static void CL_ParticleFunction (ptl_t *p, ptlCmd_t *cmd)
{
int stackIdx;
ptrdiff_t e;
int type;
int i, j, n;
void *cmdData;
float arg;
ptl_t *pnew;
/* test for null cmd */
if (!cmd)
return;
/* run until finding PC_END */
for (stackIdx = 0, e = 0; cmd->cmd != PC_END; cmd++) {
if (cmd->ref > RSTACK)
cmdData = CL_ParticleCommandGetDataLocation(p, cmd);
else {
if (!stackIdx)
Com_Error(ERR_DROP, "CL_ParticleFunction: stack underflow");
/* pop an element off the stack */
e = (byte *) stackPtr[--stackIdx] - cmdStack;
i = RSTACK - cmd->ref;
if (!i) {
/* normal stack reference */
cmdData = stackPtr[stackIdx];
cmd->type = stackType[stackIdx];
} else {
/* stack reference to element of vector */
if ((1 << stackType[stackIdx]) & V_VECS) {
cmd->type = V_FLOAT;
cmdData = (float *) stackPtr[stackIdx] + (i - 1);
} else {
Com_Error(ERR_DROP, "CL_ParticleFunction: can't get components of a non-vector type (particle %s)", p->ctrl->name);
}
}
}
switch (cmd->cmd) {
case PC_PUSH:
/* check for stack overflow */
if (stackIdx >= MAX_STACK_DEPTH)
Com_Error(ERR_DROP, "CL_ParticleFunction: stack overflow");
/* store the value in the stack */
stackPtr[stackIdx] = &cmdStack[e];
stackType[stackIdx] = cmd->type;
e += Com_SetValue(stackPtr[stackIdx++], cmdData, (valueTypes_t)cmd->type, 0, 0);
break;
case PC_POP:
case PC_KPOP:
/* check for stack underflow */
if (stackIdx == 0)
Com_Error(ERR_DROP, "CL_ParticleFunction: stack underflow");
/* get pics and models */
if (offsetof(ptl_t, pic) == -cmd->ref) {
if (stackType[--stackIdx] != V_STRING)
Com_Error(ERR_DROP, "Bad type '%s' for pic (particle %s)", vt_names[stackType[stackIdx - 1]], p->ctrl->name);
p->pic = CL_ParticleGetArt((char *) stackPtr[stackIdx], p->frame, ART_PIC);
e = (byte *) stackPtr[stackIdx] - cmdStack;
break;
}
if (offsetof(ptl_t, model) == -cmd->ref) {
if (stackType[--stackIdx] != V_STRING)
Com_Error(ERR_DROP, "Bad type '%s' for model (particle %s)", vt_names[stackType[stackIdx - 1]], p->ctrl->name);
p->model = CL_ParticleGetArt((char *) stackPtr[stackIdx], p->frame, ART_MODEL);
e = (byte *) stackPtr[stackIdx] - cmdStack;
break;
}
if (offsetof(ptl_t, program) == -cmd->ref) {
if (stackType[--stackIdx] != V_STRING)
Com_Error(ERR_DROP, "Bad type '%s' for program (particle %s)", vt_names[stackType[stackIdx - 1]], p->ctrl->name);
p->program = R_LoadProgram((char *) stackPtr[stackIdx], R_InitParticleProgram, R_UseParticleProgram);
if (p->program)
p->program->userdata = p;
e = (byte *) stackPtr[stackIdx] - cmdStack;
break;
}
/* get different data */
if (cmd->cmd == PC_POP)
e -= Com_SetValue(cmdData, stackPtr[--stackIdx], (valueTypes_t)cmd->type, 0, 0);
else
Com_SetValue(cmdData, stackPtr[stackIdx - 1], (valueTypes_t)cmd->type, 0, 0);
break;
case PC_ADD:
case PC_SUB:
/* check for stack underflow */
if (stackIdx == 0)
Com_Error(ERR_DROP, "CL_ParticleFunction: stack underflow");
type = stackType[stackIdx - 1];
if (!((1 << type) & V_VECS))
Com_Error(ERR_DROP, "CL_ParticleFunction: bad type '%s' for add (particle %s)", vt_names[stackType[stackIdx - 1]], p->ctrl->name);
/* float based vector addition */
if (type != cmd->type)
Com_Error(ERR_DROP, "CL_ParticleFunction: bad vector dimensions for add/sub (particle %s)", p->ctrl->name);
n = type - V_FLOAT + 1;
for (i = 0; i < n; i++) {
if (cmd->cmd == PC_SUB)
arg = -(*((float *) cmdData + i));
