Routines
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BF08: Play Appearing Sound
Used by the routine at HandlerAppearingNastie.
Plays six cycles of a tone with a half-period which depends on the low three bits of the sprite ID, so the sound changes as the sprite changes.
Input
IX Actor record
PlayAppearingSound BF08 LD A,(IX+$00) Fetch the sprite ID of the actor.
BF0B CPL Flip the bits.
BF0C RRCA Rotate right three times.
BF0D RRCA
BF0E RRCA
BF0F AND %11100000 Keep only bits 5-7.
BF11 LD B,A Store the result in B (the half-period).
BF12 LD C,$06 Set the number of cycles in C to 06.
BF14 JP PlayWaveSequence Jump to PlayWaveSequence to play the sound.
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