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Routines |
| Prev: 47592 | Up: Map | Next: 47665 |
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Used by the routine at 47502.
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| 47603 | LD A,(23479) | Load menu hand cursor's current y-coordinate into A | ||
| 47606 | OR A | If coordinate is zero... | ||
| 47607 | JP Z,47571 | ...then jump to 47571 (return to menu input handling routine) | ||
| 47610 | LD (23478),A | Store y-coordinate (pixels) at 23478 | ||
| 47613 | PUSH AF | Store AF (A = menu hand cursor's y-coordinate, in pixels) | ||
| 47614 | ADD A,5 | Add five (as the "finger" of the cursor naturally points five pixels below the cursor's actual position) | ||
| 47616 | RRCA | Divide this new y-coordinate by eight to get y-coordinate in characters... | ||
| 47617 | RRCA | ... | ||
| 47618 | RRCA | ... | ||
| 47619 | AND 31 | ... | ||
| 47621 | LD C,A | Load this y-coordinate into C | ||
| 47622 | POP AF | Restore AF (A = menu hand cursor's y-coordinate, in pixels) | ||
| 47623 | DEC A | Decrease y-coordinate (pixels) by two... | ||
| 47624 | DEC A | ... | ||
| 47625 | LD (23479),A | Store new y-coordinate (in pixels) | ||
| 47628 | PUSH BC | Store BC (C = y-coordinate, in characters and before move, of menu hand cursor's finger) | ||
| 47629 | CALL 64354 | Scroll a region of the display file up two pixel rows without wrapping... | ||
| 47632 | CALL 64354 | ... | ||
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This entry point is used by the routine at 47665.
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| 47635 | POP BC | Restore BC (C = y-coordinate, in characters and before move, of menu hand cursor's finger) | ||
| 47636 | LD A,(23479) | Load menu hand cursor's new y-coordinate (in pixels) into A | ||
| 47639 | ADD A,5 | Add five (as the "finger" of the cursor naturally points five pixels below the cursor's actual position) | ||
| 47641 | RRCA | Divide this new y-coordinate by eight to get y-coordinate in characters... | ||
| 47642 | RRCA | ... | ||
| 47643 | RRCA | ... | ||
| 47644 | AND 31 | ... | ||
| 47646 | CP C | If new y-coordinate of menu hand cursor (in characters) is the same as its previous y-coordinate... | ||
| 47647 | JP Z,47571 | ...then jump to 47571 (return to menu input handling routine) | ||
| 47650 | LD A,(23478) | Load A with previous y-coordinate in pixels... | ||
| 47653 | CALL 47731 | ...and invert INK and PAPER bits to remove highlighting at this location | ||
| 47656 | LD A,(23479) | Load A with new y-coordinate in pixels... | ||
| 47659 | CALL 47731 | and invert INK and PAPER bits to apply highlighting at this location | ||
| 47662 | JP 47571 | Jump to 47571 (return to menu input handling routine) | ||
| Prev: 47592 | Up: Map | Next: 47665 |