int CParticle::Create (CFixVector *vPos, CFixVector *vDir, CFixMatrix *mOrient,
short nSegment, int nLife, int nSpeed, char nParticleSystemType, char nClass,
float nScale, tRgbaColorf *colorP, int nCurTime, int bBlowUp,
float fBrightness, CFixVector *vEmittingFace)
{
static tRgbaColorf defaultColor = {1,1,1,1};
tRgbaColorf color;
CFixVector vDrift;
int nRad, nFrames, nType = particleImageManager.GetType (nParticleSystemType);
if (nScale < 0)
nRad = (int) -nScale;
else if (gameOpts->render.particles.bSyncSizes)
nRad = (int) PARTICLE_SIZE (gameOpts->render.particles.nSize [0], nScale);
else
nRad = (int) nScale;
if (!nRad)
nRad = I2X (1);
m_nType = nType;
m_bEmissive = (nParticleSystemType == LIGHT_PARTICLES);
m_nClass = nClass;
m_nSegment = nSegment;
m_nBounce = 0;
color = colorP ? *colorP : defaultColor;
m_color [0] =
m_color [1] = color;
if ((nType == BULLET_PARTICLES) || (nType == BUBBLE_PARTICLES)) {
m_bBright = 0;
m_nFade = -1;
}
else {
m_bBright = (nType == SMOKE_PARTICLES) ? (rand () % 50) == 0 : 0;
if (colorP) {
if (nType != LIGHT_PARTICLES) {
m_color [0].red *= RANDOM_FADE;
m_color [0].green *= RANDOM_FADE;
m_color [0].blue *= RANDOM_FADE;
}
m_nFade = 0;
}
else {
m_color [0].red = 1.0f;
m_color [0].green = 0.5f;
m_color [0].blue = 0.0f;
m_nFade = 2;
}
if (m_bEmissive)
m_color [0].alpha = (float) (SMOKE_START_ALPHA + 64) / 255.0f;
else if (nParticleSystemType != GATLING_PARTICLES) {
if (!colorP)
m_color [0].alpha = (float) (SMOKE_START_ALPHA + randN (64)) / 255.0f;
else {
if (colorP->alpha < 0)
m_color [0].alpha = -colorP->alpha;
else {
if (2 == (m_nFade = (char) colorP->alpha)) {
m_color [0].red = 1.0f;
m_color [0].green = 0.5f;
m_color [0].blue = 0.0f;
}
m_color [0].alpha = (float) (SMOKE_START_ALPHA + randN (64)) / 255.0f;
}
}
}
#if 1
if (gameOpts->render.particles.bDisperse && !m_bBright) {
fBrightness = 1.0f - fBrightness;
m_color [0].alpha += fBrightness * fBrightness / 8.0f;
}
#endif
}
//nSpeed = (int) (sqrt (nSpeed) * (float) I2X (1));
nSpeed *= I2X (1);
if (vDir) {
CAngleVector a;
CFixMatrix m;
float d;
a [PA] = randN (I2X (1) / 4) - I2X (1) / 8;
a [BA] = randN (I2X (1) / 4) - I2X (1) / 8;
a [HA] = randN (I2X (1) / 4) - I2X (1) / 8;
m = CFixMatrix::Create (a);
vDrift = m * (*vDir);
CFixVector::Normalize (vDrift);
d = (float) CFixVector::DeltaAngle (vDrift, *vDir, NULL);
if (d) {
d = (float) exp ((I2X (1) / 8) / d);
nSpeed = (fix) ((float) nSpeed / d);
}
#if 0
if (!colorP) // hack for static particleSystem w/o user defined color
m_color [0].green =
m_color [0].blue = 1.0f;
#endif
vDrift *= nSpeed;
if ((nType == SMOKE_PARTICLES) || (nType == BUBBLE_PARTICLES))
m_vDir = *vDir * (I2X (3) / 4 + I2X (randN (16)) / 64);
else
m_vDir = *vDir;
m_bHaveDir = 1;
}
else {
CFixVector vOffs;
vDrift [X] = nSpeed - randN (2 * nSpeed);
vDrift [Y] = nSpeed - randN (2 * nSpeed);
vDrift [Z] = nSpeed - randN (2 * nSpeed);
vOffs = vDrift;
m_vDir.SetZero ();
m_bHaveDir = 1;
}
m_vDrift = vDrift;
if (vEmittingFace)
m_vPos = *RandomPointOnQuad (vEmittingFace, vPos);
