/// <summary>
/// R_LavaSplash
/// </summary>
public static void LavaSplash(ref Vector3 org)
{
Vector3 dir;
for (int i = -16; i < 16; i++)
{
for (int j = -16; j < 16; j++)
{
for (int k = 0; k < 1; k++)
{
particle_t p = AllocParticle();
if (p == null)
{
return;
}
p.die = (float)(Client.cl.time + 2 + (Sys.Random() & 31) * 0.02);
p.color = 224 + (Sys.Random() & 7);
p.type = ptype_t.pt_slowgrav;
dir.X = j * 8 + (Sys.Random() & 7);
dir.Y = i * 8 + (Sys.Random() & 7);
dir.Z = 256;
p.org = org + dir;
p.org.Z += Sys.Random() & 63;
Mathlib.Normalize(ref dir);
float vel = 50 + (Sys.Random() & 63);
p.vel = dir * vel;
}
}
}
}
/// <summary>
/// R_TeleportSplash
/// </summary>
public static void TeleportSplash(ref Vector3 org)
{
for (int i = -16; i < 16; i += 4)
{
for (int j = -16; j < 16; j += 4)
{
for (int k = -24; k < 32; k += 4)
{
particle_t p = AllocParticle();
if (p == null)
{
return;
}
p.die = (float)(Client.cl.time + 0.2 + (Sys.Random() & 7) * 0.02);
p.color = 7 + (Sys.Random() & 7);
p.type = ptype_t.pt_slowgrav;
Vector3 dir = new Vector3(j * 8, i * 8, k * 8);
p.org = org + new Vector3(i + (Sys.Random() & 3), j + (Sys.Random() & 3), k + (Sys.Random() & 3));
Mathlib.Normalize(ref dir);
float vel = 50 + (Sys.Random() & 63);
p.vel = dir * vel;
}
}
}
}
/// <summary>
/// R_BlobExplosion
/// </summary>
public static void BlobExplosion(ref Vector3 org)
{
for (int i = 0; i < 1024; i++)
{
particle_t p = AllocParticle();
if (p == null)
{
return;
}
p.die = (float)(Client.cl.time + 1 + (Sys.Random() & 8) * 0.05);
if ((i & 1) != 0)
{
p.type = ptype_t.pt_blob;
p.color = 66 + Sys.Random() % 6;
}
else
{
p.type = ptype_t.pt_blob2;
p.color = 150 + Sys.Random() % 6;
}
p.org = org + new Vector3((Sys.Random() % 32) - 16, (Sys.Random() % 32) - 16, (Sys.Random() % 32) - 16);
p.vel = new Vector3((Sys.Random() % 512) - 256, (Sys.Random() % 512) - 256, (Sys.Random() % 512) - 256);
}
}
/// <summary>
/// R_ParticleExplosion
/// </summary>
public static void ParticleExplosion(ref Vector3 org)
{
for (int i = 0; i < 1024; i++) // Uze: Why 1024 if MAX_PARTICLES = 2048?
{
particle_t p = AllocParticle();
if (p == null)
{
return;
}
p.die = (float)Client.cl.time + 5;
p.color = _Ramp1[0];
p.ramp = Sys.Random() & 3;
if ((i & 1) != 0)
{
p.type = ptype_t.pt_explode;
}
else
{
p.type = ptype_t.pt_explode2;
}
p.org = org + new Vector3((Sys.Random() % 32) - 16, (Sys.Random() % 32) - 16, (Sys.Random() % 32) - 16);
p.vel = new Vector3((Sys.Random() % 512) - 256, (Sys.Random() % 512) - 256, (Sys.Random() % 512) - 256);
}
}
static void R_ClearParticles()
{
free_particles = _Particles[0];
active_particles = null;
for (int i = 0; i < r_numparticles - 1; i++)
{
_Particles[i].next = _Particles[i + 1];
}
_Particles[r_numparticles - 1].next = null;
}
/// <summary>
/// R_ClearParticles
/// </summary>
static void ClearParticles()
{
_FreeParticles = _Particles[0];
_ActiveParticles = null;
for (int i = 0; i < _NumParticles - 1; i++)
{
_Particles[i].next = _Particles[i + 1];
}
_Particles[_NumParticles - 1].next = null;
}
private static particle_t AllocParticle()
{
if (_FreeParticles == null)
