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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 | C948 | BIT 3,C | Test the jump control. | |||||||
| C94A | RET Z | Return if it is not pressed. | ||||||||
| C94B | LD A,(IX+$0C) | Fetch the flags of the player. | ||||||||
| C94E | AND %11110000 | Keep the counter of the player entering the room. | ||||||||
| C950 | RET NZ | Return if the player is entering the room. | ||||||||
| C951 | BIT 3,(IX+$0C) | Test whether the player is already jumping. | ||||||||
| C955 | RET NZ | Return if it is. | ||||||||
| C956 | LD A,(IX+$0B) | Fetch the speed in Z and add one to it. | ||||||||
| C959 | INC A | |||||||||
| C95A | RET M | Return if it was lower than FF, as the player is falling. | ||||||||
| C95B | SET 3,(IX+$0C) | Flag the player as jumping. | ||||||||
| C95F | LD (IX+$0B),$08 | Set the speed in Z to 08. | ||||||||
| C963 | PUSH BC | Stash the controls on the stack. | ||||||||
| C964 | CALL PlayJumpSound | Play the sound of a jump. | ||||||||
| C967 | POP BC | Restore the controls from the stack. | ||||||||
| C968 | RET | Return. | ||||||||
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View the equivalent code in;
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