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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 | D4CC | LD IX,$DC0E | Point IX at GoldfishGame_PlayerAttributes. | |
| D4D0 | LD A,$11 | Set PAPER: BLUE (01). | ||
| D4D2 | RST $10 | |||
| D4D3 | LD A,$01 | |||
| D4D5 | RST $10 | |||
| D4D6 | LD A,(IX+$05) | Jump to GoldfishGame_UpdatePlayer_ApplyDeltas if there is no vertical movement. | ||
| D4D9 | CP $00 | |||
| D4DB | JR Z,GoldfishGame_UpdatePlayer_ApplyDeltas | |||
| D4DD | LD (IX+$04),$00 | Cancel horizontal movement while moving vertically. | ||
| GoldfishGame_UpdatePlayer_ApplyDeltas | D4E1 | CALL Handler_SeaCreatureMovement | Apply the player's movement deltas. | |
| D4E4 | LD A,C | Jump to GoldfishGame_UpdatePlayer_HitEdge if the player hit the right edge. | ||
| D4E5 | CP $19 | |||
| D4E7 | JP Z,GoldfishGame_UpdatePlayer_HitEdge | |||
| D4EA | CP $0D | Jump to GoldfishGame_UpdatePlayer_HitEdge if the player hit the left edge. | ||
| D4EC | JP Z,GoldfishGame_UpdatePlayer_HitEdge | |||
| D4EF | LD A,B | Jump to GoldfishGame_UpdatePlayer_HitEdge if the player hit the bottom. | ||
| D4F0 | CP $11 | |||
| D4F2 | JP Z,GoldfishGame_UpdatePlayer_HitEdge | |||
| D4F5 | CP $05 | Jump to GoldfishGame_UpdatePlayer_HitEdge if the player hit the top. | ||
| D4F7 | JP Z,GoldfishGame_UpdatePlayer_HitEdge | |||
| D4FA | LD A,C | Jump to GoldfishGame_UpdatePlayer_StorePosition if the column changed. | ||
| D4FB | CP (IX+$00) | |||
| D4FE | JR NZ,GoldfishGame_UpdatePlayer_StorePosition | |||
| D500 | LD A,B | Jump to GoldfishGame_UpdatePlayer_StorePosition if the row changed. | ||
| D501 | CP (IX+$01) | |||
| D504 | JR NZ,GoldfishGame_UpdatePlayer_StorePosition | |||
| D506 | LD A,(IX+$03) | Jump to GoldfishGame_UpdatePlayer_StorePosition if the vertical offset did not change. | ||
| D509 | CP D | |||
| D50A | JR Z,GoldfishGame_UpdatePlayer_StorePosition | |||
| GoldfishGame_UpdatePlayer_StorePosition | D50C | LD (IX+$00),C | Write the new horizontal co-ordinate back to the player. | |
| D50F | LD (IX+$01),B | Write the new vertical co-ordinate back to the player. | ||
| D512 | LD (IX+$02),E | Write the new horizontal offset back to the player. | ||
| D515 | LD (IX+$03),D | Write the new vertical offset back to the player. | ||
| D518 | PUSH DE | Stash the offsets on the stack. | ||
| D519 | CALL Handler_SeaCreatureAnimation | Animate the player frames. | ||
| D51C | POP DE | Restore the offsets from the stack. | ||
| D51D | LD (IX+$02),E | Write the horizontal offset back after animation. | ||
| D520 | LD (IX+$03),D | Write the vertical offset back after animation. | ||
| D523 | LD HL,$934C | Does nothing; this is overwritten on the next line. | ||
| D526 | LD HL,$9EEC | Write 9EEC to *CHARS. | ||
| D529 | LD ($5C36),HL | |||
| D52C | CALL GoldfishGame_PrintShiftedSprite | Print the shifted player sprite. | ||
| D52F | LD A,(IX+$00) | Copy the horizontal co-ordinate to the previous-horizontal slot. | ||
| D532 | LD (IX+$0D),A | |||
| D535 | LD A,(IX+$01) | Copy the vertical co-ordinate to the previous-vertical slot. | ||
| D538 | LD (IX+$0E),A | |||
| D53B | LD A,(IX+$03) | Copy the vertical offset to the previous-vertical-offset slot. | ||
| D53E | LD (IX+$0F),A | |||
| D541 | LD A,(IX+$02) | Copy the horizontal offset to the previous-offset slot. | ||
| D544 | LD (IX+$0B),A | |||
| GoldfishGame_UpdatePlayer_HitEdge | D547 | LD (IX+$04),$00 | Clear horizontal movement. | |
| D54B | LD (IX+$05),$00 | Clear vertical movement. | ||
| D54F | RET | Return. | ||
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