/** Manually clear the force buffer on all bodies. By default, forces are cleared automatically after each call to Step. The * default behavior is modified by calling SetAutoClearForces. The purpose of this function is to support sub-stepping. * Sub-stepping is often used to maintain a fixed sized time step under a variable frame-rate. When you perform sub-stepping * you will disable auto clearing of forces and instead call ClearForces after all sub-steps are complete in one pass of your * game loop. {@link #setAutoClearForces(boolean)} */ public void clearForces () { world.clearForces(); }