|
Routines |
| Prev: 9883 | Up: Map | Next: 98C4 |
|
The handler for the mushroom (sprite ID A1). While the player is touching it (see CheckPlayerTouching), the energy in PlayerEnergy is decreased by one every frame, the chicken is drawn again with DrawChicken and a sound is made with SoundsTouching. When the energy reaches zero the mushroom is removed by RemoveMushroom. The attribute of the mushroom cycles round the colours in MushroomAttributes, changing every fourth frame (using offset 06), and the attributes are set by SetItemAttributes.
|
||||||||
| HandlerMushroom | 988B | CALL StoreEntity | Call StoreEntity to save the position of the mushroom. | |||||
| 988E | CALL CheckPlayerTouching | Call CheckPlayerTouching to see whether the player is touching the mushroom. | ||||||
| 9891 | JR C,HandlerMushroom_Touching | Jump to HandlerMushroom_Touching if it is. | ||||||
| HandlerMushroom_Colour | 9893 | LD A,($5E12) | Fetch the counter from CounterLow. | |||||
| 9896 | CPL | Flip the bits. | ||||||
| 9897 | AND %00000011 | Keep only bits 0-1. | ||||||
| 9899 | JR NZ,HandlerMushroom_Attribute | Jump to HandlerMushroom_Attribute unless this is every fourth frame. | ||||||
| 989B | INC (IX+$06) | Increment offset 06 of the mushroom. | ||||||
| HandlerMushroom_Attribute | 989E | LD A,(IX+$06) | A=offset 06 of the mushroom. | |||||
| 98A1 | AND %00000011 | Keep only bits 0-1. | ||||||
| 98A3 | LD C,A | Keep the index in C. | ||||||
| 98A4 | LD B,$00 | B=00. | ||||||
| 98A6 | LD HL,$98C4 | Point HL at the mushroom attributes at MushroomAttributes. | ||||||
| 98A9 | ADD HL,BC | Add BC to HL. | ||||||
| 98AA | LD A,(HL) | Fetch the attribute. | ||||||
| 98AB | LD (IX+$05),A | Update the attribute of the mushroom. | ||||||
| 98AE | JP SetItemAttributes | Jump to SetItemAttributes to set the attributes of the item. | ||||||
|
The player is touching the mushroom, so decrease the energy.
|
||||||||
| HandlerMushroom_Touching | 98B1 | LD A,($5E28) | Fetch the energy of the player from PlayerEnergy. | |||||
|
See Infinite Energy.
|
||||||||
| 98B4 | DEC A | Decrease it by one. | ||||||
| 98B5 | LD ($5E28),A | Update the energy of the player in PlayerEnergy. | ||||||
| 98B8 | JP Z,RemoveMushroom | Jump to RemoveMushroom if the energy is zero. | ||||||
| 98BB | CALL DrawChicken | Call DrawChicken to draw the chicken. | ||||||
| 98BE | CALL SoundsTouching | Call SoundsTouching to make the sound of touching. | ||||||
| 98C1 | JP HandlerMushroom_Colour | Jump to HandlerMushroom_Colour to colour the mushroom. | ||||||
| Prev: 9883 | Up: Map | Next: 98C4 |