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Routines |
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Sixteen bytes a record rather than eight, and no room test -- every monster is dispatched every pass wherever it is. That is what keeps the castle alive behind the player rather than freezing rooms they have left.
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| MAIN_LOOP_MONSTERS | 7E13 | LD DE,$0010 | Sixteen bytes to the next monster. | |
| 7E16 | ADD IX,DE | |||
| 7E18 | PUSH IX | Until the door table is reached. | ||
| 7E1A | POP HL | |||
| 7E1B | LD DE,$EEE0 | |||
| 7E1E | AND A | |||
| 7E1F | SBC HL,DE | |||
| 7E21 | JR C,NEXT_MONSTER | |||
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This entry point is used by the routine at MAIN_LOOP.
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| ROOM_LIST_PASS | 7E23 | LD A,($EA91) | ||
| 7E26 | LD L,A | |||
| 7E27 | LD H,$00 | |||
| 7E29 | ADD HL,HL | |||
| 7E2A | LD BC,ROOM_CONTENTS | |||
| 7E2D | ADD HL,BC | |||
| 7E2E | LD A,(HL) | |||
| 7E2F | INC HL | |||
| 7E30 | LD H,(HL) | |||
| 7E31 | LD L,A | |||
| 7E32 | LD ($5E1B),HL | |||
| NEXT_IN_LIST | 7E35 | LD HL,($5E1B) | ||
| 7E38 | LD A,(HL) | |||
| 7E39 | INC HL | |||
| 7E3A | INC HL | |||
| 7E3B | LD ($5E1B),HL | |||
| 7E3E | DEC HL | |||
| 7E3F | LD H,(HL) | |||
| 7E40 | LD L,A | |||
| 7E41 | OR H | |||
| 7E42 | JR NZ,DISPATCH_FROM_LIST | |||
| 7E44 | LD HL,($5E12) | |||
| 7E47 | INC HL | |||
| 7E48 | LD ($5E12),HL | |||
| 7E4B | LD HL,$5E14 | |||
| 7E4E | BIT 0,(HL) | |||
| 7E50 | JR NZ,MAIN_LOOP_MONSTERS_0 | |||
| 7E52 | CALL DRAW_ROOM_CONTENTS | |||
| MAIN_LOOP_MONSTERS_0 | 7E55 | LD HL,$5E14 | ||
| 7E58 | SET 0,(HL) | |||
| 7E5A | LD HL,($5E05) | |||
| 7E5D | LD DE,($5C78) | |||
| 7E61 | ADD HL,DE | |||
| 7E62 | LD A,($5E12) | |||
| 7E65 | ADD A,L | |||
| 7E66 | LD L,A | |||
| 7E67 | LD ($5E05),HL | |||
| 7E6A | CALL READ_PICKUP_KEY | |||
| 7E6D | CALL PAUSE | |||
| 7E70 | CALL REGROW_FOOD | |||
| 7E73 | LD A,($EA91) | |||
| 7E76 | CP $8E | |||
| 7E78 | JP Z,SHOW_END_SCREEN | |||
| 7E7B | JP MAIN_LOOP | |||
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