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Routines |
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Used by the routine at GameStart.
Process Special Entity Flags walking the entity tables at StateData_SimpleEntities / StateData_Boney.
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| Process_Special_Entity_Flags | B258 | LD HL,$72B3 | Point HL at the game event flags (GameEventFlags). | |
| B25B | BIT 0,(HL) | Is "room / script event raised" (bit 00 of GameEventFlags) set? If not, return. | ||
| B25D | RET Z | |||
| B25E | RES 0,(HL) | Clear "room / script event raised" (bit 00 of GameEventFlags). | ||
| B260 | LD DE,$000E | Each entity record is 000E bytes long, then load that length into DE. | ||
| B263 | LD IX,$8EE9 | Point IX at Boney's complex entity state (StateData_Boney). | ||
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Scan special-flag entities: raise them while y < 28, else deactivate, or try an entity-slot update.
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| Process_Special_Entity_Flags_Scan | B267 | LD A,(IX+$00) | Fetch the current entity's type for the type test. | |
| B26A | CP $32 | Is the current entity's entity type equal to 32? If so, return. | ||
| B26C | RET Z | |||
| B26D | BIT 5,(IX+$02) | Is bit 05 of the current entity's flags byte 2 set? If not, jump to Process_Special_Entity_Flags_TryUpdateSlot. | ||
| B271 | JR Z,Process_Special_Entity_Flags_TryUpdateSlot | |||
| B273 | LD A,(IX+$05) | Load A with the current entity's y-coordinate. | ||
| B276 | CP $28 | Is the current entity's y-coordinate less than 28? If so, jump to Process_Special_Entity_Flags_RaiseY. | ||
| B278 | JR C,Process_Special_Entity_Flags_RaiseY | |||
| B27A | LD (IX+$00),$00 | Write 00 to the current entity's entity type. | ||
| B27E | RES 7,(IX+$01) | Reset bit 07 of the current entity's flags byte 1. | ||
| B282 | RES 5,(IX+$02) | Reset bit 05 of the current entity's flags byte 2. | ||
| B286 | JR Process_Special_Entity_Flags_Branch | Jump to Process_Special_Entity_Flags_Branch to finish this special-flag entity. | ||
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Raise the special-flag entity two characters and keep the room/script event latched.
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| Process_Special_Entity_Flags_RaiseY | B288 | INC (IX+$05) | Move this entity two characters down. | |
| B28B | INC (IX+$06) | |||
| B28E | INC (IX+$05) | |||
| B291 | INC (IX+$06) | |||
| B294 | SET 0,(HL) | Set "room / script event raised" (bit 00 of GameEventFlags). | ||
| B296 | JR Process_Special_Entity_Flags_Branch | Jump to Process_Special_Entity_Flags_Branch to finish this special-flag entity. | ||
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When bit 07 is set, call Update_Entity_Slot to update the entity slot (once or twice).
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| Process_Special_Entity_Flags_TryUpdateSlot | B298 | BIT 7,(IX+$01) | Is bit 07 of the current entity's flags byte 1 set? If not, jump to Process_Special_Entity_Flags_Branch. | |
| B29C | JR Z,Process_Special_Entity_Flags_Branch | |||
| B29E | CALL Update_Entity_Slot | Call Update_Entity_Slot to update Entity Slot? If so, jump to Process_Special_Entity_Flags_Branch. | ||
| B2A1 | JR C,Process_Special_Entity_Flags_Branch | |||
| B2A3 | CALL Update_Entity_Slot | Call Update_Entity_Slot to update Entity Slot. | ||
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Advance to the next entity and continue the special-flag scan.
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| Process_Special_Entity_Flags_Branch | B2A6 | ADD IX,DE | Advance IX to the next entity record. | |
| B2A8 | JR Process_Special_Entity_Flags_Scan | Jump to Process_Special_Entity_Flags_Scan to advance to the next special-flag entity. | ||
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