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Routines |
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Used by the routine at HandlePlayerLegs.
Starts a jump, if the jump key is pressed and the player is standing on the ground and was not already jumping. The jump is started by giving the player an upward speed of 8, which is cut down by gravity in MovePlayer.
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Return unless the player can start a jump.
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| HandleJump | 50540 | BIT 3,C | Return if the jump key is not pressed. | |||||||
| 50542 | RET Z | |||||||||
| 50543 | LD A,(IX+12) | Fetch the collision flags. | ||||||||
| 50546 | AND %11110000 | Keep only the countdown from entering the room. | ||||||||
| 50548 | RET NZ | Return if the player has only just entered the room. | ||||||||
| 50549 | BIT 3,(IX+12) | Return if the player is already jumping. | ||||||||
| 50553 | RET NZ | |||||||||
| 50554 | BIT 2,(IX+12) | Return if the player is not on the ground. | ||||||||
| 50558 | RET Z | |||||||||
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Start the jump and play the sound.
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| 50559 | SET 3,(IX+12) | Flag that the player is jumping. | ||||||||
| 50563 | LD (IX+11),8 | Set the speed along z to 8. | ||||||||
| 50567 | PUSH BC | Stash the controls on the stack. | ||||||||
| 50568 | CALL PlayJumpSound | Call PlayJumpSound to make the sound of a jump. | ||||||||
| 50571 | POP BC | Restore the controls from the stack. | ||||||||
| 50572 | RET | Return. | ||||||||
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