{
return(null);
}
particle_t p = _FreeParticles;
_FreeParticles = p.next;
p.next = _ActiveParticles;
_ActiveParticles = p;
return(p);
}
private static particle_t AllocParticle()
{
if (free_particles == null)
{
return(null);
}
particle_t p = free_particles;
free_particles = p.next;
p.next = active_particles;
active_particles = p;
return(p);
}
/// <summary>
/// R_ParticleExplosion2
/// </summary>
public static void ParticleExplosion(ref Vector3 org, int colorStart, int colorLength)
{
int colorMod = 0;
for (int i = 0; i < 512; i++)
{
particle_t p = AllocParticle();
if (p == null)
{
return;
}
p.die = (float)(Client.cl.time + 0.3);
p.color = colorStart + (colorMod % colorLength);
colorMod++;
p.type = ptype_t.pt_blob;
p.org = org + new Vector3((Sys.Random() % 32) - 16, (Sys.Random() % 32) - 16, (Sys.Random() % 32) - 16);
p.vel = new Vector3((Sys.Random() % 512) - 256, (Sys.Random() % 512) - 256, (Sys.Random() % 512) - 256);
}
}
public static void R_EntityParticles(entity_t ent)
{
float dist = 64;
if (avelocities[0].X == 0)
{
for (int i = 0; i < q_shared.NUMVERTEXNORMALS; i++)
{
avelocities[i].X = (Random() & 255) * 0.01f;
avelocities[i].Y = (Random() & 255) * 0.01f;
avelocities[i].Z = (Random() & 255) * 0.01f;
}
}
for (int i = 0; i < q_shared.NUMVERTEXNORMALS; i++)
{
double angle = cl.time * avelocities[i].X;
double sy = Math.Sin(angle);
double cy = Math.Cos(angle);
angle = cl.time * avelocities[i].Y;
double sp = Math.Sin(angle);
double cp = Math.Cos(angle);
angle = cl.time * avelocities[i].Z;
double sr = Math.Sin(angle);
double cr = Math.Cos(angle);
Vector3 forward = new Vector3((float)(cp * cy), (float)(cp * sy), (float)-sp);
particle_t p = AllocParticle();
if (p == null)
{
return;
}
p.die = (float)(cl.time + 0.01);
p.color = 0x6f;
p.type = ptype_t.pt_explode;
p.org = ent.origin + anorms[i] * dist + forward * beamlength;
}
}
/// <summary>
/// R_EntityParticles
/// </summary>
public static void EntityParticles(entity_t ent)
{
float dist = 64;
if (_AVelocities[0].X == 0)
{
for (int i = 0; i < NUMVERTEXNORMALS; i++)
{
_AVelocities[i].X = (Sys.Random() & 255) * 0.01f;
_AVelocities[i].Y = (Sys.Random() & 255) * 0.01f;
_AVelocities[i].Z = (Sys.Random() & 255) * 0.01f;
}
}
for (int i = 0; i < NUMVERTEXNORMALS; i++)
{
double angle = Client.cl.time * _AVelocities[i].X;
double sy = Math.Sin(angle);
double cy = Math.Cos(angle);
angle = Client.cl.time * _AVelocities[i].Y;
double sp = Math.Sin(angle);
double cp = Math.Cos(angle);
angle = Client.cl.time * _AVelocities[i].Z;
double sr = Math.Sin(angle);
double cr = Math.Cos(angle);
Vector3 forward = new Vector3((float)(cp * cy), (float)(cp * sy), (float)-sp);
particle_t p = AllocParticle();
if (p == null)
{
return;
}
p.die = (float)(Client.cl.time + 0.01);
p.color = 0x6f;
p.type = ptype_t.pt_explode;
p.org = ent.origin + Anorms.Values[i] * dist + forward * _BeamLength;
}
}
static void R_InitParticles()
{
int i = COM_CheckParm("-particles");
if (i > 0 && i < com_argv.Length - 1)
{
r_numparticles = int.Parse(Argv(i + 1));
if (r_numparticles < q_shared.ABSOLUTE_MIN_PARTICLES)
