/**
* @brief Spawns a smoke field that is available for some rounds
* @param[in] vec The position in the world that is the center of the smoke field
* @param[in] particle The id of the particle (see ptl_*.ufo script files in base/ufos)
* @param[in] rounds The number of rounds the particle will last
* @todo Does '2 rounds' mean: created in player's turn, last through the aliens turn, vanish before the 2nd player's turn ??
* @param[in] radius The max distance of a cell from the center to get a particle
*/
void G_SpawnSmokeField (const vec3_t vec, const char *particle, int rounds, vec_t radius)
{
vec_t x, y;
G_SpawnSmoke(vec, particle, rounds);
/* for all cells in a square of +/- radius */
for (x = vec[0] - radius; x <= vec[0] + radius; x += UNIT_SIZE) {
for (y = vec[1] - radius; y <= vec[1] + radius; y += UNIT_SIZE) {
vec3_t end;
trace_t tr;
VectorSet(end, x, y, vec[2]);
/* cut off the edges of the square to resemble a circle */
if (VectorDist(end, vec) > radius)
continue;
tr = G_Trace(vec, end, NULL, MASK_SMOKE_AND_FIRE);
/* trace didn't reach the target - something was hit before */
if (tr.fraction < 1.0 || (tr.contentFlags & CONTENTS_WATER)) {
continue;
}
G_SpawnSmoke(end, particle, rounds);
}
}
}
static void G_SpawnFieldPart (const entity_type_t fieldtype, const vec3_t vec, const char* particle, int rounds, int damage)
{
switch (fieldtype) {
case ET_SMOKE:
G_SpawnSmoke(vec, particle, rounds);
break;
case ET_FIRE:
G_SpawnFire(vec, particle, rounds, damage);
break;
case ET_SMOKESTUN:
G_SpawnStunSmoke(vec, particle, rounds, damage);
break;
default:
break;
}
}
