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Routines |
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Used by the routine at RunGame.
Switches to the other player in a two-player game, by swapping the saved game state of the two players, and sets up the level for the new player.
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| SwitchPlayer | A30D | LD A,($DEFD) | Fetch the number of lives of the second player from OtherPlayerState. | |
| A310 | AND A | Test it. | ||
| A311 | RET Z | Return if there is no second player. | ||
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This entry point is used by the routine at RunGame.
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| SwitchPlayer_Flip | A312 | LD A,($A414) | Fetch the low byte of the operand of the instruction at A413. | |
| A315 | XOR %11100000 | Flip bits 5-7. | ||
| A317 | LD ($A414),A | Store it. | ||
| A31A | LD ($D2FA),A | Store it in the operand byte at D2FA. | ||
| A31D | LD HL,$DEDE | Point HL at Lives. | ||
| A320 | LD DE,$DEFD | Point DE at OtherPlayerState. | ||
| A323 | LD B,$1F | Set the number of bytes to 1F. | ||
| A325 | CALL SwapBytes | Swap the two game states. | ||
| A328 | LD HL,$E12E | Point HL at ScoreTextPlayerOne_Record. | ||
| A32B | LD DE,$E140 | Point DE at ScoreTextPlayerTwo_Record. | ||
| A32E | LD B,$09 | Set the number of bytes to 09. | ||
| A330 | CALL SwapBytes | Swap them. | ||
| A333 | LD HL,$E1A5 | Point HL at LivesTextPlayerOne_Record. | ||
| A336 | LD DE,$E1AB | Point DE at LivesTextPlayerTwo_Record. | ||
| A339 | LD B,$06 | Set the number of bytes to 06. | ||
| A33B | CALL SwapBytes | Swap them. | ||
| A33E | LD HL,$E1B1 | Point HL at BottlesTextPlayerOne_Record. | ||
| A341 | LD DE,$E1B7 | Point DE at BottlesTextPlayerTwo_Record. | ||
| A344 | LD B,$06 | Set the number of bytes to 06. | ||
| A346 | CALL SwapBytes | Swap them. | ||
| A349 | LD DE,$A59D | Point DE at Gauges. | ||
| A34C | LD HL,$A5A1 | Point HL at Gauges_Second. | ||
| A34F | LD B,$04 | Set the number of bytes to 04. | ||
| A351 | CALL SwapBytes | Swap them. | ||
| A354 | LD A,($60FB) | Fetch the control method of the first player from Player1ControlMethod and keep it in B. | ||
| A357 | LD B,A | |||
| A358 | LD A,($60FC) | Fetch the control method of the second player from Player2ControlMethod. | ||
| A35B | LD ($60FB),A | Make it the control method of the first player. | ||
| A35E | LD A,B | Fetch the old control method of the first player. | ||
| A35F | LD ($60FC),A | Make it the control method of the second player. | ||
| A362 | LD A,($DEDE) | Fetch the number of lives of the new player from Lives. | ||
| A365 | AND A | Test it. | ||
| A366 | RET Z | Return if the new player has no lives. | ||
| A367 | XOR A | Set A to zero. | ||
| A368 | LD ($A59D),A | Clear the first of the saved values at Gauges. | ||
| A36B | LD ($A5A1),A | Clear the second of the saved values at A5A1. | ||
| A36E | LD A,($DEDD) | Fetch the number of the current player from CurrentPlayer. | ||
| A371 | XOR %00000001 | Flip bit 0. | ||
| A373 | LD ($DEDD),A | Store it. | ||
| A376 | CALL ShowPlayerNumber | Call ShowPlayerNumber. | ||
| A379 | CALL ResetAttributes | Call ResetAttributes. | ||
| A37C | CALL ClearScreen | Call ClearScreen. | ||
| A37F | CALL DrawPanel | Call DrawPanel. | ||
| A382 | LD C,$00 | C is 00 so that the player is not placed. | ||
| A384 | CALL StartLevel_FindData | Call 86FB to find the data of the level. | ||
| A387 | LD A,($DEE0) | Fetch the number of bottles left from BottlesLeft. | ||
| A38A | PUSH AF | Save it. | ||
| A38B | CALL SetLevelGraphics | Call SetLevelGraphics to set the graphics of the level. | ||
| A38E | POP AF | Restore the number of bottles left. | ||
| A38F | LD ($DEE0),A | Store it. | ||
| A392 | LD HL,$7730 | Set the position of the panel attributes. | ||
| A395 | LD DE,$E11C | Point DE at PanelRectangle. | ||
| A398 | JP FillRectangle | Jump to FillRectangle to fill the attributes. | ||
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