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Routines |
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Used by the routine at InitialiseGame.
Goes through the data for all of the rooms, which is held from RoomData to ObjectTypes, and copies the second colour in the size and colours byte of each into the first so that both colours are the same.
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Copy the second colour over the first.
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| SetRoomAttributes | 51922 | LD HL,25705 | Point HL at RoomData. | |
| 51925 | LD BC,29640 | Point BC at ObjectTypes. | ||
| 51928 | INC HL | Increment HL. | ||
| SetRoomAttributes_Next | 51929 | LD E,(HL) | Fetch the length of the data. | |
| 51930 | INC HL | Increment HL. | ||
| 51931 | LD A,(HL) | Fetch the size and colours. | ||
| 51932 | RRCA | Rotate the second colour into bits 0-2. | ||
| 51933 | RRCA | |||
| 51934 | RRCA | |||
| 51935 | AND %00000111 | Keep only bits 0-2. | ||
| 51937 | LD D,A | Copy it to D. | ||
| 51938 | LD A,(HL) | Fetch the size and colours. | ||
| 51939 | AND %11111000 | Keep only bits 3-7. | ||
| 51941 | OR D | Merge D. | ||
| 51942 | LD (HL),A | Store the size and colours. | ||
| 51943 | LD D,0 | Set D to 0. | ||
| 51945 | ADD HL,DE | Add DE to HL. | ||
| 51946 | AND A | Return if the end of the room data has been reached. | ||
| 51947 | SBC HL,BC | |||
| 51949 | RET NC | |||
| 51950 | ADD HL,BC | Add BC to HL. | ||
| 51951 | JR SetRoomAttributes_Next | Jump to SetRoomAttributes_Next. | ||
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