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Diffstat (limited to 'src/cgame/cg_particles.c')
| -rw-r--r-- | src/cgame/cg_particles.c | 2551 |
1 files changed, 0 insertions, 2551 deletions
diff --git a/src/cgame/cg_particles.c b/src/cgame/cg_particles.c deleted file mode 100644 index 64587360..00000000 --- a/src/cgame/cg_particles.c +++ /dev/null @@ -1,2551 +0,0 @@ -// cg_particles.c -- the particle system - -/* - * Portions Copyright (C) 2000-2001 Tim Angus - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the OSML - Open Source Modification License v1.0 as - * described in the file COPYING which is distributed with this source - * code. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - */ - -#include "cg_local.h" - -static baseParticleSystem_t baseParticleSystems[ MAX_BASEPARTICLE_SYSTEMS ]; -static baseParticleEjector_t baseParticleEjectors[ MAX_BASEPARTICLE_EJECTORS ]; -static baseParticle_t baseParticles[ MAX_BASEPARTICLES ]; -static int numBaseParticleSystems = 0; -static int numBaseParticleEjectors = 0; -static int numBaseParticles = 0; - -static particleSystem_t particleSystems[ MAX_PARTICLE_SYSTEMS ]; -static particleEjector_t particleEjectors[ MAX_PARTICLE_EJECTORS ]; -static particle_t particles[ MAX_PARTICLES ]; -static particle_t *sortedParticles[ MAX_PARTICLES ]; -static particle_t *radixBuffer[ MAX_PARTICLES ]; - -/* -=============== -CG_LerpValues - -Lerp between two values -=============== -*/ -static float CG_LerpValues( float a, float b, float f ) -{ - if( b == PARTICLES_SAME_AS_INITIAL ) - return a; - else - return ( (a) + (f) * ( (b) - (a) ) ); -} - -/* -=============== -CG_RandomiseValue - -Randomise some value by some variance -=============== -*/ -static float CG_RandomiseValue( float value, float variance ) -{ - if( value != 0.0f ) - return value * ( 1.0f + ( random( ) * variance ) ); - else - return random( ) * variance; -} - -/* -=============== -CG_SpreadVector - -Randomly spread a vector by some amount -=============== -*/ -static void CG_SpreadVector( vec3_t v, float spread ) -{ - vec3_t p, r1, r2; - float randomSpread = crandom( ) * spread; - float randomRotation = random( ) * 360.0f; - - PerpendicularVector( p, v ); - - RotatePointAroundVector( r1, p, v, randomSpread ); - RotatePointAroundVector( r2, v, r1, randomRotation ); - - VectorCopy( r2, v ); -} - -/* -=============== -CG_DestroyParticle - -Destroy an individual particle -=============== -*/ -static void CG_DestroyParticle( particle_t *p, vec3_t impactNormal ) -{ - //this particle has an onDeath particle system attached - if( p->class->onDeathSystemName[ 0 ] != '\0' ) - { - particleSystem_t *ps; - - ps = CG_SpawnNewParticleSystem( p->class->onDeathSystemHandle ); - - if( CG_IsParticleSystemValid( &ps ) ) - { - if( impactNormal ) - CG_SetParticleSystemNormal( ps, impactNormal ); - - CG_SetAttachmentPoint( &ps->attachment, p->origin ); - CG_AttachToPoint( &ps->attachment ); - } - } - - p->valid = qfalse; - - //this gives other systems a couple of - //frames to realise the particle is gone - p->frameWhenInvalidated = cg.clientFrame; -} - -/* -=============== -CG_SpawnNewParticle - -Introduce a new particle into the world -=============== -*/ -static particle_t *CG_SpawnNewParticle( baseParticle_t *bp, particleEjector_t *parent ) -{ - int i, j; - particle_t *p = NULL; - particleEjector_t *pe = parent; - particleSystem_t *ps = parent->parent; - vec3_t attachmentPoint, attachmentVelocity; - vec3_t transform[ 3 ]; - - for( i = 0; i < MAX_PARTICLES; i++ ) - { - p = &particles[ i ]; - - //FIXME: the + 1 may be unnecessary - if( !p->valid && cg.clientFrame > p->frameWhenInvalidated + 1 ) - { - memset( p, 0, sizeof( particle_t ) ); - - //found a free slot - p->class = bp; - p->parent = pe; - - p->birthTime = cg.time; - p->lifeTime = (int)CG_RandomiseValue( (float)bp->lifeTime, bp->lifeTimeRandFrac ); - - p->radius.delay = (int)CG_RandomiseValue( (float)bp->radius.delay, bp->radius.delayRandFrac ); - p->radius.initial = CG_RandomiseValue( bp->radius.initial, bp->radius.initialRandFrac ); - p->radius.final = CG_RandomiseValue( bp->radius.final, bp->radius.finalRandFrac ); - - p->alpha.delay = (int)CG_RandomiseValue( (float)bp->alpha.delay, bp->alpha.delayRandFrac ); - p->alpha.initial = CG_RandomiseValue( bp->alpha.initial, bp->alpha.initialRandFrac ); - p->alpha.final = CG_RandomiseValue( bp->alpha.final, bp->alpha.finalRandFrac ); - - p->rotation.delay = (int)CG_RandomiseValue( (float)bp->rotation.delay, bp->rotation.delayRandFrac ); - p->rotation.initial = CG_RandomiseValue( bp->rotation.initial, bp->rotation.initialRandFrac ); - p->rotation.final = CG_RandomiseValue( bp->rotation.final, bp->rotation.finalRandFrac ); - - p->dLightRadius.delay = - (int)CG_RandomiseValue( (float)bp->dLightRadius.delay, bp->dLightRadius.delayRandFrac ); - p->dLightRadius.initial = - CG_RandomiseValue( bp->dLightRadius.initial, bp->dLightRadius.initialRandFrac ); - p->dLightRadius.final = - CG_RandomiseValue( bp->dLightRadius.final, bp->dLightRadius.finalRandFrac ); - - p->colorDelay = CG_RandomiseValue( bp->colorDelay, bp->colorDelayRandFrac ); - - p->bounceMarkRadius = CG_RandomiseValue( bp->bounceMarkRadius, bp->bounceMarkRadiusRandFrac ); - p->bounceMarkCount = - round( CG_RandomiseValue( (float)bp->bounceMarkCount, bp->bounceMarkCountRandFrac ) ); - p->bounceSoundCount = - round( CG_RandomiseValue( (float)bp->bounceSoundCount, bp->bounceSoundCountRandFrac ) ); - - if( bp->numModels ) - { - p->model = bp->models[ rand( ) % bp->numModels ]; - - if( bp->modelAnimation.frameLerp < 0 ) - { - bp->modelAnimation.frameLerp = p->lifeTime / bp->modelAnimation.numFrames; - bp->modelAnimation.initialLerp = p->lifeTime / bp->modelAnimation.numFrames; - } - } - - if( !CG_AttachmentPoint( &ps->attachment, attachmentPoint ) ) - return NULL; - - VectorCopy( attachmentPoint, p->origin ); - - if( CG_AttachmentAxis( &ps->attachment, transform ) ) - { - vec3_t transDisplacement; - - VectorMatrixMultiply( bp->displacement, transform, transDisplacement ); - VectorAdd( p->origin, transDisplacement, p->origin ); - } - else - VectorAdd( p->origin, bp->displacement, p->origin ); - - for( j = 0; j <= 2; j++ ) - p->origin[ j ] += ( crandom( ) * bp->randDisplacement ); - - switch( bp->velMoveType ) - { - case PMT_STATIC: - if( bp->velMoveValues.dirType == PMD_POINT ) - VectorSubtract( bp->velMoveValues.point, p->origin, p->velocity ); - else if( bp->velMoveValues.dirType == PMD_LINEAR ) - VectorCopy( bp->velMoveValues.dir, p->velocity ); - break; - - case PMT_STATIC_TRANSFORM: - if( !CG_AttachmentAxis( &ps->attachment, transform ) ) - { - CG_Printf( S_COLOR_RED "ERROR: a particle with velocityType " - "static_transform is not attached to something which can " - "provide a transformation\n" ); - return NULL; - } - - if( bp->velMoveValues.dirType == PMD_POINT ) - { - vec3_t transPoint; - - VectorMatrixMultiply( bp->velMoveValues.point, transform, transPoint ); - VectorSubtract( transPoint, p->origin, p->velocity ); - } - else if( bp->velMoveValues.dirType == PMD_LINEAR ) - VectorMatrixMultiply( bp->velMoveValues.dir, transform, p->velocity ); - break; - - case PMT_TAG: - case PMT_CENT_ANGLES: - if( bp->velMoveValues.dirType == PMD_POINT ) - VectorSubtract( attachmentPoint, p->origin, p->velocity ); - else if( bp->velMoveValues.dirType == PMD_LINEAR ) - { - if( !CG_AttachmentDir( &ps->attachment, p->velocity ) ) - return NULL; - } - break; - - case PMT_NORMAL: - if( !ps->normalValid ) - { - CG_Printf( S_COLOR_RED "ERROR: a particle with velocityType " - "normal has no normal\n" ); - return NULL; - } - - VectorCopy( ps->normal, p->velocity ); - - //normal displacement - VectorNormalize( p->velocity ); - VectorMA( p->origin, bp->normalDisplacement, p->velocity, p->origin ); - break; - } - - VectorNormalize( p->velocity ); - CG_SpreadVector( p->velocity, bp->velMoveValues.dirRandAngle ); - VectorScale( p->velocity, - CG_RandomiseValue( bp->velMoveValues.mag, bp->velMoveValues.magRandFrac ), - p->velocity ); - - if( CG_AttachmentVelocity( &ps->attachment, attachmentVelocity ) ) - { - VectorMA( p->velocity, - CG_RandomiseValue( bp->velMoveValues.parentVelFrac, - bp->velMoveValues.parentVelFracRandFrac ), attachmentVelocity, p->velocity ); - } - - p->lastEvalTime = cg.time; - - p->valid = qtrue; - - //this particle has a child particle system attached - if( bp->childSystemName[ 0 ] != '\0' ) - { - particleSystem_t *ps = CG_SpawnNewParticleSystem( bp->childSystemHandle ); - - if( CG_IsParticleSystemValid( &ps ) ) - { - CG_SetAttachmentParticle( &ps->attachment, p ); - CG_AttachToParticle( &ps->attachment ); - } - } - - //this particle has a child trail system attached - if( bp->childTrailSystemName[ 0 ] != '\0' ) - { - trailSystem_t *ts = CG_SpawnNewTrailSystem( bp->childTrailSystemHandle ); - - if( CG_IsTrailSystemValid( &ts ) ) - { - CG_SetAttachmentParticle( &ts->frontAttachment, p ); - CG_AttachToParticle( &ts->frontAttachment ); - } - } - - break; - } - } - - return p; -} - - -/* -=============== -CG_SpawnNewParticles - -Check if there are any ejectors that should be -introducing new particles -=============== -*/ -static void CG_SpawnNewParticles( void ) -{ - int i, j; - particle_t *p; - particleSystem_t *ps; - particleEjector_t *pe; - baseParticleEjector_t *bpe; - float lerpFrac; - int count; - - for( i = 0; i < MAX_PARTICLE_EJECTORS; i++ ) - { - pe = &particleEjectors[ i ]; - ps = pe->parent; - - if( pe->valid ) - { - //a non attached particle system can't make particles - if( !CG_Attached( &ps->attachment ) ) - continue; - - bpe = particleEjectors[ i ].class; - - //if this system is scheduled for removal don't make any new particles - if( !ps->lazyRemove ) - { - while( pe->nextEjectionTime <= cg.time && - ( pe->count > 0 || pe->totalParticles == PARTICLES_INFINITE ) ) - { - for( j = 0; j < bpe->numParticles; j++ ) - CG_SpawnNewParticle( bpe->particles[ j ], pe ); - - if( pe->count > 0 ) - pe->count--; - - //calculate next ejection time - lerpFrac = 1.0 - ( (float)pe->count / (float)pe->totalParticles ); - pe->nextEjectionTime = cg.time + (int)CG_RandomiseValue( - CG_LerpValues( pe->ejectPeriod.initial, - pe->ejectPeriod.final, - lerpFrac ), - pe->ejectPeriod.randFrac ); - } - } - - if( pe->count == 0 || ps->lazyRemove ) - { - count = 0; - - //wait for child particles to die before declaring this pe invalid - for( j = 0; j < MAX_PARTICLES; j++ ) - { - p = &particles[ j ]; - - if( p->valid && p->parent == pe ) - count++; - } - - if( !count ) - pe->valid = qfalse; - } - } - } -} - - -/* -=============== -CG_SpawnNewParticleEjector - -Allocate a new particle ejector -=============== -*/ -static particleEjector_t *CG_SpawnNewParticleEjector( baseParticleEjector_t *bpe, - particleSystem_t *parent ) -{ - int i; - particleEjector_t *pe = NULL; - particleSystem_t *ps = parent; - - for( i = 0; i < MAX_PARTICLE_EJECTORS; i++ ) - { - pe = &particleEjectors[ i ]; - - if( !pe->valid ) - { - memset( pe, 0, sizeof( particleEjector_t ) ); - - //found a free slot - pe->class = bpe; - pe->parent = ps; - - pe->ejectPeriod.initial = bpe->eject.initial; - pe->ejectPeriod.final = bpe->eject.final; - pe->ejectPeriod.randFrac = bpe->eject.randFrac; - - pe->nextEjectionTime = cg.time + - (int)CG_RandomiseValue( (float)bpe->eject.delay, bpe->eject.delayRandFrac ); - pe->count = pe->totalParticles = - (int)round( CG_RandomiseValue( (float)bpe->totalParticles, bpe->totalParticlesRandFrac ) ); - - pe->valid = qtrue; - - if( cg_debugParticles.integer >= 1 ) - CG_Printf( "PE %s created\n", ps->class->name ); - - break; - } - } - - return pe; -} - - -/* -=============== -CG_SpawnNewParticleSystem - -Allocate a new particle system -=============== -*/ -particleSystem_t *CG_SpawnNewParticleSystem( qhandle_t psHandle ) -{ - int i, j; - particleSystem_t *ps = NULL; - baseParticleSystem_t *bps = &baseParticleSystems[ psHandle - 1 ]; - - if( !bps->registered ) - { - CG_Printf( S_COLOR_RED "ERROR: a particle system has not been registered yet\n" ); - return NULL; - } - - for( i = 0; i < MAX_PARTICLE_SYSTEMS; i++ ) - { - ps = &particleSystems[ i ]; - - if( !ps->valid ) - { - memset( ps, 0, sizeof( particleSystem_t ) ); - - //found a free slot - ps->class = bps; - - ps->valid = qtrue; - ps->lazyRemove = qfalse; - - for( j = 0; j < bps->numEjectors; j++ ) - CG_SpawnNewParticleEjector( bps->ejectors[ j ], ps ); - - if( cg_debugParticles.integer >= 1 ) - CG_Printf( "PS %s created\n", bps->name ); - - break; - } - } - - return ps; -} - -/* -=============== -CG_RegisterParticleSystem - -Load the shaders required for a particle system -=============== -*/ -qhandle_t CG_RegisterParticleSystem( char *name ) -{ - int i, j, k, l; - baseParticleSystem_t *bps; - baseParticleEjector_t *bpe; - baseParticle_t *bp; - - for( i = 0; i < MAX_BASEPARTICLE_SYSTEMS; i++ ) - { - bps = &baseParticleSystems[ i ]; - - if( !Q_stricmpn( bps->name, name, MAX_QPATH ) ) - { - //already registered - if( bps->registered ) - return i + 1; - - for( j = 0; j < bps->numEjectors; j++ ) - { - bpe = bps->ejectors[ j ]; - - for( l = 0; l < bpe->numParticles; l++ ) - { - bp = bpe->particles[ l ]; - - for( k = 0; k < bp->numFrames; k++ ) - bp->shaders[ k ] = trap_R_RegisterShader( bp->shaderNames[ k ] ); - - for( k = 0; k < bp->numModels; k++ ) - bp->models[ k ] = trap_R_RegisterModel( bp->modelNames[ k ] ); - - if( bp->bounceMarkName[ 0 ] != '\0' ) - bp->bounceMark = trap_R_RegisterShader( bp->bounceMarkName ); - - if( bp->bounceSoundName[ 0 ] != '\0' ) - bp->bounceSound = trap_S_RegisterSound( bp->bounceSoundName, qfalse ); - - //recursively register any children - if( bp->childSystemName[ 0 ] != '\0' ) - { - //don't care about a handle for children since - //the system deals with it - CG_RegisterParticleSystem( bp->childSystemName ); - } - - if( bp->onDeathSystemName[ 0 ] != '\0' ) - { - //don't care about a handle for children since - //the system deals with it - CG_RegisterParticleSystem( bp->onDeathSystemName ); - } - - if( bp->childTrailSystemName[ 0 ] != '\0' ) - bp->childTrailSystemHandle = CG_RegisterTrailSystem( bp->childTrailSystemName ); - } - } - - if( cg_debugParticles.integer >= 1 ) - CG_Printf( "Registered particle system %s\n", name ); - - bps->registered = qtrue; - - //avoid returning 0 - return i + 1; - } - } - - CG_Printf( S_COLOR_RED "ERROR: failed to register particle system %s\n", name ); - return 0; -} - - -/* -=============== -CG_ParseValueAndVariance - -Parse a value and its random variance -=============== -*/ -static void CG_ParseValueAndVariance( char *token, float *value, float *variance, qboolean allowNegative ) -{ - char valueBuffer[ 16 ]; - char varianceBuffer[ 16 ]; - char *variancePtr = NULL, *varEndPointer = NULL; - float localValue = 0.0f; - float localVariance = 0.0f; - - Q_strncpyz( valueBuffer, token, sizeof( valueBuffer ) ); - Q_strncpyz( varianceBuffer, token, sizeof( varianceBuffer ) ); - - variancePtr = strchr( valueBuffer, '~' ); - - //variance included - if( variancePtr ) - { - variancePtr[ 0 ] = '\0'; - variancePtr++; - - localValue = atof_neg( valueBuffer, allowNegative ); - - varEndPointer = strchr( variancePtr, '%' ); - - if( varEndPointer ) - { - varEndPointer[ 0 ] = '\0'; - localVariance = atof_neg( variancePtr, qfalse ) / 100.0f; - } - else - { - if( localValue != 0.0f ) - localVariance = atof_neg( variancePtr, qfalse ) / localValue; - else - localVariance = atof_neg( variancePtr, qfalse ); - } - } - else - localValue = atof_neg( valueBuffer, allowNegative ); - - if( value != NULL ) - *value = localValue; - - if( variance != NULL ) - *variance = localVariance; -} - -/* -=============== -CG_ParseColor -=============== -*/ -static qboolean CG_ParseColor( byte *c, char **text_p ) -{ - char *token; - int i; - - for( i = 0; i <= 2; i++ ) - { - token = COM_Parse( text_p ); - - if( !Q_stricmp( token, "" ) ) - return qfalse; - - c[ i ] = (int)( (float)0xFF * atof_neg( token, qfalse ) ); - } - - return qtrue; -} - -/* -=============== -CG_ParseParticle - -Parse a particle section -=============== -*/ -static qboolean CG_ParseParticle( baseParticle_t *bp, char **text_p ) -{ - char *token; - float number, randFrac; - int i; - - // read optional parameters - while( 1 ) - { - token = COM_Parse( text_p ); - - if( !token ) - break; - - if( !Q_stricmp( token, "" ) ) - return qfalse; - - if( !Q_stricmp( token, "bounce" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - if( !Q_stricmp( token, "cull" ) ) - { - bp->bounceCull = qtrue; - - bp->bounceFrac = -1.0f; - bp->bounceFracRandFrac = 0.0f; - } - else - { - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->bounceFrac = number; - bp->bounceFracRandFrac = randFrac; - } - - continue; - } - else if( !Q_stricmp( token, "bounceMark" ) ) - { - token = COM_Parse( text_p ); - if( !*token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->bounceMarkCount = number; - bp->bounceMarkCountRandFrac = randFrac; - - token = COM_Parse( text_p ); - if( !*token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->bounceMarkRadius = number; - bp->bounceMarkRadiusRandFrac = randFrac; - - token = COM_ParseExt( text_p, qfalse ); - if( !*token ) - break; - - Q_strncpyz( bp->bounceMarkName, token, MAX_QPATH ); - - continue; - } - else if( !Q_stricmp( token, "bounceSound" ) ) - { - token = COM_Parse( text_p ); - if( !*token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->bounceSoundCount = number; - bp->bounceSoundCountRandFrac = randFrac; - - token = COM_Parse( text_p ); - if( !*token ) - break; - - Q_strncpyz( bp->bounceSoundName, token, MAX_QPATH ); - - continue; - } - else if( !Q_stricmp( token, "shader" ) ) - { - if( bp->numModels > 0 ) - { - CG_Printf( S_COLOR_RED "ERROR: 'shader' not allowed in " - "conjunction with 'model'\n", token ); - break; - } - - token = COM_Parse( text_p ); - if( !token ) - break; - - if( !Q_stricmp( token, "sync" ) ) - bp->framerate = 0.0f; - else - bp->framerate = atof_neg( token, qfalse ); - - token = COM_ParseExt( text_p, qfalse ); - if( !*token ) - break; - - while( *token && bp->numFrames < MAX_PS_SHADER_FRAMES ) - { - Q_strncpyz( bp->shaderNames[ bp->numFrames++ ], token, MAX_QPATH ); - token = COM_ParseExt( text_p, qfalse ); - } - - continue; - } - else if( !Q_stricmp( token, "model" ) ) - { - if( bp->numFrames > 0 ) - { - CG_Printf( S_COLOR_RED "ERROR: 'model' not allowed in " - "conjunction with 'shader'\n", token ); - break; - } - - token = COM_ParseExt( text_p, qfalse ); - if( !*token ) - break; - - while( *token && bp->numModels < MAX_PS_MODELS ) - { - Q_strncpyz( bp->modelNames[ bp->numModels++ ], token, MAX_QPATH ); - token = COM_ParseExt( text_p, qfalse ); - } - - continue; - } - else if( !Q_stricmp( token, "modelAnimation" ) ) - { - token = COM_Parse( text_p ); - if( !*token ) - break; - - bp->modelAnimation.firstFrame = atoi_neg( token, qfalse ); - - token = COM_Parse( text_p ); - if( !*token ) - break; - - bp->modelAnimation.numFrames = atoi( token ); - bp->modelAnimation.reversed = qfalse; - bp->modelAnimation.flipflop = qfalse; - - // if numFrames is negative the animation is reversed - if( bp->modelAnimation.numFrames < 0 ) - { - bp->modelAnimation.numFrames = -bp->modelAnimation.numFrames; - bp->modelAnimation.reversed = qtrue; - } - - token = COM_Parse( text_p ); - if( !*token ) - break; - - bp->modelAnimation.loopFrames = atoi( token ); - - token = COM_Parse( text_p ); - if( !*token ) - break; - - if( !Q_stricmp( token, "sync" ) ) - { - bp->modelAnimation.frameLerp = -1; - bp->modelAnimation.initialLerp = -1; - } - else - { - float fps = atof_neg( token, qfalse ); - - if( fps == 0.0f ) - fps = 1.0f; - - bp->modelAnimation.frameLerp = 1000 / fps; - bp->modelAnimation.initialLerp = 1000 / fps; - } - - continue; - } - /// - else if( !Q_stricmp( token, "velocityType" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - if( !Q_stricmp( token, "static" ) ) - bp->velMoveType = PMT_STATIC; - else if( !Q_stricmp( token, "static_transform" ) ) - bp->velMoveType = PMT_STATIC_TRANSFORM; - else if( !Q_stricmp( token, "tag" ) ) - bp->velMoveType = PMT_TAG; - else if( !Q_stricmp( token, "cent" ) ) - bp->velMoveType = PMT_CENT_ANGLES; - else if( !Q_stricmp( token, "normal" ) ) - bp->velMoveType = PMT_NORMAL; - - continue; - } - else if( !Q_stricmp( token, "velocityDir" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - if( !Q_stricmp( token, "linear" ) ) - bp->velMoveValues.dirType = PMD_LINEAR; - else if( !Q_stricmp( token, "point" ) ) - bp->velMoveValues.dirType = PMD_POINT; - - continue; - } - else if( !Q_stricmp( token, "velocityMagnitude" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->velMoveValues.mag = number; - bp->velMoveValues.magRandFrac = randFrac; - - continue; - } - else if( !Q_stricmp( token, "parentVelocityFraction" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->velMoveValues.parentVelFrac = number; - bp->velMoveValues.parentVelFracRandFrac = randFrac; - - continue; - } - else if( !Q_stricmp( token, "velocity" ) ) - { - for( i = 0; i <= 2; i++ ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - bp->velMoveValues.dir[ i ] = atof_neg( token, qtrue ); - } - - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, NULL, &randFrac, qfalse ); - - bp->velMoveValues.dirRandAngle = randFrac; - - continue; - } - else if( !Q_stricmp( token, "velocityPoint" ) ) - { - for( i = 0; i <= 2; i++ ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - bp->velMoveValues.point[ i ] = atof_neg( token, qtrue ); - } - - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, NULL, &randFrac, qfalse ); - - bp->velMoveValues.pointRandAngle = randFrac; - - continue; - } - /// - else if( !Q_stricmp( token, "accelerationType" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - if( !Q_stricmp( token, "static" ) ) - bp->accMoveType = PMT_STATIC; - else if( !Q_stricmp( token, "static_transform" ) ) - bp->accMoveType = PMT_STATIC_TRANSFORM; - else if( !Q_stricmp( token, "tag" ) ) - bp->accMoveType = PMT_TAG; - else if( !Q_stricmp( token, "cent" ) ) - bp->accMoveType = PMT_CENT_ANGLES; - else if( !Q_stricmp( token, "normal" ) ) - bp->accMoveType = PMT_NORMAL; - - continue; - } - else if( !Q_stricmp( token, "accelerationDir" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - if( !Q_stricmp( token, "linear" ) ) - bp->accMoveValues.dirType = PMD_LINEAR; - else if( !Q_stricmp( token, "point" ) ) - bp->accMoveValues.dirType = PMD_POINT; - - continue; - } - else if( !Q_stricmp( token, "accelerationMagnitude" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->accMoveValues.mag = number; - bp->accMoveValues.magRandFrac = randFrac; - - continue; - } - else if( !Q_stricmp( token, "acceleration" ) ) - { - for( i = 0; i <= 2; i++ ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - bp->accMoveValues.dir[ i ] = atof_neg( token, qtrue ); - } - - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, NULL, &randFrac, qfalse ); - - bp->accMoveValues.dirRandAngle = randFrac; - - continue; - } - else if( !Q_stricmp( token, "accelerationPoint" ) ) - { - for( i = 0; i <= 2; i++ ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - bp->accMoveValues.point[ i ] = atof_neg( token, qtrue ); - } - - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, NULL, &randFrac, qfalse ); - - bp->accMoveValues.pointRandAngle = randFrac; - - continue; - } - /// - else if( !Q_stricmp( token, "displacement" ) ) - { - for( i = 0; i <= 2; i++ ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - bp->displacement[ i ] = atof_neg( token, qtrue ); - } - - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, NULL, &randFrac, qfalse ); - - bp->randDisplacement = randFrac; - - continue; - } - else if( !Q_stricmp( token, "normalDisplacement" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - bp->normalDisplacement = atof_neg( token, qtrue ); - - continue; - } - else if( !Q_stricmp( token, "overdrawProtection" ) ) - { - bp->overdrawProtection = qtrue; - - continue; - } - else if( !Q_stricmp( token, "realLight" ) ) - { - bp->realLight = qtrue; - - continue; - } - else if( !Q_stricmp( token, "dynamicLight" ) ) - { - bp->dynamicLight = qtrue; - - token = COM_Parse( text_p ); - if( !*token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->dLightRadius.delay = (int)number; - bp->dLightRadius.delayRandFrac = randFrac; - - token = COM_Parse( text_p ); - if( !*token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->dLightRadius.initial = number; - bp->dLightRadius.initialRandFrac = randFrac; - - token = COM_Parse( text_p ); - if( !*token ) - break; - - if( !Q_stricmp( token, "-" ) ) - { - bp->dLightRadius.final = PARTICLES_SAME_AS_INITIAL; - bp->dLightRadius.finalRandFrac = 0.0f; - } - else - { - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->dLightRadius.final = number; - bp->dLightRadius.finalRandFrac = randFrac; - } - - token = COM_Parse( text_p ); - if( !*token ) - break; - - if( !Q_stricmp( token, "{" ) ) - { - if( !CG_ParseColor( bp->dLightColor, text_p ) ) - break; - - token = COM_Parse( text_p ); - if( Q_stricmp( token, "}" ) ) - { - CG_Printf( S_COLOR_RED "ERROR: missing '}'\n" ); - break; - } - } - - continue; - } - else if( !Q_stricmp( token, "cullOnStartSolid" ) ) - { - bp->cullOnStartSolid = qtrue; - - continue; - } - else if( !Q_stricmp( token, "radius" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->radius.delay = (int)number; - bp->radius.delayRandFrac = randFrac; - - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->radius.initial = number; - bp->radius.initialRandFrac = randFrac; - - token = COM_Parse( text_p ); - if( !token ) - break; - - if( !Q_stricmp( token, "-" ) ) - { - bp->radius.final = PARTICLES_SAME_AS_INITIAL; - bp->radius.finalRandFrac = 0.0f; - } - else - { - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->radius.final = number; - bp->radius.finalRandFrac = randFrac; - } - - continue; - } - else if( !Q_stricmp( token, "alpha" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->alpha.delay = (int)number; - bp->alpha.delayRandFrac = randFrac; - - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->alpha.initial = number; - bp->alpha.initialRandFrac = randFrac; - - token = COM_Parse( text_p ); - if( !token ) - break; - - if( !Q_stricmp( token, "-" ) ) - { - bp->alpha.final = PARTICLES_SAME_AS_INITIAL; - bp->alpha.finalRandFrac = 0.0f; - } - else - { - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->alpha.final = number; - bp->alpha.finalRandFrac = randFrac; - } - - continue; - } - else if( !Q_stricmp( token, "color" ) ) - { - token = COM_Parse( text_p ); - if( !*token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->colorDelay = (int)number; - bp->colorDelayRandFrac = randFrac; - - token = COM_Parse( text_p ); - if( !*token ) - break; - - if( !Q_stricmp( token, "{" ) ) - { - if( !CG_ParseColor( bp->initialColor, text_p ) ) - break; - - token = COM_Parse( text_p ); - if( Q_stricmp( token, "}" ) ) - { - CG_Printf( S_COLOR_RED "ERROR: missing '}'\n" ); - break; - } - - token = COM_Parse( text_p ); - if( !