_collision_count = r_coll_count; } // if it is legal for the beam to fire, or continue firing int beam_ok_to_fire(beam *b) { if (b->objp == NULL) { // If we don't have a firing object, none of these checks make sense. return 1; } // if my own object is invalid, stop firing if (b->objp->signature != b->sig) { mprintf(("BEAM : killing beam because of invalid parent object SIGNATURE!\n")); return -1; } // if my own object is a ghost if (b->objp->type != OBJ_SHIP) { mprintf(("BEAM : killing beam because of invalid parent object TYPE!\n")); return -1; } // targeting type beams are ok to fire all the time if (b->type == BeamType::TARGETING) { ship *shipp = &Ships[b->objp->instance]; if (shipp->weapon_energy <= 0.0f ) { if ( OBJ_INDEX(Player_obj) == shipp->objnum && !(b->life_left>0.0f)) { extern void ship_maybe_do_primary_fail_sound_hud(bool depleted_energy); ship_maybe_do_primary_fail_sound_hud(true); } return 0; } else { return 1; } } if (b->subsys == NULL) { // IF we don't have a firing turret, none of these checks make sense. return 1; } if (!(b->flags & BF_FORCE_FIRING)) { // if the shooting turret is destroyed if (b->subsys->current_hits <= 0.0f) { mprintf(("BEAM : killing beam because turret has been destroyed!\n")); return -1; } // kill it if its disrupted if (ship_subsys_disrupted(b->subsys)) { return -1; } // if the beam will be firing out of its FOV, power it down vec3d aim_dir; vm_vec_sub(&aim_dir, &b->last_shot, &b->last_start); vm_vec_normalize(&aim_dir); if (The_mission.ai_profile->flags[AI::Profile_Flags::Force_beam_turret_fov]) { vec3d turret_normal; if (b->flags & BF_IS_FIGHTER_BEAM) { turret_normal = b->objp->orient.vec.fvec; b->subsys->system_info->flags.remove(Model::Subsystem_Flags::Turret_restricted_fov); } else { model_instance_local_to_global_dir(&turret_normal, &b->subsys->system_info->turret_norm, Ships[b->objp->instance].model_instance_num, b->subsys->system_info->subobj_num, &b->objp->orient, true); } if (!(turret_fov_test(b->subsys, &turret_normal, &aim_dir))) { nprintf(("BEAM", "BEAM : powering beam down because of FOV condition!\n")); return 0; } } else { vec3d turret_dir, turret_pos, temp; beam_get_global_turret_gun_info(b->objp, b->subsys, &turret_pos, &turret_dir, 1, &temp, (b->flags & BF_IS_FIGHTER_BEAM) > 0); if (vm_vec_dot(&aim_dir, &turret_dir) < b->subsys->system_info->turret_fov) { nprintf(("BEAM", "BEAM : powering beam down because of FOV condition!\n")); return 0; } } } // ok to fire/continue firing return 1; } // apply a whack to a ship void beam_apply_whack(beam *b, object *objp, vec3d *hit_point) { weapon_info *wip; ship *shipp; // sanity Assert((b != NULL) && (objp != NULL) && (hit_point != NULL)); if((b == NULL) || (objp == NULL) || (hit_point == NULL)){ return; } Assert(b->weapon_info_index >= 0); wip = &Weapon_info[b->weapon_info_index]; Assert((objp != NULL) && (objp->type == OBJ_SHIP) && (objp->instance >= 0) && (objp->instance < MAX_SHIPS)); if((objp == NULL) || (objp->type != OBJ_SHIP) || (objp->instance < 0) || (objp->instance >= MAX_SHIPS)){ return; } shipp = &Ships[objp->instance]; if((shipp->ai_index < 0) || (shipp->ai_index >= MAX_AI_INFO)){ return; } // don't whack docked ships // Goober5000 - whacking docked ships should work now, so whack them // Goober5000 - weapons with no mass don't whack (bypass the calculations) if(wip->mass == 0.0f) { return; } // determine how big of a whack to apply