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Routines |
| Prev: EF91 | Up: Map | Next: F046 |
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| EFC7 | LD A,(IY+$05) | Get the X co-ordinate. | ||
| EFCA | SUB $08 | Move back 8 columns. | ||
| EFCC | CP $E0 | If the co-ordinate is greater than E0 then set it to that. | ||
| EFCE | JR C,$EFD2 | |||
| EFD0 | LD A,$E0 | |||
| EFD2 | SRL A | Divide it by 8 and set the result in E as the column to draw at. | ||
| EFD4 | SRL A | |||
| EFD6 | SRL A | |||
| EFD8 | LD E,A | |||
| EFD9 | LD D,$17 | Set the row to 17. | ||
| EFDB | LD HL,$7F16 | Point HL at the data for the hole. | ||
| EFDE | CALL $B82B | Patch the display to overwrite graphics. | ||
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A hole has opened, so drop the player down to it.
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| EFE1 | LD A,(IY+$0A) | Get the Y co-ordinate. | ||
| EFE4 | ADD A,$04 | Drop down four rows. | ||
| EFE6 | CP $A0 | If the co-ordinate is creater than A0 set it to that. | ||
| EFE8 | JR C,$EFEC | |||
| EFEA | LD A,$A0 | |||
| EFEC | LD (IY+$0A),A | Set the new Y co-ordinate. | ||
| EFEF | CALL $81AE | Move everything on screen. | ||
| EFF2 | LD A,(IY+$0A) | Get the Y co-ordinate. | ||
| EFF5 | CP $A0 | Is it A0? | ||
| EFF7 | JR NZ,$EFE1 | Jump back if not to fall some more. | ||
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The player has fallen into the hole, so update for the chase sequence.
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| EFF9 | LD (IY+$00),$00 | Set the frame counter to 0. | ||
| EFFD | LD A,(IY-$3C) | Get the current direction of the sprite. (BC2B) | ||
| F000 | OR A | Is it 0 (left)? | ||
| F001 | CALL NZ,$81D4 | If not, need to flip the sprite around to be left-facing. | ||
| F004 | LD A,$F0 | Set the shark's X co-ordinate to F0. | ||
| F006 | LD ($F0BD),A | |||
| F009 | LD HL,$F0B7 | Point HL directly at the background graphics. (F0B7) | ||
| F00C | CALL $B902 | Clear the playing area. | ||
| F00F | CALL $B969 | Draw the background graphics. | ||
| F012 | LD (IY+$05),$DA | Set the X co-ordinate to DA. | ||
| F016 | LD (IY+$0A),$3C | Set the Y co-ordinate to 3C. | ||
| F01A | LD A,(IY+$0A) | Get the Y co-ordinate. | ||
| F01D | CP $98 | Is the player on the ground yet? | ||
| F01F | JR Z,$F026 | Jump forward if so. | ||
| F021 | ADD A,$04 | Otherwise just drop down a row. | ||
| F023 | LD (IY+$0A),A | |||
| F026 | CALL $EEA2 | Initialize the sprite buffers. | ||
| F029 | CALL $F057 | Update the shark. | ||
| F02C | CALL $F0C0 | Check for player movement. | ||
| F02F | CALL $B0E6 | Update the sprite buffer. | ||
| F032 | CALL $B9FB | Put the sprites on screen. | ||
| F035 | LD A,(IY+$05) | Get the Y co-ordinate. | ||
| F038 | OR A | Is it 0? | ||
| F039 | JR NZ,$F01A | Jump back if it's not. | ||
| F03B | LD (IY+$0F),$1F | Set the Y co-ordinate to 1F. | ||
| F03F | LD (IY+$05),$F0 | Set the X co-ordinate to F0. | ||
| F043 | JP $EE8D | Move to the sewer. | ||
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