*token ) - break; - - if( !Q_stricmp( token, "-" ) ) - { - bp->finalColor[ 0 ] = bp->initialColor[ 0 ]; - bp->finalColor[ 1 ] = bp->initialColor[ 1 ]; - bp->finalColor[ 2 ] = bp->initialColor[ 2 ]; - } - else if( !Q_stricmp( token, "{" ) ) - { - if( !CG_ParseColor( bp->finalColor, text_p ) ) - break; - - token = COM_Parse( text_p ); - if( Q_stricmp( token, "}" ) ) - { - CG_Printf( S_COLOR_RED "ERROR: missing '}'\n" ); - break; - } - } - else - { - CG_Printf( S_COLOR_RED "ERROR: missing '{'\n" ); - break; - } - } - else - { - CG_Printf( S_COLOR_RED "ERROR: missing '{'\n" ); - break; - } - - continue; - } - else if( !Q_stricmp( token, "rotation" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->rotation.delay = (int)number; - bp->rotation.delayRandFrac = randFrac; - - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qtrue ); - - bp->rotation.initial = number; - bp->rotation.initialRandFrac = randFrac; - - token = COM_Parse( text_p ); - if( !token ) - break; - - if( !Q_stricmp( token, "-" ) ) - { - bp->rotation.final = PARTICLES_SAME_AS_INITIAL; - bp->rotation.finalRandFrac = 0.0f; - } - else - { - CG_ParseValueAndVariance( token, &number, &randFrac, qtrue ); - - bp->rotation.final = number; - bp->rotation.finalRandFrac = randFrac; - } - - continue; - } - else if( !Q_stricmp( token, "lifeTime" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bp->lifeTime = (int)number; - bp->lifeTimeRandFrac = randFrac; - - continue; - } - else if( !Q_stricmp( token, "childSystem" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - Q_strncpyz( bp->childSystemName, token, MAX_QPATH ); - - continue; - } - else if( !Q_stricmp( token, "onDeathSystem" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - Q_strncpyz( bp->onDeathSystemName, token, MAX_QPATH ); - - continue; - } - else if( !Q_stricmp( token, "childTrailSystem" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - Q_strncpyz( bp->childTrailSystemName, token, MAX_QPATH ); - - continue; - } - else if( !Q_stricmp( token, "}" ) ) - return qtrue; //reached the end of this particle - else - { - CG_Printf( S_COLOR_RED "ERROR: unknown token '%s' in particle\n", token ); - return qfalse; - } - } - - return qfalse; -} - -/* -=============== -CG_InitialiseBaseParticle -=============== -*/ -static void CG_InitialiseBaseParticle( baseParticle_t *bp ) -{ - memset( bp, 0, sizeof( baseParticle_t ) ); - - memset( bp->initialColor, 0xFF, sizeof( bp->initialColor ) ); - memset( bp->finalColor, 0xFF, sizeof( bp->finalColor ) ); -} - -/* -=============== -CG_ParseParticleEjector - -Parse a particle ejector section -=============== -*/ -static qboolean CG_ParseParticleEjector( baseParticleEjector_t *bpe, char **text_p ) -{ - char *token; - float number, randFrac; - - // read optional parameters - while( 1 ) - { - token = COM_Parse( text_p ); - - if( !token ) - break; - - if( !Q_stricmp( token, "" ) ) - return qfalse; - - if( !Q_stricmp( token, "{" ) ) - { - CG_InitialiseBaseParticle( &baseParticles[ numBaseParticles ] ); - - if( !CG_ParseParticle( &baseParticles[ numBaseParticles ], text_p ) ) - { - CG_Printf( S_COLOR_RED "ERROR: failed to parse particle\n" ); - return qfalse; - } - - if( bpe->numParticles == MAX_PARTICLES_PER_EJECTOR ) - { - CG_Printf( S_COLOR_RED "ERROR: ejector has > %d particles\n", MAX_PARTICLES_PER_EJECTOR ); - return qfalse; - } - else if( numBaseParticles == MAX_BASEPARTICLES ) - { - CG_Printf( S_COLOR_RED "ERROR: maximum number of particles (%d) reached\n", MAX_BASEPARTICLES ); - return qfalse; - } - else - { - //start parsing particles again - bpe->particles[ bpe->numParticles ] = &baseParticles[ numBaseParticles ]; - bpe->numParticles++; - numBaseParticles++; - } - continue; - } - else if( !Q_stricmp( token, "delay" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bpe->eject.delay = (int)number; - bpe->eject.delayRandFrac = randFrac; - - continue; - } - else if( !Q_stricmp( token, "period" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - bpe->eject.initial = atoi_neg( token, qfalse ); - - token = COM_Parse( text_p ); - if( !token ) - break; - - if( !Q_stricmp( token, "-" ) ) - bpe->eject.final = PARTICLES_SAME_AS_INITIAL; - else - bpe->eject.final = atoi_neg( token, qfalse ); - - token = COM_Parse( text_p ); - if( !token ) - break; - - CG_ParseValueAndVariance( token, NULL, &bpe->eject.randFrac, qfalse ); - - continue; - } - else if( !Q_stricmp( token, "count" ) ) - { - token = COM_Parse( text_p ); - if( !token ) - break; - - if( !Q_stricmp( token, "infinite" ) ) - { - bpe->totalParticles = PARTICLES_INFINITE; - bpe->totalParticlesRandFrac = 0.0f; - } - else - { - CG_ParseValueAndVariance( token, &number, &randFrac, qfalse ); - - bpe->totalParticles = (int)number; - bpe->totalParticlesRandFrac = randFrac; - } - - continue; - } - else if( !Q_stricmp( token, "particle" ) ) //acceptable text - continue; - else if( !Q_stricmp( token, "}" ) ) - return qtrue; //reached the end of this particle ejector - else - { - CG_Printf( S_COLOR_RED "ERROR: unknown token '%s' in particle ejector\n", token ); - return qfalse; - } - } - - return qfalse; -} - - -/* -=============== -CG_ParseParticleSystem - -Parse a particle system section -=============== -*/ -static qboolean CG_ParseParticleSystem( baseParticleSystem_t *bps, char **text_p, const char *name ) -{ - char *token; - baseParticleEjector_t *bpe; - - // read optional parameters - while( 1 ) - { - token = COM_Parse( text_p ); - - if( !token ) - break; - - if( !Q_stricmp( token, "" ) ) - return qfalse; - - if( !Q_stricmp( token, "{" ) ) - { - if( !CG_ParseParticleEjector( &baseParticleEjectors[ numBaseParticleEjectors ], text_p ) ) - { - CG_Printf( S_COLOR_RED "ERROR: failed to parse particle ejector\n" ); - return qfalse; - } - - bpe = &baseParticleEjectors[ numBaseParticleEjectors ]; - - //check for infinite count + zero period - if( bpe->totalParticles == PARTICLES_INFINITE && - ( bpe->eject.initial == 0.0f || bpe->eject.final == 0.0f ) ) - { - CG_Printf( S_COLOR_RED "ERROR: ejector with 'count infinite' potentially has zero period\n" ); - return qfalse; - } - - if( bps->numEjectors == MAX_EJECTORS_PER_SYSTEM ) - { - CG_Printf( S_COLOR_RED "ERROR: particle system has > %d ejectors\n", MAX_EJECTORS_PER_SYSTEM ); - return qfalse; - } - else if( numBaseParticleEjectors == MAX_BASEPARTICLE_EJECTORS ) - { - CG_Printf( S_COLOR_RED "ERROR: maximum number of particle ejectors (%d) reached\n", - MAX_BASEPARTICLE_EJECTORS ); - return qfalse; - } - else - { - //start parsing ejectors again - bps->ejectors[ bps->numEjectors ] = &baseParticleEjectors[ numBaseParticleEjectors ]; - bps->numEjectors++; - numBaseParticleEjectors++; - } - continue; - } - else if( !Q_stricmp( token, "thirdPersonOnly" ) ) - bps->thirdPersonOnly = qtrue; - else if( !Q_stricmp( token, "ejector" ) ) //acceptable text - continue; - else if( !Q_stricmp( token, "}" ) ) - { - if( cg_debugParticles.integer >= 1 ) - CG_Printf( "Parsed particle system %s\n", name ); - - return qtrue; //reached the end of this particle system - } - else - { - CG_Printf( S_COLOR_RED "ERROR: unknown token '%s' in particle system %s\n", token, bps->name ); - return qfalse; - } - } - - return qfalse; -} - -/* -=============== -CG_ParseParticleFile - -Load the particle systems from a particle file -=============== -*/ -static qboolean CG_ParseParticleFile( const char *fileName ) -{ - char *text_p; - int i; - int len; - char *token; - char text[ 32000 ]; - char psName[ MAX_QPATH ]; - qboolean psNameSet = qfalse; - fileHandle_t f; - - // load the file - len = trap_FS_FOpenFile( fileName, &f, FS_READ ); - if( len <= 0 ) - return qfalse; - - if( len >= sizeof( text ) - 1 ) - { - CG_Printf( S_COLOR_RED "ERROR: particle file %s too long\n", fileName ); - return qfalse; - } - - trap_FS_Read( text, len, f ); - text[ len ] = 0; - trap_FS_FCloseFile( f ); - - // parse the text - text_p = text; - - // read optional parameters - while( 1 ) - { - token = COM_Parse( &text_p ); - - if( !Q_stricmp( token, "" ) ) - break; - - if( !Q_stricmp( token, "{" ) ) - { - if( psNameSet ) - { - //check for name space clashes - for( i = 0; i < numBaseParticleSystems; i++ ) - { - if( !Q_stricmp( baseParticleSystems[ i ].name, psName ) ) - { - CG_Printf( S_COLOR_RED "ERROR: a particle system is already named %s\n", psName ); - return qfalse; - } - } - - Q_strncpyz( baseParticleSystems[ numBaseParticleSystems ].name, psName, MAX_QPATH ); - - if( !CG_ParseParticleSystem( &baseParticleSystems[ numBaseParticleSystems ], &text_p, psName ) ) - { - CG_Printf( S_COLOR_RED "ERROR: %s: failed to parse particle system %s\n", fileName, psName ); - return qfalse; - } - - //start parsing particle systems again - psNameSet = qfalse; - - if( numBaseParticleSystems == MAX_BASEPARTICLE_SYSTEMS ) - { - CG_Printf( S_COLOR_RED "ERROR: maximum number of particle systems (%d) reached\n", - MAX_BASEPARTICLE_SYSTEMS ); - return qfalse; - } - else - numBaseParticleSystems++; - - continue; - } - else - { - CG_Printf( S_COLOR_RED "ERROR: unamed particle system\n" ); - return qfalse; - } - } - - if( !psNameSet ) - { - Q_strncpyz( psName, token, sizeof( psName ) ); - psNameSet = qtrue; - } - else - { - CG_Printf( S_COLOR_RED "ERROR: particle system already named\n" ); - return qfalse; - } - } - - return qtrue; -} - - -/* -=============== -CG_LoadParticleSystems - -Load particle systems from .particle files -=============== -*/ -void CG_LoadParticleSystems( void ) -{ - int i, j; - const char *s[ MAX_PARTICLE_FILES ]; - - //clear out the old - numBaseParticleSystems = 0; - numBaseParticleEjectors = 0; - numBaseParticles = 0; - - for( i = 0; i < MAX_BASEPARTICLE_SYSTEMS; i++ ) - { - baseParticleSystem_t *bps = &baseParticleSystems[ i ]; - memset( bps, 0, sizeof( baseParticleSystem_t ) ); - } - - for( i = 0; i < MAX_BASEPARTICLE_EJECTORS; i++ ) - { - baseParticleEjector_t *bpe = &baseParticleEjectors[ i ]; - memset( bpe, 0, sizeof( baseParticleEjector_t ) ); - } - - for( i = 0; i < MAX_BASEPARTICLES; i++ ) - { - baseParticle_t *bp = &baseParticles[ i ]; - memset( bp, 0, sizeof( baseParticle_t ) ); - } - - - //and bring in the new - for( i = 0; i < MAX_PARTICLE_FILES; i++ ) - { - s[ i ] = CG_ConfigString( CS_PARTICLE_FILES + i ); - - if( strlen( s[ i ] ) > 0 ) - { - CG_Printf( "...loading '%s'\n", s[ i ] ); - CG_ParseParticleFile( s[ i ] ); - } - else - break; - } - - //connect any child systems to their psHandle - for( i = 0; i < numBaseParticles; i++ ) - { - baseParticle_t *bp = &baseParticles[ i ]; - - if( bp->childSystemName[ 0 ] ) - { - //particle class has a child, resolve the name - for( j = 0; j < numBaseParticleSystems; j++ ) - { - baseParticleSystem_t *bps = &baseParticleSystems[ j ]; - - if( !Q_stricmp( bps->name, bp->childSystemName ) ) - { - //FIXME: add checks for cycles and infinite children - - bp->childSystemHandle = j + 1; - - break; - } - } - - if( j == numBaseParticleSystems ) - { - //couldn't find named particle system - CG_Printf( S_COLOR_YELLOW "WARNING: failed to find child %s\n", bp->childSystemName ); - bp->childSystemName[ 0 ] = '\0'; - } - } - - if( bp->onDeathSystemName[ 0 ] ) - { - //particle class has a child, resolve the name - for( j = 0; j < numBaseParticleSystems; j++ ) - { - baseParticleSystem_t *bps = &baseParticleSystems[ j ]; - - if( !Q_stricmp( bps->name, bp->onDeathSystemName ) ) - { - //FIXME: add checks for cycles and infinite children - - bp->onDeathSystemHandle = j + 1; - - break; - } - } - - if( j == numBaseParticleSystems ) - { - //couldn't find named particle system - CG_Printf( S_COLOR_YELLOW "WARNING: failed to find onDeath system %s\n", bp->onDeathSystemName ); - bp->onDeathSystemName[ 0 ] = '\0'; - } - } - } -} - -/* -=============== -CG_SetParticleSystemNormal -=============== -*/ -void CG_SetParticleSystemNormal( particleSystem_t *ps, vec3_t normal ) -{ - if( ps == NULL || !ps->valid ) - { - CG_Printf( S_COLOR_YELLOW "WARNING: tried to modify a NULL particle system\n" ); - return; - } - - ps->normalValid = qtrue; - VectorCopy( normal, ps->normal ); - VectorNormalize( ps->normal ); -} - - -/* -=============== -CG_DestroyParticleSystem - -Destroy a particle system - -This doesn't actually invalidate anything, it just stops -particle ejectors from producing new particles so the -garbage collector will eventually remove this system. -However is does set the pointer to NULL so the user is -unable to manipulate this particle system any longer. -=============== -*/ -void CG_DestroyParticleSystem( particleSystem_t **ps ) -{ - int i; - particleEjector_t *pe; - - if( *ps == NULL || !(*ps)->valid ) - { - CG_Printf( S_COLOR_YELLOW "WARNING: tried to destroy a NULL particle system\n" ); - return; - } - - if( cg_debugParticles.integer >= 1 ) - CG_Printf( "PS destroyed\n" ); - - for( i = 0; i < MAX_PARTICLE_EJECTORS; i++ ) - { - pe = &particleEjectors[ i ]; - - if( pe->valid && pe->parent == *ps ) - pe->totalParticles = pe->count = 0; - } - - *ps = NULL; -} - -/* -=============== -CG_IsParticleSystemInfinite - -Test a particle system for 'count infinite' ejectors -=============== -*/ -qboolean CG_IsParticleSystemInfinite( particleSystem_t *ps ) -{ - int i; - particleEjector_t *pe; - - if( ps == NULL ) - { - CG_Printf( S_COLOR_YELLOW "WARNING: tried to test a NULL particle system\n" ); - return qfalse; - } - - if( !ps->valid ) - { - CG_Printf( S_COLOR_YELLOW "WARNING: tried to test an invalid particle system\n" ); - return qfalse; - } - - //don't bother checking already invalid systems - if( !ps->valid ) - return qfalse; - - for( i = 0; i < MAX_PARTICLE_EJECTORS; i++ ) - { - pe = &particleEjectors[ i ]; - - if( pe->valid && pe->parent == ps ) - { - if( pe->totalParticles == PARTICLES_INFINITE ) - return qtrue; - } - } - - return qfalse; -} - -/* -=============== -CG_IsParticleSystemValid - -Test a particle system for validity -=============== -*/ -qboolean CG_IsParticleSystemValid( particleSystem_t **ps ) -{ - if( *ps == NULL || ( *ps && !(*ps)->valid ) ) - { - if( *ps && !