The tower will say what balloon it is pointing at, it has 150 pixels of range. It will point at the balloon with the lowest ID that is in range. ====================*note*==================== It will say 5 if it's not pointing at anything ============================================= Each balloon says what it's ID is. Press the 1-5 keys to change what balloon is on your mouse.
Credit to @mysticCr8tor for the get distance to and point towards blocks. Other than that, it was all me.