else if (nType != BUBBLE_PARTICLES)
m_vPos = *vPos + vDrift * (I2X (1) / 64);
else {
//m_vPos = *vPos + vDrift * (I2X (1) / 32);
nSpeed = vDrift.Mag () / 16;
vDrift = CFixVector::Avg ((*mOrient).RVec () * (nSpeed - randN (2 * nSpeed)), (*mOrient).UVec () * (nSpeed - randN (2 * nSpeed)));
m_vPos = *vPos + vDrift + (*mOrient).FVec () * (I2X (1) / 2 - randN (I2X (1)));
#if 1
m_vDrift.SetZero ();
#else
CFixVector::Normalize (m_vDrift);
m_vDrift *= I2X (32);
#endif
}
if ((nType != BUBBLE_PARTICLES) && mOrient) {
CAngleVector vRot;
CFixMatrix mRot;
vRot [BA] = 0;
vRot [PA] = 2048 - ((d_rand () % 9) * 512);
vRot [HA] = 2048 - ((d_rand () % 9) * 512);
mRot = CFixMatrix::Create (vRot);
m_mOrient = *mOrient * mRot;
}
if (nLife < 0)
nLife = -nLife;
if (nType == SMOKE_PARTICLES) {
if (gameOpts->render.particles.bDisperse)
nLife = (nLife * 2) / 3;
nLife = nLife / 2 + randN (nLife / 2);
}
m_nLife =
m_nTTL = nLife;
m_nMoved = nCurTime;
m_nDelay = 0; //bStart ? randN (nLife) : 0;
if (nType == SMOKE_PARTICLES)
nRad += randN (nRad);
else if (nType == BUBBLE_PARTICLES)
nRad = nRad / 10 + randN (9 * nRad / 10);
else
nRad *= 2;
if ((m_bBlowUp = bBlowUp)) {
m_nRad = nRad / 2;
m_nWidth =
m_nHeight = m_nRad;
m_nRad += m_nRad / bBlowUp;
}
else {
m_nWidth =
m_nHeight = nRad;
m_nRad = nRad / 2;
}
nFrames = nParticleFrames [0][nType];
if (nType == BULLET_PARTICLES) {
m_nFrame = 0;
m_nRotFrame = 0;
m_nOrient = 3;
}
else if (nType == BUBBLE_PARTICLES) {
m_nFrame = rand () % (nFrames * nFrames);
m_nRotFrame = 0;
m_nOrient = 0;
}
else if (nType == LIGHT_PARTICLES) {
m_nFrame = 0;
m_nRotFrame = 0;
m_nOrient = 0;
}
else {
m_nFrame = rand () % (nFrames * nFrames);
m_nRotFrame = m_nFrame / 2;
m_nOrient = rand () % 4;
}
#if 1
if (m_bEmissive)
m_color [0].alpha *= ParticleBrightness (colorP);
else if (nParticleSystemType == SMOKE_PARTICLES)
m_color [0].alpha /= colorP ? color.red + color.green + color.blue + 2 : 2;
else if (nParticleSystemType == BUBBLE_PARTICLES)
m_color [0].alpha /= 2;
else if (nParticleSystemType == LIGHT_PARTICLES)
m_color [0].alpha /= 5;
# if 0
else if (nParticleSystemType == GATLING_PARTICLES)
;//m_color [0].alpha /= 6;
# endif
#endif
return 1;
}
int CParticle::Create (CFixVector *vPos, CFixVector *vDir, CFixMatrix *mOrient,
short nSegment, int nLife, int nSpeed, char nParticleSystemType, char nClass,
float nScale, tRgbaColorf *colorP, int nCurTime, int bBlowUp, char nFadeType,
float fBrightness, CFixVector *vEmittingFace)
{
tRgbaColorf color;
int nType = particleImageManager.GetType (nParticleSystemType);
m_bChecked = 0;
m_bBlowUp = bBlowUp && gameOpts->render.particles.bDisperse;
if (nScale < 0)
m_nRad = float (-nScale);
else if (gameOpts->render.particles.bSyncSizes)
m_nRad = float (PARTICLE_SIZE (gameOpts->render.particles.nSize [0], nScale, m_bBlowUp));
else
m_nRad = float (nScale);
if (!m_nRad)
m_nRad = 1.0f;
m_nType = nType;
m_bEmissive = (nParticleSystemType == LIGHT_PARTICLES) ? 1 : (nParticleSystemType == FIRE_PARTICLES) ? 2 : 0;
