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Routines |
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Used by the routines at HandleOutlaw, HandleBystander, HandleBullet, MovePlayerForward and CheckWallsEachWay.
Checks whether an object can move in the direction of its heading without going into a wall. A wall changes the speeds so that the object stops, and sets bit 0 of the flags.
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Clear bit 0 of the flags, then run the routine for the heading.
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| TestMove | 52620 | RES 0,(IX+7) | Clear bit 0 of the flags of the object. | |||||||||
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This entry point is used by the routines at HandleBullet and CheckWallsEachWay.
Run the routine for the heading, without clearing the flag.
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| CheckWalls | 52624 | LD A,(IX+6) | Fetch the heading. | |||||||||
| 52627 | RLCA | Move the heading into the lowest two bits. | ||||||||||
| 52628 | RLCA | |||||||||||
| 52629 | AND %00000011 | Keep only the heading. | ||||||||||
| 52631 | LD BC,52637 | Point BC at CheckWallsRoutines. | ||||||||||
| 52634 | JP RunTableRoutine | Jump to RunTableRoutine. | ||||||||||
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View the equivalent code in;
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