src/things.adb


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package body Things is


    procedure Draw
           (This : in Thing;
            X, Y : in Integer) is
    begin
        if This.Self_Image /= null then
            This.Self_Image.Draw (X, Y);
        end if;
    end Draw;


    function "="
           (A, B : in Thing)
        return Boolean is
    begin
        return A.Self_Image = B.Self_Image;
    end "=";


end Things;