Function AddBlinkingHUDMessage

Descent3/hudmessage.cpp:638–682

Adds a blinking message to the HUD message list. If the list is already full, punt the top one and move the others up Returns true if message added, or false if message not (because the previous message was the same)

// top one and move the others up
// Returns true if message added, or false if message not (because the previous message was the same)
bool AddBlinkingHUDMessage(const char *format, ...) {
  std::va_list args;
  char *message = NULL;
  char *last_message = NULL;
  char temp_message[HUD_MESSAGE_LENGTH * 2];

  va_start(args, format);
  std::vsnprintf(temp_message, HUD_MESSAGE_LENGTH * 2, format, args);
  va_end(args);

  if (Demo_flags == DF_RECORDING) {
    DemoWriteHudMessage(0, true, temp_message);
  }

  CorrectHudMessage(temp_message);

  if (Num_hud_messages > 0 && !strcmp(temp_message, HUD_messages[Num_hud_messages - 1]))
    return 0; // this is the same message as before, don't print it twice!

  if (Num_hud_messages == MAX_HUD_MESSAGES) {
    // Get rid of top message

    for (int i = 1; i < MAX_HUD_MESSAGES; i++) {
      strcpy(HUD_messages[i - 1], HUD_messages[i]);
      HUD_message_type[i - 1] = HUD_message_type[i];
    }

    Num_hud_messages--;

    Hud_scroll_offset = 0;

    if (!Hud_messages_paused)
      Hud_timer = Gametime;
  }

  if (Num_hud_messages == 0 && !Hud_messages_paused)
    Hud_timer = Gametime;

  strcpy(HUD_messages[Num_hud_messages], temp_message);
  HUD_message_type[Num_hud_messages] = HUD_MESSAGE_BLINKING;

  Num_hud_messages++;

  return 1;
}

// This function takes a HUD messages, ensures it isn't too long, and if it is, it correctly fixes it
void CorrectHudMessage(char *str) {