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Routines |
| Prev: 8964 | Up: Map | Next: 8A63 |
| 89D4 | LD IX,$8D52 | Point IX at the room flags (8D52). | ||
| 89D8 | LD HL,($5C7B) | Get the room position (5C7B and 5C7C). | ||
| 89DB | LD ($8D7D),HL | Put this in the temporary store (8D7D). | ||
| 89DE | BIT 0,(IX+$00) | |||
| 89E2 | JP NZ,$8B1F | |||
| 89E5 | LD A,($848F) | Get Monty's jump position. | ||
| 89E8 | OR A | Is it 0? | ||
| 89E9 | JP NZ,$8A63 | Move forward to handle jump movement if Monty is already in mid-air. | ||
| 89EC | LD A,($832E) | Get the movement flags? | ||
| 89EF | BIT 7,A | Is Monty jumping? | ||
| 89F1 | JR Z,$8A03 | Move forward if not. | ||
| 89F3 | RES 7,A | Reset the jump flag. | ||
| 89F5 | LD ($849B),A | Store this. | ||
| 89F8 | INC A | Set the initial position on the ground. | ||
| 89F9 | LD ($848F),A | |||
| 89FC | SET 1,(IX+$00) | Set bit 1 to show Monty is jumping and move forward. | ||
| 8A00 | JP $8A63 | |||
| 8A03 | BIT 2,(IX+$00) | Is Monty on a ladder? | ||
| 8A07 | JP NZ,$917A | Move forward if so. | ||
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This entry point is used by the routine at 917A.
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| 8A0A | LD A,($832E) | Get the last input data. | ||
| 8A0D | AND $07 | Remove the jump flag. | ||
| 8A0F | CP $04 | Was there valid input? | ||
| 8A11 | JP Z,$8B34 | Jump forward if not. | ||
| 8A14 | LD B,A | Does the input match the last input when jumping or falling? | ||
| 8A15 | LD A,($849B) | |||
| 8A18 | CP B | |||
| 8A19 | JR NZ,$8A5B | Jump forward if not. | ||
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Act on moving left.
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| 8A1B | CP $02 | Was 'left' pressed? | ||
| 8A1D | JR NZ,$8A48 | Jump forward if not. | ||
| 8A1F | LD A,($5C7B) | Decrease the X co-ordinate by 2. | ||
| 8A22 | SUB $02 | |||
| 8A24 | LD ($5C7B),A | |||
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This entry point is used by the routine at 917A.
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| 8A27 | LD A,($848E) | Cycle Monty's frame between 0-7. | ||
| 8A2A | INC A | |||
| 8A2B | AND $07 | |||
| 8A2D | LD ($848E),A | |||
| 8A30 | SRL A | Halve this to get the right frame offset. | ||
| 8A32 | LD DE,$849C | Point DE at the start of Monty's graphic (849C). | ||
| 8A35 | BIT 2,(IX+$00) | Is Monty on a ladder? | ||
| 8A39 | JR Z,$8A3F | Jump forward if so. | ||
| 8A3B | LD DE,($C51E) | Point DE at the offset for Monty's graphic in this room. | ||
| 8A3F | CALL $8395 | Select the right graphic for Monty. | ||
| 8A42 | LD ($848C),HL | Store this. (848C). | ||
| 8A45 | JP $8B34 | Jump forward and check on room flags. | ||
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Act on moving right?
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| 8A48 | CP $03 | Was 'right' pressed? | ||
| 8A4A | JP NZ,$8B34 | Jump forward if not to check for the room flags. | ||
| 8A4D | LD A,($5C7B) | Increase the X co-ordinate by 2. | ||
| 8A50 | ADD A,$02 | |||
| 8A52 | LD ($5C7B),A | |||
| 8A55 | LD A,($848E) | Get Monty's frame counter. | ||
| 8A58 | DEC A | Decrease by 1 and call the earlier routine to update the graphic. | ||
| 8A59 | JR $8A2B | |||
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This entry point is used by the routine at 917A.
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| 8A5B | LD A,($832E) | Copy the last input to a copy. | ||
| 8A5E | LD ($849B),A | |||
| 8A61 | JR $8A27 | Jump back to draw Monty. | ||
| Prev: 8964 | Up: Map | Next: 8A63 |