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736ec20d4d
Don't include the lazy precompiled.h everywhere, only what's required for the compilation unit. platform.h needs to be included instead to provide all essential defines and types. All includes use the relative path to the neo or the game specific root. Move all idlib related includes from idlib/Lib.h to precompiled.h. precompiled.h still exists for the MFC stuff in tools/. Add some missing header guards.
422 lines
12 KiB
C++
422 lines
12 KiB
C++
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code 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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You should have received a copy of the GNU General Public License
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along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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#include "sys/platform.h"
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#include "renderer/ModelManager.h"
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#include "Game_local.h"
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#include "SmokeParticles.h"
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static const char *smokeParticle_SnapshotName = "_SmokeParticle_Snapshot_";
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/*
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================
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idSmokeParticles::idSmokeParticles
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================
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*/
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idSmokeParticles::idSmokeParticles( void ) {
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initialized = false;
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memset( &renderEntity, 0, sizeof( renderEntity ) );
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renderEntityHandle = -1;
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memset( smokes, 0, sizeof( smokes ) );
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freeSmokes = NULL;
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numActiveSmokes = 0;
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currentParticleTime = -1;
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}
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/*
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================
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idSmokeParticles::Init
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================
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*/
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void idSmokeParticles::Init( void ) {
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if ( initialized ) {
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Shutdown();
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}
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// set up the free list
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for ( int i = 0; i < MAX_SMOKE_PARTICLES-1; i++ ) {
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smokes[i].next = &smokes[i+1];
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}
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smokes[MAX_SMOKE_PARTICLES-1].next = NULL;
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freeSmokes = &smokes[0];
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numActiveSmokes = 0;
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activeStages.Clear();
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memset( &renderEntity, 0, sizeof( renderEntity ) );
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renderEntity.bounds.Clear();
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renderEntity.axis = mat3_identity;
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renderEntity.shaderParms[ SHADERPARM_RED ] = 1;
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renderEntity.shaderParms[ SHADERPARM_GREEN ] = 1;
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renderEntity.shaderParms[ SHADERPARM_BLUE ] = 1;
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renderEntity.shaderParms[3] = 1;
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renderEntity.hModel = renderModelManager->AllocModel();
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renderEntity.hModel->InitEmpty( smokeParticle_SnapshotName );
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// we certainly don't want particle shadows
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renderEntity.noShadow = 1;
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// huge bounds, so it will be present in every world area
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renderEntity.bounds.AddPoint( idVec3(-100000, -100000, -100000) );
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renderEntity.bounds.AddPoint( idVec3( 100000, 100000, 100000) );
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renderEntity.callback = idSmokeParticles::ModelCallback;
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// add to renderer list
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renderEntityHandle = gameRenderWorld->AddEntityDef( &renderEntity );
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currentParticleTime = -1;
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initialized = true;
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}
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/*
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================
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idSmokeParticles::Shutdown
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================
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*/
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void idSmokeParticles::Shutdown( void ) {
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// make sure the render entity is freed before the model is freed
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if ( renderEntityHandle != -1 ) {
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gameRenderWorld->FreeEntityDef( renderEntityHandle );
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renderEntityHandle = -1;
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}
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if ( renderEntity.hModel != NULL ) {
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renderModelManager->FreeModel( renderEntity.hModel );
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renderEntity.hModel = NULL;
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}
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initialized = false;
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}
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/*
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================
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idSmokeParticles::FreeSmokes
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================
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*/
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void idSmokeParticles::FreeSmokes( void ) {
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for ( int activeStageNum = 0; activeStageNum < activeStages.Num(); activeStageNum++ ) {
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singleSmoke_t *smoke, *next, *last;
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activeSmokeStage_t *active = &activeStages[activeStageNum];
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const idParticleStage *stage = active->stage;
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for ( last = NULL, smoke = active->smokes; smoke; smoke = next ) {
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next = smoke->next;
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float frac = (float)( gameLocal.time - smoke->privateStartTime ) / ( stage->particleLife * 1000 );
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if ( frac >= 1.0f ) {
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// remove the particle from the stage list
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if ( last != NULL ) {
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last->next = smoke->next;
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} else {
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active->smokes = smoke->next;
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}
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// put the particle on the free list
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smoke->next = freeSmokes;
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freeSmokes = smoke;
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numActiveSmokes--;
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continue;
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}
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last = smoke;
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}
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if ( !active->smokes ) {
