Function DrawVisSnowflake

Descent3/viseffect.cpp:1143–1177

Draws a snowflake

// Draws a snowflake
void DrawVisSnowflake(vis_effect *vis) {
  float norm_time;
  float time_live = Gametime - vis->creation_time;
  float size = vis->size;

  int visnum = vis - VisEffects;
  int bm_handle;
  fireball *fb = &Fireballs[vis->id];

  norm_time = time_live / vis->lifetime;

  if (norm_time >= 1)
    norm_time = .99999f; // don't go over!

  // size*=(1-(norm_time/2));

  bm_handle = fb->bm_handle;

  float val;

  val = 1.0 - (norm_time);

  rend_SetAlphaValue(val * .6 * 255);
  rend_SetOverlayType(OT_NONE);
  // rend_SetWrapType (WT_CLAMP);
  rend_SetLighting(LS_NONE);
  // rend_SetZBufferState (0);
  rend_SetAlphaType(AT_SATURATE_TEXTURE);

  ddgr_color color = GR_16_TO_COLOR(vis->lighting_color);
  g3_DrawBitmap(&vis->pos, size, (size * bm_h(bm_handle, 0)) / bm_w(bm_handle, 0), bm_handle, color);

  // rend_SetZBufferState (1);
  // rend_SetWrapType (WT_WRAP);
}

// Draws a lighting bolt from one area to another
// Velocity.x is how much randomness goes into drawing