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291 lines
10 KiB
C++
291 lines
10 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* aint32 with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*
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* Based on the original sources
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* Faery Tale II -- The Halls of the Dead
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* (c) 1993-1996 The Wyrmkeep Entertainment Co.
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*/
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#include "saga2/saga2.h"
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#include "saga2/spelshow.h"
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#include "saga2/spelvals.h"
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#include "saga2/tilevect.h"
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namespace Saga2 {
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// ------------------------------------------------------------------
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// Spell Display Initialization handlers
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//
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// What is primarily done in these routines is to set up
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// the positions, velocities & accelerations of the individual
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// effectrons
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// In most cases, once the effectrons are given their initial
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// push they can be updated by just adding the velocity to the
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// position.
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// Sprite directionality is also set up here
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//
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/* ===================================================================== *
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Inlines
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* ===================================================================== */
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#define randOff (randomVector(TilePoint(-1,-1,0),TilePoint(1,1,0)))
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/* ===================================================================== *
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Effect specific code
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* ===================================================================== */
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// ------------------------------------------------------------------
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// null effect
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SPELLINITFUNCTION(invisibleSpellInit) {
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effectron->velocity = TilePoint(0, 0, 0);
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effectron->acceleration = TilePoint(0, 0, 0);
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}
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// ------------------------------------------------------------------
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// aura that tracks target
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SPELLINITFUNCTION(auraSpellInit) {
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if (effectron->parent->maxAge)
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effectron->totalSteps = effectron->parent->maxAge;
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else
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effectron->totalSteps = 20;
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effectron->current = effectron->parent->target->getPoint();
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effectron->velocity = TilePoint(0, 0, 0);
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effectron->acceleration = TilePoint(0, 0, 0);
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}
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// ------------------------------------------------------------------
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// aura that tracks target (in front)
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SPELLINITFUNCTION(glowSpellInit) {
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if (effectron->parent->maxAge)
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effectron->totalSteps = effectron->parent->maxAge;
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else
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effectron->totalSteps = 20;
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effectron->current = effectron->parent->target->getPoint() - TilePoint(1, 1, 0);
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effectron->finish = effectron->current;
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effectron->velocity = TilePoint(0, 0, 0);
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effectron->acceleration = TilePoint(0, 0, 0);
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}
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// ------------------------------------------------------------------
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// sprites that surround target
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SPELLINITFUNCTION(wallSpellInit) {
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if (effectron->parent->maxAge)
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effectron->totalSteps = effectron->parent->maxAge;
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else
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effectron->totalSteps = 20;
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effectron->current = effectron->parent->target->getPoint();
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effectron->velocity = WallVectors[effectron->partno] * wallSpellRadius / 3;
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effectron->current = effectron->parent->target->getPoint() + effectron->velocity;
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effectron->acceleration = TilePoint(0, 0, 0);
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}
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// ------------------------------------------------------------------
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// projectile from caster to target
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SPELLINITFUNCTION(projectileSpellInit) {
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effectron->start = effectron->current;
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effectron->finish = effectron->parent->target->getPoint();
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TilePoint tp = (effectron->finish - effectron->start);
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effectron->totalSteps = 1 + (tp.magnitude() / (2 * SpellJumpiness));
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effectron->velocity = tp / effectron->totalSteps;
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effectron->acceleration = TilePoint(0, 0, 0);
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}
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// ------------------------------------------------------------------
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// bi-directional beams of energy
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SPELLINITFUNCTION(exchangeSpellInit) {
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if (effectron->partno % 2) {
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effectron->finish = effectron->current;
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effectron->start = effectron->parent->target->getPoint();
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} else {
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effectron->start = effectron->current;
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effectron->finish = effectron->parent->target->getPoint();
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}
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TilePoint tp = (effectron->finish - effectron->start);
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effectron->totalSteps = 1 + (tp.magnitude() / (SpellJumpiness));
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effectron->velocity = tp / effectron->totalSteps;
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effectron->totalSteps += (effectron->partno / 2);
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effectron->acceleration = TilePoint(0, 0, 0);
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effectron->current = effectron->start;
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}
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// ------------------------------------------------------------------
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// lightning bolt shaped spell
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SPELLINITFUNCTION(boltSpellInit) {
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effectron->stepNo = 0;
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if (effectron->parent->maxAge)
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effectron->totalSteps = effectron->parent->maxAge;
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else
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effectron->totalSteps = 1 + (boltSpellLength / (SpellJumpiness * 3));
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effectron->start = effectron->current;
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effectron->finish = effectron->parent->target->getPoint();
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TilePoint tVect = effectron->finish - effectron->start ;
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setMagnitude(tVect, boltSpellLength);
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TilePoint orth = rightVector(tVect, 0);
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setMagnitude(orth, boltSpellWidth * (effectron->partno % 3 - 1) / 6);
