Nightshade: Routine at 55079

55079: Update Speed Bonus

The routine for objects of type 2, the bonuses that make the player move faster. 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 speed is raised for 255 frames.
Vanish if the player is too far away.
UpdateSpeedBonus	55079	LD C,4	Set the distance to 4 cells and check whether the bonus is that close to the player.
	55081	CALL CheckPlayerClose
	55084	JR C,UpdateSpeedBonus_Close	Jump to UpdateSpeedBonus_Close if it is.
	55086	LD (IX+0),0	Remove the bonus, because the player is too far away, and return.
	55090	RET
Raise the player's speed when the bonus is touched.
UpdateSpeedBonus_Close	55091	CALL CheckPlayerCollision	Return if the bonus is not touching the player.
	55094	RET NC	Return if the bonus is not touching the player.
	55095	LD (IX+0),12	Turn the bonus into a burst.
	55099	LD A,255	Make the speed bonus last for 255 frames.
	55101	LD (48117),A	Make the speed bonus last for 255 frames.
	55104	LD A,18	Raise the player's top speed to 18.
	55106	LD (48062),A	Raise the player's top speed to 18.
	55109	LD HL,261	Start the speed bonus sound, which is sound effect 1 and has five notes.
	55112	LD (48121),HL
	55115	RET	Return.