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Routines |
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Used by the routine at UpdateEnemies.
Plays the sound of the explosion of the ship, for each step of the counter at 8F53 until it reaches 2D. It makes a warble first and then either a falling note (every eighth step), noise (on the odd steps) or nothing.
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| PlayExplosionSound | 72AB | LD A,($8F53) | The ship state. | |
| 72AE | CP $2D | Return if A is 2D or more. | ||
| 72B0 | RET NC | |||
| 72B1 | SUB $0A | Subtract 0A from A. | ||
| 72B3 | CALL PlayWarble | Call PlayWarble. | ||
| 72B6 | LD A,($8F53) | The ship state. | ||
| 72B9 | LD B,A | Keep the explosion step. | ||
| 72BA | AND %00000111 | Keep the bits of A that are set in 07. | ||
| 72BC | JR Z,PlayExplosionHitSound | Jump to PlayExplosionHitSound if the zero flag is set. | ||
| 72BE | BIT 0,B | Return if bit 0 of B is clear. | ||
| 72C0 | RET Z | |||
| 72C1 | LD A,B | The pattern comes from the step. | ||
| 72C2 | SRL A | Shift A right. | ||
| 72C4 | LD E,A | That is the click pattern. | ||
| 72C5 | LD C,$0B | This step of the explosion is 0B clicks. | ||
| 72C7 | JP PlayNoise | Jump to PlayNoise. | ||
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