Available since LÖVE 0.9.2  
 This function is not supported in earlier versions. 
Gets whether the Fixture is destroyed. Destroyed fixtures cannot be used.
destroyed = Fixture:isDestroyed( )
None.
boolean destroyed
    © 2006–2016 LÖVE Development Team
Licensed under the GNU Free Documentation License, Version 1.3.
    https://love2d.org/wiki/Fixture:isDestroyed