307 lines
8.5 KiB
307 lines
8.5 KiB
/* |
|
cl_part.c - particles and tracers |
|
Copyright (C) 2010 Uncle Mike |
|
|
|
This program is free software: you can redistribute it and/or modify |
|
it under the terms of the GNU General Public License as published by |
|
the Free Software Foundation, either version 3 of the License, or |
|
(at your option) any later version. |
|
|
|
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. See the |
|
GNU General Public License for more details. |
|
*/ |
|
|
|
#include "r_local.h" |
|
#include "r_efx.h" |
|
#include "event_flags.h" |
|
#include "entity_types.h" |
|
#include "triangleapi.h" |
|
#include "pm_local.h" |
|
#include "studio.h" |
|
|
|
static float gTracerSize[11] = { 1.5f, 0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f }; |
|
static color24 gTracerColors[] = |
|
{ |
|
{ 255, 255, 255 }, // White |
|
{ 255, 0, 0 }, // Red |
|
{ 0, 255, 0 }, // Green |
|
{ 0, 0, 255 }, // Blue |
|
{ 0, 0, 0 }, // Tracer default, filled in from cvars, etc. |
|
{ 255, 167, 17 }, // Yellow-orange sparks |
|
{ 255, 130, 90 }, // Yellowish streaks (garg) |
|
{ 55, 60, 144 }, // Blue egon streak |
|
{ 255, 130, 90 }, // More Yellowish streaks (garg) |
|
{ 255, 140, 90 }, // More Yellowish streaks (garg) |
|
{ 200, 130, 90 }, // More red streaks (garg) |
|
{ 255, 120, 70 }, // Darker red streaks (garg) |
|
}; |
|
|
|
/* |
|
================ |
|
CL_DrawParticles |
|
|
|
update particle color, position, free expired and draw it |
|
================ |
|
*/ |
|
void GAME_EXPORT CL_DrawParticles( double frametime, particle_t *cl_active_particles, float partsize ) |
|
{ |
|
particle_t *p; |
|
vec3_t right, up; |
|
color24 *pColor; |
|
int alpha; |
|
float size; |
|
|
|
if( !cl_active_particles ) |
|
return; // nothing to draw? |
|
|
|
//pglEnable( GL_BLEND ); |
|
//pglDisable( GL_ALPHA_TEST ); |
|
//pglBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ); |
|
GL_SetRenderMode( kRenderTransAdd ); |
|
|
|
GL_Bind( XASH_TEXTURE0, tr.particleTexture ); |
|
//pglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); |
|
//pglDepthMask( GL_FALSE ); |
|
|
|
for( p = cl_active_particles; p; p = p->next ) |
|
{ |
|
if(( p->type != pt_blob ) || ( p->packedColor == 255 )) |
|
{ |
|
size = partsize; // get initial size of particle |
|
|
|
// scale up to keep particles from disappearing |
|
size += (p->org[0] - RI.vieworg[0]) * RI.cull_vforward[0]; |
|
size += (p->org[1] - RI.vieworg[1]) * RI.cull_vforward[1]; |
|
size += (p->org[2] - RI.vieworg[2]) * RI.cull_vforward[2]; |
|
|
|
if( size < 20.0f ) size = partsize; |
|
else size = partsize + size * 0.002f; |
|
|
|
// scale the axes by radius |
|
VectorScale( RI.cull_vright, size, right ); |
|
VectorScale( RI.cull_vup, size, up ); |
|
|
|
p->color = bound( 0, p->color, 255 ); |
|
pColor = gEngfuncs.CL_GetPaletteColor( p->color ); |
|
|
|
alpha = 255 * (p->die - gpGlobals->time) * 16.0f; |
|
if( alpha > 255 || p->type == pt_static ) |
|
alpha = 255; |
|
|
|
//TriColor4ub( gEngfuncs.LightToTexGamma( pColor->r ), |
|
// gEngfuncs.LightToTexGamma( pColor->g ), |
|