{
r_numparticles = q_shared.ABSOLUTE_MIN_PARTICLES;
}
}
else
{
r_numparticles = q_shared.MAX_PARTICLES;
}
_Particles = new particle_t[r_numparticles];
for (i = 0; i < r_numparticles; i++)
{
_Particles[i] = new particle_t();
}
}
static float _BeamLength = 16; // beamlength
// R_InitParticles
static void InitParticles()
{
int i = Common.CheckParm("-particles");
if (i > 0 && i < Common.Argc - 1)
{
_NumParticles = int.Parse(Common.Argv(i + 1));
if (_NumParticles < ABSOLUTE_MIN_PARTICLES)
{
_NumParticles = ABSOLUTE_MIN_PARTICLES;
}
}
else
{
_NumParticles = MAX_PARTICLES;
}
_Particles = new particle_t[_NumParticles];
for (i = 0; i < _NumParticles; i++)
{
_Particles[i] = new particle_t();
}
}
/// <summary>
/// R_RunParticleEffect
/// </summary>
public static void RunParticleEffect(ref Vector3 org, ref Vector3 dir, int color, int count)
{
for (int i = 0; i < count; i++)
{
particle_t p = AllocParticle();
if (p == null)
{
return;
}
if (count == 1024)
{ // rocket explosion
p.die = (float)Client.Cl.time + 5;
p.color = _Ramp1[0];
p.ramp = Sys.Random() & 3;
if ((i & 1) != 0)
{
p.type = ptype_t.pt_explode;
}
else
{
p.type = ptype_t.pt_explode2;
}
p.org = org + new Vector3((Sys.Random() % 32) - 16, (Sys.Random() % 32) - 16, (Sys.Random() % 32) - 16);
p.vel = new Vector3((Sys.Random() % 512) - 256, (Sys.Random() % 512) - 256, (Sys.Random() % 512) - 256);
}
else
{
p.die = (float)Client.Cl.time + 0.1f * (Sys.Random() % 5);
p.color = (color & ~7) + (Sys.Random() & 7);
p.type = ptype_t.pt_slowgrav;
p.org = org + new Vector3((Sys.Random() & 15) - 8, (Sys.Random() & 15) - 8, (Sys.Random() & 15) - 8);
p.vel = dir * 15.0f;
}
}
}
/// <summary>
/// R_RocketTrail
/// </summary>
public static void RocketTrail(ref Vector3 start, ref Vector3 end, int type)
{
Vector3 vec = end - start;
float len = Mathlib.Normalize(ref vec);
int dec;
if (type < 128)
{
dec = 3;
}
else
{
dec = 1;
type -= 128;
}
while (len > 0)
{
len -= dec;
particle_t p = AllocParticle();
if (p == null)
{
return;
}
p.vel = Vector3.Zero;
p.die = (float)Client.cl.time + 2;
switch (type)
{
case 0: // rocket trail
p.ramp = (Sys.Random() & 3);
p.color = _Ramp3[(int)p.ramp];
p.type = ptype_t.pt_fire;
p.org = new Vector3(start.X + ((Sys.Random() % 6) - 3),
start.Y + ((Sys.Random() % 6) - 3), start.Z + ((Sys.Random() % 6) - 3));
break;
case 1: // smoke smoke
p.ramp = (Sys.Random() & 3) + 2;
p.color = _Ramp3[(int)p.ramp];
p.type = ptype_t.pt_fire;
p.org = new Vector3(start.X + ((Sys.Random() % 6) - 3),
start.Y + ((Sys.Random() % 6) - 3), start.Z + ((Sys.Random() % 6) - 3));
break;
case 2: // blood
p.type = ptype_t.pt_grav;
p.color = 67 + (Sys.Random() & 3);
p.org = new Vector3(start.X + ((Sys.Random() % 6) - 3),
start.Y + ((Sys.Random() % 6) - 3), start.Z + ((Sys.Random() % 6) - 3));
break;
case 3:
case 5: // tracer
p.die = (float)Client.cl.time + 0.5f;
p.type = ptype_t.pt_static;
if (type == 3)
{
p.color = 52 + ((_TracerCount & 4) << 1);
}
else
{
p.color = 230 + ((_TracerCount & 4) << 1);
}
_TracerCount++;
p.org = start;
if ((_TracerCount & 1) != 0)
{
p.vel.X = 30 * vec.Y; // Uze: why???
