mirror of
https://github.com/scp-fs2open/fs2open.github.com.git
synced 2026-11-07 08:15:59 -10:00
Fabian Woltermann
770fce8de5
This introduces a new mechanism for handling bit flags. Instead of using an int (or two, or three) to write bits into, this uses the std::bitset in a wrapper class that accepts an enum class as input. This means that certain classes of errors we've had a few of in the engine, where a coder used the wrong set of flags or checked them against the wrong variable (SF_STEALTH vs SIF_STEALTH, for example) can now be detected at a compiler level rather than not at all.
1111 lines
34 KiB
C++
1111 lines
34 KiB
C++
/*
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* Copyright (C) Volition, Inc. 1999. All rights reserved.
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*
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* All source code herein is the property of Volition, Inc. You may not sell
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* or otherwise commercially exploit the source or things you created based on the
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* source.
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*
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*/
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#include "cmdline/cmdline.h"
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#include "debris/debris.h"
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#include "fireball/fireballs.h"
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#include "freespace.h"
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#include "gamesnd/gamesnd.h"
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#include "globalincs/linklist.h"
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#include "io/timer.h"
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#include "network/multi.h"
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#include "network/multimsgs.h"
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#include "network/multiutil.h"
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#include "object/objcollide.h"
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#include "object/objectsnd.h"
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#include "particle/particle.h"
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#include "radar/radar.h"
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#include "radar/radarsetup.h"
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#include "render/3d.h"
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#include "ship/ship.h"
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#include "ship/shipfx.h"
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#include "species_defs/species_defs.h"
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#include "weapon/weapon.h"
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#define MAX_LIFE 10.0f
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#define MIN_RADIUS_FOR_PERSISTANT_DEBRIS 50 // ship radius at which debris from it becomes persistant
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#define DEBRIS_SOUND_DELAY 2000 // time to start debris sound after created
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#define MAX_HULL_PIECES MAX_DEBRIS_PIECES // limit the number of hull debris chunks that can exist.
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int Num_hull_pieces; // number of hull pieces in existance
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debris Hull_debris_list; // head of linked list for hull debris chunks, for quick search
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debris Debris[MAX_DEBRIS_PIECES];
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int Num_debris_pieces = 0;
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int Debris_inited = 0;
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int Debris_model = -1;
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int Debris_vaporize_model = -1;
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int Debris_num_submodels = 0;
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#define MAX_DEBRIS_DIST 10000.0f // Debris goes away if it's this far away.
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#define DEBRIS_DISTANCE_CHECK_TIME (10*1000) // Check every 10 seconds.
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#define DEBRIS_INDEX(dp) (int)(dp-Debris)
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#define MAX_SPEED_SMALL_DEBRIS 200 // maximum velocity of small debris piece
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#define MAX_SPEED_BIG_DEBRIS 150 // maximum velocity of big debris piece
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#define MAX_SPEED_CAPITAL_DEBRIS 100 // maximum velocity of capital debris piece
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/**
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* Start the sequence of a piece of debris writhing in unholy agony!!!
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*/
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static void debris_start_death_roll(object *debris_obj, debris *debris_p)
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{
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if (debris_p->is_hull) {
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// tell everyone else to blow up the piece of debris
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if( MULTIPLAYER_MASTER )
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send_debris_update_packet(debris_obj,DEBRIS_UPDATE_NUKE);
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int fireball_type = fireball_ship_explosion_type(&Ship_info[debris_p->ship_info_index]);
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if(fireball_type < 0) {
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fireball_type = FIREBALL_EXPLOSION_LARGE1 + rand()%FIREBALL_NUM_LARGE_EXPLOSIONS;
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}
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fireball_create( &debris_obj->pos, fireball_type, FIREBALL_LARGE_EXPLOSION, OBJ_INDEX(debris_obj), debris_obj->radius*1.75f);
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// only play debris destroy sound if hull piece and it has been around for at least 2 seconds
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if ( Missiontime > debris_p->time_started + 2*F1_0 ) {
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snd_play_3d( &Snds[SND_MISSILE_IMPACT1], &debris_obj->pos, &View_position, debris_obj->radius );
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}
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}
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debris_obj->flags.set(Object::Object_Flags::Should_be_dead);
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}
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/**
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* This will get called at the start of each level.
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*/
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void debris_init()
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{
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int i;
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if ( !Debris_inited ) {
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Debris_inited = 1;
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}
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Debris_model = -1;
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Debris_vaporize_model = -1;
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Debris_num_submodels = 0;
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// Reset everything between levels
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Num_debris_pieces = 0;
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for (i=0; i<MAX_DEBRIS_PIECES; i++ ) {
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Debris[i].flags = 0;
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Debris[i].sound_delay = 0;
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Debris[i].objnum = -1;
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}
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Num_hull_pieces = 0;
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list_init(&Hull_debris_list);
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}
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/**
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* Page in debris bitmaps at level load
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*/
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void debris_page_in()
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{
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uint i;
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Debris_model = model_load( NOX("debris01.pof"), 0, NULL );
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if (Debris_model >= 0) {
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polymodel * pm;
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pm = model_get(Debris_model);
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Debris_num_submodels = pm->n_models;
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}
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Debris_vaporize_model = model_load( NOX("debris02.pof"), 0, NULL );
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for (i=0; i<Species_info.size(); i++ )
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{
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species_info *species = &Species_info[i];
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nprintf(( "Paging", "Paging in debris texture '%s'\n", species->debris_texture.filename));
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species->debris_texture.bitmap_id = bm_load(species->debris_texture.filename);
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if (species->debris_texture.bitmap_id < 0)
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{
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Warning( LOCATION, "Couldn't load species %s debris\ntexture, '%s'\n", species->species_name, species->debris_texture.filename);
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}
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bm_page_in_texture(species->debris_texture.bitmap_id);
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}
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}
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MONITOR(NumSmallDebrisRend)
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MONITOR(NumHullDebrisRend)
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/**
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* Removed the ::DEBRIS_EXPIRE flag, and remove item from ::Hull_debris_list
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*/
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void debris_clear_expired_flag(debris *db)
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{
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if ( db->flags & DEBRIS_EXPIRE ) {
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db->flags &= ~DEBRIS_EXPIRE;
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if ( db->is_hull ) {
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Num_hull_pieces--;
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list_remove(Hull_debris_list, db);
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Assert( Num_hull_pieces >= 0 );
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}
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}
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}
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/**
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* Delete the debris object.