// gEngfuncs.LightToTexGamma( pColor->b ), alpha ); |
|
//TriBrightness( alpha / 255.0f ); |
|
_TriColor4f(1.0f*alpha/255/255*pColor->r,1.0f*alpha/255/255*pColor->g,1.0f*alpha/255/255* pColor->b,1.0f ); |
|
|
|
TriBegin( TRI_QUADS ); |
|
TriTexCoord2f( 0.0f, 1.0f ); |
|
TriVertex3f( p->org[0] - right[0] + up[0], p->org[1] - right[1] + up[1], p->org[2] - right[2] + up[2] ); |
|
TriTexCoord2f( 0.0f, 0.0f ); |
|
TriVertex3f( p->org[0] + right[0] + up[0], p->org[1] + right[1] + up[1], p->org[2] + right[2] + up[2] ); |
|
TriTexCoord2f( 1.0f, 0.0f ); |
|
TriVertex3f( p->org[0] + right[0] - up[0], p->org[1] + right[1] - up[1], p->org[2] + right[2] - up[2] ); |
|
TriTexCoord2f( 1.0f, 1.0f ); |
|
TriVertex3f( p->org[0] - right[0] - up[0], p->org[1] - right[1] - up[1], p->org[2] - right[2] - up[2] ); |
|
TriEnd(); |
|
r_stats.c_particle_count++; |
|
} |
|
|
|
gEngfuncs.CL_ThinkParticle( frametime, p ); |
|
} |
|
|
|
TriEnd(); |
|
//pglDepthMask( GL_TRUE ); |
|
} |
|
|
|
/* |
|
================ |
|
CL_CullTracer |
|
|
|
check tracer bbox |
|
================ |
|
*/ |
|
static qboolean CL_CullTracer( particle_t *p, const vec3_t start, const vec3_t end ) |
|
{ |
|
vec3_t mins, maxs; |
|
int i; |
|
return false; |
|
/* |
|
// compute the bounding box |
|
for( i = 0; i < 3; i++ ) |
|
{ |
|
if( start[i] < end[i] ) |
|
{ |
|
mins[i] = start[i]; |
|
maxs[i] = end[i]; |
|
} |
|
else |
|
{ |
|
mins[i] = end[i]; |
|
maxs[i] = start[i]; |
|
} |
|
|
|
// don't let it be zero sized |
|
if( mins[i] == maxs[i] ) |
|
{ |
|
maxs[i] += gTracerSize[p->type] * 2.0f; |
|
} |
|
} |
|
|
|
// check bbox |
|
return R_CullBox( mins, maxs );*/ |
|
} |
|
|
|
/* |
|
================ |
|
CL_DrawTracers |
|
|
|
update tracer color, position, free expired and draw it |
|
================ |
|
*/ |
|
void GAME_EXPORT CL_DrawTracers( double frametime, particle_t *cl_active_tracers ) |
|
{ |
|
float scale, atten, gravity; |
|
vec3_t screenLast, screen; |
|
vec3_t start, end, delta; |
|
particle_t *p; |
|
|
|
// update tracer color if this is changed |
|
if( FBitSet( tracerred->flags|tracergreen->flags|tracerblue->flags|traceralpha->flags, FCVAR_CHANGED )) |
|
{ |
|
color24 *customColors = &gTracerColors[4]; |
|
customColors->r = (byte)(tracerred->value * traceralpha->value * 255); |
|
customColors->g = (byte)(tracergreen->value * traceralpha->value * 255); |
|
customColors->b = (byte)(tracerblue->value * traceralpha->value * 255); |
|
ClearBits( tracerred->flags, FCVAR_CHANGED ); |
|
ClearBits( tracergreen->flags, FCVAR_CHANGED ); |
|
ClearBits( tracerblue->flags, FCVAR_CHANGED ); |
|
ClearBits( traceralpha->flags, FCVAR_CHANGED ); |
|
} |
|
|
|
if( !cl_active_tracers ) |
|
return; // nothing to draw? |
|
|
|
GL_SetRenderMode( kRenderTransAdd ); |
|
|
|
if( !TriSpriteTexture( gEngfuncs.GetDefaultSprite( REF_DOT_SPRITE ), 0 )) |
|
return; |
|
|
|
//pglEnable( GL_BLEND ); |
|
//pglBlendFunc( GL_SRC_ALPHA, GL_ONE ); |
|
//pglDisable( GL_ALPHA_TEST ); |
|
//pglDepthMask( GL_FALSE ); |
|
|
|
gravity = frametime * MOVEVARS->gravity; |
|
scale = 1.0 - (frametime * 0.9); |
|
if( scale < 0.0f ) scale = 0.0f; |
|
|
|
