Function AddPersistentHUDMessage

Descent3/hudmessage.cpp:1388–1402

adds a persistent hud message that is timed, or infinite until removed for infinite, time = -1.0f for centering on an axis, set either x or y to -1.

// for infinite, time = -1.0f
// for centering on an axis, set either x or y to -1.
void AddPersistentHUDMessage(ddgr_color color, int x, int y, float time, int flags, int sound_index, const char *fmt,
                             ...) {
  std::va_list args;
  char temp_message[HUD_MESSAGE_LENGTH * 2];

  // start new message
  va_start(args, fmt);
  std::vsnprintf(temp_message, HUD_MESSAGE_LENGTH * 2, fmt, args);
  va_end(args);

  if (Hud_persistent_msg_id != HUD_INVALID_ID) // already one active, so queue the new one
    QueuePersistentHUDMessage(color, x, y, time, flags, sound_index, temp_message);
  else
    StartPersistentHUDMessage(color, x, y, time, flags, sound_index, temp_message);
}

// Clears the current message, and plays the next in the queue
void ClearPersistentHUDMessage() {