addHook("PlayerThink", function(player) 

	if not(player.mo) then return end 	

  if (player.mo.skin == "shadow") then return end
	if (P_IsObjectOnGround(player.mo)) 
	and (player.mo.state == S_PLAY_RUN) 
	and not player.powers[pw_super]
		P_SpawnSkidDust(player, 13*FRACUNIT, sfx_none)
	end
end)