void ImageInterpolatedValue(unsigned char *data, int w, double x, double y, unsigned char c[3])
{
int x0 = floor(x), x1 = ceil(x), y0 = floor(y), y1 = ceil(y);
unsigned char nc[4][3], xc[2][3];
ImageValue(data, w, x0, y0, nc[0]);
ImageValue(data, w, x1, y0, nc[1]);
ImageValue(data, w, x0, y1, nc[2]);
ImageValue(data, w, x1, y1, nc[3]);
double d0 = x - x0, d1 = y - y0;
InterpColor(nc[0], nc[1], d0, xc[0]);
InterpColor(nc[2], nc[3], d0, xc[1]);
InterpColor(xc[0], xc[1], d1, c);
}
inline void C_ParticleSmokeGrenade::UpdateParticleDuringTrade( int iParticle, float fTimeDelta )
{
SmokeParticleInfo *pInfo = &m_SmokeParticleInfos[iParticle];
SmokeParticleInfo *pOther = &m_SmokeParticleInfos[pInfo->m_TradeIndex];
Assert(pOther->m_TradeIndex == iParticle);
// 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(iParticle, x, y, z);
Vector myPos = GetSmokeParticlePos(x, y, z) - m_SmokeBasePos;
int otherX, otherY, otherZ;
GetParticleInfoXYZ(pInfo->m_TradeIndex, otherX, otherY, otherZ);
Vector otherPos = GetSmokeParticlePos(otherX, otherY, otherZ) - m_SmokeBasePos;
// 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_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 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_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;
}
}
}
}
}
}
