Routines
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C3AA: Play Bump Sound
Used by the routines at UpdateCreature and UpdatePlayerBody.
Plays a burst of noise, if the object at IX has been drawn in the view (bit 1 of its flags).
Input
IX Object
PlayBumpSound C3AA BIT 1,(IX+$07) Return if the object has not been drawn in the view, because it can't be heard.
C3AE RET Z
C3AF LD C,$10 Set a counter for sixteen tones.
PlayBumpSound_Loop C3B1 LD A,C Play a short tone, with a pitch that depends on the counter, and loop back until all sixteen tones have been played.
C3B2 XOR $A5
C3B4 ADD A,C
C3B5 LD B,A
C3B6 CALL PlaySquareWave
C3B9 DEC C
C3BA JR NZ,PlayBumpSound_Loop
C3BC RET Return.
View the equivalent code in;
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