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Routines |
| Prev: 98B0 | Up: Map | Next: 990A |
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Used by the routine at GameEntry.
Sets up the screen and the tables used by the game and then shows the title screen. This routine never returns.
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| InitialiseGame | 98D0 | LD HL,$9613 | Point HL at the first of the game variables. | |
| 98D3 | LD BC,$01AD | There are 01AD bytes to clear, which covers the variables and the first 13 entries of the entity table. | ||
| 98D6 | CALL FillMemory | Zero them using FillMemory. | ||
| 98D9 | LD ($9613),IY | Save IY, as it is restored every time the game waits for an interrupt. | ||
| 98DD | XOR A | Set the border to black. | ||
| 98DE | OUT ($FE),A | |||
| 98E0 | LD DE,$3FFF | Point DE at an address in ROM, so that the screen is not touched. | ||
| 98E3 | CALL DrawPlayWindow_Entry | Initialise the off-screen buffer using DrawPlayWindow_Entry. | ||
| 98E6 | CALL BuildShiftTables | Build the tables that are used to shift sprites using BuildShiftTables. | ||
| 98E9 | CALL ClearScreen | Clear the screen using ClearScreen. | ||
| 98EC | CALL DrawBorder | Draw the border around the screen using DrawBorder. | ||
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This entry point is used by the routine at GameOver.
The game comes back here when it has ended.
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| TitleScreen | 98EF | CALL DrawPanel | Draw the panel using DrawPanel. | |
| 98F2 | CALL PrintScore | Print the score using PrintScore. | ||
| 98F5 | CALL PrintHiScore | Print the hi-score using PrintHiScore. | ||
| 98F8 | LD HL,$961B | Point HL at Scores. | ||
| 98FB | LD BC,$01A5 | There are 01A5 bytes to clear, which covers the scores, the variables and the first 13 entries of the entity table. | ||
| 98FE | CALL FillMemory | Zero them using FillMemory. | ||
| 9901 | CALL ClearLargeWindow | Clear the large window using ClearLargeWindow. | ||
| 9904 | CALL GameMenu | Show the menu using GameMenu, which returns when the player has chosen to start the game. | ||
| 9907 | CALL StartGame | Start the game using StartGame. | ||
| Prev: 98B0 | Up: Map | Next: 990A |