p.vel.Y = 30 * -vec.X;
}
else
{
p.vel.X = 30 * -vec.Y;
p.vel.Y = 30 * vec.X;
}
break;
case 4: // slight blood
p.type = ptype_t.pt_grav;
p.color = 67 + (Sys.Random() & 3);
p.org = new Vector3(start.X + ((Sys.Random() % 6) - 3),
start.Y + ((Sys.Random() % 6) - 3), start.Z + ((Sys.Random() % 6) - 3));
len -= 3;
break;
case 6: // voor trail
p.color = 9 * 16 + 8 + (Sys.Random() & 3);
p.type = ptype_t.pt_static;
p.die = (float)Client.cl.time + 0.3f;
p.org = new Vector3(start.X + ((Sys.Random() % 15) - 8),
start.Y + ((Sys.Random() % 15) - 8), start.Z + ((Sys.Random() % 15) - 8));
break;
}
start += vec;
}
}
/// <summary>
/// R_DrawParticles
/// </summary>
private static void DrawParticles()
{
Drawer.Bind(_ParticleTexture);
GL.Enable(EnableCap.Blend);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Modulate);
GL.Begin(BeginMode.Triangles);
Vector3 up = Render.ViewUp * 1.5f;
Vector3 right = Render.ViewRight * 1.5f;
float frametime = (float)(Client.cl.time - Client.cl.oldtime);
float time3 = frametime * 15;
float time2 = frametime * 10;
float time1 = frametime * 5;
float grav = frametime * Server.Gravity * 0.05f;
float dvel = 4 * frametime;
while (true)
{
particle_t kill = _ActiveParticles;
if (kill != null && kill.die < Client.cl.time)
{
_ActiveParticles = kill.next;
kill.next = _FreeParticles;
_FreeParticles = kill;
continue;
}
break;
}
for (particle_t p = _ActiveParticles; p != null; p = p.next)
{
while (true)
{
particle_t kill = p.next;
if (kill != null && kill.die < Client.cl.time)
{
p.next = kill.next;
kill.next = _FreeParticles;
_FreeParticles = kill;
continue;
}
break;
}
// hack a scale up to keep particles from disapearing
float scale = Vector3.Dot((p.org - Render.Origin), Render.ViewPn);
if (scale < 20)
scale = 1;
else
scale = 1 + scale * 0.004f;
// Uze todo: check if this is correct
uint color = Vid.Table8to24[(byte)p.color];
GL.Color4((byte)(color & 0xff), (byte)((color >> 8) & 0xff), (byte)((color >> 16) & 0xff), (byte)((color >> 24) & 0xff));
GL.TexCoord2(0f, 0);
GL.Vertex3(p.org);
GL.TexCoord2(1f, 0);
Vector3 v = p.org + up * scale;
GL.Vertex3(v);
GL.TexCoord2(0f, 1);
v = p.org + right * scale;
GL.Vertex3(v);
p.org += p.vel * frametime;
switch (p.type)
{
case ptype_t.pt_static:
break;
case ptype_t.pt_fire:
p.ramp += time1;
if (p.ramp >= 6)
p.die = -1;
else
p.color = _Ramp3[(int)p.ramp];
p.vel.Z += grav;
break;
case ptype_t.pt_explode:
p.ramp += time2;
if (p.ramp >= 8)
p.die = -1;
else
p.color = _Ramp1[(int)p.ramp];
p.vel += p.vel * dvel;
p.vel.Z -= grav;
break;
case ptype_t.pt_explode2:
p.ramp += time3;
if (p.ramp >= 8)
p.die = -1;
else
p.color = _Ramp2[(int)p.ramp];
p.vel -= p.vel * frametime;
p.vel.Z -= grav;
break;
case ptype_t.pt_blob:
p.vel += p.vel * dvel;
p.vel.Z -= grav;
break;
case ptype_t.pt_blob2:
p.vel -= p.vel * dvel;
p.vel.Z -= grav;
break;
case ptype_t.pt_grav:
case ptype_t.pt_slowgrav:
p.vel.Z -= grav;
break;
}
}
GL.End();
GL.Disable(EnableCap.Blend);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Replace);
}
// R_InitParticles
static void InitParticles()
{
