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Routines |
| Prev: 40338 | Up: Map | Next: 40406 |
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Used by the routine at 40338.
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| 40357 | LD A,36 | Load A with 36 (object index of Golden Egg) | ||
| 40359 | LD B,6 | Load B with 6 (as there are six eggs) | ||
| 40361 | PUSH BC | Store BC (B = remaining number of eggs to process) | ||
| 40362 | PUSH AF | Store AF (A = object index of current egg) | ||
| 40363 | LD C,A | Load BC with three times object index of current egg... | ||
| 40364 | ADD A,A | ... | ||
| 40365 | ADD A,C | ... | ||
| 40366 | LD C,A | ... | ||
| 40367 | LD B,0 | ... | ||
| 40369 | LD HL,24922 | Point HL at start of objects' current positions table... | ||
| 40372 | ADD HL,BC | ...and add BC as offset | ||
| 40373 | LD A,(HL) | Load A with room of current egg... | ||
| 40374 | CP 14 | ...and if this is not 14 (Outdoors, 13, Wishing Well)... | ||
| 40376 | JR NZ,40395 | ...then skip ahead to 40395 | ||
| 40378 | INC HL | Advance HL to y-coordinate of object... | ||
| 40379 | INC HL | ... | ||
| 40380 | LD A,(HL) | ...and load into A | ||
| 40381 | CP 19 | If this is not 19... | ||
| 40383 | JR NZ,40395 | ...then skip ahead to 40395 | ||
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The instructions between 40385 and 40392 are only executed when the current egg is both in room 14 (Outdoors, 13, Wishing Well) and has a y-coordinate of 19, i.e. the egg has been dropped on top of (down) the well. The index of the dropped object (egg) is stored at 23365.
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| 40385 | POP AF | Restore AF (A = object index of current egg) | ||
| 40386 | LD (23365),A | Store object index of current egg at 23365, i.e. set wish-pending flag | ||
| 40389 | PUSH AF | Store AF (A = object index of current egg) | ||
| 40390 | DEC HL | Move HL back to room of object... | ||
| 40391 | DEC HL | ... | ||
| 40392 | LD (40401),HL | ...and store address in operand of instruction at 40400 | ||
| 40395 | POP AF | Restore AF (A = object index of current egg) | ||
| 40396 | POP BC | Restore BC (B = remaining number of eggs to process) | ||
| 40397 | INC A | Advance A to next egg | ||
| 40398 | DJNZ 40361 | Decrease remaining number of eggs to process and loop back to 40361 if not zero | ||
| 40400 | LD HL,0 | Load HL with address of current position data for dropped egg... | ||
| 40403 | LD (HL),99 | ...and set its current room to 99 | ||
| 40405 | RET | Return | ||
| Prev: 40338 | Up: Map | Next: 40406 |