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Routines |
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The handler for the robot mice (objects 86 and 87) 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 | 45328 | CALL SetPixelAdjustments_Mouse | Call SetPixelAdjustments_Mouse. | |||||
| 45331 | CALL ExtendObjectDownwards | Call ExtendObjectDownwards. | ||||||
| HandleBouncingMouse_Move | 45334 | LD A,(IX+9) | Fetch the speed along the x axis. | |||||
| 45337 | AND A | Jump to HandleBouncingMouse_MoveAlongY if it is zero. | ||||||
| 45338 | JR Z,HandleBouncingMouse_MoveAlongY | |||||||
| 45340 | LD (IX+16),A | Remember the speed. | ||||||
| 45343 | CALL ApplyGravityAndMove | Call ApplyGravityAndMove. | ||||||
| 45346 | BIT 0,(IX+12) | Jump to HandleBouncingMouse_Finish if the mouse has not been blocked along the x axis. | ||||||
| 45350 | JR Z,HandleBouncingMouse_Finish | |||||||
| 45352 | LD A,(IX+16) | Fetch the speed which was remembered. | ||||||
| 45355 | NEG | Make the speed negative. | ||||||
| 45357 | LD (IX+9),A | Set the speed along the x axis. | ||||||
| HandleBouncingMouse_Bounce | 45360 | CALL PlayBumpSound | Call PlayBumpSound. | |||||
| 45363 | CALL FaceDirectionOfMovement | Call FaceDirectionOfMovement. | ||||||
| HandleBouncingMouse_Finish | 45366 | CALL RestoreObjectHeight | Call RestoreObjectHeight. | |||||
| 45369 | JP SetDeadlyFlagsAndDraw | Jump to SetDeadlyFlagsAndDraw. | ||||||
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Move along the y axis, and reverse if blocked.
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| HandleBouncingMouse_MoveAlongY | 45372 | LD A,(IX+10) | Fetch the speed along the y axis. | |||||
| 45375 | AND A | Jump to HandleBouncingMouse_StartMoving if it is zero. | ||||||
| 45376 | JR Z,HandleBouncingMouse_StartMoving | |||||||
| 45378 | LD (IX+16),A | Remember the speed. | ||||||
| 45381 | CALL ApplyGravityAndMove | Call ApplyGravityAndMove. | ||||||
| 45384 | BIT 1,(IX+12) | Jump to HandleBouncingMouse_Finish if the mouse has not been blocked along the y axis. | ||||||
| 45388 | JR Z,HandleBouncingMouse_Finish | |||||||
| 45390 | LD A,(IX+16) | Fetch the speed which was remembered. | ||||||
| 45393 | NEG | Make the speed negative. | ||||||
| 45395 | LD (IX+10),A | Set the speed along the y axis. | ||||||
| 45398 | JR HandleBouncingMouse_Bounce | Jump to HandleBouncingMouse_Bounce. | ||||||
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The mouse is not moving.
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| HandleBouncingMouse_StartMoving | 45400 | CALL SetMouseSpeed | Call SetMouseSpeed. | |||||
| 45403 | SLA (IX+9) | Double the speed along the x axis. | ||||||
| 45407 | SLA (IX+10) | Double the speed along the y axis. | ||||||
| 45411 | JR HandleBouncingMouse_Move | Jump to HandleBouncingMouse_Move. | ||||||
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