/**
* @brief Check rain particle visibility
* @details Check the snowflake is visible and still going, wrapping if necessary.
*/
static qboolean CG_SnowParticleCheckVisible(cg_atmosphericParticle_t *particle)
{
float moved;
vec2_t distance;
if (!particle || particle->active == ACT_NOT)
{
return qfalse;
}
// units moved since last frame
moved = (cg.time - cg_atmFx.lastRainTime) * 0.001;
VectorMA(particle->pos, moved, particle->delta, particle->pos);
if (particle->pos[2] < BG_GetSkyGroundHeightAtPoint(particle->pos))
{
return CG_SetParticleActive(particle, ACT_NOT);
}
distance[0] = particle->pos[0] - cg.refdef_current->vieworg[0];
distance[1] = particle->pos[1] - cg.refdef_current->vieworg[1];
if ((distance[0] * distance[0] + distance[1] * distance[1]) > Square(MAX_ATMOSPHERIC_DISTANCE))
{
// just nuke this particle, let it respawn
return CG_SetParticleActive(particle, ACT_NOT);
}
return qtrue;
}
static qboolean CG_SnowParticleCheckVisible(cg_atmosphericParticle_t *particle)
{
// Check the snowflake is visible and still going, wrapping if necessary.
float moved;
vec2_t distance;
//int msec = trap_Milliseconds();
//n_checkvisibletime++;
if (!particle || particle->active == ACT_NOT)
{
// checkvisibletime += trap_Milliseconds() - msec;
return(qfalse);
}
moved = (cg.time - cg_atmFx.lastRainTime) * 0.001; // Units moved since last frame
VectorMA(particle->pos, moved, particle->delta, particle->pos);
if (particle->pos[2] < BG_GetSkyGroundHeightAtPoint(particle->pos))
{
//checkvisibletime += trap_Milliseconds() - msec;
return CG_SetParticleActive(particle, ACT_NOT);
}
distance[0] = particle->pos[0] - cg.refdef_current->vieworg[0];
distance[1] = particle->pos[1] - cg.refdef_current->vieworg[1];
if ((distance[0] * distance[0] + distance[1] * distance[1]) > Square(MAX_ATMOSPHERIC_DISTANCE))
{
// just nuke this particle, let it respawn
return CG_SetParticleActive(particle, ACT_NOT);
}
//checkvisibletime += trap_Milliseconds() - msec;
return(qtrue);
}
static qboolean CG_SnowParticleCheckVisible( cg_atmosphericParticle_t *particle )
{
// Check the snowflake is visible and still going, wrapping if necessary.
float moved;
vec2_t distance;
// int msec = trap_Milliseconds();
// n_checkvisibletime++;
if( !particle || particle->active == ACT_NOT ) {
// checkvisibletime += trap_Milliseconds() - msec;
return( qfalse );
}
moved = (cg.time - cg_atmFx.lastRainTime) * 0.001; // Units moved since last frame
VectorMA( particle->pos, moved, particle->delta, particle->pos );
if( particle->pos[2] < BG_GetSkyGroundHeightAtPoint( particle->pos ) ) {
// checkvisibletime += trap_Milliseconds() - msec;
return CG_SetParticleActive( particle, ACT_NOT );
}
distance[0] = particle->pos[0] - cg.refdef_current->vieworg[0];
distance[1] = particle->pos[1] - cg.refdef_current->vieworg[1];
if( (distance[0] * distance[0] + distance[1] * distance[1]) > Square( MAX_ATMOSPHERIC_DISTANCE ) )
{
// ydnar: just nuke this particle, let it respawn
return CG_SetParticleActive( particle, ACT_NOT );
/*
// Attempt to respot the particle at our other side
particle->pos[0] -= 1.85f * distance[0];
particle->pos[1] -= 1.85f * distance[1];
// ydnar: place particle in random position between ground and sky
groundHeight = BG_GetSkyGroundHeightAtPoint( particle->pos );
skyHeight = BG_GetSkyHeightAtPoint( particle->pos );
if( skyHeight == MAX_ATMOSPHERIC_HEIGHT )
return CG_SetParticleActive( particle, ACT_NOT );
particle->pos[ 2 ] = groundHeight + random() * (skyHeight - groundHeight);
// ydnar: valid spot?