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* This is only ever called via obj_delete(). Do not call directly.
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* Use debris_start_death_roll() if you want to force a debris piece to die.
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*/
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void debris_delete( object * obj )
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{
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int num;
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debris *db;
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num = obj->instance;
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Assert( Debris[num].objnum == OBJ_INDEX(obj));
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db = &Debris[num];
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Assert( Num_debris_pieces >= 0 );
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if ( db->is_hull && (db->flags & DEBRIS_EXPIRE) ) {
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debris_clear_expired_flag(db);
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}
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db->flags = 0;
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db->objnum = -1;
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Num_debris_pieces--;
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}
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/**
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* If debris piece *db is far away from all players, make it go away very soon.
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* In single player game, delete if MAX_DEBRIS_DIST from player.
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* In multiplayer game, delete if MAX_DEBRIS_DIST from all players.
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*/
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void maybe_delete_debris(debris *db)
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{
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object *objp;
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if (timestamp_elapsed(db->next_distance_check) && timestamp_elapsed(db->must_survive_until)) {
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if (!(Game_mode & GM_MULTIPLAYER)) { // In single player game, just check against player.
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if (vm_vec_dist_quick(&Player_obj->pos, &Objects[db->objnum].pos) > MAX_DEBRIS_DIST)
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db->lifeleft = 0.1f;
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else
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db->next_distance_check = timestamp(DEBRIS_DISTANCE_CHECK_TIME);
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} else {
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for ( objp = GET_FIRST(&obj_used_list); objp !=END_OF_LIST(&obj_used_list); objp = GET_NEXT(objp) ) {
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if (objp->flags[Object::Object_Flags::Player_ship]) {
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if (vm_vec_dist_quick(&objp->pos, &Objects[db->objnum].pos) < MAX_DEBRIS_DIST) {
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db->next_distance_check = timestamp(DEBRIS_DISTANCE_CHECK_TIME);
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return;
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}
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}
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}
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db->lifeleft = 0.1f;
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}
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}
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}
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MONITOR(NumSmallDebris)
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MONITOR(NumHullDebris)
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/**
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* Do various updates to debris: check if time to die, start fireballs
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* Maybe delete debris if it's very far away from player.
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*
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* @param obj pointer to debris object
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* @param frame_time time elapsed since last debris_move() called
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*/
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void debris_process_post(object * obj, float frame_time)
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{
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int i, num;
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num = obj->instance;
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int objnum = OBJ_INDEX(obj);
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Assert( Debris[num].objnum == objnum );
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debris *db = &Debris[num];
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if ( db->is_hull ) {
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MONITOR_INC(NumHullDebris,1);
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radar_plot_object( obj );
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if ( timestamp_elapsed(db->sound_delay) ) {
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obj_snd_assign(objnum, SND_DEBRIS, &vmd_zero_vector, 0);
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db->sound_delay = 0;
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}
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} else {
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MONITOR_INC(NumSmallDebris,1);
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}
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if ( db->lifeleft >= 0.0f) {
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db->lifeleft -= frame_time;
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if ( db->lifeleft < 0.0f ) {
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debris_start_death_roll(obj, db);
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}
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}
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maybe_delete_debris(db); // Make this debris go away if it's very far away.
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// ================== DO THE ELECTRIC ARCING STUFF =====================
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if ( db->arc_frequency <= 0 ) {
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return; // If arc_frequency <= 0, this piece has no arcs on it
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}
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if ( !timestamp_elapsed(db->fire_timeout) && timestamp_elapsed(db->next_fireball)) {
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db->next_fireball = timestamp_rand(db->arc_frequency,db->arc_frequency*2 );
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db->arc_frequency += 100;
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if (db->is_hull) {
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int n, n_arcs = ((rand()>>5) % 3)+1; // Create 1-3 sparks
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vec3d v1, v2, v3, v4;
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if ( Cmdline_old_collision_sys ) {
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submodel_get_two_random_points( db->model_num, db->submodel_num, &v1, &v2 );
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submodel_get_two_random_points( db->model_num, db->submodel_num, &v3, &v4 );
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} else {
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submodel_get_two_random_points_better( db->model_num, db->submodel_num, &v1, &v2 );
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submodel_get_two_random_points_better( db->model_num, db->submodel_num, &v3, &v4 );
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}
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n = 0;
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int a = 100, b = 1000;
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int lifetime = (myrand()%((b)-(a)+1))+(a);
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// Create the spark effects
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for (i=0; i<MAX_DEBRIS_ARCS; i++ ) {
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if ( !timestamp_valid( db->arc_timestamp[i] ) ) {
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db->arc_timestamp[i] = timestamp(lifetime); // live up to a second
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switch( n ) {
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case 0:
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db->arc_pts[i][0] = v1;
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db->arc_pts[i][1] = v2;
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break;
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case 1:
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db->arc_pts[i][0] = v2;
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db->arc_pts[i][1] = v3;
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break;
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case 2:
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db->arc_pts[i][0] = v2;
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db->arc_pts[i][1] = v4;
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break;
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default:
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Int3();
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}
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n++;
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if ( n == n_arcs )
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break; // Don't need to create anymore
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}
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}
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// rotate v2 out of local coordinates into world.
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// Use v2 since it is used in every bolt. See above switch().
