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Routines |
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Used by the routine at RunGame.
Makes the list at ObjectsToDrawList of the objects that have to be drawn again. Each entry is the index of an object in the objects table, and the list ends with 255. An object is in the list if it is present and flagged to be drawn.
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Add each object that is present and flagged to be drawn.
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| ListObjectsToDraw | 52834 | PUSH IX | Stash IX on the stack. | |
| 52836 | LD B,40 | Set the number of objects to 40. | ||
| 52838 | LD DE,32 | Set DE to the size of an object. | ||
| 52841 | LD IX,23560 | Point IX at ObjectsTable. | ||
| 52845 | LD HL,52875 | Point HL at ObjectsToDrawList. | ||
| 52848 | LD C,0 | Set the index of the object to zero. | ||
| ListObjectsToDraw_Next | 52850 | LD A,(IX+0) | Fetch the graphic number of the object and test whether it is null. | |
| 52853 | AND A | |||
| 52854 | JR Z,ListObjectsToDraw_Advance | Jump to ListObjectsToDraw_Advance if it is. | ||
| 52856 | BIT 4,(IX+7) | Jump to ListObjectsToDraw_Advance if the object is not flagged to be drawn. | ||
| 52860 | JR Z,ListObjectsToDraw_Advance | |||
| 52862 | LD (HL),C | Add the index of the object to the list. | ||
| 52863 | INC HL | Move on to the next place in the list. | ||
| ListObjectsToDraw_Advance | 52864 | INC C | Go to the next index. | |
| 52865 | ADD IX,DE | Point IX at the next object. | ||
| 52867 | DJNZ ListObjectsToDraw_Next | Jump to ListObjectsToDraw_Next until all of the objects have been tested. | ||
| 52869 | LD A,255 | Fetch the end marker. | ||
| 52871 | LD (HL),A | Store it at the end of the list. | ||
| 52872 | POP IX | Restore IX from the stack. | ||
| 52874 | RET | Return. | ||
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