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Routines |
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Used by the routine at ShowTitleScreen.
Runs the title screen: it keeps the random number generator ticking over, slides the control icons for each player to the position of the control method selected, redraws the option markers and waits for the "0" key to be pressed to start the game.
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| RunTitleMenu | 34325 | CALL RandomNumber | Fetch a random number to keep the seed moving. | |
| 34328 | LD HL,(39524) | Add one to the frame counter in FrameCounter. | ||
| 34331 | INC HL | |||
| 34332 | LD (39524),HL | |||
| 34335 | LD IX,34568 | Use the control icon data for player one... | ||
| 34339 | LD DE,34574 | ...with the sprite of the icon in DE... | ||
| 34342 | CALL UpdateControlIcon | ...and update the icon. | ||
| 34345 | LD IX,34571 | Use the control icon data for player two... | ||
| 34349 | LD DE,34639 | ...with the sprite of the icon in DE... | ||
| 34352 | CALL UpdateControlIcon | ...and update the icon. | ||
| 34355 | LD HL,12144 | Draw the first option marker. | ||
| 34358 | CALL DrawMenuOption | |||
| 34361 | LD HL,16240 | Draw the second option marker. | ||
| 34364 | CALL DrawMenuOption | |||
| 34367 | LD D,24 | Delay for a short while. | ||
| 34369 | CALL Delay | |||
| 34372 | LD A,239 | Read the keyboard row "0" to "6". | ||
| 34374 | OUT (253),A | |||
| 34376 | IN A,(254) | |||
| 34378 | AND %00000001 | Test the "0" key. | ||
| 34380 | RET Z | Return if it is pressed, to start the game. | ||
| 34381 | CALL ReadMenuKeys | Check the other keys. | ||
| 34384 | JR RunTitleMenu | Go round again. | ||
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