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vec3d snd_pos;
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vm_vec_unrotate(&snd_pos, &v2, &obj->orient);
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vm_vec_add2(&snd_pos, &obj->pos );
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//Play a sound effect
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if ( lifetime > 750 ) {
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// 1.00 second effect
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snd_play_3d( &Snds[SND_DEBRIS_ARC_05], &snd_pos, &View_position, obj->radius );
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} else if ( lifetime > 500 ) {
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// 0.75 second effect
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snd_play_3d( &Snds[SND_DEBRIS_ARC_04], &snd_pos, &View_position, obj->radius );
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} else if ( lifetime > 250 ) {
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// 0.50 second effect
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snd_play_3d( &Snds[SND_DEBRIS_ARC_03], &snd_pos, &View_position, obj->radius );
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} else if ( lifetime > 100 ) {
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// 0.25 second effect
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snd_play_3d( &Snds[SND_DEBRIS_ARC_02], &snd_pos, &View_position, obj->radius );
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} else {
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// 0.10 second effect
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snd_play_3d( &Snds[SND_DEBRIS_ARC_01], &snd_pos, &View_position, obj->radius );
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}
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}
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}
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for (i=0; i<MAX_DEBRIS_ARCS; i++ ) {
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if ( timestamp_valid( db->arc_timestamp[i] ) ) {
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if ( timestamp_elapsed( db->arc_timestamp[i] ) ) {
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// Kill off the spark
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db->arc_timestamp[i] = timestamp(-1);
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} else {
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// Maybe move a vertex.... 20% of the time maybe?
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int mr = myrand();
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if ( mr < RAND_MAX/5 ) {
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vec3d v1, v2;
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if ( Cmdline_old_collision_sys ) {
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submodel_get_two_random_points( db->model_num, db->submodel_num, &v1, &v2 );
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} else {
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submodel_get_two_random_points_better( db->model_num, db->submodel_num, &v1, &v2 );
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}
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db->arc_pts[i][mr % 2] = v1;
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}
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}
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}
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}
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}
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/**
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* Locate the oldest hull debris chunk. Search through the ::Hull_debris_list, which is a list
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* of all the hull debris chunks.
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*/
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int debris_find_oldest()
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{
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int oldest_index;
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fix oldest_time;
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debris *db;
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oldest_index = -1;
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oldest_time = 0x7fffffff;
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for ( db = GET_FIRST(&Hull_debris_list); db != END_OF_LIST(&Hull_debris_list); db = GET_NEXT(db) ) {
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if ( (db->time_started < oldest_time) && !(Objects[db->objnum].flags[Object::Object_Flags::Should_be_dead]) ) {
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oldest_index = DEBRIS_INDEX(db);
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oldest_time = db->time_started;
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}
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}
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return oldest_index;
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}
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#define DEBRIS_ROTVEL_SCALE 5.0f
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void calc_debris_physics_properties( physics_info *pi, vec3d *min, vec3d *max );
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/**
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* Create debris from an object
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*
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* @param source_obj Source object
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* @param model_num Model number
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* @param submodel_num Sub-model number
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* @param pos Position in vector space
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* @param exp_center Explosion center in vector space
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* @param hull_flag Hull flag settings
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* @param exp_force Explosion force, used to assign velocity to pieces. 1.0f assigns velocity like before. 2.0f assigns twice as much to non-inherited part of velocity
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*/
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object *debris_create(object *source_obj, int model_num, int submodel_num, vec3d *pos, vec3d *exp_center, int hull_flag, float exp_force)
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{
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int i, n, objnum, parent_objnum;
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object *obj;
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ship *shipp;
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debris *db;
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polymodel *pm;
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int vaporize;
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physics_info *pi = NULL;
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ship_info *sip = NULL;
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parent_objnum = OBJ_INDEX(source_obj);
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Assert( (source_obj->type == OBJ_SHIP ) || (source_obj->type == OBJ_GHOST));
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Assert( source_obj->instance >= 0 && source_obj->instance < MAX_SHIPS );
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shipp = &Ships[source_obj->instance];
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sip = &Ship_info[shipp->ship_info_index];
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vaporize = (shipp->flags[Ship::Ship_Flags::Vaporize]);
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if ( !hull_flag ) {
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// Make vaporize debris seen from farther away
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float dist = vm_vec_dist_quick( pos, &Eye_position );
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if (vaporize) {
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dist /= 2.0f;
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}
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if ( dist > 200.0f ) {
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return NULL;
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}
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}
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if ( hull_flag && (Num_hull_pieces >= MAX_HULL_PIECES ) ) {
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// cause oldest hull debris chunk to blow up
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n = debris_find_oldest();
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if ( n >= 0 ) {
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debris_start_death_roll(&Objects[Debris[n].objnum], &Debris[n] );
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}
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}
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for (n=0; n<MAX_DEBRIS_PIECES; n++ ) {
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if ( !(Debris[n].flags & DEBRIS_USED) )
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break;
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}
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if (n == MAX_DEBRIS_PIECES) {
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n = debris_find_oldest();
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if (n >= 0)
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debris_start_death_roll(&Objects[Debris[n].objnum], &Debris[n]);
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nprintf(("Warning","Frame %i: Could not create debris, no more slots left\n", Framecount));
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return NULL;
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}
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db = &Debris[n];
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//WMC - We must survive until now, at least.
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db->must_survive_until = timestamp();
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if(hull_flag && sip->debris_min_lifetime >= 0.0f && sip->debris_max_lifetime >= 0.0f)
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{
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db->lifeleft = (( sip->debris_max_lifetime - sip->debris_min_lifetime ) * frand()) + sip->debris_min_lifetime;
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}
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else
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{
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// Create Debris piece n!
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if ( hull_flag ) {
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if (rand() < RAND_MAX/6) // Make some pieces blow up shortly after explosion.