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// remove this from the activeStages list
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activeStages.RemoveIndex( activeStageNum );
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activeStageNum--;
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}
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}
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}
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/*
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================
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idSmokeParticles::EmitSmoke
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Called by game code to drop another particle into the list
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================
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*/
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bool idSmokeParticles::EmitSmoke( const idDeclParticle *smoke, const int systemStartTime, const float diversity, const idVec3 &origin, const idMat3 &axis ) {
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bool continues = false;
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if ( !smoke ) {
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return false;
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}
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if ( !gameLocal.isNewFrame ) {
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return false;
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}
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// dedicated doesn't smoke. No UpdateRenderEntity, so they would not be freed
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if ( gameLocal.localClientNum < 0 ) {
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return false;
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}
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assert( gameLocal.time == 0 || systemStartTime <= gameLocal.time );
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if ( systemStartTime > gameLocal.time ) {
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return false;
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}
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idRandom steppingRandom( 0xffff * diversity );
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// for each stage in the smoke that is still emitting particles, emit a new singleSmoke_t
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for ( int stageNum = 0; stageNum < smoke->stages.Num(); stageNum++ ) {
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const idParticleStage *stage = smoke->stages[stageNum];
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if ( !stage->cycleMsec ) {
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continue;
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}
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if ( !stage->material ) {
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continue;
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}
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if ( stage->particleLife <= 0 ) {
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continue;
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}
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// see how many particles we should emit this tic
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// FIXME: smoke.privateStartTime += stage->timeOffset;
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int finalParticleTime = stage->cycleMsec * stage->spawnBunching;
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int deltaMsec = gameLocal.time - systemStartTime;
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int nowCount, prevCount;
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if ( finalParticleTime == 0 ) {
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// if spawnBunching is 0, they will all come out at once
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if ( gameLocal.time == systemStartTime ) {
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prevCount = -1;
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nowCount = stage->totalParticles-1;
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} else {
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prevCount = stage->totalParticles;
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}
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} else {
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nowCount = floor( ( (float)deltaMsec / finalParticleTime ) * stage->totalParticles );
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if ( nowCount >= stage->totalParticles ) {
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nowCount = stage->totalParticles-1;
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}
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prevCount = floor( ((float)( deltaMsec - USERCMD_MSEC ) / finalParticleTime) * stage->totalParticles );
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if ( prevCount < -1 ) {
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prevCount = -1;
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}
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}
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if ( prevCount >= stage->totalParticles ) {
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// no more particles from this stage
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continue;
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}
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if ( nowCount < stage->totalParticles-1 ) {
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// the system will need to emit particles next frame as well
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continues = true;
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}
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// find an activeSmokeStage that matches this
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activeSmokeStage_t *active = NULL;
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int i;
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for ( i = 0 ; i < activeStages.Num() ; i++ ) {
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active = &activeStages[i];
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if ( active->stage == stage ) {
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break;
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}
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}
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if ( i == activeStages.Num() ) {
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// add a new one
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activeSmokeStage_t newActive;
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newActive.smokes = NULL;
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newActive.stage = stage;
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i = activeStages.Append( newActive );
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active = &activeStages[i];
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}
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// add all the required particles
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for ( prevCount++ ; prevCount <= nowCount ; prevCount++ ) {
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if ( !freeSmokes ) {
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gameLocal.Printf( "idSmokeParticles::EmitSmoke: no free smokes with %d active stages\n", activeStages.Num() );
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return true;
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}
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singleSmoke_t *newSmoke = freeSmokes;
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freeSmokes = freeSmokes->next;
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numActiveSmokes++;
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newSmoke->index = prevCount;
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newSmoke->axis = axis;
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newSmoke->origin = origin;
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newSmoke->random = steppingRandom;
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newSmoke->privateStartTime = systemStartTime + prevCount * finalParticleTime / stage->totalParticles;
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newSmoke->next = active->smokes;
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active->smokes = newSmoke;
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steppingRandom.RandomInt(); // advance the random
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}
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}
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return continues;
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}
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/*
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================
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idSmokeParticles::UpdateRenderEntity
