//-----------------------------------------------------------------------------
// Purpose:
// Input : fTimeDelta -
//-----------------------------------------------------------------------------
void C_SmokeStack::Update(float fTimeDelta)
{
if (!m_pParticleMgr)
{
assert(false);
return;
}
// Don't spawn particles unless we're visible.
if (m_bEmit && (m_ParticleEffect.WasDrawnPrevFrame() || m_ParticleEffect.GetAlwaysSimulate()))
{
// Add new particles.
Vector forward, right, up;
AngleVectors(GetAbsAngles(), &forward, &right, &up);
float tempDelta = fTimeDelta;
while (m_ParticleSpawn.NextEvent(tempDelta))
{
int iRandomFrame = random->RandomInt(0, m_iMaxFrames);
iRandomFrame = 0;
// Make a new particle.
if (SmokeStackParticle *pParticle = (SmokeStackParticle*) m_ParticleEffect.AddParticle(sizeof(SmokeStackParticle), m_MaterialHandle[iRandomFrame]))
{
float angle = FRand(0, 2.0f*M_PI_F);
pParticle->m_Pos = GetAbsOrigin() +
right * (cos(angle) * m_flBaseSpread) +
forward * (sin(angle) * m_flBaseSpread);
pParticle->m_Velocity =
FRand(-m_SpreadSpeed, m_SpreadSpeed) * right +
FRand(-m_SpreadSpeed, m_SpreadSpeed) * forward +
m_Speed * up;
pParticle->m_vAccel = m_vWind;
pParticle->m_Lifetime = 0;
pParticle->m_flAngle = 0.0f;
pParticle->m_flRollDelta = random->RandomFloat(-m_flRollSpeed, m_flRollSpeed);
pParticle->m_flSortPos = pParticle->m_Pos.z;
}
}
}
// Setup the twist matrix.
float flTwist = (m_flTwist * (M_PI_F * 2.f) / 360.0f) * Helper_GetFrameTime();
if ((m_bTwist = !!flTwist))
{
m_TwistMat[0][0] = cos(flTwist);
m_TwistMat[0][1] = sin(flTwist);
m_TwistMat[1][0] = -sin(flTwist);
m_TwistMat[1][1] = cos(flTwist);
}
QueueLightParametersInRenderer();
}
void NoiseGenerator::GenerateShiftNoise(std::vector<double>& out_serie)
{
srand( static_cast<unsigned>( time(0) ) );
double rand_one = rand();
double range_value_min = 1000.;
double range_value_max = 10000.;
rand_one = FRand(rand_one);
double r = rand_one * range_value_max + range_value_min;
out_serie.assign(SerieSettings::SerieSize(),r);
}
//-----------------------------------------------------------------------------
// Purpose: Starts the effect
// Input : *pParticleMgr -
// *pArgs -
//-----------------------------------------------------------------------------
void C_PerfTest::Start(CParticleMgr *pParticleMgr, IPrototypeArgAccess *pArgs)
{
pParticleMgr->AddEffect( &m_ParticleEffect, this );
m_MaterialHandle = m_ParticleEffect.FindOrAddMaterial("particle/particle_sphere");
m_pParticleMgr = pParticleMgr;
// Make a bunch of particles.
srand( 0 );
for( int i=0; i < m_nParticles; i++ )
{
PerfTestParticle *pParticle = (PerfTestParticle*)m_ParticleEffect.AddParticle( sizeof(PerfTestParticle), m_MaterialHandle );
static float spread=30;
pParticle->m_Pos = Vector(
FRand(-spread, spread),
FRand(-spread, spread),
FRand(-spread, spread));
}
}
void C_ParticleSmokeGrenade::UpdateParticleAndFindTrade( int iParticle, float fTimeDelta )
{
SmokeParticleInfo *pInfo = &m_SmokeParticleInfos[iParticle];
pInfo->m_pParticle->m_FadeAlpha = pInfo->m_FadeAlpha;
pInfo->m_pParticle->m_Color[0] = pInfo->m_Color[0];
pInfo->m_pParticle->m_Color[1] = pInfo->m_Color[1];
pInfo->m_pParticle->m_Color[2] = pInfo->m_Color[2];
// Is there an adjacent one that's not trading?
int x, y, z;
GetParticleInfoXYZ(iParticle, x, y, z);
int xCountOffset = rand();
int yCountOffset = rand();
int zCountOffset = rand();
bool bFound = false;
for(int xCount=0; xCount < 3 && !bFound; xCount++)
{
for(int yCount=0; yCount < 3 && !bFound; yCount++)
{
for(int zCount=0; zCount < 3; zCount++)
{
int testX = x + g_OffsetLookup[(xCount+xCountOffset) % 3];
int testY = y + g_OffsetLookup[(yCount+yCountOffset) % 3];
int testZ = z + g_OffsetLookup[(zCount+zCountOffset) % 3];
if(testX == x && testY == y && testZ == z)
continue;
if(IsValidXYZCoords(testX, testY, testZ))
{
SmokeParticleInfo *pOther = GetSmokeParticleInfo(testX, testY, testZ);
if(pOther->m_pParticle && pOther->m_TradeIndex == -1)
{
// Ok, this one is looking to trade also.
