Cyberun: Routine at 29355

29355: Play Explosion Sound

Used by the routine at UpdateEnemies. Plays the sound of the explosion of the ship, for each step of the counter at 36691 until it reaches 45. It makes a warble first and then either a falling note (every eighth step), noise (on the odd steps) or nothing.
PlayExplosionSound	29355	LD A,(36691)	The ship state.
	29358	CP 45	Return if A is 45 or more.
	29360	RET NC	Return if A is 45 or more.
	29361	SUB 10	Subtract 10 from A.
	29363	CALL PlayWarble	Call PlayWarble.
	29366	LD A,(36691)	The ship state.
	29369	LD B,A	Keep the explosion step.
	29370	AND %00000111	Keep the bits of A that are set in 7.
	29372	JR Z,PlayExplosionHitSound	Jump to PlayExplosionHitSound if the zero flag is set.
	29374	BIT 0,B	Return if bit 0 of B is clear.
	29376	RET Z	Return if bit 0 of B is clear.
	29377	LD A,B	The pattern comes from the step.
	29378	SRL A	Shift A right.
	29380	LD E,A	That is the click pattern.
	29381	LD C,11	This step of the explosion is 11 clicks.
	29383	JP PlayNoise	Jump to PlayNoise.