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Routines |
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Used by the routine at FireProjectile.
Makes the sound of a projectile that has been fired, from thirty-two single cycles of a tone whose pitch changes each cycle, in a way that depends on the value that B has when the routine is called.
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Play thirty-two cycles of a changing tone.
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| PlayProjectileSound | 54825 | LD C,32 | Set the number of cycles to 32. | |||||
| PlayProjectileSound_Loop | 54827 | LD A,C | Fetch the number of cycles left. | |||||
| 54828 | SUB B | Take away the pitch. | ||||||
| 54829 | LD B,A | Set it as the new pitch. | ||||||
| 54830 | CALL PlaySquareWave | Call PlaySquareWave to make a cycle of the tone. | ||||||
| 54833 | DEC C | Count the cycle. | ||||||
| 54834 | JR NZ,PlayProjectileSound_Loop | Jump to PlayProjectileSound_Loop until all of the cycles have been made. | ||||||
| 54836 | RET | Return. | ||||||
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View the equivalent code in;
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