pInfo->m_TradeIndex = GetSmokeParticleIndex(testX, testY, testZ);
pOther->m_TradeIndex = iParticle;
pInfo->m_TradeClock = pOther->m_TradeClock = 0;
pInfo->m_TradeDuration = FRand(TRADE_DURATION_MIN, TRADE_DURATION_MAX);
bFound = true;
break;
}
}
}
}
}
}
void NoiseGenerator::GenerateJumpNoise(std::vector<double>& out_serie)
{
std::vector<double> x_points;
std::vector<double> jump_values;
srand( static_cast<unsigned>( time(0) ) );
double rand_one = rand();
double range_value_min = 1.;
double range_value_max = 100.;
for( int i = 0 ; i < SerieSettings::SerieSize() ; i++ )
{
rand_one = FRand(rand_one);
if( rand_one <= 0.01 )
{
rand_one = FRand(rand_one);
double r = rand_one * range_value_max + range_value_min;
out_serie.push_back(r);
}
else
out_serie.push_back(0.);
}
}
void NoiseGenerator::GenerateWhiteNoise(std::vector<double>& out_serie)
{
srand( static_cast<unsigned>( time(0) ) );
out_serie.clear();
double RANGE_MIN = -10.;
double RANGE_MAX = 10.;
double rand_one = rand();
for( int i = 0 ; i < SerieSettings::SerieSize() ; i++ )
{
rand_one = FRand(rand_one);
double rand100 = rand_one * RANGE_MAX + RANGE_MIN;
out_serie.push_back(rand100);
}
UINT addr = -1;
}
void C_AR2Explosion::Start(CParticleMgr *pParticleMgr, IPrototypeArgAccess *pArgs)
{
m_pParticleMgr = pParticleMgr;
if(!pParticleMgr->AddEffect(&m_ParticleEffect, this))
return;
if (!m_szMaterialName[0])
{
strcpy(m_szMaterialName, "particle/particle_noisesphere");
}
m_MaterialHandle = m_ParticleEffect.FindOrAddMaterial(m_szMaterialName);
// Precalculate stuff for the particle spawning..
#define NUM_DUSTEMITTER_SURFINFOS 128
SurfInfo surfInfos[NUM_DUSTEMITTER_SURFINFOS];
int nSurfInfos;
// Center of explosion.
Vector vCenter = GetAbsOrigin(); // HACKHACK.. when the engine bug is fixed, use origin.
#ifdef PARTICLEPROTOTYPE_APP
float surfSize = 10000;
nSurfInfos = 1;
surfInfos[0].m_Verts[0].Init(-surfSize,-surfSize,0);
surfInfos[0].m_Verts[1].Init(-surfSize,surfSize,0);
surfInfos[0].m_Verts[2].Init(surfSize, surfSize,0);
surfInfos[0].m_Verts[3].Init(surfSize,-surfSize,0);
surfInfos[0].m_nVerts = 4;
surfInfos[0].m_Plane.m_Normal.Init(0,0,1);
surfInfos[0].m_Plane.m_Dist = -3;
#else
{
nSurfInfos = 0;
C_BaseEntity *ent = cl_entitylist->GetEnt( 0 );
if ( ent )
{
nSurfInfos = engine->GetIntersectingSurfaces(
ent->GetModel(),
vCenter,
AR2_DUST_RADIUS,
true,
surfInfos,
NUM_DUSTEMITTER_SURFINFOS);
}
}
#endif
int nParticles = 0;
if(nSurfInfos > 0)
{
// For nParticles*N, generate a ray and cast it out. If it hits anything, spawn a particle there.
int nTestsPerParticle=3;
for(int i=0; i < NUM_AR2_EXPLOSION_PARTICLES; i++)
{
for(int iTest=0; iTest < nTestsPerParticle; iTest++)
{
Vector randVec = RandomVector(-1,1);
VectorNormalize( randVec );
Vector startPos = vCenter + randVec * AR2_DUST_RADIUS;
randVec = RandomVector(-1,1);
VectorNormalize( randVec );
Vector endPos = vCenter + randVec * AR2_DUST_RADIUS;
#define MAX_SURFINFO_INTERSECTIONS 4
SurfInfo *pIntersected[MAX_SURFINFO_INTERSECTIONS];
Vector vIntersections[MAX_SURFINFO_INTERSECTIONS];
int nIntersections;
nIntersections = IntersectSegmentWithSurfInfos(
startPos,
endPos,
surfInfos,
nSurfInfos,
pIntersected,
vIntersections,
MAX_SURFINFO_INTERSECTIONS);
if(nIntersections)
{
int iIntersection = rand() % nIntersections;
Vector velocity;
//velocity.Init(-1.0f + ((float)rand()/RAND_MAX) * 2.0f, -1.0f + ((float)rand()/RAND_MAX) * 2.0f, -1.0f + ((float)rand()/RAND_MAX) * 2.0f);
//velocity = velocity * FRand(m_MinSpeed, m_MaxSpeed);
Vector direction = (vIntersections[iIntersection] - vCenter );
float dist = VectorNormalize( direction );