|
|
db->lifeleft = 2.0f * (myrand() * RAND_MAX_1f) + 0.5f;
|
|
else
|
|
db->lifeleft = -1.0f; // large hull pieces stay around forever
|
|
} else {
|
|
db->lifeleft = (myrand() * RAND_MAX_1f) * 2.0f + 0.1f;
|
|
}
|
|
}
|
|
|
|
//WMC - Oh noes, we may need to change lifeleft
|
|
if(hull_flag)
|
|
{
|
|
if(sip->debris_min_lifetime >= 0.0f && sip->debris_max_lifetime >= 0.0f)
|
|
{
|
|
db->must_survive_until = timestamp(fl2i(sip->debris_min_lifetime * 1000.0f));
|
|
db->lifeleft = (( sip->debris_max_lifetime - sip->debris_min_lifetime ) * frand()) + sip->debris_min_lifetime;
|
|
}
|
|
else if(sip->debris_min_lifetime >= 0.0f)
|
|
{
|
|
db->must_survive_until = timestamp(fl2i(sip->debris_min_lifetime * 1000.0f));
|
|
if(db->lifeleft < sip->debris_min_lifetime)
|
|
db->lifeleft = sip->debris_min_lifetime;
|
|
}
|
|
else if(sip->debris_max_lifetime >= 0.0f)
|
|
{
|
|
if(db->lifeleft > sip->debris_max_lifetime)
|
|
db->lifeleft = sip->debris_max_lifetime;
|
|
}
|
|
}
|
|
|
|
// increase lifetime for vaporized debris
|
|
if (vaporize) {
|
|
db->lifeleft *= 3.0f;
|
|
}
|
|
db->flags |= DEBRIS_USED;
|
|
db->is_hull = hull_flag;
|
|
db->source_objnum = parent_objnum;
|
|
db->source_sig = source_obj->signature;
|
|
db->damage_type_idx = shipp->debris_damage_type_idx;
|
|
db->ship_info_index = shipp->ship_info_index;
|
|
db->team = shipp->team;
|
|
db->fire_timeout = 0; // if not changed, timestamp_elapsed() will return false
|
|
db->time_started = Missiontime;
|
|
db->species = Ship_info[shipp->ship_info_index].species;
|
|
db->next_distance_check = (myrand() % 2000) + 4*DEBRIS_DISTANCE_CHECK_TIME;
|
|
db->parent_alt_name = shipp->alt_type_index;
|
|
db->damage_mult = 1.0f;
|
|
|
|
for (i=0; i<MAX_DEBRIS_ARCS; i++ ) {
|
|
db->arc_timestamp[i] = timestamp(-1);
|
|
}
|
|
|
|
if ( db->is_hull ) {
|
|
// Percent of debris pieces with arcs controlled via table (default 50%)
|
|
if (frand() < sip->debris_arc_percent) {
|
|
db->arc_frequency = 1000;
|
|
} else {
|
|
db->arc_frequency = 0;
|
|
}
|
|
} else {
|
|
db->arc_frequency = 0;
|
|
}
|
|
|
|
if ( model_num < 0 ) {
|
|
if (vaporize) {
|
|
db->model_num = Debris_vaporize_model;
|
|
} else {
|
|
db->model_num = Debris_model;
|
|
}
|
|
db->submodel_num = (myrand()>>4) % Debris_num_submodels;
|
|
} else {
|
|
db->model_num = model_num;
|
|
db->submodel_num = submodel_num;
|
|
}
|
|
float radius = submodel_get_radius( db->model_num, db->submodel_num );
|
|
|
|
db->next_fireball = timestamp_rand(500,2000); //start one 1/2 - 2 secs later
|
|
|
|
if ( pos == NULL )
|
|
pos = &source_obj->pos;
|
|
|
|
flagset<Object::Object_Flags> default_flags;
|
|
default_flags.set(Object::Object_Flags::Renders);
|
|
default_flags.set(Object::Object_Flags::Physics);
|
|
default_flags.set(Object::Object_Flags::Collides, hull_flag != 0);
|
|
|
|
objnum = obj_create( OBJ_DEBRIS, parent_objnum, n, &source_obj->orient, pos, radius, default_flags);
|
|
if ( objnum == -1 ) {
|
|
mprintf(("Couldn't create debris object -- out of object slots\n"));
|
|
return NULL;
|
|
}
|
|
|
|
db->objnum = objnum;
|
|
|
|
obj = &Objects[objnum];
|
|
pi = &obj->phys_info;
|
|
|
|
// assign the network signature. The signature will be 0 for non-hull pieces, but since that
|
|
// is our invalid signature, it should be okay.
|
|
obj->net_signature = 0;
|
|
|
|
if ( (Game_mode & GM_MULTIPLAYER) && hull_flag ) {
|
|
obj->net_signature = multi_get_next_network_signature( MULTI_SIG_DEBRIS );
|
|
}
|
|
|
|
if (source_obj->type == OBJ_SHIP) {
|
|
obj->hull_strength = Ships[source_obj->instance].ship_max_hull_strength/8.0f;
|
|
} else
|
|
obj->hull_strength = 10.0f;
|
|
|
|
if (hull_flag) {
|
|
if(sip->debris_min_hitpoints >= 0.0f && sip->debris_max_hitpoints >= 0.0f)
|
|
{
|
|
obj->hull_strength = (( sip->debris_max_hitpoints - sip->debris_min_hitpoints ) * frand()) + sip->debris_min_hitpoints;
|
|
}
|
|
else if(sip->debris_min_hitpoints >= 0.0f)
|
|
{
|
|
if(obj->hull_strength < sip->debris_min_hitpoints)
|
|
obj->hull_strength = sip->debris_min_hitpoints;
|
|
}
|
|
else if(sip->debris_max_hitpoints >= 0.0f)
|
|
{
|
|
if(obj->hull_strength > sip->debris_max_hitpoints)
|
|
obj->hull_strength = sip->debris_max_hitpoints;
|
|
}
|
|
db->damage_mult = sip->debris_damage_mult;
|
|
}
|
|
|
|
Num_debris_pieces++;
|
|
|
|
vec3d rotvel, radial_vel, to_center;
|
|
|
|
if ( exp_center )
|
|
vm_vec_sub( &to_center,pos, exp_center );
|
|
else
|
|
vm_vec_zero(&to_center);
|
|
|
|
float scale;
|
|
|
|
if ( hull_flag ) {
|
|
float t;
|
|
scale = exp_force * i2fl((myrand()%20) + 10); // for radial_vel away from location of blast center
|
|
db->sound_delay = timestamp(DEBRIS_SOUND_DELAY);
|
|
|
|
// set up physics mass and I_inv for hull debris pieces
|
|
pm = model_get(model_num);
|
|
vec3d *min, *max;
|
|
min = &pm->submodel[submodel_num].min;
|
|
max = &pm->submodel[submodel_num].max;
|
|
calc_debris_physics_properties( &obj->phys_info, min, max );
|
|
|
|
// limit the amount of time that fireballs appear
|
|
// let fireball length be linked to radius of ship. Range is .33 radius => 3.33 radius seconds.
