Function RenderHUDMessages

Descent3/hudmessage.cpp:1199–1263

Renders all the messages we have in the message list. If HUD_MESSAGE_TIME has elapsed, then punt the oldest message and move the others up one

// Renders all the messages we have in the message list.  If HUD_MESSAGE_TIME has
// elapsed, then punt the oldest message and move the others up one
void RenderHUDMessages() {
  if (Hud_messages_paused)
    return;

  // Render & update the scrolling message list
  RenderScrollingHUDMessages();

  // do persistent hud message system
  if (Hud_persistent_msg_id != HUD_INVALID_ID) {
    if (Hud_persistent_msg_timer != HUD_MSG_PERSISTENT_INFINITE) {
      tHUDItem *item = GetHUDItem(Hud_persistent_msg_id);

      // Update time
      Hud_persistent_msg_timer -= Frametime;

      // Do fadeout
      if (Hud_persistent_msg_flags & HPF_FADEOUT) {
        if (Hud_persistent_msg_timer < FADEOUT_TIME) {
          item->alpha = HUD_ALPHA * Hud_persistent_msg_timer / FADEOUT_TIME;
        }
      }

      if (item && Small_hud_flag) {
        grtext_SetFont(HUD_FONT);
        int16_t l = item->x * Max_window_w / DEFAULT_HUD_WIDTH;
        int16_t t = item->y * Max_window_h / DEFAULT_HUD_HEIGHT;
        int16_t r = l + grtext_GetTextLineWidth(item->data.text) + 10;
        int16_t b = t + grtext_GetTextHeight(item->data.text);
        item->dirty_rect.set(l, t, r, b);
      }

      // Do FreeSpace printing effect
      if (Hud_persistent_msg_id2 != HUD_INVALID_ID) {
        Hud_persistent_msg_char_timer -= Frametime;
        while (Hud_persistent_msg_char_timer < 0) {
          tHUDItem *item = GetHUDItem(Hud_persistent_msg_id);
          tHUDItem *item2 = GetHUDItem(Hud_persistent_msg_id2);

          item->data.text[Hud_persistent_msg_current_len] = item2->data.text[0];
          Hud_persistent_msg_current_len++;

          // Check for more chars
          if (!item->data.text[Hud_persistent_msg_current_len]) {
            FreeHUDItem(Hud_persistent_msg_id2);
            Hud_persistent_msg_id2 = HUD_INVALID_ID;
            Sound_system.StopSoundLooping(Hud_persistent_msg_sound_handle);
            Hud_persistent_msg_sound_handle = SOUND_NONE_INDEX;
            break; // stop printing chars
          } else { // dp next char
            item2->data.text[0] = item->data.text[Hud_persistent_msg_current_len];
            item->data.text[Hud_persistent_msg_current_len] = 0;
            item2->x = item->x + RenderHUDGetTextLineWidth(item->data.text);
            Hud_persistent_msg_char_timer += CHAR_DELAY;
          }
        }
      }

      // If time out, clear message