int i = Common.CheckParm("-particles");
if (i > 0 && i < Common.Argc - 1)
{
_NumParticles = int.Parse(Common.Argv(i + 1));
if (_NumParticles < ABSOLUTE_MIN_PARTICLES)
_NumParticles = ABSOLUTE_MIN_PARTICLES;
}
else
_NumParticles = MAX_PARTICLES;
_Particles = new particle_t[_NumParticles];
for (i = 0; i < _NumParticles; i++)
_Particles[i] = new particle_t();
}
/*
* ==============
* D_DrawParticle
* ==============
*/
public static void D_DrawParticle(particle_t pparticle)
{
double[] local = new double[3], transformed = new double[3];
double zi;
int pdest;
int pz;
int i, izi, pix, count, u, v;
// transform point
mathlib.VectorSubtract(pparticle.org, render.r_origin, ref local);
transformed[0] = mathlib.DotProduct(local, render.r_pright);
transformed[1] = mathlib.DotProduct(local, render.r_pup);
transformed[2] = mathlib.DotProduct(local, render.r_ppn);
if (transformed[2] < PARTICLE_Z_CLIP)
{
return;
}
// project the point
// FIXME: preadjust xcenter and ycenter
zi = 1.0 / transformed[2];
u = (int)(render.xcenter + zi * transformed[0] + 0.5);
v = (int)(render.ycenter - zi * transformed[1] + 0.5);
if ((v > d_vrectbottom_particle) ||
(u > d_vrectright_particle) ||
(v < d_vrecty) ||
(u < d_vrectx))
{
return;
}
pz = (int)((d_zwidth * v) + u);
pdest = d_scantable[v] + u;
izi = (int)(zi * 0x8000);
pix = izi >> d_pix_shift;
if (pix < d_pix_min)
{
pix = d_pix_min;
}
else if (pix > d_pix_max)
{
pix = d_pix_max;
}
switch (pix)
{
case 1:
count = 1 << d_y_aspect_shift;
for ( ; count != 0; count--, pz += (int)d_zwidth, pdest += screenwidth)
{
if (d_pzbuffer[pz + 0] <= izi)
{
d_pzbuffer[pz + 0] = (short)izi;
d_viewbuffer[pdest + 0] = (byte)pparticle.color;
}
}
break;
case 2:
count = 2 << d_y_aspect_shift;
for ( ; count != 0; count--, pz += (int)d_zwidth, pdest += screenwidth)
{
if (d_pzbuffer[pz + 0] <= izi)
{
d_pzbuffer[pz + 0] = (short)izi;
d_viewbuffer[pdest + 0] = (byte)pparticle.color;
}
if (d_pzbuffer[pz + 1] <= izi)
{
d_pzbuffer[pz + 1] = (short)izi;
d_viewbuffer[pdest + 1] = (byte)pparticle.color;
}
}
break;
case 3:
count = 3 << d_y_aspect_shift;
for ( ; count != 0; count--, pz += (int)d_zwidth, pdest += screenwidth)
{
if (d_pzbuffer[pz + 0] <= izi)
{
d_pzbuffer[pz + 0] = (short)izi;
d_viewbuffer[pdest + 0] = (byte)pparticle.color;
}
if (d_pzbuffer[pz + 1] <= izi)
{
d_pzbuffer[pz + 1] = (short)izi;
d_viewbuffer[pdest + 1] = (byte)pparticle.color;
}
if (d_pzbuffer[pz + 2] <= izi)
{
d_pzbuffer[pz + 2] = (short)izi;
d_viewbuffer[pdest + 2] = (byte)pparticle.color;
}
}
break;
case 4:
count = 4 << d_y_aspect_shift;
for ( ; count != 0; count--, pz += (int)d_zwidth, pdest += screenwidth)
{
if (d_pzbuffer[pz + 0] <= izi)
{
d_pzbuffer[pz + 0] = (short)izi;
d_viewbuffer[pdest + 0] = (byte)pparticle.color;
}
if (d_pzbuffer[pz + 1] <= izi)
{
d_pzbuffer[pz + 1] = (short)izi;
d_viewbuffer[pdest + 1] = (byte)pparticle.color;
}
if (d_pzbuffer[pz + 2] <= izi)
{
d_pzbuffer[pz + 2] = (short)izi;
d_viewbuffer[pdest + 2] = (byte)pparticle.color;
}
if (d_pzbuffer[pz + 3] <= izi)
{
d_pzbuffer[pz + 3] = (short)izi;
d_viewbuffer[pdest + 3] = (byte)pparticle.color;
