|
Routines |
| Prev: 46687 | Up: Map | Next: 46736 |
|
Used by the routines at HandleAttackingTool and PlayLandingSoundOnce.
Plays a burst of noise, using 16 bytes of the ROM as the pitches of beeps. The ROM address is taken from RandomSeed2 and FrameCounter.
|
||||
|
Point at a random stretch of the ROM.
|
||||
| PlayRandomNoise | 46710 | LD A,(23301) | Fetch RandomSeed2. | |
| 46713 | LD L,A | Use it as the low byte of a ROM address. | ||
| 46714 | LD A,(23298) | Fetch FrameCounter. | ||
| 46717 | AND %00011111 | Keep only bits 0 to 4. | ||
| 46719 | LD H,A | Use them as the high byte of the address. | ||
| 46720 | LD E,16 | Set a counter of 16 beeps. | ||
|
Play a beep from each ROM byte.
|
||||
| PlayRandomNoise_NextBeep | 46722 | LD A,(HL) | Fetch a byte of the ROM. | |
| 46723 | INC HL | Move on. | ||
| 46724 | AND %01111111 | Keep only bits 0 to 6. | ||
| 46726 | LD B,A | Keep the pitch in B. | ||
| 46727 | LD C,2 | Set the number of beeps to 2. | ||
| 46729 | CALL PlayWaveSequence | Call PlayWaveSequence. | ||
| 46732 | DEC E | Count down the beeps. | ||
| 46733 | JR NZ,PlayRandomNoise_NextBeep | Jump to PlayRandomNoise_NextBeep until all of them have been played. | ||
| 46735 | RET | Return. | ||
|
View the equivalent code in;
|
||||
| Prev: 46687 | Up: Map | Next: 46736 |