Nightshade: Routine at D74C

D74C: Update Health Bonus

The routine for objects of type 03, the bonuses that restore the player's health. A bonus vanishes when the player is more than four cells away. When the player touches it, the bonus turns into a burst and the player's health is made full.
Vanish if the player is too far away.
UpdateHealthBonus	D74C	LD C,$04	Set the distance to 04 cells and check whether the bonus is that close to the player.
	D74E	CALL CheckPlayerClose
	D751	JR C,UpdateHealthBonus_Close	Jump to UpdateHealthBonus_Close if it is.
	D753	LD (IX+$00),$00	Remove the bonus, because the player is too far away, and return.
	D757	RET
Restore the player's health when the bonus is touched.
UpdateHealthBonus_Close	D758	CALL CheckPlayerCollision	Return if the bonus is not touching the player.
	D75B	RET NC	Return if the bonus is not touching the player.
	D75C	LD (IX+$00),$0C	Turn the bonus into a burst.
	D760	LD A,$03	Give the player full health.
	D762	LD ($BBF3),A	Give the player full health.
	D765	LD HL,$0207	Start the health bonus sound, which is sound effect 02 and has seven notes.
	D768	LD ($BBF9),HL
	D76B	RET	Return.