}
}
break;
default:
count = pix << d_y_aspect_shift;
for ( ; count != 0; count--, pz += (int)d_zwidth, pdest += screenwidth)
{
for (i = 0; i < pix; i++)
{
if (d_pzbuffer[pz + i] <= izi)
{
d_pzbuffer[pz + i] = (short)izi;
d_viewbuffer[pdest + i] = (byte)pparticle.color;
}
}
}
break;
}
}
/// <summary>
/// R_DrawParticles
/// </summary>
private static void DrawParticles()
{
Drawer.Bind(_ParticleTexture);
GL.Enable(EnableCap.Blend);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Modulate);
GL.Begin(BeginMode.Triangles);
Vector3 up = Render.ViewUp * 1.5f;
Vector3 right = Render.ViewRight * 1.5f;
float frametime = (float)(Client.cl.time - Client.cl.oldtime);
float time3 = frametime * 15;
float time2 = frametime * 10;
float time1 = frametime * 5;
float grav = frametime * Server.Gravity * 0.05f;
float dvel = 4 * frametime;
while (true)
{
particle_t kill = _ActiveParticles;
if (kill != null && kill.die < Client.cl.time)
{
_ActiveParticles = kill.next;
kill.next = _FreeParticles;
_FreeParticles = kill;
continue;
}
break;
}
for (particle_t p = _ActiveParticles; p != null; p = p.next)
{
while (true)
{
particle_t kill = p.next;
if (kill != null && kill.die < Client.cl.time)
{
p.next = kill.next;
kill.next = _FreeParticles;
_FreeParticles = kill;
continue;
}
break;
}
// hack a scale up to keep particles from disapearing
float scale = Vector3.Dot((p.org - Render.Origin), Render.ViewPn);
if (scale < 20)
{
scale = 1;
}
else
{
scale = 1 + scale * 0.004f;
}
// Uze todo: check if this is correct
uint color = Vid.Table8to24[(byte)p.color];
GL.Color4((byte)(color & 0xff), (byte)((color >> 8) & 0xff), (byte)((color >> 16) & 0xff), (byte)((color >> 24) & 0xff));
GL.TexCoord2(0f, 0);
GL.Vertex3(p.org);
GL.TexCoord2(1f, 0);
Vector3 v = p.org + up * scale;
GL.Vertex3(v);
GL.TexCoord2(0f, 1);
v = p.org + right * scale;
GL.Vertex3(v);
p.org += p.vel * frametime;
switch (p.type)
{
case ptype_t.pt_static:
break;
case ptype_t.pt_fire:
p.ramp += time1;
if (p.ramp >= 6)
{
p.die = -1;
}
else
{
p.color = _Ramp3[(int)p.ramp];
}
p.vel.Z += grav;
break;
case ptype_t.pt_explode:
p.ramp += time2;
if (p.ramp >= 8)
{
p.die = -1;
}
else
{
p.color = _Ramp1[(int)p.ramp];
}
p.vel += p.vel * dvel;
p.vel.Z -= grav;
break;
case ptype_t.pt_explode2:
p.ramp += time3;
if (p.ramp >= 8)
{
p.die = -1;
}
else
{
p.color = _Ramp2[(int)p.ramp];
}
p.vel -= p.vel * frametime;
p.vel.Z -= grav;
break;
case ptype_t.pt_blob:
p.vel += p.vel * dvel;
p.vel.Z -= grav;
break;
case ptype_t.pt_blob2:
p.vel -= p.vel * dvel;
p.vel.Z -= grav;
break;
case ptype_t.pt_grav:
case ptype_t.pt_slowgrav:
p.vel.Z -= grav;
break;
}
}
GL.End();
GL.Disable(EnableCap.Blend);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Replace);
}
/// <summary>
/// R_ClearParticles
/// </summary>
static void ClearParticles()
{
_FreeParticles = _Particles[0];
_ActiveParticles = null;
for (int i = 0; i < _NumParticles - 1; i++)
_Particles[i].next = _Particles[i + 1];
_Particles[_NumParticles - 1].next = null;
}
/*
==============
D_DrawParticle
==============
*/
public static void D_DrawParticle(particle_t pparticle)