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================
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*/
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bool idSmokeParticles::UpdateRenderEntity( renderEntity_s *renderEntity, const renderView_t *renderView ) {
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// FIXME: re-use model surfaces
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renderEntity->hModel->InitEmpty( smokeParticle_SnapshotName );
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// this may be triggered by a model trace or other non-view related source,
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// to which we should look like an empty model
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if ( !renderView ) {
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return false;
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}
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// don't regenerate it if it is current
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if ( renderView->time == currentParticleTime && !renderView->forceUpdate ) {
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return false;
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}
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currentParticleTime = renderView->time;
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particleGen_t g;
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g.renderEnt = renderEntity;
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g.renderView = renderView;
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for ( int activeStageNum = 0; activeStageNum < activeStages.Num(); activeStageNum++ ) {
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singleSmoke_t *smoke, *next, *last;
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activeSmokeStage_t *active = &activeStages[activeStageNum];
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const idParticleStage *stage = active->stage;
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if ( !stage->material ) {
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continue;
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}
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// allocate a srfTriangles that can hold all the particles
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int count = 0;
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for ( smoke = active->smokes; smoke; smoke = smoke->next ) {
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count++;
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}
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int quads = count * stage->NumQuadsPerParticle();
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srfTriangles_t *tri = renderEntity->hModel->AllocSurfaceTriangles( quads * 4, quads * 6 );
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tri->numIndexes = quads * 6;
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tri->numVerts = quads * 4;
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// just always draw the particles
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tri->bounds[0][0] =
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tri->bounds[0][1] =
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tri->bounds[0][2] = -99999;
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tri->bounds[1][0] =
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tri->bounds[1][1] =
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tri->bounds[1][2] = 99999;
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tri->numVerts = 0;
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for ( last = NULL, smoke = active->smokes; smoke; smoke = next ) {
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next = smoke->next;
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g.frac = (float)( gameLocal.time - smoke->privateStartTime ) / ( stage->particleLife * 1000 );
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if ( g.frac >= 1.0f ) {
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// remove the particle from the stage list
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if ( last != NULL ) {
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last->next = smoke->next;
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} else {
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active->smokes = smoke->next;
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}
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// put the particle on the free list
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smoke->next = freeSmokes;
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freeSmokes = smoke;
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numActiveSmokes--;
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continue;
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}
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g.index = smoke->index;
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g.random = smoke->random;
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g.origin = smoke->origin;
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g.axis = smoke->axis;
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g.originalRandom = g.random;
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g.age = g.frac * stage->particleLife;
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tri->numVerts += stage->CreateParticle( &g, tri->verts + tri->numVerts );
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last = smoke;
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}
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if ( tri->numVerts > quads * 4 ) {
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gameLocal.Error( "idSmokeParticles::UpdateRenderEntity: miscounted verts" );
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}
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if ( tri->numVerts == 0 ) {
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// they were all removed
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renderEntity->hModel->FreeSurfaceTriangles( tri );
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if ( !active->smokes ) {
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// remove this from the activeStages list
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activeStages.RemoveIndex( activeStageNum );
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activeStageNum--;
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}
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} else {
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// build the index list
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int indexes = 0;
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for ( int i = 0 ; i < tri->numVerts ; i += 4 ) {
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tri->indexes[indexes+0] = i;
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tri->indexes[indexes+1] = i+2;
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tri->indexes[indexes+2] = i+3;
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tri->indexes[indexes+3] = i;
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tri->indexes[indexes+4] = i+3;
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tri->indexes[indexes+5] = i+1;
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indexes += 6;
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}
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tri->numIndexes = indexes;
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modelSurface_t surf;
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surf.geometry = tri;
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surf.shader = stage->material;
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surf.id = 0;
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renderEntity->hModel->AddSurface( surf );
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}
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}
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return true;
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}
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/*
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================
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idSmokeParticles::ModelCallback
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================
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*/
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bool idSmokeParticles::ModelCallback( renderEntity_s *renderEntity, const renderView_t *renderView ) {
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// update the particles
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if ( gameLocal.smokeParticles ) {
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return gameLocal.smokeParticles->UpdateRenderEntity( renderEntity, renderView );
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}
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return true;
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}
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