else
arg = *((float *) cmdData + i);
*((float *) stackPtr[stackIdx - 1] + i) += arg;
}
break;
case PC_MUL:
case PC_DIV:
/* check for stack underflow */
if (stackIdx == 0)
Com_Error(ERR_DROP, "CL_ParticleFunction: stack underflow");
type = stackType[stackIdx - 1];
if (!((1 << type) & V_VECS))
Com_Error(ERR_DROP, "CL_ParticleFunction: bad type '%s' for add (particle %s)", vt_names[stackType[stackIdx - 1]], p->ctrl->name);
n = type - V_FLOAT + 1;
if (type > V_FLOAT && cmd->type > V_FLOAT) {
/* component wise multiplication */
if (type != cmd->type)
Com_Error(ERR_DROP, "CL_ParticleFunction: bad vector dimensions for mul/div (particle %s)", p->ctrl->name);
for (i = 0; i < n; i++) {
if (cmd->cmd == PC_DIV)
arg = 1.0 / (*((float *) cmdData + i));
else
arg = *((float *) cmdData + i);
*((float *) stackPtr[stackIdx - 1] + i) *= arg;
}
break;
}
if (cmd->type > V_FLOAT)
Com_Error(ERR_DROP, "CL_ParticleFunction: bad vector dimensions for mul/div (particle %s)", p->ctrl->name);
/* scalar multiplication with scalar in second argument */
if (cmd->cmd == PC_DIV)
arg = 1.0 / (*(float *) cmdData);
else
arg = *(float *) cmdData;
for (i = 0; i < n; i++)
*((float *) stackPtr[stackIdx - 1] + i) *= arg;
break;
case PC_SIN:
if (cmd->type != V_FLOAT)
Com_Error(ERR_DROP, "CL_ParticleFunction: bad type '%s' for sin (particle %s)", vt_names[stackType[stackIdx - 1]], p->ctrl->name);
stackPtr[stackIdx] = &cmdStack[e];
stackType[stackIdx] = cmd->type;
*(float *) stackPtr[stackIdx++] = sin(*(float *) cmdData * (2 * M_PI));
e += sizeof(float);
break;
case PC_COS:
if (cmd->type != V_FLOAT)
Com_Error(ERR_DROP, "CL_ParticleFunction: bad type '%s' for cos (particle %s)", vt_names[stackType[stackIdx - 1]], p->ctrl->name);
stackPtr[stackIdx] = &cmdStack[e];
stackType[stackIdx] = cmd->type;
*(float *) stackPtr[stackIdx++] = sin(*(float *) cmdData * (2 * M_PI));
e += sizeof(float);
break;
case PC_TAN:
if (cmd->type != V_FLOAT)
Com_Error(ERR_DROP, "CL_ParticleFunction: bad type '%s' for tan (particle %s)", vt_names[stackType[stackIdx - 1]], p->ctrl->name);
stackPtr[stackIdx] = &cmdStack[e];
stackType[stackIdx] = cmd->type;
*(float *) stackPtr[stackIdx++] = sin(*(float *) cmdData * (2 * M_PI));
e += sizeof(float);
break;
case PC_RAND:
case PC_CRAND:
stackPtr[stackIdx] = &cmdStack[e];
stackType[stackIdx] = cmd->type;
n = cmd->type - V_FLOAT + 1;
if (cmd->cmd == PC_RAND)
for (i = 0; i < n; i++)
*((float *) stackPtr[stackIdx] + i) = *((float *) cmdData + i) * frand();
else
for (i = 0; i < n; i++)
*((float *) stackPtr[stackIdx] + i) = *((float *) cmdData + i) * crand();
e += n * sizeof(float);
stackIdx++;
break;
case PC_V2:
case PC_V3:
case PC_V4:
n = cmd->cmd - PC_V2 + 2;
j = 0;
if (stackIdx < n)
Com_Error(ERR_DROP, "CL_ParticleFunction: stack underflow");
for (i = 0; i < n; i++) {
if (!((1 << stackType[--stackIdx]) & V_VECS))
Com_Error(ERR_DROP, "CL_ParticleFunction: bad type '%s' for vector creation (particle %s)", vt_names[stackType[stackIdx]], p->ctrl->name);
j += stackType[stackIdx] - V_FLOAT + 1;
}
if (j > 4)
Com_Error(ERR_DROP, "CL_ParticleFunction: created vector with dim > 4 (particle %s)", p->ctrl->name);
stackType[stackIdx++] = V_FLOAT + j - 1;
break;
case PC_KILL:
CL_ParticleFree(p);
return;
case PC_SPAWN:
pnew = CL_ParticleSpawn((const char *) cmdData, p->levelFlags, p->s, p->v, p->a);
