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Routines |
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Used by the routine at Draw_Room.
Draws the bottom left corner of the frame of the room if bit 5 of the frame flags is set, or clears its area if it is not.
The corner is drawn at x position 0 y position 160 by Draw_Corner_Shape. Its shape depends on whether the floor (bit 4) and the left wall (bit 6) are present.
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| Draw_Bottom_Left_Corner | 39780 | PUSH DE | Stash the frame flags on the stack. | |||||||
| 39781 | LD HL,40960 | Set the x position to 0 and the y position to 160 (40960). | ||||||||
| 39784 | LD A,E | Copy the frame flags to A. | ||||||||
| 39785 | LD DE,39812 | Point at the table of corner shapes (Bottom_Left_Corner_Table). | ||||||||
| 39788 | BIT 5,A | Jump to 39795 to clear the area if the corner is not present. | ||||||||
| 39790 | JP Z,Clear_Panel | |||||||||
| 39792 | SBC A,C | |||||||||
| 39793 | PUSH HL | Stash the position on the stack. | ||||||||
| 39794 | EX DE,HL | Exchange the registers so that HL holds the address of the table. | ||||||||
| 39795 | BIT 4,A | Jump to Draw_Bottom_Left_Corner_Check_Left_Wall if the floor is not present. | ||||||||
| 39797 | JR Z,Draw_Bottom_Left_Corner_Check_Left_Wall | |||||||||
| 39799 | INC HL | Skip the shapes for a floor. | ||||||||
| 39800 | INC HL | |||||||||
| Draw_Bottom_Left_Corner_Check_Left_Wall | 39801 | BIT 6,A | Jump to Draw_Bottom_Left_Corner_Draw_Shape if the left wall is not present. | |||||||
| 39803 | JR Z,Draw_Bottom_Left_Corner_Draw_Shape | |||||||||
| 39805 | INC HL | Skip the shapes for a left wall. | ||||||||
| 39806 | INC HL | |||||||||
| 39807 | INC HL | |||||||||
| 39808 | INC HL | |||||||||
| Draw_Bottom_Left_Corner_Draw_Shape | 39809 | JP Draw_Corner_Shape | Jump to Draw_Corner_Shape to draw the shape. | |||||||
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