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Routines |
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Jump to one of several graphic-layout addresses using a time-weighted random pick.
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| GraphicLayoutRoutine_JumpTimeWeightedRandom | E8AA | PUSH IX | Stash IX on the stack. | |
| E8AC | LD A,(IX+$01) | Load A with the current entity's flags byte 1. | ||
| E8AF | ADD A,A | Multiply A by 04 to index the four-byte table entries. | ||
| E8B0 | ADD A,A | |||
| E8B1 | ADD A,$02 | A+=02. | ||
| E8B3 | LD E,A | Copy A into E as a saved coordinate / value. | ||
| E8B4 | LD D,$00 | Clear D (high byte of a pointer/offset). | ||
| E8B6 | ADD IX,DE | IX+=DE. | ||
| E8B8 | DEC (IX+$00) | Decrease the current entity's entity type. | ||
| E8BB | JR NZ,Layout_LoopEnd | Jump to Layout_LoopEnd to continue if the comparison did not match. | ||
| E8BD | POP IX | Restore IX from the stack. | ||
| E8BF | LD A,(IX+$00) | Fetch the current entity's type into A. | ||
| E8C2 | CALL PseudoRandom | Call PseudoRandom to pick a pseudo-random value. | ||
| E8C5 | LD (IX+$01),A | Set the current entity's flags byte 1. | ||
| E8C8 | ADD A,A | Multiply A by 04 to index the four-byte table entries. | ||
| E8C9 | ADD A,A | |||
| E8CA | ADD A,$02 | A+=02. | ||
| E8CC | LD E,A | Copy A into E as a saved coordinate / value. | ||
| E8CD | ADD IX,DE | IX+=DE. | ||
| E8CF | LD A,(IX+$01) | Load A with the current entity's flags byte 1. | ||
| E8D2 | CALL PseudoRandom | Call PseudoRandom to pick a pseudo-random value. | ||
| E8D5 | INC A | Step the graphic-set / attribute index on by one. | ||
| E8D6 | LD (IX+$00),A | Set the current entity's entity type. | ||
| E8D9 | JR GraphicLayoutRoutine_F9Continue | Jump to GraphicLayoutRoutine_F9Continue to continue this routine. | ||
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Timer still counting: restore IX and jump to the current time-weighted layout address.
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| Layout_LoopEnd | E8DB | POP DE | Restore DE from the stack. | |
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Load the chosen F9 table entry's layout address into IX and process it at Process_GraphicLayoutData.
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| GraphicLayoutRoutine_F9Continue | E8DC | LD E,(IX+$02) | Fetch this table entry's graphic-layout address into DE. | |
| E8DF | LD D,(IX+$03) | |||
| E8E2 | PUSH DE | Copy DE into IX (using the stack). | ||
| E8E3 | POP IX | |||
| E8E5 | JP Process_GraphicLayoutData | Jump to Process_GraphicLayoutData to process graphic layout data. | ||
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View the equivalent code in;
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