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Routines |
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Used by the routine at GameStart.
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| PopulatePrimaryDisplay_LayoutData | 9836 | LD HL,($6DC6) | Self-modifying code; alter the value for the LD HL instruction at 98C8 with the address at PrimaryDisplayBuffer. |
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| 9839 | LD ($98C9),HL | |||
| 983C | LD A,($6D9F) | Load C with TempStore_RoomDimension_Depth. | ||
| 983F | LD C,A | |||
| 9840 | LD A,($6D8A) | Load B with CurrentRoomIndex. | ||
| 9843 | LD B,A | |||
| 9844 | LD D,$00 | Load D with 00. | ||
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Start drawing simple entities.
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| DrawSimpleEntities | 9846 | LD IX,($6D6F) | Load IX with the start address of StateData_SimpleEntities. | |
| 984A | LD E,$06 | Load DE with 06 (as simple state data entries are 06 bytes wide). | ||
| DrawSimpleEntities_Loop | 984C | LD A,(IX+$00) | Load first byte of current simple state data entry into A. | |
| 984F | CP $FF | If this is FF (end marker for complex state data) then skip ahead to DecreaseDepth. | ||
| 9851 | JR Z,DecreaseDepth | |||
| 9853 | CP $FE | If it is not FE (end marker for simple state data) then skip ahead to PopulatePrimaryDisplay_LayoutData_0. | ||
| 9855 | JR NZ,PopulatePrimaryDisplay_LayoutData_0 | |||
| 9857 | SLA E | |||
| 9859 | INC IX | Advance IX to start of complex state data block. | ||
| 985B | LD A,(IX+$00) | Load A with entity's room index. | ||
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At this point, A holds the index of the room to which the simple or complex entity belongs.
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| PopulatePrimaryDisplay_LayoutData_0 | 985E | CP B | If entity's room is not the same as the current character's current room then skip ahead to PrimaryDisplay_NextData. | |
| 985F | JR NZ,PrimaryDisplay_NextData | |||
| 9861 | LD A,C | If entity's depth is not the same as current depth in C then skip ahead to PrimaryDisplay_NextData. | ||
| 9862 | CP (IX+$01) | |||
| 9865 | JR NZ,PrimaryDisplay_NextData | |||
| 9867 | EXX | Switch to the shadow registers. | ||
| 9868 | PUSH IX | Stash IX on the stack. | ||
| 986A | CALL $9878 | Call 9878. | ||
| 986D | POP IX | Restore IX from the stack. | ||
| 986F | EXX | Switch back to the normal registers. | ||
| PrimaryDisplay_NextData | 9870 | ADD IX,DE | Advance IX to next entity's state data. | |
| 9872 | JR DrawSimpleEntities_Loop | Loop back to DrawSimpleEntities_Loop. | ||
| DecreaseDepth | 9874 | DEC C | Decrease current depth (i.e. closer to screen). | |
| 9875 | JR NZ,DrawSimpleEntities | If depth is not zero (i.e. still depth levels to process) then loop back to DrawSimpleEntities. | ||
| 9877 | RET | Return. | ||
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