; mp5/boxortext.h
; by Douglas Jones, Dec 1, 2005

; fields of every box or text object
RENDER  =        0       ; points to render method of object
NEXT    =        4       ; points to next object in list (if any)

; all other fields are specific to subclasses of this parent class

; to statically allocate a box or text object, begin with this
; macro and then follow with fields specific to the specific class

        MACRO MAKEBOXORTEXT render, next
          W     render
          W     next
        ENDMAC

; the render methods of all box or text objects expect

        ; R3 -- pointer to object being rendered
        ; R4 -- pointer to X,Y of rendering origin
        ; returns R3 unchanged

; -------------
; fields of every coordinate pair object (used heavily in boxes and text)
X       =        0
Y       =        4

; macro to statically allocate coordinate pairs
        MACRO MAKECOORDINATES x, y
          W      x
          W      y
        ENDMAC

; -------------
; end marker value for linked lists
NULL    =        0

        END