|
|
t = 1000*Objects[db->source_objnum].radius/3 + myrand()%(fl2i(1000*3*Objects[db->source_objnum].radius));
|
|
db->fire_timeout = timestamp(fl2i(t)); // fireballs last from 5 - 30 seconds
|
|
|
|
if ( Objects[db->source_objnum].radius < MIN_RADIUS_FOR_PERSISTANT_DEBRIS ) {
|
|
db->flags |= DEBRIS_EXPIRE; // debris can expire
|
|
Num_hull_pieces++;
|
|
list_append(&Hull_debris_list, db);
|
|
} else {
|
|
nprintf(("Alan","A forever chunk of debris was created from ship with radius %f\n",Objects[db->source_objnum].radius));
|
|
}
|
|
}
|
|
else {
|
|
scale = exp_force * i2fl((myrand()%20) + 10); // for radial_vel away from blast center (non-hull)
|
|
}
|
|
|
|
if ( vm_vec_mag_squared( &to_center ) < 0.1f ) {
|
|
vm_vec_rand_vec_quick(&radial_vel);
|
|
vm_vec_scale(&radial_vel, scale );
|
|
}
|
|
else {
|
|
vm_vec_normalize(&to_center);
|
|
vm_vec_copy_scale(&radial_vel, &to_center, scale );
|
|
}
|
|
|
|
// DA: here we need to vel_from_rot = w x to_center, where w is world is unrotated to world coords and offset is the
|
|
// displacement fromt the center of the parent object to the center of the debris piece
|
|
vec3d world_rotvel, vel_from_rotvel;
|
|
vm_vec_unrotate ( &world_rotvel, &source_obj->phys_info.rotvel, &source_obj->orient );
|
|
vm_vec_cross ( &vel_from_rotvel, &world_rotvel, &to_center );
|
|
vm_vec_scale ( &vel_from_rotvel, DEBRIS_ROTVEL_SCALE);
|
|
|
|
vm_vec_add (&obj->phys_info.vel, &radial_vel, &source_obj->phys_info.vel);
|
|
vm_vec_add2(&obj->phys_info.vel, &vel_from_rotvel);
|
|
|
|
// make sure rotational velocity does not get too high
|
|
if (radius < 1.0) {
|
|
radius = 1.0f;
|
|
}
|
|
|
|
scale = ( 6.0f + i2fl(myrand()%4) ) / radius;
|
|
|
|
vm_vec_rand_vec_quick(&rotvel);
|
|
vm_vec_scale(&rotvel, scale);
|
|
|
|
pi->flags |= PF_DEAD_DAMP;
|
|
pi->rotvel = rotvel;
|
|
check_rotvel_limit( &obj->phys_info );
|
|
|
|
// check that debris is not created with too high a velocity
|
|
if (hull_flag)
|
|
{
|
|
shipfx_debris_limit_speed(db, shipp);
|
|
}
|
|
|
|
// blow out his reverse thrusters. Or drag, same thing.
|
|
pi->rotdamp = 10000.0f;
|
|
pi->side_slip_time_const = 10000.0f;
|
|
pi->flags |= (PF_REDUCED_DAMP | PF_DEAD_DAMP); // set damping equal for all axis and not changable
|
|
|
|
vm_vec_zero(&pi->max_vel); // make so he can't turn on his own VOLITION anymore.
|
|
vm_vec_zero(&pi->max_rotvel); // make so he can't change speed on his own VOLITION anymore.
|
|
|
|
// ensure vel is valid
|
|
Assert( !vm_is_vec_nan(&obj->phys_info.vel) );
|
|
|
|
return obj;
|
|
}
|
|
|
|
/**
|
|
* Alas, poor debris_obj got whacked. Fortunately, we know who did it, where and how hard, so we
|
|
* can do something about it.
|
|
*/
|
|
void debris_hit(object *debris_obj, object *other_obj, vec3d *hitpos, float damage)
|
|
{
|
|
debris *debris_p = &Debris[debris_obj->instance];
|
|
|
|
// Do a little particle spark shower to show we hit
|
|
{
|
|
particle::particle_emitter pe;
|
|
|
|
pe.pos = *hitpos; // Where the particles emit from
|
|
pe.vel = debris_obj->phys_info.vel; // Initial velocity of all the particles
|
|
|
|
vec3d tmp_norm;
|
|
vm_vec_sub( &tmp_norm, hitpos, &debris_obj->pos );
|
|
vm_vec_normalize_safe(&tmp_norm);
|
|
|
|
pe.normal = tmp_norm; // What normal the particle emit around
|
|
pe.normal_variance = 0.3f; // How close they stick to that normal 0=good, 1=360 degree
|
|
pe.min_rad = 0.20f; // Min radius
|
|
pe.max_rad = 0.40f; // Max radius
|
|
|
|
// Sparks for first time at this spot
|
|
pe.num_low = 10; // Lowest number of particles to create
|
|
pe.num_high = 10; // Highest number of particles to create
|
|
pe.normal_variance = 0.3f; // How close they stick to that normal 0=good, 1=360 degree
|
|
pe.min_vel = 0.0f; // How fast the slowest particle can move
|
|
pe.max_vel = 10.0f; // How fast the fastest particle can move
|
|
pe.min_life = 0.25f; // How long the particles live
|
|
pe.max_life = 0.75f; // How long the particles live
|
|
particle::emit( &pe, particle::PARTICLE_FIRE, 0 );
|
|
}
|
|
|
|
// multiplayer clients bail here
|
|
if(MULTIPLAYER_CLIENT){
|
|
return;
|
|
}
|
|
|
|
if ( damage < 0.0f ) {
|
|
damage = 0.0f;
|
|
}
|
|
|
|
debris_obj->hull_strength -= damage;
|
|
|
|
if (debris_obj->hull_strength < 0.0f) {
|
|
debris_start_death_roll(debris_obj, debris_p );
|
|
} else {
|
|
// otherwise, give all the other players an update on the debris
|
|
if(MULTIPLAYER_MASTER){
|
|
send_debris_update_packet(debris_obj,DEBRIS_UPDATE_UPDATE);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* See if poor debris object *obj got whacked by evil *other_obj at point *hitpos.