if (!pnew)
Com_Printf("PC_SPAWN: Could not spawn child particle for '%s' (%s)\n", p->ctrl->name, (const char *) cmdData);
break;
case PC_TNSPAWN:
/* check for stack underflow */
if (stackIdx < 2)
Com_Error(ERR_DROP, "CL_ParticleFunction: stack underflow");
/* pop elements off the stack */
/* amount of timed particles */
type = stackType[--stackIdx];
if (type != V_INT)
Com_Error(ERR_DROP, "CL_ParticleFunction: bad type '%s' int required for tnspawn (particle %s)", vt_names[stackType[stackIdx]], p->ctrl->name);
n = *(int *) stackPtr[stackIdx];
/* delta time */
type = stackType[--stackIdx];
if (type != V_INT)
Com_Error(ERR_DROP, "CL_ParticleFunction: bad type '%s' int required for tnspawn (particle %s)", vt_names[stackType[stackIdx]], p->ctrl->name);
i = *(int *) stackPtr[stackIdx];
/** @todo make the children boolean configurable */
CL_ParticleSpawnTimed((const char *) cmdData, p, true, i, n);
e -= 2 * sizeof(int);
break;
case PC_NSPAWN:
/* check for stack underflow */
if (stackIdx == 0)
Com_Error(ERR_DROP, "CL_ParticleFunction: stack underflow");
type = stackType[--stackIdx];
if (type != V_INT)
Com_Error(ERR_DROP, "CL_ParticleFunction: bad type '%s' int required for nspawn (particle %s)", vt_names[stackType[stackIdx]], p->ctrl->name);
n = *(int *) stackPtr[stackIdx];
e -= sizeof(int);
for (i = 0; i < n; i++) {
pnew = CL_ParticleSpawn((const char *) cmdData, p->levelFlags, p->s, p->v, p->a);
if (!pnew)
Com_Printf("PC_NSPAWN: Could not spawn child particle for '%s'\n", p->ctrl->name);
}
break;
case PC_CHILD:
pnew = CL_ParticleSpawn((const char *)cmdData, p->levelFlags, p->s, p->v, p->a);
if (pnew) {
pnew->next = p->children;
pnew->parent = p;
p->children = pnew;
} else {
Com_Printf("PC_CHILD: Could not spawn child particle for '%s'\n", p->ctrl->name);
}
break;
default:
Com_Error(ERR_DROP, "CL_ParticleFunction: unknown cmd type %i", cmd->type);
break;
}
}
}
void CLQ2_RailTrail( vec3_t start, vec3_t end ) {
byte clr = 0x74;
vec3_t move;
VectorCopy( start, move );
vec3_t vec;
VectorSubtract( end, start, vec );
float len = VectorNormalize( vec );
vec3_t right, up;
MakeNormalVectors( vec, right, up );
for ( int i = 0; i < len; i++ ) {
cparticle_t* p = CL_AllocParticle();
if ( !p ) {
return;
}
p->type = pt_q2static;
VectorClear( p->accel );
float d = i * 0.1;
float c = cos( d );
float s = sin( d );
vec3_t dir;
VectorScale( right, c, dir );
VectorMA( dir, s, up, dir );
p->alpha = 1.0;
p->alphavel = -1.0 / ( 1 + frand() * 0.2 );
p->color = clr + ( rand() & 7 );
for ( int j = 0; j < 3; j++ ) {
p->org[ j ] = move[ j ] + dir[ j ] * 3;
p->vel[ j ] = dir[ j ] * 6;
}
VectorAdd( move, vec, move );
}
float dec = 0.75;
VectorScale( vec, dec, vec );
VectorCopy( start, move );
while ( len > 0 ) {
len -= dec;
cparticle_t* p = CL_AllocParticle();
if ( !p ) {
return;
}
p->type = pt_q2static;
VectorClear( p->accel );
p->alpha = 1.0;
p->alphavel = -1.0 / ( 0.6 + frand() * 0.2 );
p->color = rand() & 15;
for ( int j = 0; j < 3; j++ ) {
p->org[ j ] = move[ j ] + crand() * 3;
p->vel[ j ] = crand() * 3;
p->accel[ j ] = 0;
}
VectorAdd( move, vec, move );
}
}
void CLQ2_TrapParticles( vec3_t origin ) {
origin[ 2 ] -= 14;
vec3_t start;
VectorCopy( origin, start );
vec3_t end;
VectorCopy( origin, end );
origin[ 2 ] += 14;
end[ 2 ] += 64;
vec3_t move;
