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C463: Play Materialise Sound
Used by the routine at UpdatePlayerLegs.
Plays a tone with a pitch that depends on the player's materialise timer (MaterialiseTimer).
PlayMaterialiseSound C463 LD A,($BC02) Work out the pitch of the tone from the timer, so that it rises as the timer counts down, and set the length of the tone to 08.
C466 CPL
C467 LD B,A
C468 LD C,$08
Plays a tone.
PlayTone C46A CALL PlaySquareWave Play a cycle of the tone, and loop back until the whole tone has been played.
C46D DEC C
C46E JR NZ,PlayTone
C470 RET Return.
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