"distance" option, touch

Sortable.js

@@ -323,8 +323,8 @@
 				nextEl = dragEl.nextSibling;
 				activeGroup = options.group;
 
-				this._lastX = evt.clientX;
-				this._lastY = evt.clientY;
+				this._lastX = (touch||evt).clientX;
+				this._lastY = (touch||evt).clientY;
 
 				dragStartFn = function () {
 					// Delayed drag has been triggered
@@ -466,16 +466,18 @@
 
 
 		_onTouchMove: function (/**TouchEvent*/evt) {
+			if (tapEvt) {
+
+				var	touch = evt.touches ? evt.touches[0] : evt;
 
 				if (this.options.distance && this.options.distance > 0) {
 					// sorting will not start until mouse is dragged at a minimum distance
 					// this is used to prevent unwanted move during a simple click on a sortable element
-				if (!Sortable.active && !(Math.abs(evt.clientX - this._lastX) > this.options.distance || Math.abs(evt.clientY - this._lastY) > this.options.distance)) {
+					if (!Sortable.active && !(Math.abs(touch.clientX - this._lastX) > this.options.distance || Math.abs(touch.clientY - this._lastY) > this.options.distance)) {
 						return;
 					}
 				}
 
-			if (tapEvt) {
 				// only set the status to dragging, when we are actually dragging
 				if (!Sortable.active) {
 					this._dragStarted();
@@ -484,8 +486,7 @@
 				// as well as creating the ghost element on the document body
 				this._appendGhost();
 
-				var touch = evt.touches ? evt.touches[0] : evt,
-					dx = touch.clientX - tapEvt.clientX,
+				var dx = touch.clientX - tapEvt.clientX,
 					dy = touch.clientY - tapEvt.clientY,
 					translate3d = evt.touches ? 'translate3d(' + dx + 'px,' + dy + 'px,0)' : 'translate(' + dx + 'px,' + dy + 'px)';