VectorCopy( start, move );
vec3_t vec;
VectorSubtract( end, start, vec );
float len = VectorNormalize( vec );
int dec = 5;
VectorScale( vec, 5, vec );
// FIXME: this is a really silly way to have a loop
while ( len > 0 ) {
len -= dec;
cparticle_t* p = CL_AllocParticle();
if ( !p ) {
return;
}
p->type = pt_q2static;
VectorClear( p->accel );
p->alpha = 1.0;
p->alphavel = -1.0 / ( 0.3 + frand() * 0.2 );
p->color = 0xe0;
for ( int j = 0; j < 3; j++ ) {
p->org[ j ] = move[ j ] + crand();
p->vel[ j ] = crand() * 15;
p->accel[ j ] = 0;
}
p->accel[ 2 ] = PARTICLE_GRAVITY;
VectorAdd( move, vec, move );
}
vec3_t org;
VectorCopy( origin, org );
for ( int i = -2; i <= 2; i += 4 ) {
for ( int j = -2; j <= 2; j += 4 ) {
for ( int k = -2; k <= 2; k += 4 ) {
cparticle_t* p = CL_AllocParticle();
if ( !p ) {
return;
}
p->type = pt_q2static;
p->color = 0xe0 + ( rand() & 3 );
p->alpha = 1.0;
p->alphavel = -1.0 / ( 0.3 + ( rand() & 7 ) * 0.02 );
p->org[ 0 ] = org[ 0 ] + i + ( ( rand() & 23 ) * crand() );
p->org[ 1 ] = org[ 1 ] + j + ( ( rand() & 23 ) * crand() );
p->org[ 2 ] = org[ 2 ] + k + ( ( rand() & 23 ) * crand() );
vec3_t dir;
dir[ 0 ] = j * 8;
dir[ 1 ] = i * 8;
dir[ 2 ] = k * 8;
VectorNormalize( dir );
float vel = 50 + ( rand() & 63 );
VectorScale( dir, vel, p->vel );
p->accel[ 0 ] = p->accel[ 1 ] = 0;
p->accel[ 2 ] = -PARTICLE_GRAVITY;
}
}
}
}
void CL_Heatbeam (vec3_t start, vec3_t end)
{
vec3_t move;
vec3_t vec;
float len;
int j;
cparticle_t *p;
vec3_t forward, right, up;
int i;
float d, c, s;
vec3_t dir;
float ltime;
float step = 32.0, rstep;
float start_pt;
float rot;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
// MakeNormalVectors (vec, right, up);
VectorCopy (cl.v_forward, forward);
VectorCopy (cl.v_right, right);
VectorCopy (cl.v_up, up);
VectorMA (move, -0.5, right, move);
VectorMA (move, -0.5, up, move);
for (i=0; i<8; i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
VectorClear (p->accel);
d = crand()*M_PI;
c = cos(d)*30;
s = sin(d)*30;
p->alpha = 1.0;
p->alphavel = -5.0 / (1+frand());
p->color = 223 - (rand()&7);
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j];
}
VectorScale (vec, 450, p->vel);
VectorMA (p->vel, c, right, p->vel);
VectorMA (p->vel, s, up, p->vel);
}
/*
ltime = (float) cl.time/1000.0;
start_pt = fmod(ltime*16.0,step);
VectorMA (move, start_pt, vec, move);
VectorScale (vec, step, vec);
// Com_Printf ("%f\n", ltime);
rstep = M_PI/12.0;
for (i=start_pt ; i<len ; i+=step)
{
if (i>step*5) // don't bother after the 5th ring
break;
for (rot = 0; rot < M_PI*2; rot += rstep)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
VectorClear (p->accel);
// rot+= fmod(ltime, 12.0)*M_PI;
// c = cos(rot)/2.0;
// s = sin(rot)/2.0;
c = cos(rot)/1.5;
s = sin(rot)/1.5;
// trim it so it looks like it's starting at the origin
if (i < 10)
{
VectorScale (right, c*(i/10.0), dir);
VectorMA (dir, s*(i/10.0), up, dir);
}
else
{
VectorScale (right, c, dir);
VectorMA (dir, s, up, dir);
}
p->alpha = 0.5;
// p->alphavel = -1.0 / (1+frand()*0.2);
p->alphavel = -1000.0;
// p->color = 0x74 + (rand()&7);
p->color = 223 - (rand()&7);
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + dir[j]*3;
// p->vel[j] = dir[j]*6;
p->vel[j] = 0;
}
}
VectorAdd (move, vec, move);
}
*/
}
void CLQ2_DiminishingTrail( vec3_t start, vec3_t end, q2centity_t* old, int flags ) {
