A duck: The shadow has vanished twice

The first mod made by a newbie! Due to lack of experience, there might be some unexpected bugs. If you encounter any, please leave a comment to let me fix them! This mod gives ducks a second chance to respawn. After entering a map and dying for the first time, you can click the fire key to respawn with half of your maximum health! Of course, you can also click the aim key to cancel respawn and go home directly~ A sudden whim, hope you like it!