To prevent performance degradation, check the floor the player is currently on and scan up to 1 floor above and below. For example, if the player is on the 2nd floor, only the 2nd, 1st, and 3rd floors will be scanned.

Also, since the player has to be more than 15 meters away from the blood for it to be removed, it does not work properly in small buildings like watchtowers. Therefore, when the player is on the 2nd floor or higher, the minimum distance for blood removal has been changed to 5 meters.

Now, when cleaning up blood, the Z-axis is also taken into consideration. Therefore, blood on the 2nd floor and above will be removed as well.

I have fixed the error that occurs when a new character is created after the player dies.