|
|
* NOTE: debris_hit_info pointer NULL for debris:weapon collision, otherwise debris:ship collision.
|
|
* @return true if hit, else return false.
|
|
*/
|
|
int debris_check_collision(object *pdebris, object *other_obj, vec3d *hitpos, collision_info_struct *debris_hit_info, vec3d* hitNormal)
|
|
{
|
|
mc_info mc;
|
|
mc_info_init(&mc);
|
|
int num;
|
|
|
|
Assert( pdebris->type == OBJ_DEBRIS );
|
|
|
|
num = pdebris->instance;
|
|
Assert( num >= 0 );
|
|
|
|
Assert( Debris[num].objnum == OBJ_INDEX(pdebris));
|
|
|
|
// debris_hit_info NULL - so debris-weapon collision
|
|
if ( debris_hit_info == NULL ) {
|
|
// debris weapon collision
|
|
Assert( other_obj->type == OBJ_WEAPON );
|
|
mc.model_instance_num = -1;
|
|
mc.model_num = Debris[num].model_num; // Fill in the model to check
|
|
mc.submodel_num = Debris[num].submodel_num;
|
|
model_clear_instance( mc.model_num );
|
|
mc.orient = &pdebris->orient; // The object's orient
|
|
mc.pos = &pdebris->pos; // The object's position
|
|
mc.p0 = &other_obj->last_pos; // Point 1 of ray to check
|
|
mc.p1 = &other_obj->pos; // Point 2 of ray to check
|
|
mc.flags = (MC_CHECK_MODEL | MC_SUBMODEL);
|
|
|
|
if (model_collide(&mc)) {
|
|
*hitpos = mc.hit_point_world;
|
|
|
|
if (hitNormal)
|
|
{
|
|
vec3d normal;
|
|
model_find_world_dir(&normal, &mc.hit_normal, mc.model_num, mc.hit_submodel, mc.orient);
|
|
|
|
*hitNormal = normal;
|
|
}
|
|
}
|
|
|
|
weapon *wp = &Weapons[other_obj->instance];
|
|
wp->collisionInfo = new mc_info; // The weapon will free this memory later
|
|
memcpy(wp->collisionInfo, &mc, sizeof(mc_info));
|
|
|
|
return mc.num_hits;
|
|
}
|
|
|
|
// debris ship collision -- use debris_hit_info to calculate physics
|
|
object *pship_obj = other_obj;
|
|
Assert( pship_obj->type == OBJ_SHIP );
|
|
|
|
object *heavy = debris_hit_info->heavy;
|
|
object *lighter = debris_hit_info->light;
|
|
object *heavy_obj = heavy;
|
|
object *light_obj = lighter;
|
|
|
|
vec3d zero, p0, p1;
|
|
vm_vec_zero(&zero);
|
|
vm_vec_sub(&p0, &lighter->last_pos, &heavy->last_pos);
|
|
vm_vec_sub(&p1, &lighter->pos, &heavy->pos);
|
|
|
|
mc.pos = &zero; // The object's position
|
|
mc.p0 = &p0; // Point 1 of ray to check
|
|
mc.p1 = &p1; // Point 2 of ray to check
|
|
|
|
// find the light object's position in the heavy object's reference frame at last frame and also in this frame.
|
|
vec3d p0_temp, p0_rotated;
|
|
|
|
// Collision detection from rotation enabled if at rotaion is less than 30 degree in frame
|
|
// This should account for all ships
|
|
if ( (vm_vec_mag_squared(&heavy->phys_info.rotvel) * flFrametime*flFrametime) < (PI*PI/36) ) {
|
|
// collide_rotate calculate (1) start position and (2) relative velocity
|
|
debris_hit_info->collide_rotate = 1;
|
|
vm_vec_rotate(&p0_temp, &p0, &heavy->last_orient);
|
|
vm_vec_unrotate(&p0_rotated, &p0_temp, &heavy->orient);
|
|
mc.p0 = &p0_rotated; // Point 1 of ray to check
|
|
vm_vec_sub(&debris_hit_info->light_rel_vel, &p1, &p0_rotated);
|
|
vm_vec_scale(&debris_hit_info->light_rel_vel, 1/flFrametime);
|
|
} else {
|
|
debris_hit_info->collide_rotate = 0;
|
|
vm_vec_sub(&debris_hit_info->light_rel_vel, &lighter->phys_info.vel, &heavy->phys_info.vel);
|
|
}
|
|
|
|
int mc_ret_val = 0;
|
|
|
|
if ( debris_hit_info->heavy == pship_obj ) { // ship is heavier, so debris is sphere. Check sphere collision against ship poly model
|
|
mc.model_instance_num = Ships[pship_obj->instance].model_instance_num;
|
|
mc.model_num = Ship_info[Ships[pship_obj->instance].ship_info_index].model_num; // Fill in the model to check
|
|
mc.orient = &pship_obj->orient; // The object's orient
|
|
mc.radius = pdebris->radius;
|
|
mc.flags = (MC_CHECK_MODEL | MC_CHECK_SPHERELINE);
|
|
|
|
// copy important data
|
|
int copy_flags = mc.flags; // make a copy of start end positions of sphere in big ship RF
|
|
vec3d copy_p0, copy_p1;
|
|
copy_p0 = *mc.p0;
|
|
copy_p1 = *mc.p1;
|
|
|
|
// first test against the sphere - if this fails then don't do any submodel tests
|
|
mc.flags = MC_ONLY_SPHERE | MC_CHECK_SPHERELINE;
|
|
|
|
SCP_vector<int> submodel_vector;
|
|
polymodel_instance *pmi;
|
|
|
|
if (model_collide(&mc)) {
|
|
|
|
// Set earliest hit time
|
|
debris_hit_info->hit_time = FLT_MAX;
|
|
|
|
// Do collision the cool new way
|
|
if ( debris_hit_info->collide_rotate ) {
|
|
SCP_vector<int>::iterator smv;
|
|
|
|
// We collide with the sphere, find the list of rotating submodels and test one at a time
|
|
model_get_rotating_submodel_list(&submodel_vector, heavy_obj);
|
|
|
|
// Get polymodel and turn off all rotating submodels, collide against only 1 at a time.
