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Routines |
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Used by the routine at GoldfishGame.
Applies movement, animates and reprints the goldfish player at GoldfishGame_PlayerAttributes.
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| GoldfishGame_UpdatePlayer | 54476 | LD IX,56334 | Point IX at GoldfishGame_PlayerAttributes. | |
| 54480 | LD A,17 | Set PAPER: BLUE (1). | ||
| 54482 | RST 16 | |||
| 54483 | LD A,1 | |||
| 54485 | RST 16 | |||
| 54486 | LD A,(IX+5) | Jump to GoldfishGame_UpdatePlayer_ApplyDeltas if there is no vertical movement. | ||
| 54489 | CP 0 | |||
| 54491 | JR Z,GoldfishGame_UpdatePlayer_ApplyDeltas | |||
| 54493 | LD (IX+4),0 | Cancel horizontal movement while moving vertically. | ||
| GoldfishGame_UpdatePlayer_ApplyDeltas | 54497 | CALL Handler_SeaCreatureMovement | Apply the player's movement deltas. | |
| 54500 | LD A,C | Jump to GoldfishGame_UpdatePlayer_HitEdge if the player hit the right edge. | ||
| 54501 | CP 25 | |||
| 54503 | JP Z,GoldfishGame_UpdatePlayer_HitEdge | |||
| 54506 | CP 13 | Jump to GoldfishGame_UpdatePlayer_HitEdge if the player hit the left edge. | ||
| 54508 | JP Z,GoldfishGame_UpdatePlayer_HitEdge | |||
| 54511 | LD A,B | Jump to GoldfishGame_UpdatePlayer_HitEdge if the player hit the bottom. | ||
| 54512 | CP 17 | |||
| 54514 | JP Z,GoldfishGame_UpdatePlayer_HitEdge | |||
| 54517 | CP 5 | Jump to GoldfishGame_UpdatePlayer_HitEdge if the player hit the top. | ||
| 54519 | JP Z,GoldfishGame_UpdatePlayer_HitEdge | |||
| 54522 | LD A,C | Jump to GoldfishGame_UpdatePlayer_StorePosition if the column changed. | ||
| 54523 | CP (IX+0) | |||
| 54526 | JR NZ,GoldfishGame_UpdatePlayer_StorePosition | |||
| 54528 | LD A,B | Jump to GoldfishGame_UpdatePlayer_StorePosition if the row changed. | ||
| 54529 | CP (IX+1) | |||
| 54532 | JR NZ,GoldfishGame_UpdatePlayer_StorePosition | |||
| 54534 | LD A,(IX+3) | Jump to GoldfishGame_UpdatePlayer_StorePosition if the vertical offset did not change. | ||
| 54537 | CP D | |||
| 54538 | JR Z,GoldfishGame_UpdatePlayer_StorePosition | |||
| GoldfishGame_UpdatePlayer_StorePosition | 54540 | LD (IX+0),C | Write the new horizontal co-ordinate back to the player. | |
| 54543 | LD (IX+1),B | Write the new vertical co-ordinate back to the player. | ||
| 54546 | LD (IX+2),E | Write the new horizontal offset back to the player. | ||
| 54549 | LD (IX+3),D | Write the new vertical offset back to the player. | ||
| 54552 | PUSH DE | Stash the offsets on the stack. | ||
| 54553 | CALL Handler_SeaCreatureAnimation | Animate the player frames. | ||
| 54556 | POP DE | Restore the offsets from the stack. | ||
| 54557 | LD (IX+2),E | Write the horizontal offset back after animation. | ||
| 54560 | LD (IX+3),D | Write the vertical offset back after animation. | ||
| 54563 | LD HL,37708 | Does nothing; this is overwritten on the next line. | ||
| 54566 | LD HL,40684 | Write 40684 to *CHARS. | ||
| 54569 | LD (23606),HL | |||
| 54572 | CALL GoldfishGame_PrintShiftedSprite | Print the shifted player sprite. | ||
| 54575 | LD A,(IX+0) | Copy the horizontal co-ordinate to the previous-horizontal slot. | ||
| 54578 | LD (IX+13),A | |||
| 54581 | LD A,(IX+1) | Copy the vertical co-ordinate to the previous-vertical slot. | ||
| 54584 | LD (IX+14),A | |||
| 54587 | LD A,(IX+3) | Copy the vertical offset to the previous-vertical-offset slot. | ||
| 54590 | LD (IX+15),A | |||
| 54593 | LD A,(IX+2) | Copy the horizontal offset to the previous-offset slot. | ||
| 54596 | LD (IX+11),A | |||
| GoldfishGame_UpdatePlayer_HitEdge | 54599 | LD (IX+4),0 | Clear horizontal movement. | |
| 54603 | LD (IX+5),0 | Clear vertical movement. | ||
| 54607 | RET | Return. | ||
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