Routines
Prev: 46368 Up: Map Next: 46426
46385: List Objects To Draw
Used by the routine at RunGame.
Makes a list of the numbers of the objects that have to be drawn, which is every object that is in use and has bit 4 of its flags set. The list is stored at DrawList and ends with 255.
Go through all 54 objects.
ListObjectsToDraw 46385 PUSH IX Stash IX on the stack.
46387 LD B,54 Set a counter in B of 54 objects.
46389 LD DE,32 Set DE to the size of an object record.
46392 LD IX,42863 Start with the first object record, ObjectsTable.
46396 LD HL,46426 Start the draw list at DrawList.
46399 LD C,0 Start with object number 0.
ListObjectsToDraw_Next 46401 LD A,(IX+0) Jump to ListObjectsToDraw_Skip if the object is not in use.
46404 AND A
46405 JR Z,ListObjectsToDraw_Skip
46407 BIT 4,(IX+7) Jump to ListObjectsToDraw_Skip if the object does not need drawing.
46411 JR Z,ListObjectsToDraw_Skip
46413 LD (HL),C Add the object number to the list.
46414 INC HL Move on in the list.
ListObjectsToDraw_Skip 46415 INC C Move on to the next object number.
46416 ADD IX,DE Move IX on to the next object record.
46418 DJNZ ListObjectsToDraw_Next Decrease the counter and loop until all the objects have been done.
46420 LD A,255 Take 255 as the end marker of the draw list.
46422 LD (HL),A Mark the end of the list.
46423 POP IX Restore IX from the stack.
46425 RET Return.
View the equivalent code in;
Prev: 46368 Up: Map Next: 46426