|
|
pmi = model_get_instance(Ships[heavy_obj->instance].model_instance_num);
|
|
|
|
// turn off all rotating submodels and test for collision
|
|
for (smv = submodel_vector.begin(); smv != submodel_vector.end(); ++smv) {
|
|
pmi->submodel[*smv].collision_checked = true;
|
|
}
|
|
|
|
// reset flags to check MC_CHECK_MODEL | MC_CHECK_SPHERELINE and maybe MC_CHECK_INVISIBLE_FACES and MC_SUBMODEL_INSTANCE
|
|
mc.flags = copy_flags | MC_SUBMODEL_INSTANCE;
|
|
|
|
if (Ship_info[Ships[pship_obj->instance].ship_info_index].collision_lod > -1) {
|
|
mc.lod = Ship_info[Ships[pship_obj->instance].ship_info_index].collision_lod;
|
|
}
|
|
|
|
// check each submodel in turn
|
|
for (smv = submodel_vector.begin(); smv != submodel_vector.end(); ++smv) {
|
|
// turn on submodel for collision test
|
|
pmi->submodel[*smv].collision_checked = false;
|
|
|
|
// set angles for last frame (need to set to prev to get p0)
|
|
angles copy_angles = pmi->submodel[*smv].angs;
|
|
|
|
// find the start and end positions of the sphere in submodel RF
|
|
pmi->submodel[*smv].angs = pmi->submodel[*smv].prev_angs;
|
|
world_find_model_instance_point(&p0, &light_obj->last_pos, pmi, *smv, &heavy_obj->last_orient, &heavy_obj->last_pos);
|
|
|
|
pmi->submodel[*smv].angs = copy_angles;
|
|
world_find_model_instance_point(&p1, &light_obj->pos, pmi, *smv, &heavy_obj->orient, &heavy_obj->pos);
|
|
|
|
mc.p0 = &p0;
|
|
mc.p1 = &p1;
|
|
|
|
mc.orient = &vmd_identity_matrix;
|
|
mc.submodel_num = *smv;
|
|
|
|
if ( model_collide(&mc) ) {
|
|
if ( mc.hit_dist < debris_hit_info->hit_time ) {
|
|
mc_ret_val = 1;
|
|
|
|
// set up debris_hit_info common
|
|
set_hit_struct_info(debris_hit_info, &mc, SUBMODEL_ROT_HIT);
|
|
model_instance_find_world_point(&debris_hit_info->hit_pos, &mc.hit_point, mc.model_instance_num, mc.hit_submodel, &heavy_obj->orient, &zero);
|
|
|
|
// set up debris_hit_info for rotating submodel
|
|
if (debris_hit_info->edge_hit == 0) {
|
|
model_instance_find_obj_dir(&debris_hit_info->collision_normal, &mc.hit_normal, mc.model_instance_num, mc.hit_submodel, &heavy_obj->orient);
|
|
}
|
|
|
|
// find position in submodel RF of light object at collison
|
|
vec3d int_light_pos, diff;
|
|
vm_vec_sub(&diff, mc.p1, mc.p0);
|
|
vm_vec_scale_add(&int_light_pos, mc.p0, &diff, mc.hit_dist);
|
|
model_instance_find_world_point(&debris_hit_info->light_collision_cm_pos, &int_light_pos, mc.model_instance_num, mc.hit_submodel, &heavy_obj->orient, &zero);
|
|
}
|
|
}
|
|
// Don't look at this submodel again
|
|
pmi->submodel[*smv].collision_checked = true;
|
|
}
|
|
}
|
|
|
|
// Recover and do usual ship_ship collision, but without rotating submodels
|
|
mc.flags = copy_flags;
|
|
*mc.p0 = copy_p0;
|
|
*mc.p1 = copy_p1;
|
|
mc.orient = &heavy_obj->orient;
|
|
|
|
// usual ship_ship collision test
|
|
if ( model_collide(&mc) ) {
|
|
// check if this is the earliest hit
|
|
if (mc.hit_dist < debris_hit_info->hit_time) {
|
|
mc_ret_val = 1;
|
|
|
|
set_hit_struct_info(debris_hit_info, &mc, SUBMODEL_NO_ROT_HIT);
|
|
|
|
// get collision normal if not edge hit
|
|
if (debris_hit_info->edge_hit == 0) {
|
|
model_instance_find_obj_dir(&debris_hit_info->collision_normal, &mc.hit_normal, Ships[heavy_obj->instance].model_instance_num, mc.hit_submodel, &heavy_obj->orient);
|
|
}
|
|
|
|
// find position in submodel RF of light object at collison
|
|
vec3d diff;
|
|
vm_vec_sub(&diff, mc.p1, mc.p0);
|
|
vm_vec_scale_add(&debris_hit_info->light_collision_cm_pos, mc.p0, &diff, mc.hit_dist);
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
} else {
|
|
// Debris is heavier obj
|
|
mc.model_instance_num = -1;
|
|
mc.model_num = Debris[num].model_num; // Fill in the model to check
|
|
mc.submodel_num = Debris[num].submodel_num;
|
|
model_clear_instance( mc.model_num );
|
|
mc.orient = &pdebris->orient; // The object's orient
|
|
mc.radius = model_get_core_radius(Ship_info[Ships[pship_obj->instance].ship_info_index].model_num);
|
|
|
|
// check for collision between debris model and ship sphere
|
|
mc.flags = (MC_CHECK_MODEL | MC_SUBMODEL | MC_CHECK_SPHERELINE);
|
|
|
|
mc_ret_val = model_collide(&mc);
|
|
|
|
if (mc_ret_val) {
|
|