if(dist > AR2_DUST_RADIUS)
dist = AR2_DUST_RADIUS;
static float power = 2.0f;
float falloffMul = pow(1.0f - dist / AR2_DUST_RADIUS, power);
Vector reflection = direction - 2 * DotProduct( direction, pIntersected[iIntersection]->m_Plane.m_Normal ) * pIntersected[iIntersection]->m_Plane.m_Normal;
VectorNormalize( reflection );
velocity = reflection * AR2_DUST_SPEED * falloffMul;
// velocity = velocity + (vIntersections[iIntersection] - vCenter) * falloffMul;
/*
debugoverlay->AddLineOverlay( vIntersections[iIntersection],
vIntersections[iIntersection] + reflection * 64,
128, 128, 255, false, 15.0 );
*/
#if 1
AR2ExplosionParticle *pParticle =
(AR2ExplosionParticle*)m_ParticleEffect.AddParticle( sizeof(AR2ExplosionParticle), m_MaterialHandle );
if(pParticle)
{
pParticle->m_Pos = vIntersections[iIntersection];
pParticle->m_Start = pParticle->m_Pos;
pParticle->m_Dist = 8.0;
pParticle->m_Velocity = velocity;
// sound == 13031.496062992125984251968503937ips
pParticle->m_Lifetime = -dist / 13031.5f - 0.1;
pParticle->m_Roll = FRand( 0, M_PI * 2 );
pParticle->m_RollSpeed = FRand( -1, 1 ) * 0.4;
pParticle->m_Dwell = AR2_DUST_LIFETIME + random->RandomFloat( 0, AR2_DUST_LIFETIME_DELTA );
nParticles++;
break;
}
#endif
}
}
}
}
// build interior smoke particles
for(int i=nParticles; i < NUM_AR2_EXPLOSION_PARTICLES; i++)
{
Vector randVec = RandomVector(-1,1);
VectorNormalize( randVec );
Vector endPos = vCenter + randVec * AR2_DUST_RADIUS / 4.0;
Vector direction = (endPos - vCenter );
float dist = VectorNormalize( direction ) + random->RandomFloat( 0, AR2_DUST_RADIUS / 4.0 );
if(dist > AR2_DUST_RADIUS)
dist = AR2_DUST_RADIUS;
static float power = 2.0f;
float falloffMul = pow(1.0f - dist / (AR2_DUST_RADIUS / 2), power);
Vector velocity = direction * AR2_DUST_SPEED * falloffMul;
AR2ExplosionParticle *pParticle =
(AR2ExplosionParticle*)m_ParticleEffect.AddParticle( sizeof(AR2ExplosionParticle), m_MaterialHandle );
if(pParticle)
{
pParticle->m_Pos = endPos;
pParticle->m_Start = pParticle->m_Pos;
pParticle->m_Dist = 8.0;
pParticle->m_Velocity = velocity;
// sound == 13031.496062992125984251968503937ips
pParticle->m_Lifetime = -dist / 13031.5f - 0.1;
pParticle->m_Roll = FRand( 0, M_PI * 2 );
pParticle->m_RollSpeed = FRand( -1, 1 ) * 4.0;
pParticle->m_Dwell = 0.5 * (AR2_DUST_LIFETIME + random->RandomFloat( 0, AR2_DUST_LIFETIME_DELTA ));
}
}
}
void C_FuncSmokeVolume::FillVolume()
{
Vector vPos;
for(int x=0; x < m_xCount; x++)
{
for(int y=0; y < m_yCount; y++)
{
for(int z=0; z < m_zCount; z++)
{
vPos = GetSmokeParticlePos( x, y, z );
if(SmokeParticleInfo *pInfo = GetSmokeParticleInfo(x,y,z))
{
int contents = GetWorldPointContents(vPos);
if(contents & CONTENTS_SOLID)
{
pInfo->m_pParticle = NULL;
}
else
{
SmokeGrenadeParticle *pParticle =
(SmokeGrenadeParticle*)m_ParticleEffect.AddParticle(sizeof(SmokeGrenadeParticle), m_MaterialHandle);
if(pParticle)
{
pParticle->m_Pos = vPos;
pParticle->m_ColorInterp = (unsigned char)((rand() * 255) / RAND_MAX);
pParticle->m_RotationFactor = FRand( -1.0f, 1.0f ); // Rotation factor.
pParticle->m_CurRotation = FRand( -m_RotationSpeed, m_RotationSpeed );
}
#ifdef _DEBUG
int testX, testY, testZ;
int index = GetSmokeParticleIndex(x,y,z);
GetParticleInfoXYZ(index, testX, testY, testZ);
assert(testX == x && testY == y && testZ == z);
#endif
Vector vColor = EngineGetLightForPoint(vPos);
pInfo->m_Color[0] = LinearToTexture( vColor.x );
pInfo->m_Color[1] = LinearToTexture( vColor.y );
pInfo->m_Color[2] = LinearToTexture( vColor.z );
// Cast some rays and if it's too close to anything, fade its alpha down.