{
double[] local = new double[3] {0, 0, 0}, transformed = new double[3] {0, 0, 0};
double zi;
int pdest;
int pz;
int i, izi, pix, count, u, v;
// transform point
mathlib.VectorSubtract (pparticle.org, render.r_origin, local);
transformed[0] = mathlib.DotProduct(local, render.r_pright);
transformed[1] = mathlib.DotProduct(local, render.r_pup);
transformed[2] = mathlib.DotProduct(local, render.r_ppn);
if (transformed[2] < PARTICLE_Z_CLIP)
return;
// project the point
// FIXME: preadjust xcenter and ycenter
zi = 1.0 / transformed[2];
u = (int)(render.xcenter + zi * transformed[0] + 0.5);
v = (int)(render.ycenter - zi * transformed[1] + 0.5);
if ((v > d_vrectbottom_particle) ||
(u > d_vrectright_particle) ||
(v < d_vrecty) ||
(u < d_vrectx))
{
return;
}
pz = (int)((d_zwidth * v) + u);
pdest = d_scantable[v] + u;
izi = (int)(zi * 0x8000);
pix = izi >> d_pix_shift;
if (pix < d_pix_min)
pix = d_pix_min;
else if (pix > d_pix_max)
pix = d_pix_max;
switch (pix)
{
case 1:
count = 1 << d_y_aspect_shift;
for ( ; count != 0 ; count--, pz += (int)d_zwidth, pdest += screenwidth)
{
if (d_pzbuffer[pz+0] <= izi)
{
d_pzbuffer[pz+0] = (short)izi;
d_viewbuffer[pdest+0] = (byte)pparticle.color;
}
}
break;
case 2:
count = 2 << d_y_aspect_shift;
for ( ; count != 0 ; count--, pz += (int)d_zwidth, pdest += screenwidth)
{
if (d_pzbuffer[pz+0] <= izi)
{
d_pzbuffer[pz+0] = (short)izi;
d_viewbuffer[pdest+0] = (byte)pparticle.color;
}
if (d_pzbuffer[pz+1] <= izi)
{
d_pzbuffer[pz+1] = (short)izi;
d_viewbuffer[pdest+1] = (byte)pparticle.color;
}
}
break;
case 3:
count = 3 << d_y_aspect_shift;
for ( ; count != 0 ; count--, pz += (int)d_zwidth, pdest += screenwidth)
{
if (d_pzbuffer[pz+0] <= izi)
{
d_pzbuffer[pz+0] = (short)izi;
d_viewbuffer[pdest+0] = (byte)pparticle.color;
}
if (d_pzbuffer[pz+1] <= izi)
{
d_pzbuffer[pz+1] = (short)izi;
d_viewbuffer[pdest+1] = (byte)pparticle.color;
}
if (d_pzbuffer[pz+2] <= izi)
{
d_pzbuffer[pz+2] = (short)izi;
d_viewbuffer[pdest+2] = (byte)pparticle.color;
}
}
break;
case 4:
count = 4 << d_y_aspect_shift;
for ( ; count != 0 ; count--, pz += (int)d_zwidth, pdest += screenwidth)
{
if (d_pzbuffer[pz+0] <= izi)
{
d_pzbuffer[pz+0] = (short)izi;
d_viewbuffer[pdest+0] = (byte)pparticle.color;
}
if (d_pzbuffer[pz+1] <= izi)
{
d_pzbuffer[pz+1] = (short)izi;
d_viewbuffer[pdest+1] = (byte)pparticle.color;
}
if (d_pzbuffer[pz+2] <= izi)
{
d_pzbuffer[pz+2] = (short)izi;
d_viewbuffer[pdest+2] = (byte)pparticle.color;
}
if (d_pzbuffer[pz+3] <= izi)
{
d_pzbuffer[pz+3] = (short)izi;
d_viewbuffer[pdest+3] = (byte)pparticle.color;
}
}
break;
default:
count = pix << d_y_aspect_shift;
for ( ; count != 0 ; count--, pz += (int)d_zwidth, pdest += screenwidth)
{
for (i=0 ; i<pix ; i++)
{
if (d_pzbuffer[pz+i] <= izi)
{
d_pzbuffer[pz+i] = (short)izi;
d_viewbuffer[pdest+i] = (byte)pparticle.color;
}
}
}
break;
}
}
private static particle_t AllocParticle()
{
if (_FreeParticles == null)
return null;
particle_t p = _FreeParticles;
_FreeParticles = p.next;
p.next = _ActiveParticles;
_ActiveParticles = p;
return p;
}