set flow(val){
		if( val ) {
			impulse = val;
			isFlow = true;
		} else {
			isFlow = false;
		}
	}
// adds a direction impulse to everything in this frame...
adds a direction impulse to everything in this frame
adds a direction impulse to everything in this frame
set flow(val){
		if( val ) {
			impulse = val;
			isFlow = true;
		} else {
			isFlow = false;
		}
	}
set flow ( val ) { if ( val ) { impulse = val ; isFlow = true ; } else { isFlow = false ; } }
adds a direction impulse to everything in this frame...
adds a direction impulse to everything in this frame ...