pInfo->m_FadeAlpha = 1;
for(int i=0; i < NUM_FADE_PLANES; i++)
{
trace_t trace;
WorldTraceLine(vPos, vPos + s_FadePlaneDirections[i] * 100, MASK_SOLID_BRUSHONLY, &trace);
if(trace.fraction < 1.0f)
{
float dist = DotProduct(trace.plane.normal, vPos) - trace.plane.dist;
if(dist < 0)
{
pInfo->m_FadeAlpha = 0;
}
else if(dist < m_ParticleRadius)
{
float alphaScale = dist / m_ParticleRadius;
alphaScale *= alphaScale * alphaScale;
pInfo->m_FadeAlpha *= alphaScale;
}
}
}
pInfo->m_pParticle = pParticle;
pInfo->m_TradeIndex = -1;
}
}
}
}
}
}
void C_FuncSmokeVolume::Update( float fTimeDelta )
{
// lerp m_CurrentDensity towards m_Density at a rate of m_DensityRampSpeed
if( m_CurrentDensity < m_Density )
{
m_CurrentDensity += m_DensityRampSpeed * fTimeDelta;
if( m_CurrentDensity > m_Density )
{
m_CurrentDensity = m_Density;
}
}
else if( m_CurrentDensity > m_Density )
{
m_CurrentDensity -= m_DensityRampSpeed * fTimeDelta;
if( m_CurrentDensity < m_Density )
{
m_CurrentDensity = m_Density;
}
}
if( m_CurrentDensity == 0.0f )
{
return;
}
// This is used to randomize the direction it chooses to move a particle in.
int offsetLookup[3] = {-1,0,1};
float tradeDurationMax = m_ParticleSpacingDistance / m_MovementSpeed;
float tradeDurationMin = tradeDurationMax * 0.5f;
// Warning( "tradeDuration: [%f,%f]\n", tradeDurationMin, tradeDurationMax );
// Update all the moving traders and establish new ones.
int nTotal = m_xCount * m_yCount * m_zCount;
for( int i=0; i < nTotal; i++ )
{
SmokeParticleInfo *pInfo = &m_pSmokeParticleInfos[i];
if(!pInfo->m_pParticle)
continue;
if(pInfo->m_TradeIndex == -1)
{
pInfo->m_pParticle->m_FadeAlpha = pInfo->m_FadeAlpha;
pInfo->m_pParticle->m_Color[0] = pInfo->m_Color[0];
pInfo->m_pParticle->m_Color[1] = pInfo->m_Color[1];
pInfo->m_pParticle->m_Color[2] = pInfo->m_Color[2];
// Is there an adjacent one that's not trading?
int x, y, z;
GetParticleInfoXYZ(i, x, y, z);
int xCountOffset = rand();
int yCountOffset = rand();
int zCountOffset = rand();
bool bFound = false;
for(int xCount=0; xCount < 3 && !bFound; xCount++)
{
for(int yCount=0; yCount < 3 && !bFound; yCount++)
{
for(int zCount=0; zCount < 3; zCount++)
{
int testX = x + offsetLookup[(xCount+xCountOffset) % 3];
int testY = y + offsetLookup[(yCount+yCountOffset) % 3];
int testZ = z + offsetLookup[(zCount+zCountOffset) % 3];
if(testX == x && testY == y && testZ == z)
continue;
if(IsValidXYZCoords(testX, testY, testZ))
{
SmokeParticleInfo *pOther = GetSmokeParticleInfo(testX, testY, testZ);
if(pOther->m_pParticle && pOther->m_TradeIndex == -1)
{
// Ok, this one is looking to trade also.
pInfo->m_TradeIndex = GetSmokeParticleIndex(testX, testY, testZ);
pOther->m_TradeIndex = i;
pInfo->m_TradeClock = pOther->m_TradeClock = 0;
pOther->m_TradeDuration = pInfo->m_TradeDuration = FRand( tradeDurationMin, tradeDurationMax );
bFound = true;
break;
}
}
}
}
}
}
else
{
SmokeParticleInfo *pOther = &m_pSmokeParticleInfos[pInfo->m_TradeIndex];
assert(pOther->m_TradeIndex == i);
// This makes sure the trade only gets updated once per frame.
if(pInfo < pOther)
{
// Increment the trade clock..
pInfo->m_TradeClock = (pOther->m_TradeClock += fTimeDelta);
int x, y, z;
GetParticleInfoXYZ(i, x, y, z);
Vector myPos = GetSmokeParticlePos(x, y, z);
int otherX, otherY, otherZ;
GetParticleInfoXYZ(pInfo->m_TradeIndex, otherX, otherY, otherZ);
Vector otherPos = GetSmokeParticlePos(otherX, otherY, otherZ);
// Is the trade finished?
if(pInfo->m_TradeClock >= pInfo->m_TradeDuration)
{
pInfo->m_TradeIndex = pOther->m_TradeIndex = -1;
pInfo->m_pParticle->m_Pos = otherPos;
pOther->m_pParticle->m_Pos = myPos;
SmokeGrenadeParticle *temp = pInfo->m_pParticle;
pInfo->m_pParticle = pOther->m_pParticle;
pOther->m_pParticle = temp;
}
else
{
// Ok, move them closer.