for( p = cl_active_tracers; p; p = p->next ) |
|
{ |
|
atten = (p->die - gpGlobals->time); |
|
if( atten > 0.1f ) atten = 0.1f; |
|
|
|
VectorScale( p->vel, ( p->ramp * atten ), delta ); |
|
VectorAdd( p->org, delta, end ); |
|
VectorCopy( p->org, start ); |
|
|
|
if( !CL_CullTracer( p, start, end )) |
|
{ |
|
vec3_t verts[4], tmp2; |
|
vec3_t tmp, normal; |
|
color24 *pColor; |
|
short alpha = p->packedColor; |
|
|
|
// Transform point into screen space |
|
TriWorldToScreen( start, screen ); |
|
TriWorldToScreen( end, screenLast ); |
|
|
|
// build world-space normal to screen-space direction vector |
|
VectorSubtract( screen, screenLast, tmp ); |
|
|
|
// we don't need Z, we're in screen space |
|
tmp[2] = 0; |
|
VectorNormalize( tmp ); |
|
|
|
// build point along noraml line (normal is -y, x) |
|
VectorScale( RI.cull_vup, tmp[0] * gTracerSize[p->type], normal ); |
|
VectorScale( RI.cull_vright, -tmp[1] * gTracerSize[p->type], tmp2 ); |
|
VectorSubtract( normal, tmp2, normal ); |
|
|
|
// compute four vertexes |
|
VectorSubtract( start, normal, verts[0] ); |
|
VectorAdd( start, normal, verts[1] ); |
|
VectorAdd( verts[0], delta, verts[2] ); |
|
VectorAdd( verts[1], delta, verts[3] ); |
|
|
|
if( p->color > sizeof( gTracerColors ) / sizeof( color24 ) ) |
|
{ |
|
gEngfuncs.Con_Printf( S_ERROR "UserTracer with color > %d\n", sizeof( gTracerColors ) / sizeof( color24 )); |
|
p->color = 0; |
|
} |
|
|
|
pColor = &gTracerColors[p->color]; |
|
//TriColor4ub( pColor->r, pColor->g, pColor->b, p->packedColor ); |
|
_TriColor4f(1.0f*alpha/255/255*pColor->r,1.0f*alpha/255/255*pColor->g,1.0f*alpha/255/255* pColor->b,1.0f ); |
|
|
|
|
|
TriBegin( TRI_QUADS ); |
|
TriTexCoord2f( 0.0f, 0.8f ); |
|
TriVertex3fv( verts[2] ); |
|
TriTexCoord2f( 1.0f, 0.8f ); |
|
TriVertex3fv( verts[3] ); |
|
TriTexCoord2f( 1.0f, 0.0f ); |
|
TriVertex3fv( verts[1] ); |
|
TriTexCoord2f( 0.0f, 0.0f ); |
|
TriVertex3fv( verts[0] ); |
|
TriEnd(); |
|
} |
|
|
|
// evaluate position |
|
VectorMA( p->org, frametime, p->vel, p->org ); |
|
|
|
if( p->type == pt_grav ) |
|
{ |
|
p->vel[0] *= scale; |
|
p->vel[1] *= scale; |
|
p->vel[2] -= gravity; |
|
|
|
p->packedColor = 255 * (p->die - gpGlobals->time) * 2; |
|
if( p->packedColor > 255 ) p->packedColor = 255; |
|
} |
|
else if( p->type == pt_slowgrav ) |
|
{ |
|
p->vel[2] = gravity * 0.05; |
|
} |
|
} |
|
|
|
//pglDepthMask( GL_TRUE ); |
|
} |
|
|
|
/* |
|
=============== |
|
CL_DrawParticlesExternal |
|
|
|
allow to draw effects from custom renderer |
|
=============== |
|
*/ |
|
void GAME_EXPORT CL_DrawParticlesExternal( const ref_viewpass_t *rvp, qboolean trans_pass, float frametime ) |
|
{ |
|
ref_instance_t oldRI = RI; |
|
|
|
memcpy( &oldRI, &RI, sizeof( ref_instance_t )); |
|
R_SetupRefParams( rvp ); |
|
R_SetupFrustum(); |
|
// R_SetupGL( false ); // don't touch GL-states |
|
|
|
// setup PVS for frame |
|
memcpy( RI.visbytes, tr.visbytes, gpGlobals->visbytes ); |
|
tr.frametime = frametime; |
|
|
|
gEngfuncs.CL_DrawEFX( frametime, trans_pass ); |
|
|
|
// restore internal state |
|
memcpy( &RI, &oldRI, sizeof( ref_instance_t )); |
|
}
|
|
|