/*!
    Base class for a linked list of drawable objects.
    Note that "object" is used as a generic term, not in specific reference to
    game objects (though they are the most common thing in drawing lists).
*/
struct THDrawable : public THLinkList
{
    //! Draw the object at a specific point on a render target
    /*!
        Can also "draw" the object to the speakers, i.e. play sounds.
    */
    void (*m_fnDraw)(THDrawable* pSelf, THRenderTarget* pCanvas, int iDestX, int iDestY);

    //! Perform a hit test against the object
    /*!
        Should return true if when the object is drawn at (iDestX, iDestY) on a canvas,
        the point (iTestX, iTestY) is within / on the object.
    */
    bool (*m_fnHitTest)(THDrawable* pSelf, int iDestX, int iDestY, int iTestX, int iTestY);

    //! Drawing flags (zero or more list flags from #THDrawFlags).
    uint32_t m_iFlags;

    /** Returns true if instance is a multiple frame animation.
        Should be overloaded in derived class.
    */
    bool (*m_fnIsMultipleFrameAnimation)(THDrawable *pSelf);
};