float percent = (float)cos(pInfo->m_TradeClock * 2 * 1.57079632f / pInfo->m_TradeDuration);
percent = percent * 0.5 + 0.5;
pInfo->m_pParticle->m_FadeAlpha = pInfo->m_FadeAlpha + (pOther->m_FadeAlpha - pInfo->m_FadeAlpha) * (1 - percent);
pOther->m_pParticle->m_FadeAlpha = pInfo->m_FadeAlpha + (pOther->m_FadeAlpha - pInfo->m_FadeAlpha) * percent;
InterpColor(pInfo->m_pParticle->m_Color, pInfo->m_Color, pOther->m_Color, 1-percent);
InterpColor(pOther->m_pParticle->m_Color, pInfo->m_Color, pOther->m_Color, percent);
pInfo->m_pParticle->m_Pos = myPos + (otherPos - myPos) * (1 - percent);
pOther->m_pParticle->m_Pos = myPos + (otherPos - myPos) * percent;
}
}
}
}
}
void RandomlyChangeVector(DTTestServer *pServer)
{
pServer->m_Vector.x = FRand(-500000, 500000);
pServer->m_Vector.y = FRand(-500000, 500000);
pServer->m_Vector.z = FRand(-500000, 500000);
}
void RandomlyChangeFloat(DTTestServer *pServer)
{
pServer->m_Float = FRand(-500000, 500000);
}
void C_FuncSmokeVolume::Update( float fTimeDelta )
{
// Update our world space bbox if we've moved at all.
// We do this manually because sometimes people make HUGE bboxes, and if they're constantly changing because their
// particles wander outside the current bounds sometimes, it'll be linking them into all the leaves repeatedly.
const Vector &curOrigin = GetAbsOrigin();
const QAngle &curAngles = GetAbsAngles();
if ( !VectorsAreEqual( curOrigin, m_vLastOrigin, 0.1 ) ||
fabs( curAngles.x - m_vLastAngles.x ) > 0.1 ||
fabs( curAngles.y - m_vLastAngles.y ) > 0.1 ||
fabs( curAngles.z - m_vLastAngles.z ) > 0.1 ||
m_bFirstUpdate )
{
m_bFirstUpdate = false;
m_vLastAngles = curAngles;
m_vLastOrigin = curOrigin;
Vector vWorldMins, vWorldMaxs;
CollisionProp()->WorldSpaceAABB( &vWorldMins, &vWorldMaxs );
vWorldMins -= Vector( m_ParticleRadius, m_ParticleRadius, m_ParticleRadius );
vWorldMaxs += Vector( m_ParticleRadius, m_ParticleRadius, m_ParticleRadius );
m_ParticleEffect.SetBBox( vWorldMins, vWorldMaxs );
}
// lerp m_CurrentDensity towards m_Density at a rate of m_DensityRampSpeed
if( m_CurrentDensity < m_Density )
{
m_CurrentDensity += m_DensityRampSpeed * fTimeDelta;
if( m_CurrentDensity > m_Density )
{
m_CurrentDensity = m_Density;
}
}
else if( m_CurrentDensity > m_Density )
{
m_CurrentDensity -= m_DensityRampSpeed * fTimeDelta;
if( m_CurrentDensity < m_Density )
{
m_CurrentDensity = m_Density;
}
}
if( m_CurrentDensity == 0.0f )
{
return;
}
// This is used to randomize the direction it chooses to move a particle in.
int offsetLookup[3] = {-1,0,1};
float tradeDurationMax = m_ParticleSpacingDistance / ( m_MovementSpeed + 0.1f );
float tradeDurationMin = tradeDurationMax * 0.5f;
if ( IS_NAN( tradeDurationMax ) || IS_NAN( tradeDurationMin ) )
return;
// Warning( "tradeDuration: [%f,%f]\n", tradeDurationMin, tradeDurationMax );
// Update all the moving traders and establish new ones.
int nTotal = m_xCount * m_yCount * m_zCount;
for( int i=0; i < nTotal; i++ )
{
SmokeParticleInfo *pInfo = &m_pSmokeParticleInfos[i];
if(!pInfo->m_pParticle)
continue;
if(pInfo->m_TradeIndex == -1)
{
pInfo->m_pParticle->m_FadeAlpha = pInfo->m_FadeAlpha;
pInfo->m_pParticle->m_Color[0] = pInfo->m_Color[0];
pInfo->m_pParticle->m_Color[1] = pInfo->m_Color[1];
pInfo->m_pParticle->m_Color[2] = pInfo->m_Color[2];
// Is there an adjacent one that's not trading?
int x, y, z;
GetParticleInfoXYZ(i, x, y, z);
int xCountOffset = rand();
int yCountOffset = rand();
int zCountOffset = rand();
bool bFound = false;
for(int xCount=0; xCount < 3 && !bFound; xCount++)
{
for(int yCount=0; yCount < 3 && !bFound; yCount++)
{
for(int zCount=0; zCount < 3; zCount++)
{
int testX = x + offsetLookup[(xCount+xCountOffset) % 3];
int testY = y + offsetLookup[(yCount+yCountOffset) % 3];
int testZ = z + offsetLookup[(zCount+zCountOffset) % 3];
if(testX == x && testY == y && testZ == z)
continue;
if(IsValidXYZCoords(testX, testY, testZ))
{
SmokeParticleInfo *pOther = GetSmokeParticleInfo(testX, testY, testZ);
if(pOther->m_pParticle && pOther->m_TradeIndex == -1)
{
// Ok, this one is looking to trade also.
