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Routines |
| Prev: F274 | Up: Map | Next: F33E |
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Countdown HallOfFame_Timer and read the controls while a name is being entered.
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| HallOfFame_Input | F295 | LD HL,($5E6D) | Fetch HallOfFame_Timer. | |
| F298 | DEC HL | Decrease it by one. | ||
| F299 | LD ($5E6D),HL | Write it back. | ||
| F29C | LD A,L | Jump to InsertHighScore if the timer is now zero. | ||
| F29D | OR H | |||
| F29E | JP Z,InsertHighScore | |||
| F2A1 | CALL HandlerControls | Call HandlerControls. | ||
| F2A4 | BIT 4,A | Jump to HallOfFame_Input_AcceptFire if fire is pressed. | ||
| F2A6 | JP Z,HallOfFame_Input_AcceptFire | |||
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Only check Left and Right once every sixteen ticks.
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| F2A9 | LD A,($5E6D) | Fetch the low byte of HallOfFame_Timer. | ||
| F2AC | AND %00001111 | Keep only bits 0-3. | ||
| F2AE | JP NZ,HallOfFame_Input_DrawLetter | Jump to HallOfFame_Input_DrawLetter if the result is not zero. | ||
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Release the fire lock, then read Left and Right.
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| F2B1 | XOR A | Write 00 to HallOfFame_FireLock. | ||
| F2B2 | LD ($5E70),A | |||
| F2B5 | CALL HandlerControls | Call HandlerControls. | ||
| F2B8 | BIT 0,A | Jump to HallOfFame_Input_StepForward if Right is pressed. | ||
| F2BA | JP Z,HallOfFame_Input_StepForward | |||
| F2BD | BIT 1,A | Jump to HallOfFame_Input_StepBackward if Left is pressed. | ||
| F2BF | JP Z,HallOfFame_Input_StepBackward | |||
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Draw the current letter and restart the input wait.
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| HallOfFame_Input_DrawLetter | F2C2 | LD A,($5E6F) | Fetch HallOfFame_Index. | |
| F2C5 | LD HL,$5E78 | HL=HallOfFame_Name. | ||
| F2C8 | LD C,A | Copy the index into C. | ||
| F2C9 | LD B,$00 | Clear B. | ||
| F2CB | ADD HL,BC | Point HL at the current letter. | ||
| F2CC | LD A,(HL) | Fetch the letter. | ||
| F2CD | LD HL,($5E75) | Fetch HallOfFame_Pointer. | ||
| F2D0 | CALL PrintScreen | Call PrintScreen. | ||
| F2D3 | JP StartNameEntry | Jump to StartNameEntry. | ||
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Fire accepts the letter and advances the cursor.
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| HallOfFame_Input_AcceptFire | F2D6 | LD A,($5E70) | Fetch HallOfFame_FireLock. | |
| F2D9 | AND A | Jump to HallOfFame_Input_DrawLetter if fire is still locked. | ||
| F2DA | JP NZ,HallOfFame_Input_DrawLetter | |||
| F2DD | CALL SoundsDropItem | Call SoundsDropItem. | ||
| F2E0 | LD A,$01 | Write 01 to HallOfFame_FireLock. | ||
| F2E2 | LD ($5E70),A | |||
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Advance to the next letter, finishing after three.
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| F2E5 | LD A,($5E6F) | Fetch HallOfFame_Index. | ||
| F2E8 | INC A | Increase the index by one. | ||
| F2E9 | CP $03 | Jump to InsertHighScore if all three letters are done. | ||
| F2EB | JP Z,InsertHighScore | |||
| F2EE | LD ($5E6F),A | Write the new index. | ||
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Move the screen pointer on to the next letter.
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| F2F1 | LD HL,($5E75) | Fetch HallOfFame_Pointer. | ||
| F2F4 | LD A,$40 | A=40 (unused). | ||
| F2F6 | INC L | Advance the screen pointer by two columns. | ||
| F2F7 | INC L | |||
| F2F8 | LD ($5E75),HL | Write it back. | ||
| F2FB | JP HallOfFame_Input_DrawLetter | Jump to HallOfFame_Input_DrawLetter. | ||
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Right steps the letter forward.
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| HallOfFame_Input_StepForward | F2FE | CALL SoundsTakeObject | Call SoundsTakeObject. | |
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Fetch the current letter and step it forward.
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| F301 | LD A,($5E6F) | Fetch HallOfFame_Index. | ||
| F304 | LD C,A | Copy the index into C. | ||
| F305 | LD B,$00 | Clear B. | ||
| F307 | LD HL,$5E78 | HL=HallOfFame_Name. | ||
| F30A | ADD HL,BC | Point HL at the current letter. | ||
| F30B | LD A,(HL) | Fetch the letter. | ||
| F30C | INC A | Increase it by one. | ||
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Wrap the letter around: after "Z" comes a space, and after a space comes "A".
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| F30D | CP $5B | Jump to HallOfFame_Input_Space if it wrapped past "Z". | ||
| F30F | JR Z,HallOfFame_Input_Space | |||
| F311 | CP $21 | Jump to HallOfFame_Input_WriteLetter if it is not "!". | ||
| F313 | JP NZ,HallOfFame_Input_WriteLetter | |||
| F316 | LD A,$41 | A=41. | ||
| HallOfFame_Input_WriteLetter | F318 | LD (HL),A | Write the letter. | |
| F319 | JP HallOfFame_Input_DrawLetter | Jump to HallOfFame_Input_DrawLetter. | ||
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Left steps the letter backward.
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| HallOfFame_Input_StepBackward | F31C | CALL SoundsTakeObject | Call SoundsTakeObject. | |
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Fetch the current letter and step it backward.
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| F31F | LD A,($5E6F) | Fetch HallOfFame_Index. | ||
| F322 | LD C,A | Copy the index into C. | ||
| F323 | LD B,$00 | Clear B. | ||
| F325 | LD HL,$5E78 | HL=HallOfFame_Name. | ||
| F328 | ADD HL,BC | Point HL at the current letter. | ||
| F329 | LD A,(HL) | Fetch the letter. | ||
| F32A | DEC A | Decrease it by one. | ||
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Wrap the letter around: before "A" comes a space, and before a space comes "Z".
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| F32B | CP $40 | Jump to HallOfFame_Input_Space if it wrapped past "A". | ||
| F32D | JR Z,HallOfFame_Input_Space | |||
| F32F | CP $1F | Jump to HallOfFame_Input_Loop if it is not 1F. | ||
| F331 | JP NZ,HallOfFame_Input_Loop | |||
| F334 | LD A,$5A | A=5A. | ||
| HallOfFame_Input_Loop | F336 | LD (HL),A | Write the letter. | |
| F337 | JP HallOfFame_Input_DrawLetter | Jump to HallOfFame_Input_DrawLetter. | ||
| HallOfFame_Input_Space | F33A | LD A,$20 | A=20. | |
| F33C | JR HallOfFame_Input_Loop | Jump to HallOfFame_Input_Loop. | ||
| Prev: F274 | Up: Map | Next: F33E |