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Routines |
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Used by the routine at HandlePlayerLegs.
Makes the player jump if the jump control is pressed. The player cannot jump while entering a room, while already jumping, or while falling quickly.
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Start a jump if the control is pressed and the player is ready.
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| HandleJump | 51528 | BIT 3,C | Test the jump control. | |||||||
| 51530 | RET Z | Return if it is not pressed. | ||||||||
| 51531 | LD A,(IX+12) | Fetch the flags of the player. | ||||||||
| 51534 | AND %11110000 | Keep the counter of the player entering the room. | ||||||||
| 51536 | RET NZ | Return if the player is entering the room. | ||||||||
| 51537 | BIT 3,(IX+12) | Test whether the player is already jumping. | ||||||||
| 51541 | RET NZ | Return if it is. | ||||||||
| 51542 | LD A,(IX+11) | Fetch the speed in Z and add one to it. | ||||||||
| 51545 | INC A | |||||||||
| 51546 | RET M | Return if it was lower than 255, as the player is falling. | ||||||||
| 51547 | SET 3,(IX+12) | Flag the player as jumping. | ||||||||
| 51551 | LD (IX+11),8 | Set the speed in Z to 8. | ||||||||
| 51555 | PUSH BC | Stash the controls on the stack. | ||||||||
| 51556 | CALL PlayJumpSound | Play the sound of a jump. | ||||||||
| 51559 | POP BC | Restore the controls from the stack. | ||||||||
| 51560 | RET | Return. | ||||||||
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View the equivalent code in;
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