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Routines |
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Used by the routine at HandlerGameMenu.
Called when the selections on the game selection menu may have changed. Records the selections in PreviousGameOptions and counts down to the hall of fame (see HandlerHallOfFame) and then makes the two selected options (the number of players and the controls) flash, and the others not.
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| HallOfFameCheck | B43E | LD HL,$96B7 | Point HL at the last seen options at PreviousGameOptions. | |||||
| B441 | LD A,($9692) | Fetch the game options from GameOptions. | ||||||
| B444 | CP (HL) | Compare the game options with the last ones seen. | ||||||
| B445 | LD ($96B7),A | Store the game options as the last ones seen. | ||||||
| B448 | CALL HandlerHallOfFame | Check the hall of fame timer. | ||||||
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Handle flashing each selection.
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| B44B | LD HL,$B498 | Point HL at the attributes of the selections at GameSelection_Attributes. | ||||||
| B44E | LD A,($9692) | Fetch the game options from GameOptions. | ||||||
| B451 | LD C,A | Stash the game options in C. | ||||||
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There are two player options to choose from (1UP or 2UP game).
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| B452 | LD B,$02 | Set the number of player options in B to 02. | ||||||
| B454 | AND %00000001 | Keep only bit 0 (the player options). | ||||||
| B456 | CALL HandlerMenuAttributeFlash | Flash the selected player option. | ||||||
| B459 | LD A,C | Restore the game options to A. | ||||||
| B45A | RRCA | Rotate out the number of players bit. | ||||||
| B45B | AND %00000011 | Keep only bits 0-1 (the control options). | ||||||
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There are four control methods to choose from.
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| B45D | LD B,$04 | Set the number of control methods in B to 04. | ||||||
| B45F | CALL HandlerMenuAttributeFlash | Flash the selected control method. | ||||||
| B462 | RET | Return. | ||||||
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Selection flashing routine.
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| HandlerMenuAttributeFlash | B463 | AND A | Jump to MenuAttributeUnset if this is not the selected option. | |||||
| B464 | JR NZ,MenuAttributeUnset | |||||||
| MenuAttributeSet | B466 | SET 7,(HL) | Make the selection flash. | |||||
| B468 | JR MenuAttributeNext | Jump to MenuAttributeNext. | ||||||
| HandlerMenuAttributeFlash_Loop | B46A | DEC A | Decrease the selection counter by one. | |||||
| B46B | JR Z,MenuAttributeSet | Jump to MenuAttributeSet if this is the selected option. | ||||||
| MenuAttributeUnset | B46D | RES 7,(HL) | Stop the selection flashing. | |||||
| MenuAttributeNext | B46F | INC HL | Move onto the attribute of the next option. | |||||
| B470 | DJNZ HandlerMenuAttributeFlash_Loop | Decrease the option counter by one and loop back to HandlerMenuAttributeFlash_Loop until all of the options have been done. | ||||||
| B472 | RET | Return. | ||||||
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