set_hit_struct_info(debris_hit_info, &mc, SUBMODEL_NO_ROT_HIT);
|
|
|
|
// set normal if not edge hit
|
|
if ( !debris_hit_info->edge_hit ) {
|
|
vm_vec_unrotate(&debris_hit_info->collision_normal, &mc.hit_normal, &heavy->orient);
|
|
}
|
|
|
|
// find position in submodel RF of light object at collison
|
|
vec3d diff;
|
|
vm_vec_sub(&diff, mc.p1, mc.p0);
|
|
vm_vec_scale_add(&debris_hit_info->light_collision_cm_pos, mc.p0, &diff, mc.hit_dist);
|
|
|
|
}
|
|
}
|
|
|
|
|
|
if ( mc_ret_val ) {
|
|
|
|
// SET PHYSICS PARAMETERS
|
|
// already have (hitpos - heavy) and light_cm_pos
|
|
// get heavy cm pos - already have light_cm_pos
|
|
debris_hit_info->heavy_collision_cm_pos = zero;
|
|
|
|
// get r_heavy and r_light
|
|
debris_hit_info->r_heavy = debris_hit_info->hit_pos;
|
|
vm_vec_sub(&debris_hit_info->r_light, &debris_hit_info->hit_pos, &debris_hit_info->light_collision_cm_pos);
|
|
|
|
// set normal for edge hit
|
|
if ( debris_hit_info->edge_hit ) {
|
|
vm_vec_copy_normalize(&debris_hit_info->collision_normal, &debris_hit_info->r_light);
|
|
vm_vec_negate(&debris_hit_info->collision_normal);
|
|
}
|
|
|
|
// get world hitpos
|
|
vm_vec_add(hitpos, &debris_hit_info->heavy->pos, &debris_hit_info->r_heavy);
|
|
|
|
return 1;
|
|
} else {
|
|
// no hit
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return the team field for a debris object
|
|
*/
|
|
int debris_get_team(object *objp)
|
|
{
|
|
Assert( objp->type == OBJ_DEBRIS );
|
|
Assert( objp->instance >= 0 && objp->instance < MAX_DEBRIS_PIECES );
|
|
return Debris[objp->instance].team;
|
|
}
|
|
|
|
/**
|
|
* Fills in debris physics properties when created, specifically mass and moment of inertia
|
|
*/
|
|
void calc_debris_physics_properties( physics_info *pi, vec3d *mins, vec3d *maxs )
|
|
{
|
|
float dx, dy, dz, mass;
|
|
dx = maxs->xyz.x - mins->xyz.x;
|
|
dy = maxs->xyz.y - mins->xyz.y;
|
|
dz = maxs->xyz.z - mins->xyz.z;
|
|
|
|
// John, with new bspgen, just set pi->mass = mass
|
|
mass = 0.12f * dx * dy * dz;
|
|
pi->mass = (float) pow(mass, 0.6666667f) * 4.65f;
|
|
|
|
pi->I_body_inv.vec.rvec.xyz.x = 12.0f / (pi->mass * (dy*dy + dz*dz));
|
|
pi->I_body_inv.vec.rvec.xyz.y = 0.0f;
|
|
pi->I_body_inv.vec.rvec.xyz.z = 0.0f;
|
|
|
|
pi->I_body_inv.vec.uvec.xyz.x = 0.0f;
|
|
pi->I_body_inv.vec.uvec.xyz.y = 12.0f / (pi->mass * (dx*dx + dz*dz));
|
|
pi->I_body_inv.vec.uvec.xyz.z = 0.0f;
|
|
|
|
pi->I_body_inv.vec.fvec.xyz.x = 0.0f;
|
|
pi->I_body_inv.vec.fvec.xyz.y = 0.0f;
|
|
pi->I_body_inv.vec.fvec.xyz.z = 12.0f / (pi->mass * (dx*dx + dy*dy));
|
|
}
|
|
|
|
/**
|
|
* Renders debris
|
|
*/
|
|
void debris_render(object * obj, draw_list *scene)
|
|
{
|
|
int i, num, swapped;
|
|
polymodel *pm;
|
|
debris *db;
|
|
|
|
|
|
swapped = -1;
|
|
pm = NULL;
|
|
num = obj->instance;
|
|
|
|
Assert(num >= 0 && num < MAX_DEBRIS_PIECES);
|
|
db = &Debris[num];
|
|
|
|
Assert(db->flags & DEBRIS_USED);
|
|
|
|
texture_info *tbase = NULL;
|
|
|
|
model_clear_instance( db->model_num );
|
|
|
|
// Swap in a different texture depending on the species
|
|
if (db->species >= 0)
|
|
{
|
|
pm = model_get( db->model_num );
|
|
|
|
//WMC - Someday, we should have glowing debris.
|
|
if ( pm != NULL && (pm->n_textures == 1) ) {
|
|
tbase = &pm->maps[0].textures[TM_BASE_TYPE];
|
|
swapped = tbase->GetTexture();
|
|
tbase->SetTexture(Species_info[db->species].debris_texture.bitmap_id);
|
|
}
|
|
}
|
|
|
|
// Only render electrical arcs if within 500m of the eye (for a 10m piece)
|
|
if ( vm_vec_dist_quick( &obj->pos, &Eye_position ) < obj->radius*50.0f ) {
|
|
for (i=0; i<MAX_DEBRIS_ARCS; i++ ) {
|
|
if ( timestamp_valid( db->arc_timestamp[i] ) ) {
|
|
model_add_arc( db->model_num, db->submodel_num, &db->arc_pts[i][0], &db->arc_pts[i][1], MARC_TYPE_NORMAL );
|
|
}
|
|
}
|
|
}
|
|
|
|
model_render_params render_info;
|
|
|
|
if ( db->is_hull ) {
|
|
MONITOR_INC(NumHullDebrisRend, 1);
|
|
} else {
|
|
MONITOR_INC(NumSmallDebrisRend, 1);
|
|
render_info.set_flags(MR_NO_LIGHTING);
|
|
}
|
|
|
|
submodel_render_queue( &render_info, scene, db->model_num, db->submodel_num, &obj->orient, &obj->pos );
|
|
|
|
if (tbase != NULL && (swapped!=-1) && pm) {
|
|
tbase->SetTexture(swapped);
|
|
}
|
|
}
|