Function CreateRandomSparks

Descent3/viseffect.cpp:852–895

Creates a some sparks that go in random directions

// Creates a some sparks that go in random directions
void CreateRandomSparks(int num_sparks, vector *pos, int roomnum, int which_index, float force_scalar) {
  // Make more sparks if Katmai
  if (Katmai)
    num_sparks *= 2;

  // Create some sparks
  for (int i = 0; i < num_sparks; i++) {
    int sparknum;
    int index;

    if (ps_rand() % 2)
      index = HOT_SPARK_INDEX;
    else
      index = COOL_SPARK_INDEX;

    if (which_index != -1)
      index = which_index;

    sparknum = VisEffectCreate(VIS_FIREBALL, index, roomnum, pos);

    if (sparknum >= 0) {
      vis_effect *vis = &VisEffects[sparknum];

      vis->movement_type = MT_PHYSICS;
      vis->mass = 100;
      vis->drag = .1f;

      vis->phys_flags |= PF_GRAVITY | PF_NO_COLLIDE;

      vis->velocity.x = (ps_rand() % 100) - 50;
      vis->velocity.y = (ps_rand() % 100);
      vis->velocity.z = (ps_rand() % 100) - 50;

      vm_NormalizeVectorFast(&vis->velocity);
      vis->velocity *= 10 + (ps_rand() % 10);
      vis->velocity *= force_scalar;
      vis->size = .2 + ((ps_rand() % 10) * .01);
      vis->flags |= VF_USES_LIFELEFT;
      float lifetime = 1 + ((ps_rand() % 10) * .15);
      vis->lifeleft = lifetime;
      vis->lifetime = lifetime;
    }
  }
}

// Creates a some particles that go in random directions
void CreateRandomParticles(int num_sparks, vector *pos, int roomnum, int bm_handle, float size, float life) {