这里是project的需要，可以做的请找我要这个project的template
：Both the boss and the player character will have an HP displayed on the HUD.
Player’s projectile weapon shoots and decreases the boss’ HP
Boss’ projectile weapon shoots and decreases the player’s HP
Player wins when Boss’ HP drops to 0; Player loses when player’s HP drops to 0.
The boss floats around in the area
The boss will have the following attack patterns:
Shoots three projectiles at the player in succession
Pause for a moment
Shoots four projectiles at the player in succession
Pause for a moment
Shoots five projectiles at the player in succession
Pause for a moment
Repeat