Routines
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45977: Collect Overlapping Item
Used by the routine at DrawItems.
Adds the entity in IX to the table of overlapping items that is being built by DrawItems. Four bytes are stored: the screen position from fields 14 and 15 the width from field 22 (times eight) and the height from field 23.
Input
IX The entity
HL' Pointer to the next free entry in the table
C' The number of entries
Output
HL' Updated pointer
CollectOverlappingItem 45977 EXX Keep the table pointer aside.
45978 LD E,(IX+14) The column and the row.
45981 LD D,(IX+15)
45984 LD A,(IX+22) The width, times eight.
45987 LD B,(IX+23)
45990 AND 15
45992 ADD A,A
45993 ADD A,A
45994 ADD A,A
45995 LD (HL),E Write the column, the row and the width.
45996 INC HL
45997 LD (HL),D
45998 INC HL
45999 LD (HL),A
46000 INC HL
46001 LD A,B The height, without the shape flags.
46002 AND 63
46004 LD (HL),A
46005 INC HL
46006 INC C Count this item.
46007 EXX Bring the table pointer back.
46008 RET Return.
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