Function CreateRandomParticles

Descent3/viseffect.cpp:898–931

Creates a some particles that go in random directions

// 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) {
  // Create some sparks
  float tenth_life = life / 10.0;
  float tenth_size = size / 10.0;

  for (int i = 0; i < num_sparks; i++) {
    int sparknum;

    sparknum = VisEffectCreate(VIS_FIREBALL, PARTICLE_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->size = size + (((ps_rand() % 11) - 5) * tenth_size);
      vis->flags |= VF_USES_LIFELEFT;
      float lifetime = life + (((ps_rand() % 11) - 5) * tenth_life);
      vis->lifeleft = lifetime;
      vis->lifetime = lifetime;
      vis->custom_handle = bm_handle;
    }
  }
}

// Draws a weapons fading line
void DrawVisFadingLine(vis_effect *vis) {