pInfo->m_TradeIndex = GetSmokeParticleIndex(testX, testY, testZ);
pOther->m_TradeIndex = i;
pInfo->m_TradeClock = pOther->m_TradeClock = 0;
pOther->m_TradeDuration = pInfo->m_TradeDuration = FRand( tradeDurationMin, tradeDurationMax );
bFound = true;
break;
}
}
}
}
}
}
else
{
SmokeParticleInfo *pOther = &m_pSmokeParticleInfos[pInfo->m_TradeIndex];
assert(pOther->m_TradeIndex == i);
// This makes sure the trade only gets updated once per frame.
if(pInfo < pOther)
{
// Increment the trade clock..
pInfo->m_TradeClock = (pOther->m_TradeClock += fTimeDelta);
int x, y, z;
GetParticleInfoXYZ(i, x, y, z);
Vector myPos = GetSmokeParticlePos(x, y, z);
int otherX, otherY, otherZ;
GetParticleInfoXYZ(pInfo->m_TradeIndex, otherX, otherY, otherZ);
Vector otherPos = GetSmokeParticlePos(otherX, otherY, otherZ);
// Is the trade finished?
if(pInfo->m_TradeClock >= pInfo->m_TradeDuration)
{
pInfo->m_TradeIndex = pOther->m_TradeIndex = -1;
pInfo->m_pParticle->m_Pos = otherPos;
pOther->m_pParticle->m_Pos = myPos;
SmokeGrenadeParticle *temp = pInfo->m_pParticle;
pInfo->m_pParticle = pOther->m_pParticle;
pOther->m_pParticle = temp;
}
else
{
// Ok, move them closer.
float percent = (float)cos(pInfo->m_TradeClock * 2 * 1.57079632f / pInfo->m_TradeDuration);
percent = percent * 0.5 + 0.5;
pInfo->m_pParticle->m_FadeAlpha = pInfo->m_FadeAlpha + (pOther->m_FadeAlpha - pInfo->m_FadeAlpha) * (1 - percent);
pOther->m_pParticle->m_FadeAlpha = pInfo->m_FadeAlpha + (pOther->m_FadeAlpha - pInfo->m_FadeAlpha) * percent;
InterpColor(pInfo->m_pParticle->m_Color, pInfo->m_Color, pOther->m_Color, 1-percent);
InterpColor(pOther->m_pParticle->m_Color, pInfo->m_Color, pOther->m_Color, percent);
pInfo->m_pParticle->m_Pos = myPos + (otherPos - myPos) * (1 - percent);
pOther->m_pParticle->m_Pos = myPos + (otherPos - myPos) * percent;
}
}
}
}
}
void C_SteamJet::Update(float fTimeDelta)
{
if(!m_pParticleMgr)
{
assert(false);
return;
}
if( m_bEmit )
{
// Add new particles.
int nToEmit = 0;
float tempDelta = fTimeDelta;
while( m_ParticleSpawn.NextEvent(tempDelta) )
++nToEmit;
if ( nToEmit > 0 )
{
Vector forward, right, up;
AngleVectors(GetAbsAngles(), &forward, &right, &up);
// Legacy env_steamjet entities faced left instead of forward.
if (m_bFaceLeft)
{
Vector temp = forward;
forward = -right;
right = temp;
}
// EVIL: Ideally, we could tell the renderer our OBB, and let it build a big box that encloses
// the entity with its parent so it doesn't have to setup its parent's bones here.
Vector vEndPoint = GetAbsOrigin() + forward * m_Speed;
Vector vMin, vMax;
VectorMin( GetAbsOrigin(), vEndPoint, vMin );
VectorMax( GetAbsOrigin(), vEndPoint, vMax );
m_ParticleEffect.SetBBox( vMin, vMax );
if ( m_ParticleEffect.WasDrawnPrevFrame() )
{
while ( nToEmit-- )
{
// Make a new particle.
if( SteamJetParticle *pParticle = (SteamJetParticle*) m_ParticleEffect.AddParticle( sizeof(SteamJetParticle), m_MaterialHandle ) )
{
pParticle->m_Pos = GetAbsOrigin();
pParticle->m_Velocity =
FRand(-m_SpreadSpeed,m_SpreadSpeed) * right +
FRand(-m_SpreadSpeed,m_SpreadSpeed) * up +
m_Speed * forward;
pParticle->m_Lifetime = 0;
pParticle->m_DieTime = m_Lifetime;
pParticle->m_uchStartSize = m_StartSize;
pParticle->m_uchEndSize = m_EndSize;
pParticle->m_flRoll = random->RandomFloat( 0, 360 );
pParticle->m_flRollDelta = random->RandomFloat( -m_flRollSpeed, m_flRollSpeed );
}
}
}
UpdateLightingRamp();
}
}
}
void C_ParticleSmokeGrenade::FillVolume()
{
m_CurrentStage = 1;
m_SmokeBasePos = GetPos();
m_SmokeTrail.SetEmit(false);
m_ExpandTimeCounter = m_ExpandRadius = 0;
m_bVolumeFilled = true;
// Spawn all of our particles.