vec3_t move;
VectorCopy( start, move );
vec3_t vec;
VectorSubtract( end, start, vec );
float len = VectorNormalize( vec );
float dec = 0.5;
VectorScale( vec, dec, vec );
float orgscale;
float velscale;
if ( old->trailcount > 900 ) {
orgscale = 4;
velscale = 15;
} else if ( old->trailcount > 800 ) {
orgscale = 2;
velscale = 10;
} else {
orgscale = 1;
velscale = 5;
}
while ( len > 0 ) {
len -= dec;
// drop less particles as it flies
if ( ( rand() & 1023 ) < old->trailcount ) {
cparticle_t* p = CL_AllocParticle();
if ( !p ) {
return;
}
p->type = pt_q2static;
VectorClear( p->accel );
if ( flags & Q2EF_GIB ) {
p->alpha = 1.0;
p->alphavel = -1.0 / ( 1 + frand() * 0.4 );
p->color = 0xe8 + ( rand() & 7 );
for ( int j = 0; j < 3; j++ ) {
p->org[ j ] = move[ j ] + crand() * orgscale;
p->vel[ j ] = crand() * velscale;
p->accel[ j ] = 0;
}
p->vel[ 2 ] -= PARTICLE_GRAVITY;
} else if ( flags & Q2EF_GREENGIB ) {
p->alpha = 1.0;
p->alphavel = -1.0 / ( 1 + frand() * 0.4 );
p->color = 0xdb + ( rand() & 7 );
for ( int j = 0; j < 3; j++ ) {
p->org[ j ] = move[ j ] + crand() * orgscale;
p->vel[ j ] = crand() * velscale;
p->accel[ j ] = 0;
}
p->vel[ 2 ] -= PARTICLE_GRAVITY;
} else {
p->alpha = 1.0;
p->alphavel = -1.0 / ( 1 + frand() * 0.2 );
p->color = 4 + ( rand() & 7 );
for ( int j = 0; j < 3; j++ ) {
p->org[ j ] = move[ j ] + crand() * orgscale;
p->vel[ j ] = crand() * velscale;
}
p->accel[ 2 ] = 20;
}
}
old->trailcount -= 5;
if ( old->trailcount < 100 ) {
old->trailcount = 100;
}
VectorAdd( move, vec, move );
}
}
/*
===============
CL_RailTrail
===============
*/
void CL_RailTrail (vec3_t start, vec3_t end)
{
vec3_t move;
vec3_t vec;
float len;
int j;
cparticle_t *p;
float dec;
vec3_t right, up;
int i;
float d, c, s;
vec3_t dir;
byte clr = 0x74;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
MakeNormalVectors (vec, right, up);
for (i=0 ; i<len ; i++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
VectorClear (p->accel);
d = i * 0.1;
c = cos(d);
s = sin(d);
VectorScale (right, c, dir);
VectorMA (dir, s, up, dir);
p->alpha = 1.0;
p->alphavel = -1.0 / (1+frand()*0.2);
p->color = clr + (rand()&7);
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + dir[j]*3;
p->vel[j] = dir[j]*6;
}
VectorAdd (move, vec, move);
}
dec = 0.75;
VectorScale (vec, dec, vec);
VectorCopy (start, move);
while (len > 0)
{
len -= dec;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
VectorClear (p->accel);
p->alpha = 1.0;
p->alphavel = -1.0 / (0.6+frand()*0.2);
p->color = 0x0 + rand()&15;
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + crand()*3;
p->vel[j] = crand()*3;
p->accel[j] = 0;
}
VectorAdd (move, vec, move);
}
}
// RAFAEL
void CL_TrapParticles (entity_t *ent)
{
vec3_t move;
vec3_t vec;
vec3_t start, end;
float len;
int j;
cparticle_t *p;
int dec;
ent->origin[2]-=14;
VectorCopy (ent->origin, start);
VectorCopy (ent->origin, end);
end[2]+=64;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
dec = 5;
VectorScale (vec, 5, vec);
// FIXME: this is a really silly way to have a loop
while (len > 0)
{
len -= dec;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -1.0 / (0.3+frand()*0.2);
p->color = 0xe0;
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + crand();
p->vel[j] = crand()*15;
p->accel[j] = 0;
}
p->accel[2] = PARTICLE_GRAVITY;