if( particle->pos[ 2 ] <= groundHeight || particle->pos[ 2 ] >= skyHeight )
return CG_SetParticleActive( particle, ACT_NOT );
*/
}
// checkvisibletime += trap_Milliseconds() - msec;
return( qtrue );
}
static qboolean CG_RainParticleCheckVisible( cg_atmosphericParticle_t *particle )
{
// Check the raindrop is visible and still going, wrapping if necessary.
float moved;
vec2_t distance;
// int msec = trap_Milliseconds();
if( !particle || particle->active == ACT_NOT ) {
// checkvisibletime += trap_Milliseconds() - msec;
return( qfalse );
}
moved = (cg.time - cg_atmFx.lastRainTime) * 0.001; // Units moved since last frame
VectorMA( particle->pos, moved, particle->delta, particle->pos );
if( particle->pos[2] + particle->height < BG_GetSkyGroundHeightAtPoint( particle->pos ) ) {
// checkvisibletime += trap_Milliseconds() - msec;
return CG_SetParticleActive( particle, ACT_NOT );
}
distance[0] = particle->pos[0] - cg.refdef_current->vieworg[0];
distance[1] = particle->pos[1] - cg.refdef_current->vieworg[1];
if( (distance[0] * distance[0] + distance[1] * distance[1]) > Square( MAX_ATMOSPHERIC_DISTANCE ) )
{
// ydnar: just nuke this particle, let it respawn
return CG_SetParticleActive( particle, ACT_NOT );
/*
// Attempt to respot the particle at our other side
particle->pos[0] -= 1.85f * distance[0];
particle->pos[1] -= 1.85f * distance[1];
// Valid spot?
pointHeight = BG_GetSkyHeightAtPoint( particle->pos );
if( pointHeight == MAX_ATMOSPHERIC_HEIGHT ) {
// checkvisibletime += trap_Milliseconds() - msec;
return CG_SetParticleActive( particle, ACT_NOT );
}
pointHeight = BG_GetSkyGroundHeightAtPoint( particle->pos );
if( pointHeight == MAX_ATMOSPHERIC_HEIGHT || pointHeight >= particle->pos[2] ) {
// checkvisibletime += trap_Milliseconds() - msec;
return CG_SetParticleActive( particle, ACT_NOT );
}
*/
}
// checkvisibletime += trap_Milliseconds() - msec;
return( qtrue );
}
/**
* @brief Generate rain particle
* @details Attempt to 'spot' a raindrop somewhere below a sky texture.
*/
static qboolean CG_RainParticleGenerate(cg_atmosphericParticle_t *particle, vec3_t currvec, float currweight)
{
float angle = random() * 2 * M_PI, distance = 20 + MAX_ATMOSPHERIC_DISTANCE * random();
float groundHeight, skyHeight;
particle->pos[0] = cg.refdef_current->vieworg[0] + sin(angle) * distance;
particle->pos[1] = cg.refdef_current->vieworg[1] + cos(angle) * distance;
// choose a spawn point randomly between sky and ground
skyHeight = BG_GetSkyHeightAtPoint(particle->pos);
if (skyHeight >= MAX_ATMOSPHERIC_HEIGHT)
{
return qfalse;
}
groundHeight = BG_GetSkyGroundHeightAtPoint(particle->pos);
if (groundHeight + particle->height + ATMOSPHERIC_PARTICLE_OFFSET >= skyHeight)
{
return qfalse;
}
particle->pos[2] = groundHeight + random() * (skyHeight - groundHeight);
// make sure it doesn't fall from too far cause it then will go over our heads ('lower the ceiling')
if (cg_atmFx.baseHeightOffset > 0)
{
if (particle->pos[2] - cg.refdef_current->vieworg[2] > cg_atmFx.baseHeightOffset)
{
particle->pos[2] = cg.refdef_current->vieworg[2] + cg_atmFx.baseHeightOffset;
if (particle->pos[2] < groundHeight)
{
return qfalse;
}
}
}
// rain goes in bursts - allow max raindrops every 10 seconds
if (cg_atmFx.oldDropsActive > (0.50 * cg_atmFx.numDrops + 0.001 * cg_atmFx.numDrops * (10000 - (cg.time % 10000))))
{
return qfalse;
}
CG_SetParticleActive(particle, ACT_FALLING);
particle->colour[0] = 0.6 + 0.2 * random() * 0xFF;
particle->colour[1] = 0.6 + 0.2 * random() * 0xFF;
particle->colour[2] = 0.6 + 0.2 * random() * 0xFF;
VectorCopy(currvec, particle->delta);
particle->delta[2] += crandom() * 100;
VectorCopy(particle->delta, particle->deltaNormalized);
VectorNormalizeFast(particle->deltaNormalized);
particle->height = ATMOSPHERIC_RAIN_HEIGHT + crandom() * 100;
particle->weight = currweight;
particle->effectshader = &cg_atmFx.effectshaders[0];
//particle->effectshader = &cg_atmFx.effectshaders[ (int) (random() * ( cg_atmFx.numEffectShaders - 1 )) ];
return qtrue;
}
static qboolean CG_SnowParticleGenerate( cg_atmosphericParticle_t *particle, vec3_t currvec, float currweight ) {
// Attempt to 'spot' a snowflake somewhere below a sky texture.