float overlap = SMOKEPARTICLE_OVERLAP;
m_SpacingRadius = (SMOKEGRENADE_PARTICLERADIUS - overlap) * NUM_PARTICLES_PER_DIMENSION * 0.5f;
m_xCount = m_yCount = m_zCount = NUM_PARTICLES_PER_DIMENSION;
float invNumPerDimX = 1.0f / (m_xCount-1);
float invNumPerDimY = 1.0f / (m_yCount-1);
float invNumPerDimZ = 1.0f / (m_zCount-1);
Vector vPos;
for(int x=0; x < m_xCount; x++)
{
vPos.x = m_SmokeBasePos.x + ((float)x * invNumPerDimX) * m_SpacingRadius * 2 - m_SpacingRadius;
for(int y=0; y < m_yCount; y++)
{
vPos.y = m_SmokeBasePos.y + ((float)y * invNumPerDimY) * m_SpacingRadius * 2 - m_SpacingRadius;
for(int z=0; z < m_zCount; z++)
{
vPos.z = m_SmokeBasePos.z + ((float)z * invNumPerDimZ) * m_SpacingRadius * 2 - m_SpacingRadius;
// Don't spawn and simulate particles that are inside a wall
int contents = enginetrace->GetPointContents( vPos );
if( contents & CONTENTS_SOLID )
{
continue;
}
if(SmokeParticleInfo *pInfo = GetSmokeParticleInfo(x,y,z))
{
// MD 11/10/03: disabled this because we weren't getting coverage near the ground.
// If we want it back in certain cases, we can make it a flag.
/*int contents = GetWorldPointContents(vPos);
if(false && (contents & CONTENTS_SOLID))
{
pInfo->m_pParticle = NULL;
}
else
*/
{
SmokeGrenadeParticle *pParticle =
(SmokeGrenadeParticle*)m_ParticleEffect.AddParticle(sizeof(SmokeGrenadeParticle), m_MaterialHandles[rand() % NUM_MATERIAL_HANDLES]);
if(pParticle)
{
pParticle->m_Pos = vPos - m_SmokeBasePos; // store its position in local space
pParticle->m_ColorInterp = (unsigned char)((rand() * 255) / RAND_MAX);
pParticle->m_RotationSpeed = FRand(-ROTATION_SPEED, ROTATION_SPEED); // Rotation speed.
pParticle->m_CurRotation = FRand(-6, 6);
}
#ifdef _DEBUG
int testX, testY, testZ;
int index = GetSmokeParticleIndex(x,y,z);
GetParticleInfoXYZ(index, testX, testY, testZ);
assert(testX == x && testY == y && testZ == z);
#endif
Vector vColor = EngineGetLightForPoint(vPos);
pInfo->m_Color[0] = (unsigned char)(vColor.x * 255.9f);
pInfo->m_Color[1] = (unsigned char)(vColor.y * 255.9f);
pInfo->m_Color[2] = (unsigned char)(vColor.z * 255.9f);
// Cast some rays and if it's too close to anything, fade its alpha down.
pInfo->m_FadeAlpha = 1;
/*for(int i=0; i < NUM_FADE_PLANES; i++)
{
trace_t trace;
WorldTraceLine(vPos, vPos + s_FadePlaneDirections[i] * 100, MASK_SOLID_BRUSHONLY, &trace);
if(trace.fraction < 1.0f)
{
float dist = DotProduct(trace.plane.normal, vPos) - trace.plane.dist;
if(dist < 0)
{
pInfo->m_FadeAlpha = 0;
}
else if(dist < SMOKEPARTICLE_SIZE)
{
float alphaScale = dist / SMOKEPARTICLE_SIZE;
alphaScale *= alphaScale * alphaScale;
pInfo->m_FadeAlpha *= alphaScale;
}
}
}*/
pInfo->m_pParticle = pParticle;
pInfo->m_TradeIndex = -1;
}
}
}
}
}
}
void C_ParticleSmokeGrenade::Update(float fTimeDelta)
{
m_LifetimeCounter += fTimeDelta;
// Update the smoke trail.
C_BaseEntity *pAimEnt = GetFollowedEntity();
if ( pAimEnt )
{
Vector forward, right, up;
// Update the smoke particle color.
if(m_CurrentStage == 0)
{
m_SmokeTrail.m_StartColor = EngineGetLightForPoint(GetAbsOrigin()) * 0.5f;
m_SmokeTrail.m_EndColor = m_SmokeTrail.m_StartColor;
}
// Spin the smoke trail.
AngleVectors(pAimEnt->GetAbsAngles(), &forward, &right, &up);
m_SmokeTrail.m_VelocityOffset = forward * 30 + GetAbsVelocity();
m_SmokeTrail.SetLocalOrigin( GetAbsOrigin() );
m_SmokeTrail.Update(fTimeDelta);
}
// Update our fade alpha.
if(m_LifetimeCounter < m_FadeStartTime)
{
m_FadeAlpha = 1;
}
else if(m_LifetimeCounter < m_FadeEndTime)
{
float fadePercent = (m_LifetimeCounter - m_FadeStartTime) / (m_FadeEndTime - m_FadeStartTime);
m_FadeAlpha = cos(fadePercent * 3.14159) * 0.5 + 0.5;
}
else
{
m_FadeAlpha = 0;
}
// Scale by the amount the sphere has grown.
m_FadeAlpha *= m_ExpandRadius / SMOKESPHERE_MAX_RADIUS;
if(m_CurrentStage == 1)
{
// Update the expanding sphere.