VectorAdd (move, vec, move);
}
{
int i, j, k;
cparticle_t *p;
float vel;
vec3_t dir;
vec3_t org;
ent->origin[2]+=14;
VectorCopy (ent->origin, org);
for (i=-2 ; i<=2 ; i+=4)
for (j=-2 ; j<=2 ; j+=4)
for (k=-2 ; k<=4 ; k+=4)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
p->color = 0xe0 + (rand()&3);
p->alpha = 1.0;
p->alphavel = -1.0 / (0.3 + (rand()&7) * 0.02);
p->org[0] = org[0] + i + ((rand()&23) * crand());
p->org[1] = org[1] + j + ((rand()&23) * crand());
p->org[2] = org[2] + k + ((rand()&23) * crand());
dir[0] = j * 8;
dir[1] = i * 8;
dir[2] = k * 8;
VectorNormalize (dir);
vel = 50 + rand()&63;
VectorScale (dir, vel, p->vel);
p->accel[0] = p->accel[1] = 0;
p->accel[2] = -PARTICLE_GRAVITY;
}
}
}
/*
===============
CL_RailTrail
===============
*/
void CL_RailTrail (const vec3_t start, const vec3_t end)
{
vec3_t move, vec, right, up, dir;
float len, dec, c, s;
cparticle_t *p;
int i;
byte clr = 0x74;
cdlight_t *dl;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
// add a light at the dest
dl = CL_AllocDlight(0);
VectorCopy(end, dl->origin);
dl->radius = 100;
dl->die = cl.time + 200;
VectorSet(dl->color, 0.3, 0.5, 1.0);
MakeNormalVectors (vec, right, up);
for (i=0 ; i<len ; i++)
{
if(i % 3 == 0){
VectorAdd(move, vec, move);
continue;
}
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
VectorClear (p->accel);
Q_sincos(i * 0.1f, &s, &c);
VectorScale (right, c, dir);
VectorMA (dir, s, up, dir);
p->alpha = 1.0f;
p->alphavel = -1.0f / (1.0f+frand()*0.2f);
p->color = clr + (rand()&7);
p->org[0] = move[0] + dir[0]*3;
p->org[1] = move[1] + dir[1]*3;
p->org[2] = move[2] + dir[2]*3;
p->vel[0] = dir[0]*6;
p->vel[1] = dir[1]*6;
p->vel[2] = dir[2]*6;
VectorAdd (move, vec, move);
}
dec = 2.0f;
VectorScale (vec, dec, vec);
VectorCopy (start, move);
while (len > 0)
{
len -= dec;
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
p->time = cl.time;
VectorClear (p->accel);
p->alpha = 1.0f;
p->alphavel = -1.0f / (0.6f+frand()*0.2f);
p->color = 0x0 + (rand()&15);
p->org[0] = move[0] + crand()*3;
p->org[1] = move[1] + crand()*3;
p->org[2] = move[2] + crand()*3;
p->vel[0] = crand()*3;
p->vel[1] = crand()*3;
p->vel[2] = crand()*3;
VectorAdd (move, vec, move);
}
}
/*
===============
CL_DiminishingTrail
===============
*/
void CL_DiminishingTrail (vec3_t start, vec3_t end, centity_t *old, int flags)
{
vec3_t move;
vec3_t vec;
float len;
int j;
cparticle_t *p;
float dec;
float orgscale;
float velscale;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
dec = 0.5;
VectorScale (vec, dec, vec);
if (old->trailcount > 900)
{
orgscale = 4;
velscale = 15;
}
else if (old->trailcount > 800)
{
orgscale = 2;
velscale = 10;
}
else
{
orgscale = 1;
velscale = 5;
}
while (len > 0)
{
len -= dec;
if (!free_particles)
return;
// drop less particles as it flies
if ((rand()&1023) < old->trailcount)
{
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
if (flags & EF_GIB)
{
p->alpha = 1.0;
p->alphavel = -1.0 / (1+frand()*0.4);
p->color = 0xe8 + (rand()&7);
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + crand()*orgscale;
p->vel[j] = crand()*velscale;
p->accel[j] = 0;
}
p->vel[2] -= PARTICLE_GRAVITY;
}
else if (flags & EF_GREENGIB)
{
p->alpha = 1.0;
p->alphavel = -1.0 / (1+frand()*0.4);
p->color = 0xdb + (rand()&7);
for (j=0; j< 3; j++)
{
p->org[j] = move[j] + crand()*orgscale;