float angle, distance;
float groundHeight, skyHeight;
// int msec = trap_Milliseconds();
// n_generatetime++;
angle = random() * 2 * M_PI;
distance = 20 + MAX_ATMOSPHERIC_DISTANCE * random();
particle->pos[0] = cg.refdef.vieworg[0] + sin( angle ) * distance;
particle->pos[1] = cg.refdef.vieworg[1] + cos( angle ) * distance;
// ydnar: choose a spawn point randomly between sky and ground
skyHeight = BG_GetSkyHeightAtPoint( particle->pos );
if ( skyHeight == MAX_ATMOSPHERIC_HEIGHT ) {
return qfalse;
}
groundHeight = BG_GetSkyGroundHeightAtPoint( particle->pos );
if ( groundHeight >= skyHeight ) {
return qfalse;
}
particle->pos[2] = groundHeight + random() * ( skyHeight - groundHeight );
// make sure it doesn't fall from too far cause it then will go over our heads ('lower the ceiling')
if ( cg_atmFx.baseHeightOffset > 0 ) {
if ( particle->pos[2] - cg.refdef.vieworg[2] > cg_atmFx.baseHeightOffset ) {
particle->pos[2] = cg.refdef.vieworg[2] + cg_atmFx.baseHeightOffset;
if ( particle->pos[2] < groundHeight ) {
return qfalse;
}
}
}
CG_SetParticleActive( particle, ACT_FALLING );
VectorCopy( currvec, particle->delta );
particle->delta[2] += crandom() * 25;
VectorCopy( particle->delta, particle->deltaNormalized );
VectorNormalizeFast( particle->deltaNormalized );
particle->height = ATMOSPHERIC_SNOW_HEIGHT + random() * 2;
particle->weight = particle->height * 0.5f;
if (cg_atmFx.numEffectShaders > 1) {
particle->effectshader = &cg_atmFx.effectshaders[ rand()%cg_atmFx.numEffectShaders ];
} else {
particle->effectshader = &cg_atmFx.effectshaders[0];
}
// generatetime += trap_Milliseconds() - msec;
return( qtrue );
}
/**
* @brief Generate a snowflake
* @details Attempt to 'spot' a snowflake somewhere below a sky texture.