m_ExpandTimeCounter += fTimeDelta;
if(m_ExpandTimeCounter > SMOKESPHERE_EXPAND_TIME)
m_ExpandTimeCounter = SMOKESPHERE_EXPAND_TIME;
m_ExpandRadius = SMOKESPHERE_MAX_RADIUS * (float)sin(m_ExpandTimeCounter * 3.14159265358 * 0.5 / SMOKESPHERE_EXPAND_TIME);
// Add our influence to the global smoke fog alpha.
float testDist = (EngineGetVecRenderOrigin() - m_SmokeBasePos).Length();
float fadeEnd = m_ExpandRadius * 0.75;
if(testDist < fadeEnd)
{
EngineGetSmokeFogOverlayAlpha() += 1 - testDist / fadeEnd;
}
// This is used to randomize the direction it chooses to move a particle in.
int offsetLookup[3] = {-1,0,1};
// Update all the moving traders and establish new ones.
int nTotal = m_xCount * m_yCount * m_zCount;
for(int i=0; i < nTotal; i++)
{
SmokeParticleInfo *pInfo = &m_SmokeParticleInfos[i];
if(!pInfo->m_pParticle)
continue;
if(pInfo->m_TradeIndex == -1)
{
pInfo->m_pParticle->m_FadeAlpha = pInfo->m_FadeAlpha;
pInfo->m_pParticle->m_Color[0] = pInfo->m_Color[0];
pInfo->m_pParticle->m_Color[1] = pInfo->m_Color[1];
pInfo->m_pParticle->m_Color[2] = pInfo->m_Color[2];
// Is there an adjacent one that's not trading?
int x, y, z;
GetParticleInfoXYZ(i, x, y, z);
int xCountOffset = rand();
int yCountOffset = rand();
int zCountOffset = rand();
bool bFound = false;
for(int xCount=0; xCount < 3 && !bFound; xCount++)
{
for(int yCount=0; yCount < 3 && !bFound; yCount++)
{
for(int zCount=0; zCount < 3; zCount++)
{
int testX = x + offsetLookup[(xCount+xCountOffset) % 3];
int testY = y + offsetLookup[(yCount+yCountOffset) % 3];
int testZ = z + offsetLookup[(zCount+zCountOffset) % 3];
if(testX == x && testY == y && testZ == z)
continue;
if(IsValidXYZCoords(testX, testY, testZ))
{
SmokeParticleInfo *pOther = GetSmokeParticleInfo(testX, testY, testZ);
if(pOther->m_pParticle && pOther->m_TradeIndex == -1)
{
// Ok, this one is looking to trade also.
pInfo->m_TradeIndex = GetSmokeParticleIndex(testX, testY, testZ);
pOther->m_TradeIndex = i;
pInfo->m_TradeClock = pOther->m_TradeClock = 0;
pInfo->m_TradeDuration = FRand(TRADE_DURATION_MIN, TRADE_DURATION_MAX);
bFound = true;
break;
}
}
}
}
}
}
else
{
SmokeParticleInfo *pOther = &m_SmokeParticleInfos[pInfo->m_TradeIndex];
assert(pOther->m_TradeIndex == i);
// This makes sure the trade only gets updated once per frame.
if(pInfo < pOther)
{
// Increment the trade clock..
pInfo->m_TradeClock = (pOther->m_TradeClock += fTimeDelta);
int x, y, z;
GetParticleInfoXYZ(i, x, y, z);
Vector myPos = GetSmokeParticlePos(x, y, z);
int otherX, otherY, otherZ;
GetParticleInfoXYZ(pInfo->m_TradeIndex, otherX, otherY, otherZ);
Vector otherPos = GetSmokeParticlePos(otherX, otherY, otherZ);
// Is the trade finished?
if(pInfo->m_TradeClock >= pInfo->m_TradeDuration)
{
pInfo->m_TradeIndex = pOther->m_TradeIndex = -1;
pInfo->m_pParticle->m_Pos = otherPos;
pOther->m_pParticle->m_Pos = myPos;
SmokeGrenadeParticle *temp = pInfo->m_pParticle;
pInfo->m_pParticle = pOther->m_pParticle;
pOther->m_pParticle = temp;
}
else
{
// Ok, move them closer.
float percent = (float)cos(pInfo->m_TradeClock * 2 * 1.57079632f / pInfo->m_TradeDuration);
percent = percent * 0.5 + 0.5;
pInfo->m_pParticle->m_FadeAlpha = pInfo->m_FadeAlpha + (pOther->m_FadeAlpha - pInfo->m_FadeAlpha) * (1 - percent);
pOther->m_pParticle->m_FadeAlpha = pInfo->m_FadeAlpha + (pOther->m_FadeAlpha - pInfo->m_FadeAlpha) * percent;
InterpColor(pInfo->m_pParticle->m_Color, pInfo->m_Color, pOther->m_Color, 1-percent);
InterpColor(pOther->m_pParticle->m_Color, pInfo->m_Color, pOther->m_Color, percent);
pInfo->m_pParticle->m_Pos = myPos + (otherPos - myPos) * (1 - percent);
pOther->m_pParticle->m_Pos = myPos + (otherPos - myPos) * percent;
}
}
}
}
}
}