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⌂ ∞ Revs on the BBC Micro

3D objects: HideObject

       Name: HideObject                                              [Show more]
       Type: Subroutine
   Category: 3D objects
    Summary: Set an object to be hidden

    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * BuildVisibleCar calls HideObject
             * SetObjectDetails calls HideObject




 Arguments:

   objectNumber         The number of the object to hide



.HideObject

 LDY objectNumber       \ Set Y to the number of the object to hide

 LDA objectStatus,Y     \ Set A to the object's status byte

 ORA #%10000000         \ Set bit 7 in the object's status byte in A, which
                        \ marks the object as hidden

                        \ Fall through into SetObjectStatus to store the updated
                        \ object status byte