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Routines |
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Handles an extra life, which is an object that the player gets by touching it. When it is touched the object turns into the graphic that removes it, the table entry that it came from is cleared so that the object does not come back, and the player gets an extra life.
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Test whether the player is touching the extra life.
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| HandleExtraLife | C1AB | CALL SetPixelAdjustments | Set the pixel adjustments of an extra life. | |||||
| C1AE | PUSH IX | Copy IX to IY (using the stack). | ||||||
| C1B0 | POP IY | |||||||
| C1B2 | LD IX,$5C08 | Point IX at ObjectsTable. | ||||||
| C1B6 | INC (IX+$04) | Make the player wider by one. | ||||||
| C1B9 | INC (IX+$05) | Make the player deeper by one. | ||||||
| C1BC | CALL TestNearObject | Test whether the player is on or next to the extra life. | ||||||
| C1BF | DEC (IX+$04) | Put the width of the player right. | ||||||
| C1C2 | DEC (IX+$05) | Put the depth of the player right. | ||||||
| C1C5 | PUSH IY | Copy IY to IX (using the stack). | ||||||
| C1C7 | POP IX | |||||||
| C1C9 | JR NC,HandleExtraLife_Update | Jump to HandleExtraLife_Update if the player is not touching the extra life. | ||||||
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Award the extra life and remove the object.
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| C1CB | SET 3,(IX+$00) | Change the graphic of the object to the one that removes it. | ||||||
| C1CF | CALL SetPixelAdjustments_Sparkle | Set the pixel adjustments of a sparkle. | ||||||
| C1D2 | LD L,(IX+$10) | Fetch the low byte of the address of the table entry that the object comes from. | ||||||
| C1D5 | LD H,(IX+$11) | Fetch the high byte. | ||||||
| C1D8 | LD (HL),$00 | Clear the graphic number of the table entry. | ||||||
| C1DA | LD HL,$5BBA | Point HL at Lives. | ||||||
| C1DD | INC (HL) | Give the player an extra life. | ||||||
| C1DE | XOR A | Clear A. | ||||||
| C1DF | LD ($5BC0),A | Allow the spiked balls to drop again at SpikedBallHoldFlag. | ||||||
| C1E2 | CALL PlayLowBeep | Play a beep. | ||||||
| C1E5 | CALL PrintLives | Print the number of lives. | ||||||
| C1E8 | LD BC,$2020 | Set the position of the number of lives on the panel. | ||||||
| C1EB | CALL CopyAreaToScreen | Copy the number of lives from the screen buffer to the display. | ||||||
| HandleExtraLife_Update | C1EE | JP HandleTable_Fall | Update the object, making it move if it has to. | |||||
| Prev: C1A1 | Up: Map | Next: C1F1 |