float whack; // this if block was added by Bobboau to make beams whack properly while preserving reverse compatibility if(wip->mass == 100.0f){ if(wip->damage < b_whack_damage){ whack = b_whack_small; } else { whack = b_whack_big; } }else{ whack = wip->mass; } // whack direction vec3d whack_dir; vm_vec_sub(&whack_dir, &b->last_shot, &b->last_start); // Valathil - use the beam direction as the force direction (like a high pressure water jet) vm_vec_normalize(&whack_dir); vm_vec_scale(&whack_dir, whack); // apply the whack ship_apply_whack(&whack_dir, hit_point, objp); } // return the amount of damage which should be applied to a ship. basically, filters friendly fire damage float beam_get_ship_damage(beam *b, object *objp, vec3d* hitpos) { // if the beam is on the same team as the object if ( (objp == NULL) || (b == NULL) ) { Int3(); return 0.0f; } if ( (objp->type != OBJ_SHIP) || (objp->instance < 0) || (objp->instance >= MAX_SHIPS) ) { Int3(); return 0.0f; } weapon_info *wip = &Weapon_info[b->weapon_info_index]; if (wip->damage <= 0) return 0.0f; // Not much point in calculating the attenuation if the beam doesn't hurt in the first place. float attenuation = 1.0f; if ((b->damage_threshold >= 0.0f) && (b->damage_threshold < 1.0f)) { float dist = hitpos ? vm_vec_dist(hitpos, &b->last_start) : 0.0f; float range = b->range; float atten_dist = range * b->damage_threshold; if ((range > dist) && (atten_dist < dist)) { attenuation = 1 - ((dist - atten_dist) / (range - atten_dist)); } } float damage = 0.0f; // same team. yikes if ( (b->team == Ships[objp->instance].team) && (wip->damage > The_mission.ai_profile->beam_friendly_damage_cap[Game_skill_level]) ) { damage = The_mission.ai_profile->beam_friendly_damage_cap[Game_skill_level] * attenuation; } else { // normal damage damage = wip->damage * attenuation; } return damage; } // if the beam is likely to tool a given target before its lifetime expires int beam_will_tool_target(beam *b, object *objp) { weapon_info *wip = &Weapon_info[b->weapon_info_index]; float total_strength, damage_in_a_few_seconds, hp_limit, hp_pct; // sanity if(objp == NULL){ return 0; } // if the object is not a ship, bail if(objp->type != OBJ_SHIP){ return 0; } if((objp->instance < 0) || (objp->instance >= MAX_SHIPS)){ return 0; } ship *shipp = &Ships[objp->instance]; total_strength = objp->hull_strength; if (shipp->armor_type_idx != -1) { if (Armor_types[shipp->armor_type_idx].GetPiercingType(wip->damage_type_idx) == SADTF_PIERCING_NONE) { return 0; } hp_limit = Armor_types[shipp->armor_type_idx].GetPiercingLimit(wip->damage_type_idx); if (hp_limit > 0.0f) { hp_pct = total_strength / shipp->ship_max_hull_strength; if (hp_limit >= hp_pct) return 1; } } // calculate total strength, factoring in shield if (!(wip->wi_flags[Weapon::Info_Flags::Pierce_shields])) total_strength += shield_get_strength(objp); // if the beam is going to apply more damage in about 1 and a half than the ship can take damage_in_a_few_seconds = (TOOLTIME / (float)BEAM_DAMAGE_TIME) * wip->damage; return (damage_in_a_few_seconds > total_strength); } float beam_accuracy = 1.0f; DCF(b_aim, "Adjusts the beam accuracy factor (Default is 1.0f)") { dc_stuff_float(&beam_accuracy); } DCF(beam_list, "Lists all beams") { int b_count = 0; for (auto &wi : Weapon_info) { if (wi.wi_flags[Weapon::Info_Flags::Beam]) { ++b_count; dc_printf("Beam %d : %s\n", b_count, wi.name); } } }