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Routines |
| Prev: B108 | Up: Map | Next: B165 |
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The handler for the robot mice (objects 56 and 57) which run to and fro along one axis. A mouse which is not moving is given a speed from the way it faces, doubled. When it is blocked it reverses its speed, makes a noise and turns to face the other way.
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Move along the x axis, and reverse if blocked.
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| HandleBouncingMouse | B110 | CALL SetPixelAdjustments_Mouse | Call SetPixelAdjustments_Mouse. | |||||
| B113 | CALL ExtendObjectDownwards | Call ExtendObjectDownwards. | ||||||
| HandleBouncingMouse_Move | B116 | LD A,(IX+$09) | Fetch the speed along the x axis. | |||||
| B119 | AND A | Jump to HandleBouncingMouse_MoveAlongY if it is zero. | ||||||
| B11A | JR Z,HandleBouncingMouse_MoveAlongY | |||||||
| B11C | LD (IX+$10),A | Remember the speed. | ||||||
| B11F | CALL ApplyGravityAndMove | Call ApplyGravityAndMove. | ||||||
| B122 | BIT 0,(IX+$0C) | Jump to HandleBouncingMouse_Finish if the mouse has not been blocked along the x axis. | ||||||
| B126 | JR Z,HandleBouncingMouse_Finish | |||||||
| B128 | LD A,(IX+$10) | Fetch the speed which was remembered. | ||||||
| B12B | NEG | Make the speed negative. | ||||||
| B12D | LD (IX+$09),A | Set the speed along the x axis. | ||||||
| HandleBouncingMouse_Bounce | B130 | CALL PlayBumpSound | Call PlayBumpSound. | |||||
| B133 | CALL FaceDirectionOfMovement | Call FaceDirectionOfMovement. | ||||||
| HandleBouncingMouse_Finish | B136 | CALL RestoreObjectHeight | Call RestoreObjectHeight. | |||||
| B139 | JP SetDeadlyFlagsAndDraw | Jump to SetDeadlyFlagsAndDraw. | ||||||
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Move along the y axis, and reverse if blocked.
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| HandleBouncingMouse_MoveAlongY | B13C | LD A,(IX+$0A) | Fetch the speed along the y axis. | |||||
| B13F | AND A | Jump to HandleBouncingMouse_StartMoving if it is zero. | ||||||
| B140 | JR Z,HandleBouncingMouse_StartMoving | |||||||
| B142 | LD (IX+$10),A | Remember the speed. | ||||||
| B145 | CALL ApplyGravityAndMove | Call ApplyGravityAndMove. | ||||||
| B148 | BIT 1,(IX+$0C) | Jump to HandleBouncingMouse_Finish if the mouse has not been blocked along the y axis. | ||||||
| B14C | JR Z,HandleBouncingMouse_Finish | |||||||
| B14E | LD A,(IX+$10) | Fetch the speed which was remembered. | ||||||
| B151 | NEG | Make the speed negative. | ||||||
| B153 | LD (IX+$0A),A | Set the speed along the y axis. | ||||||
| B156 | JR HandleBouncingMouse_Bounce | Jump to HandleBouncingMouse_Bounce. | ||||||
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The mouse is not moving.
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| HandleBouncingMouse_StartMoving | B158 | CALL SetMouseSpeed | Call SetMouseSpeed. | |||||
| B15B | SLA (IX+$09) | Double the speed along the x axis. | ||||||
| B15F | SLA (IX+$0A) | Double the speed along the y axis. | ||||||
| B163 | JR HandleBouncingMouse_Move | Jump to HandleBouncingMouse_Move. | ||||||
| Prev: B108 | Up: Map | Next: B165 |