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Routines |
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The handler for the near side of an arch (object 02). As an arch does not move, its speeds are used to keep the position of the middle of the doorway: the middle is 0D further along the y axis than the arch, or 0D further back along the x axis if the sprite is flipped. The player is flagged if near the arch, and is nudged towards the middle of the doorway.
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Unflipped: doorway 0D along y.
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| HandleNearArch | BFEA | BIT 6,(IX+$07) | Jump to HandleNearArch_Flipped if the sprite is flipped. | |||||
| BFEE | JR NZ,HandleNearArch_Flipped | |||||||
| BFF0 | LD HL,$F9FA | Set HL to F9FA. | ||||||
| BFF3 | CALL SetPixelAdjustments_Store | Call SetPixelAdjustments_Store. | ||||||
| BFF6 | LD A,(IX+$02) | Fetch the y position of the arch. | ||||||
| BFF9 | ADD A,$0D | Add 0D. | ||||||
| BFFB | LD (IX+$0A),A | Set it as the y of the doorway middle. | ||||||
| BFFE | LD A,(IX+$01) | Fetch the x position of the arch. | ||||||
| C001 | LD (IX+$09),A | Set it as the x of the doorway middle. | ||||||
| C004 | LD HL,$060F | Set HL to 060F. | ||||||
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Keep z and flag or nudge the player.
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| HandleNearArch_Near | C007 | LD A,(IX+$03) | Fetch the z position of the arch. | |||||
| C00A | LD (IX+$0B),A | Set it as the z of the doorway middle. | ||||||
| C00D | CALL FlagPlayerNearArch | Call FlagPlayerNearArch. | ||||||
| C010 | JP NudgePlayerToArch | Jump to NudgePlayerToArch. | ||||||
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Flipped: doorway 0D back along x.
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| HandleNearArch_Flipped | C013 | LD HL,$FAF6 | Set HL to FAF6. | |||||
| C016 | CALL SetPixelAdjustments_Store | Call SetPixelAdjustments_Store. | ||||||
| C019 | LD A,(IX+$01) | Fetch the x position of the arch. | ||||||
| C01C | SUB $0D | Subtract 0D. | ||||||
| C01E | LD (IX+$09),A | Set it as the x of the doorway middle. | ||||||
| C021 | LD A,(IX+$02) | Fetch the y position of the arch. | ||||||
| C024 | LD (IX+$0A),A | Set it as the y of the doorway middle. | ||||||
| C027 | LD HL,$0F06 | Set HL to 0F06. | ||||||
| C02A | JR HandleNearArch_Near | Jump to HandleNearArch_Near. | ||||||
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View the equivalent code in;
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| Prev: BFD8 | Up: Map | Next: C02C |