m_nClass = nClass;
m_nFadeType = nFadeType;
m_nSegment = nSegment;
m_nBounce = ((m_nType == BUBBLE_PARTICLES) || (m_nType == WATERFALL_PARTICLES)) ? 1 : 2;
m_bReversed = 0;
m_nMoved = nCurTime;
if (nLife < 0)
nLife = -nLife;
m_nLife = nLife;
m_nDelay = 0; //bStart ? randN (nLife) : 0;
m_color [0] =
m_color [1] =
color = (colorP && (m_bEmissive < 2)) ? *colorP : defaultParticleColor;
if ((nType == BULLET_PARTICLES) || (nType == BUBBLE_PARTICLES)) {
m_bBright = 0;
m_nFadeState = -1;
}
else {
m_bBright = (nType <= SMOKE_PARTICLES) ? (rand () % 50) == 0 : 0;
if (colorP) {
if (!m_bEmissive) {
m_color [0].red *= RANDOM_FADE;
m_color [0].green *= RANDOM_FADE;
m_color [0].blue *= RANDOM_FADE;
}
m_nFadeState = 0;
}
else {
m_color [0].red = 1.0f;
m_color [0].green = 0.5f;
m_color [0].blue = 0.0f;
m_nFadeState = 2;
}
if (m_bEmissive)
m_color [0].alpha = float (SMOKE_START_ALPHA + 64) / 255.0f;
else if (nParticleSystemType != GATLING_PARTICLES) {
if (!colorP)
m_color [0].alpha = float (3 * SMOKE_START_ALPHA / 4 + randN (SMOKE_START_ALPHA / 2)) / 255.0f;
else {
if (colorP->alpha < 0) {
ubyte a = ubyte (-colorP->alpha * 255.0f * 0.25f + 0.5f);
m_color [0].alpha = float (3 * a + randN (2 * a)) / 255.0f;
}
else {
if (2 == (m_nFadeState = char (colorP->alpha))) {
m_color [0].red = 1.0f;
m_color [0].green = 0.5f;
m_color [0].blue = 0.0f;
}
m_color [0].alpha = float (3 * SMOKE_START_ALPHA / 4 + randN (SMOKE_START_ALPHA / 2)) / 255.0f;
}
}
if (m_bBlowUp && !m_bBright) {
fBrightness = 1.0f - fBrightness;
m_color [0].alpha += fBrightness * fBrightness / 8.0f;
}
}
}
#if 0
if (nType == FIRE_PARTICLES)
nSpeed = int (sqrt (double (nSpeed)) * float (I2X (1)));
else
#endif
nSpeed *= I2X (1);
if (!vDir) {
m_vDrift [X] = nSpeed - randN (2 * nSpeed);
m_vDrift [Y] = nSpeed - randN (2 * nSpeed);
m_vDrift [Z] = nSpeed - randN (2 * nSpeed);
m_vDir.SetZero ();
m_bHaveDir = 1;
}
else {
m_vDir = *vDir;
CAngleVector a;
CFixMatrix m;
a [PA] = randN (I2X (1) / 4) - I2X (1) / 8;
a [BA] = randN (I2X (1) / 4) - I2X (1) / 8;
a [HA] = randN (I2X (1) / 4) - I2X (1) / 8;
m = CFixMatrix::Create (a);
if (nType == WATERFALL_PARTICLES)
CFixVector::Normalize (m_vDir);
m_vDrift = m * m_vDir;
CFixVector::Normalize (m_vDrift);
if (nType == WATERFALL_PARTICLES) {
fix dot = CFixVector::Dot (m_vDir, m_vDrift);
if (dot < I2X (1) / 2)
return 0;
}
float d = float (CFixVector::DeltaAngle (m_vDrift, m_vDir, NULL));
if (d) {
d = (float) exp ((I2X (1) / 8) / d);
nSpeed = (fix) ((float) nSpeed / d);
}
m_vDrift *= nSpeed;
if (nType <= FIRE_PARTICLES)
m_vDir *= (I2X (3) / 4 + I2X (randN (16)) / 64);
#if DBG
if (CFixVector::Dot (m_vDrift, m_vDir) < 0)
d = 0;
#endif
m_bHaveDir = 1;
}
if (vEmittingFace)
m_vPos = *RandomPointOnQuad (vEmittingFace, vPos);
else if (nType != BUBBLE_PARTICLES)
m_vPos = *vPos + m_vDrift * (I2X (1) / 64);
else {
//m_vPos = *vPos + vDrift * (I2X (1) / 32);
nSpeed = m_vDrift.Mag () / 16;
CFixVector v = CFixVector::Avg ((*mOrient).RVec () * (nSpeed - randN (2 * nSpeed)), (*mOrient).UVec () * (nSpeed - randN (2 * nSpeed)));
