|
Routines |
| Prev: 61638 | Up: Map | Next: 61774 |
|
Used by the routine at 61860.
|
||||
| 61720 | LD A,(24843) | Load Magic Knight's current frame index into A... | ||
| 61723 | LD B,A | ...multiply by 48... | ||
| 61724 | ADD A,A | ... | ||
| 61725 | ADD A,B | ... | ||
| 61726 | ADD A,A | ... | ||
| 61727 | ADD A,A | ... | ||
| 61728 | ADD A,A | ... | ||
| 61729 | ADD A,A | ... | ||
| 61730 | LD L,A | ...load into HL... | ||
| 61731 | LD H,0 | ... | ||
| 61733 | ADD HL,HL | ...and double again to give 96 times original value, as graphic data for Magic Knight's frames are 96 bytes each | ||
| 61734 | LD A,(23417) | If Magic-Knight-facing-left flag is reset... | ||
| 61737 | OR A | ... | ||
| 61738 | JR Z,61744 | ...then skip ahead to 61744 | ||
| 61740 | LD BC,384 | Advance HL by 384 bytes... | ||
| 61743 | ADD HL,BC | ...i.e. prepare to use left-facing graphic data, rather than right-facing... | ||
| 61744 | PUSH HL | Copy value in HL to IX... | ||
| 61745 | POP IX | ... | ||
| 61747 | LD DE,26968 | Point DE at start of graphic data for Magic Knight facing right, frame 1 (mask) | ||
| 61750 | ADD HL,DE | Add HL as offset in HL (HL now points to start of graphic data for Magic Knight's current frame mask) | ||
| 61751 | LD DE,26200 | Point DE at start of graphic data for Magic Knight facing right, frame 1 | ||
| 61754 | ADD IX,DE | Add IX as offset in IX (IX now points to start of graphic data for Magic Knight's current frame) | ||
| 61756 | LD DE,24576 | Point DE at table of bitmap data for Magic Knight at his current location | ||
| 61759 | LD B,96 | Load B with 96, as Magic Knight's bitmap graphic data is 96 bytes per frame | ||
| 61761 | LD A,(DE) | Load current background bitmap byte into A | ||
| 61762 | AND (HL) | Apply mask to bitmap data | ||
| 61763 | OR (IX+0) | Overlay Magic Knight bitmap graphic data | ||
| 61766 | LD (DE),A | Store result back into table of background bitmap data | ||
| 61767 | INC HL | Advance HL to next byte in Magic Knight mask bitmap data | ||
| 61768 | INC DE | Advance DE to next byte in background graphic bitmap data | ||
| 61769 | INC IX | Advance IX to next byte in Magic Knight graphic bitmap data | ||
| 61771 | DJNZ 61761 | Decrease B (remaining number of bytes to process) and loop back to 61761 | ||
| 61773 | RET | Return | ||
| Prev: 61638 | Up: Map | Next: 61774 |