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⌂ ∞ Aviator on the BBC Micro

3D geometry: SetObjectCoords (Part 5 of 11)

       Name: SetObjectCoords (Part 5 of 11)                          [Show more]
       Type: Subroutine
   Category: 3D geometry
    Summary: Logic for checking which objects to pre-process
  Deep dive: 3D objects

    Context: See this subroutine in context in the source code
 References: No direct references to this subroutine in this source file




.objc3

 CPY #34                \ If the object ID >= 34, jump to objc9 to process the
 BCS objc9              \ object

 CPY #30                \ If the object ID < 30, jump to objc9 to process the
 BCC objc9              \ object

 BNE objc6              \ If the object ID <> 30, i.e. 31, 32 or 33, jump to
                        \ objc6 to pre-process the object

                        \ Otherwise the object ID is 30, so fall through into
                        \ part 6 to pre-process object 30