m_vPos = *vPos + v + (*mOrient).FVec () * (I2X (1) / 2 - randN (I2X (1)));
}
if ((nType != BUBBLE_PARTICLES) && mOrient) {
CAngleVector vRot;
CFixMatrix mRot;
vRot [BA] = 0;
vRot [PA] = 2048 - ((d_rand () % 9) * 512);
vRot [HA] = 2048 - ((d_rand () % 9) * 512);
mRot = CFixMatrix::Create (vRot);
m_mOrient = *mOrient * mRot;
}
if (nType <= SMOKE_PARTICLES) {
if (m_bBlowUp)
m_nLife = 2 * m_nLife / 3;
m_nLife = 4 * m_nLife / 5 + randN (2 * m_nLife / 5);
m_nRad += float (randN (int (m_nRad)));
}
else if (nType == FIRE_PARTICLES) {
m_nLife = 3 * m_nLife / 4 + randN (m_nLife / 4);
m_nRad += float (randN (int (m_nRad)));
}
else if (nType == BUBBLE_PARTICLES)
m_nRad = m_nRad / 10 + float (randN (int (9 * m_nRad / 10)));
else
m_nRad *= 2;
//m_nRad *= 0.5f;
m_vStartPos = m_vPos;
if (m_bBlowUp) {
m_nWidth = (nType == WATERFALL_PARTICLES) ? m_nRad * 0.6666667f : m_nRad;
m_nHeight = m_nRad;
}
else {
m_nWidth = (nType == WATERFALL_PARTICLES) ? m_nRad * 0.3333333f : m_nRad * 2;
m_nHeight = m_nRad * 2;
}
m_nWidth /= 65536.0f;
m_nHeight /= 65536.0f;
m_nRad /= 65536.0f;
m_nFrames = ParticleImageInfo (nType).nFrames;
m_deltaUV = 1.0f / float (m_nFrames);
if (nType == BULLET_PARTICLES) {
m_iFrame = 0;
m_nRotFrame = 0;
m_nOrient = 3;
}
else if (nType == BUBBLE_PARTICLES) {
m_iFrame = rand () % (m_nFrames * m_nFrames);
m_nRotFrame = 0;
m_nOrient = 0;
}
else if ((nType == LIGHT_PARTICLES) /*|| (nType == WATERFALL_PARTICLES)*/) {
m_iFrame = 0;
m_nRotFrame = 0;
m_nOrient = 0;
}
else if (nType == FIRE_PARTICLES) {
m_iFrame = (rand () % 10 < 6) ? 0 : 2; // more fire than smoke (60:40)
if (m_iFrame < 2)
m_nLife = 9 * m_nLife / 10;
else
m_nLife = 10 * m_nLife / 9;
m_nRotFrame = rand () % PARTICLE_POSITIONS;
m_nOrient = rand () % 4;
}
else {
m_iFrame = rand () % (m_nFrames * m_nFrames);
m_nRotFrame = rand () % PARTICLE_POSITIONS;
m_nOrient = rand () % 4;
#if 1
#endif
}
m_nTTL = m_nLife;
m_nRenderType = RenderType ();
m_bAnimate = (nType != FIRE_PARTICLES) && (gameOpts->render.particles.nQuality > 1) && (m_nFrames > 1);
m_bRotate = (m_nRenderType <= SMOKE_PARTICLES) ? 1 : (m_nRenderType == FIRE_PARTICLES + PARTICLE_TYPES) ? -1 : 0;
UpdateDecay ();
UpdateTexCoord ();
#if 0
if (colorP && (colorP->alpha < 0))
m_color [0].alpha /= 2.0f;
else
#endif
{
if (m_bEmissive)
m_color [0].alpha = 1.0f;
else if (nParticleSystemType == SIMPLE_SMOKE_PARTICLES)
m_color [0].alpha /= 3.5f - float (gameOpts->render.particles.nQuality) / 2.0f; //colorP ? 2.0f + (color.red + color.green + color.blue) / 3.0f : 2.0f;
else if (nParticleSystemType == SMOKE_PARTICLES)
m_color [0].alpha /= colorP ? 3.0f - (color.red + color.green + color.blue) / 3.0f : 2.5f;
else if (nParticleSystemType == BUBBLE_PARTICLES)
m_color [0].alpha /= 2.0f;
else if (nParticleSystemType == GATLING_PARTICLES)
m_color [0].alpha /= 4.0f;
# if 0
else if (nParticleSystemType == GATLING_PARTICLES)
;//m_color [0].alpha /= 6;
# endif
}
SetupColor (fBrightness);
return 1;
}