(*ps)->valid ) - *ps = NULL; - - return qfalse; - } - - return qtrue; -} - -/* -=============== -CG_GarbageCollectParticleSystems - -Destroy inactive particle systems -=============== -*/ -static void CG_GarbageCollectParticleSystems( void ) -{ - int i, j, count; - particleSystem_t *ps; - particleEjector_t *pe; - int centNum; - - for( i = 0; i < MAX_PARTICLE_SYSTEMS; i++ ) - { - ps = &particleSystems[ i ]; - count = 0; - - //don't bother checking already invalid systems - if( !ps->valid ) - continue; - - for( j = 0; j < MAX_PARTICLE_EJECTORS; j++ ) - { - pe = &particleEjectors[ j ]; - - if( pe->valid && pe->parent == ps ) - count++; - } - - if( !count ) - ps->valid = qfalse; - - //check systems where the parent cent has left the PVS - //( local player entity is always valid ) - if( ( centNum = CG_AttachmentCentNum( &ps->attachment ) ) >= 0 && - centNum != cg.snap->ps.clientNum ) - { - if( !cg_entities[ centNum ].valid ) - ps->lazyRemove = qtrue; - } - - if( cg_debugParticles.integer >= 1 && !ps->valid ) - CG_Printf( "PS %s garbage collected\n", ps->class->name ); - } -} - - -/* -=============== -CG_CalculateTimeFrac - -Calculate the fraction of time passed -=============== -*/ -static float CG_CalculateTimeFrac( int birth, int life, int delay ) -{ - float frac; - - frac = ( (float)cg.time - (float)( birth + delay ) ) / (float)( life - delay ); - - if( frac < 0.0f ) - frac = 0.0f; - else if( frac > 1.0f ) - frac = 1.0f; - - return frac; -} - -/* -=============== -CG_EvaluateParticlePhysics - -Compute the physics on a specific particle -=============== -*/ -static void CG_EvaluateParticlePhysics( particle_t *p ) -{ - particleSystem_t *ps = p->parent->parent; - baseParticle_t *bp = p->class; - vec3_t acceleration, newOrigin; - vec3_t mins, maxs; - float deltaTime, bounce, radius, dot; - trace_t trace; - vec3_t transform[ 3 ]; - - if( p->atRest ) - { - VectorClear( p->velocity ); - return; - } - - switch( bp->accMoveType ) - { - case PMT_STATIC: - if( bp->accMoveValues.dirType == PMD_POINT ) - VectorSubtract( bp->accMoveValues.point, p->origin, acceleration ); - else if( bp->accMoveValues.dirType == PMD_LINEAR ) - VectorCopy( bp->accMoveValues.dir, acceleration ); - - break; - - case PMT_STATIC_TRANSFORM: - if( !CG_AttachmentAxis( &ps->attachment, transform ) ) - { - CG_Printf( S_COLOR_RED "ERROR: a particle with accelerationType " - "static_transform is not attached to something which can " - "provide a transformation\n" ); - return; - } - - if( bp->accMoveValues.dirType == PMD_POINT ) - { - vec3_t transPoint; - - VectorMatrixMultiply( bp->accMoveValues.point, transform, transPoint ); - VectorSubtract( transPoint, p->origin, acceleration ); - } - else if( bp->accMoveValues.dirType == PMD_LINEAR ) - VectorMatrixMultiply( bp->accMoveValues.dir, transform, acceleration ); - break; - - case PMT_TAG: - case PMT_CENT_ANGLES: - if( bp->accMoveValues.dirType == PMD_POINT ) - { - vec3_t point; - - if( !CG_AttachmentPoint( &ps->attachment, point ) ) - return; - - VectorSubtract( point, p->origin, acceleration ); - } - else if( bp->accMoveValues.dirType == PMD_LINEAR ) - { - if( !CG_AttachmentDir( &ps->attachment, acceleration ) ) - return; - } - break; - - case PMT_NORMAL: - if( !ps->normalValid ) - return; - - VectorCopy( ps->normal, acceleration ); - - break; - } - -#define MAX_ACC_RADIUS 1000.0f - - if( bp->accMoveValues.dirType == PMD_POINT ) - { - //FIXME: so this fall off is a bit... odd -- it works.. - float r2 = DotProduct( acceleration, acceleration ); // = radius^2 - float scale = ( MAX_ACC_RADIUS - r2 ) / MAX_ACC_RADIUS; - - if( scale > 1.0f ) - scale = 1.0f; - else if( scale < 0.1f ) - scale = 0.1f; - - scale *= CG_RandomiseValue( bp->accMoveValues.mag, bp->accMoveValues.magRandFrac ); - - VectorNormalize( acceleration ); - CG_SpreadVector( acceleration, bp->accMoveValues.dirRandAngle ); - VectorScale( acceleration, scale, acceleration ); - } - else if( bp->accMoveValues.dirType == PMD_LINEAR ) - { - VectorNormalize( acceleration ); - CG_SpreadVector( acceleration, bp->accMoveValues.dirRandAngle ); - VectorScale( acceleration, - CG_RandomiseValue( bp->accMoveValues.mag, bp->accMoveValues.magRandFrac ), - acceleration ); - } - - radius = CG_LerpValues( p->radius.initial, - p->radius.final, - CG_CalculateTimeFrac( p->birthTime, - p->lifeTime, - p->radius.delay ) ); - - VectorSet( mins, -radius, -radius, -radius ); - VectorSet( maxs, radius, radius, radius ); - - bounce = CG_RandomiseValue( bp->bounceFrac, bp->bounceFracRandFrac ); - - deltaTime = (float)( cg.time - p->lastEvalTime ) * 0.001; - VectorMA( p->velocity, deltaTime, acceleration, p->velocity ); - VectorMA( p->origin, deltaTime, p->velocity, newOrigin ); - p->lastEvalTime = cg.time; - - CG_Trace( &trace, p->origin, mins, maxs, newOrigin, - CG_AttachmentCentNum( &ps->attachment ), CONTENTS_SOLID ); - - //not hit anything or not a collider - if( trace.fraction == 1.0f || bounce == 0.0f ) - { - VectorCopy( newOrigin, p->origin ); - return; - } - - //remove particles that get into a CONTENTS_NODROP brush - if( ( trap_CM_PointContents( trace.endpos, 0 ) & CONTENTS_NODROP ) || - ( bp->cullOnStartSolid && trace.startsolid ) ) - { - CG_DestroyParticle( p, NULL ); - return; - } - else if( bp->bounceCull ) - { - CG_DestroyParticle( p, trace.plane.normal ); - return; - } - - //reflect the velocity on the trace plane - dot = DotProduct( p->velocity, trace.plane.normal ); - VectorMA( p->velocity, -2.0f * dot, trace.plane.normal, p->velocity ); - - VectorScale( p->velocity, bounce, p->velocity ); - - if( trace.plane.normal[ 2 ] > 0.5f && - ( p->velocity[ 2 ] < 40.0f || - p->velocity[ 2 ] < -cg.frametime * p->velocity[ 2 ] ) ) - p->atRest = qtrue; - - if( bp->bounceMarkName[ 0 ] && p->bounceMarkCount > 0 ) - { - CG_ImpactMark( bp->bounceMark, trace.endpos, trace.plane.normal, - random( ) * 360, 1, 1, 1, 1, qtrue, bp->bounceMarkRadius, qfalse ); - p->bounceMarkCount--; - } - - if( bp->bounceSoundName[ 0 ] && p->bounceSoundCount > 0 ) - { - trap_S_StartSound( trace.endpos, ENTITYNUM_WORLD, CHAN_AUTO, bp->bounceSound ); - p->bounceSoundCount--; - } - - VectorCopy( trace.endpos, p->origin ); -} - - -#define GETKEY(x,y) (((x)>>y)&0xFF) - -/* -=============== -CG_Radix -=============== -*/ -static void CG_Radix( int bits, int size, particle_t **source, particle_t **dest ) -{ - int count[ 256 ]; - int index[ 256 ]; - int i; - - memset( count, 0, sizeof( count ) ); - - for( i = 0; i < size; i++ ) - count[ GETKEY( source[ i ]->sortKey, bits ) ]++; - - index[ 0 ] = 0; - - for( i = 1; i < 256; i++ ) - index[ i ] = index[ i - 1 ] + count[ i - 1 ]; - - for( i = 0; i < size; i++ ) - dest[ index[ GETKEY( source[ i ]->sortKey, bits ) ]++ ] = source[ i ]; -} - -/* -=============== -CG_RadixSort - -Radix sort with 4 byte size buckets -=============== -*/ -static void CG_RadixSort( particle_t **source, particle_t **temp, int size ) -{ - CG_Radix( 0, size, source, temp ); - CG_Radix( 8, size, temp, source ); - CG_Radix( 16, size, source, temp ); - CG_Radix( 24, size, temp, source ); -} - -/* -=============== -CG_CompactAndSortParticles - -Depth sort the particles -=============== -*/ -static void CG_CompactAndSortParticles( void ) -{ - int i, j = 0; - int numParticles; - vec3_t delta; - - for( i = 0; i < MAX_PARTICLES; i++ ) - sortedParticles[ i ] = &particles[ i ]; - - for( i = MAX_PARTICLES - 1; i >= 0; i-- ) - { - if( sortedParticles[ i ]->valid ) - { - //find the first hole - while( sortedParticles[ j ]->valid ) - j++; - - //no more holes - if( j >= i ) - break; - - sortedParticles[ j ] = sortedParticles[ i ]; - } - } - - numParticles = i; - - //set sort keys - for( i = 0; i < numParticles; i++ ) - { - VectorSubtract( sortedParticles[ i ]->origin, cg.refdef.vieworg, delta ); - sortedParticles[ i ]->sortKey = (int)DotProduct( delta, delta ); - } - - CG_RadixSort( sortedParticles, radixBuffer, numParticles ); - - //FIXME: wtf? - //reverse order of particles array - for( i = 0; i < numParticles; i++ ) - radixBuffer[ i ] = sortedParticles[ numParticles - i - 1 ]; - - for( i = 0; i < numParticles; i++ ) - sortedParticles[ i ] = radixBuffer[ i ]; -} - -/* -=============== -CG_RenderParticle - -Actually render a particle -=============== -*/ -static void CG_RenderParticle( particle_t *p ) -{ - refEntity_t re; - float timeFrac, scale; - int index; - baseParticle_t *bp = p->class; - particleSystem_t *ps = p->parent->parent; - baseParticleSystem_t *bps = ps->class; - vec3_t alight, dlight, lightdir; - int i; - vec3_t up = { 0.0f, 0.0f, 1.0f }; - - memset( &re, 0, sizeof( refEntity_t ) ); - - timeFrac = CG_CalculateTimeFrac( p->birthTime, p->lifeTime, 0 ); - - scale = CG_LerpValues( p->radius.initial, - p->radius.final, - CG_CalculateTimeFrac( p->birthTime, - p->lifeTime, - p->radius.delay ) ); - - re.shaderTime = p->birthTime / 1000.0f; - - if( bp->numFrames ) //shader based - { - re.reType = RT_SPRITE; - - //apply environmental lighting to the particle - if( bp->realLight ) - { - trap_R_LightForPoint( p->origin, alight, dlight, lightdir ); - for( i = 0; i <= 2; i++ ) - re.shaderRGBA[ i ] = (byte)alight[ i ]; - } - else - { - vec3_t colorRange; - - VectorSubtract( bp->finalColor, - bp->initialColor, colorRange ); - - VectorMA( bp->initialColor, - CG_CalculateTimeFrac( p->birthTime, - p->lifeTime, - p->colorDelay ), - colorRange, re.shaderRGBA ); - } - - re.shaderRGBA[ 3 ] = (byte)( (float)0xFF * - CG_LerpValues( p->alpha.initial, - p->alpha.final, - CG_CalculateTimeFrac( p->birthTime, - p->lifeTime, - p->alpha.delay ) ) ); - - re.radius = scale; - - re.rotation = CG_LerpValues( p->rotation.initial, - p->rotation.final, - CG_CalculateTimeFrac( p->birthTime, - p->lifeTime, - p->rotation.delay ) ); - - // if the view would be "inside" the sprite, kill the sprite - // so it doesn't add too much overdraw - if( Distance( p->origin, cg.refdef.vieworg ) < re.radius && bp->overdrawProtection ) - return; - - if( bp->framerate == 0.0f ) - { - //sync animation time to lifeTime of particle - index = (int)( timeFrac * ( bp->numFrames + 1 ) ); - - if( index >= bp->numFrames ) - index = bp->numFrames - 1; - - re.customShader = bp->shaders[ index ]; - } - else - { - //looping animation - index = (int)( bp->framerate * timeFrac * p->lifeTime * 0.001 ) % bp->numFrames; - re.customShader = bp->shaders[ index ]; - } - - } - else if( bp->numModels ) //model based - { - re.reType = RT_MODEL; - - re.hModel = p->model; - - if( p->atRest ) - AxisCopy( p->lastAxis, re.axis ); - else - { - // convert direction of travel into axis - VectorNormalize2( p->velocity, re.axis[ 0 ] ); - - if( re.axis[ 0 ][ 0 ] == 0.0f && re.axis[ 0 ][ 1 ] == 0.0f ) - AxisCopy( axisDefault, re.axis ); - else - { - ProjectPointOnPlane( re.axis[ 2 ], up, re.axis[ 0 ] ); - VectorNormalize( re.axis[ 2 ] ); - CrossProduct( re.axis[ 2 ], re.axis[ 0 ], re.axis[ 1 ] ); - } - - AxisCopy( re.axis, p->lastAxis ); - } - - if( scale != 1.0f ) - { - VectorScale( re.axis[ 0 ], scale, re.axis[ 0 ] ); - VectorScale( re.axis[ 1 ], scale, re.axis[ 1 ] ); - VectorScale( re.axis[ 2 ], scale, re.axis[ 2 ] ); - re.nonNormalizedAxes = qtrue; - } - else - re.nonNormalizedAxes = qfalse; - - p->lf.animation = &bp->modelAnimation; - - //run animation - CG_RunLerpFrame( &p->lf ); - - re.oldframe = p->lf.oldFrame; - re.frame = p->lf.frame; - re.backlerp = p->lf.backlerp; - } - - if( bps->thirdPersonOnly && - CG_AttachmentCentNum( &ps->attachment ) == cg.snap->ps.clientNum && - !cg.renderingThirdPerson ) - re.renderfx |= RF_THIRD_PERSON; - - if( bp->dynamicLight && !( re.renderfx & RF_THIRD_PERSON ) ) - { - trap_R_AddLightToScene( p->origin, - CG_LerpValues( p->dLightRadius.initial, p->dLightRadius.final, - CG_CalculateTimeFrac( p->birthTime, p->lifeTime, p->dLightRadius.delay ) ), - (float)bp->dLightColor[ 0 ] / (float)0xFF, - (float)bp->dLightColor[ 1 ] / (float)0xFF, - (float)bp->dLightColor[ 2 ] / (float)0xFF ); - } - - VectorCopy( p->origin, re.origin ); - - trap_R_AddRefEntityToScene( &re ); -} - -/* -=============== -CG_AddParticles - -Add particles to the scene -=============== -*/ -void CG_AddParticles( void ) -{ - int i; - particle_t *p; - int numPS = 0, numPE = 0, numP = 0; - - //remove expired particle systems - CG_GarbageCollectParticleSystems( ); - - //check each ejector and introduce any new particles - CG_SpawnNewParticles( ); - - //sorting - if( cg_depthSortParticles.integer ) - CG_CompactAndSortParticles( ); - - for( i = 0; i < MAX_PARTICLES; i++ ) - { - p = sortedParticles[ i ]; - - if( p->valid ) - { - if( p->birthTime + p->lifeTime > cg.time ) - { - //particle is active - CG_EvaluateParticlePhysics( p ); - CG_RenderParticle( p ); - } - else - CG_DestroyParticle( p, NULL ); - } - } - - if( cg_debugParticles.integer >= 2 ) - { - for( i = 0; i < MAX_PARTICLE_SYSTEMS; i++ ) - if( particleSystems[ i ].valid ) - numPS++; - - for( i = 0; i < MAX_PARTICLE_EJECTORS; i++ ) - if( particleEjectors[ i ].valid ) - numPE++; - - for( i = 0; i < MAX_PARTICLES; i++ ) - if( particles[ i ].valid ) - numP++; - - CG_Printf( "PS: %d PE: %d P: %d\n", numPS, numPE, numP ); - } -} - -/* -=============== -CG_ParticleSystemEntity - -Particle system entity client code -=============== -*/ -void CG_ParticleSystemEntity( centity_t *cent ) -{ - entityState_t *es; - - es = ¢->currentState; - - if( es->eFlags & EF_NODRAW ) - { - if( CG_IsParticleSystemValid( ¢->entityPS ) && CG_IsParticleSystemInfinite( cent->entityPS ) ) - CG_DestroyParticleSystem( ¢->entityPS ); - - return; - } - - if( !CG_IsParticleSystemValid( ¢->entityPS ) && !cent->entityPSMissing ) - { - cent->entityPS = CG_SpawnNewParticleSystem( cgs.gameParticleSystems[ es->modelindex ] ); - - if( CG_IsParticleSystemValid( ¢->entityPS ) ) - { - CG_SetAttachmentPoint( ¢->entityPS->attachment, cent->lerpOrigin ); - CG_SetAttachmentCent( ¢->entityPS->attachment, cent ); - CG_AttachToPoint( ¢->entityPS->attachment ); - } - else - cent->entityPSMissing = qtrue; - } -} - -static particleSystem_t *testPS; -static qhandle_t testPSHandle; - -/* -=============== -CG_DestroyTestPS_f - -Destroy the test a particle system -=============== -*/ -void CG_DestroyTestPS_f( void ) -{ - if( CG_IsParticleSystemValid( &testPS ) ) - CG_DestroyParticleSystem( &testPS ); -} - -/* -=============== -CG_TestPS_f - -Test a particle system -=============== -*/ -void CG_TestPS_f( void ) -{ - vec3_t origin; - vec3_t up = { 0.0f, 0.0f, 1.0f }; - char psName[ MAX_QPATH ]; - - if( trap_Argc( ) < 2 ) - return; - - Q_strncpyz( psName, CG_Argv( 1 ), MAX_QPATH ); - testPSHandle = CG_RegisterParticleSystem( psName ); - - if( testPSHandle ) - { - CG_DestroyTestPS_f( ); - - testPS = CG_SpawnNewParticleSystem( testPSHandle ); - - VectorMA( cg.refdef.vieworg, 100, cg.refdef.viewaxis[ 0 ], origin ); - - if( CG_IsParticleSystemValid( &testPS ) ) - { - CG_SetAttachmentPoint( &testPS->attachment, origin ); - CG_SetParticleSystemNormal( testPS, up ); - CG_AttachToPoint( &testPS->attachment ); - } - } -} |