p->vel[j] = crand()*velscale;
p->accel[j] = 0;
}
p->vel[2] -= PARTICLE_GRAVITY;
}
else
{
p->alpha = 1.0;
p->alphavel = -1.0 / (1+frand()*0.2);
p->color = 4 + (rand()&7);
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + crand()*orgscale;
p->vel[j] = crand()*velscale;
}
p->accel[2] = 20;
}
}
old->trailcount -= 5;
if (old->trailcount < 100)
old->trailcount = 100;
VectorAdd (move, vec, move);
}
}
uint32_t random_days(uint8_t hour, uint8_t min, uint8_t sec, uint32_t base_days)
{
init_crand_consistent(hour,min,sec);
uint32_t random = (crand(0) * 1000) / 0x7FFF;
return (uint32_t)((base_days * random) / 1000);
}
/**
* @brief Updates weather for the time passed; handles particle creation/removal automatically
*/
void Weather::update (int milliseconds)
{
/* Don't play the weather particles if the user doesn't want them */
if (!Cvar_GetInteger("cl_particleweather")) {
/* This makes weather look very weird if it is enabled mid-battle */
/* clearParticles(); */
return;
}
size_t dead = 0;
/* physics: check for ttl and move live particles */
for (size_t i = 0; i < Weather::MAX_PARTICLES; i++) {
Weather::particle &prt = particles[i];
if (prt.ttl < 0) {
dead++;
continue;
} else { /** @todo creates vanishing-before-impact particles at low framerates -- should improve that somehow */
int restOfLife = prt.ttl -= milliseconds;
if (restOfLife < 0) {
if (fabs(prt.vz) < 0.001f || splashTime < 1) {
/* either no splash or is a splash particle dying */
dead++;
continue;
}
/* convert it into splash particle */
/* technically, we should complete the last frame of movement, but with current particle types it looks good even without it */
prt.vz = 0; prt.vx = 0; prt.vy = 0;
prt.ttl += splashTime;
}
}
/* if we got so far, particle is alive and probably needs a physics update */
const int timeAfterUpdate = prt.timeout -= milliseconds;
const float moveDuration = milliseconds * 0.001f;
prt.x += prt.vx * moveDuration; prt.y += prt.vy * moveDuration; prt.z += prt.vz * moveDuration;
if (timeAfterUpdate > 0) {
/* just move linearly */
continue;
}
/* alter motion vector */
/** @todo */
}
/* create new ones in place of dead */
if (dead) {
const float windX = cos(windDirection) * (windStrength + crand() * windTurbulence);
const float windY = sin(windDirection) * (windStrength + crand() * windTurbulence);
AABB weatherZone; /** < extents of zone in which weather particles will be rendered */
weatherZone = cl.mapData->mapBox;
weatherZone.expandXY(256);
weatherZone.maxs[2] += 512;
Line prtPath;
if (dead > 200) dead = 200; /* avoid creating too much particles in the single frame, it could kill the low-end hardware */
int debugCreated = 0;
for (size_t i = 0; dead && i < Weather::MAX_PARTICLES && i < weatherStrength * Weather::MAX_PARTICLES; i++) {
Weather::particle &prt = particles[i];
if (prt.ttl >= 0)
continue;
prt.x = (frand() * (weatherZone.getMaxX() - weatherZone.getMinX())) + weatherZone.getMinX();
prt.y = (frand() * (weatherZone.getMaxY() - weatherZone.getMinY())) + weatherZone.getMinY();
prt.z = weatherZone.getMaxZ();
prt.vx = windX;
prt.vy = windY;
prt.vz = -fallingSpeed * (frand() * 0.2f + 0.9f);
float lifeTime = (weatherZone.getMaxZ() - weatherZone.getMinZ()) / -prt.vz; /* default */
VectorSet(prtPath.start, prt.x, prt.y, prt.z);
