|
Routines |
| Prev: C1AB | Up: Map | Next: C232 |
|
Handles the graphic numbers 68 to 6E, which are the special objects once the player has dropped them above the cauldron. The object moves towards the centre of the room in X and Y at a speed of one. While it does so it is kept at a height of about 98: it is lifted if it is below that, and it hangs there if it is not. Once it is at the centre of the room, it falls into the cauldron.
|
||||||||
|
Move the object towards the centre of the room.
|
||||||||
| HandleObjectDroppedInCauldron | C1F1 | CALL SetPixelAdjustments_Sparkle | Set the pixel adjustments of a sparkle. | |||||
| C1F4 | LD A,(IX+$01) | Fetch the X coordinate of the object. | ||||||
| C1F7 | SUB $80 | Subtract the X coordinate of the centre of the room. | ||||||
| C1F9 | JR Z,HandleObjectDroppedInCauldron_SetX | Jump to HandleObjectDroppedInCauldron_SetX if the object is at the centre of the room. | ||||||
| C1FB | LD A,$01 | Set the speed to 01. | ||||||
| C1FD | JP M,HandleObjectDroppedInCauldron_SetX | Jump to HandleObjectDroppedInCauldron_SetX if the object is on the west side of the centre. | ||||||
| C200 | NEG | Make the speed negative. | ||||||
| HandleObjectDroppedInCauldron_SetX | C202 | LD (IX+$09),A | Set the speed in X, towards the centre of the room. | |||||
| C205 | LD A,(IX+$02) | Fetch the Y coordinate of the object. | ||||||
| C208 | SUB $80 | Subtract the Y coordinate of the centre of the room. | ||||||
| C20A | JR Z,HandleObjectDroppedInCauldron_SetY | Jump to HandleObjectDroppedInCauldron_SetY if the object is at the centre of the room. | ||||||
| C20C | LD A,$01 | Set the speed to 01. | ||||||
| C20E | JP M,HandleObjectDroppedInCauldron_SetY | Jump to HandleObjectDroppedInCauldron_SetY if the object is on the south side of the centre. | ||||||
| C211 | NEG | Make the speed negative. | ||||||
| HandleObjectDroppedInCauldron_SetY | C213 | LD (IX+$0A),A | Set the speed in Y, towards the centre of the room. | |||||
| C216 | LD A,(IX+$01) | Fetch the X coordinate of the object. | ||||||
| C219 | CP $80 | Jump to HandleObjectDroppedInCauldron_Lift if the object is not at the centre of the room in X. | ||||||
| C21B | JR NZ,HandleObjectDroppedInCauldron_Lift | |||||||
| C21D | XOR (IX+$02) | Combine the X coordinate of the object with the Y coordinate. | ||||||
| C220 | JR Z,HandleObjectAtCentreOfRoom | Jump to HandleObjectAtCentreOfRoom if the object is at the centre of the room in Y too. | ||||||
| HandleObjectDroppedInCauldron_Lift | C222 | LD A,(IX+$03) | Fetch the Z coordinate of the object. | |||||
| C225 | CP $98 | Compare it with 98. | ||||||
| C227 | LD A,$01 | Set the speed in Z to 01. | ||||||
| C229 | JR NC,HandleObjectDroppedInCauldron_SetZ | Jump to HandleObjectDroppedInCauldron_SetZ if the object is as high as that. | ||||||
| C22B | INC A | Set the speed in Z to 02. | ||||||
| HandleObjectDroppedInCauldron_SetZ | C22C | LD (IX+$0B),A | Set the speed in Z. | |||||
|
This entry point is used by the routine at HandleObjectAtCentreOfRoom.
|
||||||||
| HandleObjectDroppedInCauldron_Move | C22F | CALL ApplyGravityAndMove | Apply gravity to the object and move it. | |||||
| Prev: C1AB | Up: Map | Next: C232 |