*/
static qboolean CG_SnowParticleGenerate(cg_atmosphericParticle_t *particle, vec3_t currvec, float currweight)
{
float angle = random() * 2 * M_PI, distance = 20 + MAX_ATMOSPHERIC_DISTANCE * random();
float groundHeight, skyHeight;
particle->pos[0] = cg.refdef_current->vieworg[0] + sin(angle) * distance;
particle->pos[1] = cg.refdef_current->vieworg[1] + cos(angle) * distance;
// choose a spawn point randomly between sky and ground
skyHeight = BG_GetSkyHeightAtPoint(particle->pos);
if (skyHeight >= MAX_ATMOSPHERIC_HEIGHT)
{
return qfalse;
}
groundHeight = BG_GetSkyGroundHeightAtPoint(particle->pos);
if (groundHeight + particle->height + ATMOSPHERIC_PARTICLE_OFFSET >= skyHeight)
{
return qfalse;
}
particle->pos[2] = groundHeight + random() * (skyHeight - groundHeight);
// make sure it doesn't fall from too far cause it then will go over our heads ('lower the ceiling')
if (cg_atmFx.baseHeightOffset > 0)
{
if (particle->pos[2] - cg.refdef_current->vieworg[2] > cg_atmFx.baseHeightOffset)
{
particle->pos[2] = cg.refdef_current->vieworg[2] + cg_atmFx.baseHeightOffset;
if (particle->pos[2] < groundHeight)
{
return qfalse;
}
}
}
CG_SetParticleActive(particle, ACT_FALLING);
VectorCopy(currvec, particle->delta);
particle->delta[2] += crandom() * 25;
VectorCopy(particle->delta, particle->deltaNormalized);
VectorNormalizeFast(particle->deltaNormalized);
particle->height = ATMOSPHERIC_SNOW_HEIGHT + random() * 2;
particle->weight = particle->height * 0.5f;
particle->effectshader = &cg_atmFx.effectshaders[0];
//particle->effectshader = &cg_atmFx.effectshaders[ (int) (random() * ( cg_atmFx.numEffectShaders - 1 )) ];
return qtrue;
}
static qboolean CG_RainParticleGenerate( cg_atmosphericParticle_t *particle, vec3_t currvec, float currweight )
{
// Attempt to 'spot' a raindrop somewhere below a sky texture.
float angle, distance;
float groundHeight, skyHeight;
// int msec = trap_Milliseconds();
// n_generatetime++;
angle = random() * 2*M_PI;
distance = 20 + MAX_ATMOSPHERIC_DISTANCE * random();
particle->pos[0] = cg.refdef_current->vieworg[0] + sin(angle) * distance;
particle->pos[1] = cg.refdef_current->vieworg[1] + cos(angle) * distance;
// ydnar: choose a spawn point randomly between sky and ground
skyHeight = BG_GetSkyHeightAtPoint( particle->pos );
if( skyHeight == MAX_ATMOSPHERIC_HEIGHT )
return qfalse;
groundHeight = BG_GetSkyGroundHeightAtPoint( particle->pos );
if( groundHeight >= skyHeight )
return qfalse;
particle->pos[2] = groundHeight + random() * (skyHeight - groundHeight);
// make sure it doesn't fall from too far cause it then will go over our heads ('lower the ceiling')
if( cg_atmFx.baseHeightOffset > 0 ) {
if( particle->pos[2] - cg.refdef_current->vieworg[2] > cg_atmFx.baseHeightOffset ) {
particle->pos[2] = cg.refdef_current->vieworg[2] + cg_atmFx.baseHeightOffset;
if( particle->pos[2] < groundHeight ) {
return qfalse;
}
}
}
// ydnar: rain goes in bursts
{
float maxActiveDrops;
// every 10 seconds allow max raindrops
maxActiveDrops = 0.50 * cg_atmFx.numDrops + 0.001 * cg_atmFx.numDrops * (10000 - (cg.time % 10000));
if( cg_atmFx.oldDropsActive > maxActiveDrops )
return qfalse;
}
CG_SetParticleActive( particle, ACT_FALLING );
particle->colour[0] = 0.6 + 0.2 * random() * 0xFF;
particle->colour[1] = 0.6 + 0.2 * random() * 0xFF;
particle->colour[2] = 0.6 + 0.2 * random() * 0xFF;
VectorCopy( currvec, particle->delta );
particle->delta[2] += crandom() * 100;
VectorCopy( particle->delta, particle->deltaNormalized );
VectorNormalizeFast( particle->deltaNormalized );
particle->height = ATMOSPHERIC_RAIN_HEIGHT + crandom() * 100;
particle->weight = currweight;
particle->effectshader = &cg_atmFx.effectshaders[0];
// particle->effectshader = &cg_atmFx.effectshaders[ (int) (random() * ( cg_atmFx.numEffectShaders - 1 )) ];
// generatetime += trap_Milliseconds() - msec;
return( qtrue );
}