VectorSet(prtPath.stop, prt.x + prt.vx * lifeTime, prt.y + prt.vy * lifeTime, prt.z + prt.vz * lifeTime);
trace_t trace = CL_Trace(prtPath, AABB::EMPTY, nullptr, nullptr, MASK_SOLID, cl.mapMaxLevel - 1); /* find the collision point */
lifeTime *= trace.fraction;
prt.ttl = 1000 * lifeTime; /* convert to milliseconds */
prt.timeout = prt.ttl + 1000000; /** @todo proper code for physics */
debugCreated++;
dead--;
}
}
#if 0
if (debugCreated) Com_Printf("created %i weather particles\n", debugCreated);
#endif
}
/*
===============
CL_BubbleTrail2 (lets you control the # of bubbles by setting the distance between the spawns)
===============
*/
void CL_BubbleTrail2 (vec3_t start, vec3_t end, int dist)
{
vec3_t move;
vec3_t vec;
float len;
int i;
#ifndef QMAX
int j;
cparticle_t *p;
#endif
float dec;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
dec = dist;
VectorScale (vec, dec, vec);
for (i=0 ; i<len ; i+=dec)
{
#ifdef QMAX
setupParticle (
0, 0, 0,
move[0]+crand()*2, move[1]+crand()*2, move[2]+crand()*2,
crand()*5, crand()*5, crand()*5+6,
0, 0, 0,
255, 255, 255,
0, 0, 0,
0.75, -1.0 / (1 + frand() * 0.2),
(frand()>0.25)? 1 : (frand()>0.5) ? 2 : (frand()>0.75) ? 3 : 4, 1,
particle_bubble,
PART_TRANS|PART_SHADED,
NULL,0);
#else
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -1.0 / (1+frand()*0.1);
p->color = 4 + (rand()&7);
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + crand()*2;
p->vel[j] = crand()*10;
}
p->org[2] -= 4;
// p->vel[2] += 6;
p->vel[2] += 20;
#endif
VectorAdd (move, vec, move);
}
}
void CL_FlameEffects (centity_t *ent, vec3_t origin)
{
int n, count;
int j;
cparticle_t *p;
count = rand() & 0xF;
for(n=0;n<count;n++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -1.0 / (1+frand()*0.2);
#ifndef QMAX
p->color = 226 + (rand() % 4);
#endif
for (j=0 ; j<3 ; j++)
{
p->org[j] = origin[j] + crand()*5;
p->vel[j] = crand()*5;
}
p->vel[2] = crand() * -10;
p->accel[2] = -PARTICLE_GRAVITY;
}
count = rand() & 0x7;
for(n=0;n<count;n++)
{
if (!free_particles)
return;
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -1.0 / (1+frand()*0.5);
#ifndef QMAX
p->color = 0 + (rand() % 4);
#endif
for (j=0 ; j<3 ; j++)
{
p->org[j] = origin[j] + crand()*3;
}
p->vel[2] = 20 + crand()*5;
}
}
void CL_ForceWall (vec3_t start, vec3_t end, int color8)
{
vec3_t move;
vec3_t vec;
#ifdef QMAX
vec3_t color = { color8red(color8), color8green(color8), color8blue(color8)};
#else
int j;
cparticle_t *p;
#endif
float len;
VectorCopy (start, move);
VectorSubtract (end, start, vec);
len = VectorNormalize (vec);
VectorScale (vec, 4, vec);
// FIXME: this is a really silly way to have a loop
while (len > 0)
{
len -= 4;
if (!free_particles)
return;
if (frand() > 0.3)
{
#ifdef QMAX
setupParticle (
0, 0, 0,
move[0] + crand()*3, move[1] + crand()*3, move[2] + crand()*3,
0, 0, -40 - (crand()*10),
0, 0, 0,
color[0]+5, color[1]+5, color[2]+5,
0, 0, 0,
1, -1.0 / (3.0+frand()*0.5),
5, 0,
particle_generic,
0,
NULL,0);
#else
p = free_particles;
free_particles = p->next;
p->next = active_particles;
active_particles = p;
VectorClear (p->accel);
p->time = cl.time;
p->alpha = 1.0;
p->alphavel = -1.0 / (3.0+frand()*0.5);
p->color = color8;
for (j=0 ; j<3 ; j++)
{
p->org[j] = move[j] + crand()*3;
p->accel[j] = 0;
}
p->vel[0] = 0;
p->vel[1] = 0;
p->vel[2] = -40 - (crand()*10);
#endif
}
VectorAdd (move, vec, move);
}
}