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TilePoint offVect = tVect * ((effectron->partno / 3) % 3) / (SpellJumpiness * 3);
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effectron->start += orth;
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effectron->finish += orth + offVect;
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effectron->velocity = tVect / effectron->totalSteps + randOff;
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effectron->acceleration = TilePoint(0, 0, 0);
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effectron->current = effectron->start;
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}
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// ------------------------------------------------------------------
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// narrow bolt
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SPELLINITFUNCTION(beamSpellInit) {
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effectron->stepNo = 0;
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if (effectron->parent->maxAge)
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effectron->totalSteps = effectron->parent->maxAge;
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else
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effectron->totalSteps = 1 + (beamSpellLength / (SpellJumpiness));
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effectron->start = effectron->current;
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effectron->finish = effectron->parent->target->getPoint();
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TilePoint tVect = effectron->finish - effectron->start ;
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setMagnitude(tVect, beamSpellLength);
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TilePoint orth = rightVector(tVect, 0);
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setMagnitude(orth, beamSpellWidth / 2);
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effectron->start += (tVect * effectron->partno) / effectron->totalSteps;
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effectron->finish = effectron->start;
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effectron->velocity = orth;
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effectron->acceleration = TilePoint(0, 0, 0);
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effectron->current = effectron->start;
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}
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// ------------------------------------------------------------------
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// narrow cone shaped spell
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SPELLINITFUNCTION(coneSpellInit) {
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effectron->stepNo = 0;
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effectron->totalSteps = 1 + (coneSpellLength / (SpellJumpiness * 3));
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effectron->start = effectron->current;
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effectron->finish = effectron->parent->target->getPoint();
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TilePoint tVect = effectron->finish - effectron->start ;
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setMagnitude(tVect, coneSpellLength);
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TilePoint orth = rightVector(tVect, 0);
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setMagnitude(orth, coneSpellWidth * (effectron->partno % 9 - 4) / 8);
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effectron->finish = effectron->start + tVect + orth;
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effectron->velocity = (effectron->finish - effectron->start) / effectron->totalSteps + randOff;
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effectron->acceleration = TilePoint(0, 0, 0);
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}
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// ------------------------------------------------------------------
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// wide cone shaped spell
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SPELLINITFUNCTION(waveSpellInit) {
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effectron->stepNo = 0;
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effectron->totalSteps = 1 + (coneSpellLength / (SpellJumpiness * 2));
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effectron->start = effectron->current;
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effectron->finish = effectron->parent->target->getPoint();
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TilePoint tVect = effectron->finish - effectron->start ;
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setMagnitude(tVect, waveSpellLength);
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TilePoint orth = rightVector(tVect, 0);
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setMagnitude(orth, waveSpellWidth * (effectron->partno % 17 - 8) / 8);
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effectron->finish = effectron->start + tVect + orth;
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effectron->velocity = (effectron->finish - effectron->start) / effectron->totalSteps + randOff;
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effectron->acceleration = TilePoint(0, 0, 0);
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}
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// ------------------------------------------------------------------
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// small exploding ball
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SPELLINITFUNCTION(ballSpellInit) {
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effectron->stepNo = 0;
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effectron->start = effectron->current;
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effectron->finish = FireballVectors[effectron->partno];
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setMagnitude(effectron->finish, ballSpellRadius);
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effectron->finish = effectron->finish + effectron->start;
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effectron->totalSteps = 1 + (ballSpellRadius / SpellJumpiness);
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effectron->acceleration = TilePoint(0, 0, 0);
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TilePoint tp = (effectron->finish - effectron->start);
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effectron->totalSteps = 1 + (tp.magnitude() / SpellJumpiness);
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effectron->velocity = tp / effectron->totalSteps;
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effectron->velocity.z = 0;
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effectron->acceleration = TilePoint(0, 0, 0);
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}
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// ------------------------------------------------------------------
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// square exploding ball
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SPELLINITFUNCTION(squareSpellInit) {
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effectron->stepNo = 0;
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effectron->start = effectron->current;
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effectron->finish = SquareSpellVectors[effectron->partno];
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setMagnitude(effectron->finish, effectron->finish.magnitude()*squareSpellSize / 4);
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effectron->finish = effectron->finish + effectron->start;
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effectron->totalSteps = 1 + (squareSpellSize / SpellJumpiness);
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effectron->acceleration = TilePoint(0, 0, 0);
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TilePoint tp = (effectron->finish - effectron->start);
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effectron->totalSteps = 1 + (tp.magnitude() / SpellJumpiness);
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effectron->velocity = tp / effectron->totalSteps;
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effectron->velocity.z = 0;
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effectron->acceleration = TilePoint(0, 0, 0);
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}
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// ------------------------------------------------------------------
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// large exploding ball
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SPELLINITFUNCTION(stormSpellInit) {
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effectron->stepNo = 0;
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effectron->start = effectron->current;
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effectron->finish = FireballVectors[effectron->partno];
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setMagnitude(effectron->finish, ballSpellRadius);
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effectron->finish = effectron->finish + effectron->start;
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effectron->totalSteps = 1 + (ballSpellRadius / SpellJumpiness);
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effectron->acceleration = TilePoint(0, 0, 0);
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TilePoint tp = (effectron->finish - effectron->start);
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effectron->totalSteps = 1 + (2 * tp.magnitude() / SpellJumpiness);
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effectron->velocity = tp / effectron->totalSteps;
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effectron->velocity.z = 0;
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effectron->acceleration = TilePoint(0, 0, 0);
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}
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} // end of namespace Saga2
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