Fixed drag sprite + offsets and center locking

Tests/input/drag sprite 1.js

@@ -0,0 +1,22 @@
+/// <reference path="../../Phaser/Game.ts" />
+(function () {
+    var game = new Phaser.Game(this, 'game', 800, 600, init, create, null, render);
+    function init() {
+        //  Using Phasers asset loader we load up a PNG from the assets folder
+        game.loader.addImageFile('sprite', 'assets/sprites/atari130xe.png');
+        game.loader.load();
+    }
+    var sprite;
+    function create() {
+        sprite = game.add.sprite(200, 200, 'sprite');
+        //  Enable Input detection
+        sprite.input.start(0, false, true);
+        sprite.input.enableDrag(true);
+        sprite.input.allowVerticalDrag = false;
+        //sprite.input.dragOffset.setTo(0, 50);
+            }
+    function render() {
+        game.input.renderDebugInfo(32, 32);
+        sprite.input.renderDebugInfo(300, 32);
+    }
+})();

Tests/input/drag sprite 1.ts

@@ -0,0 +1,38 @@
+/// <reference path="../../Phaser/Game.ts" />
+
+(function () {
+
+    var game = new Phaser.Game(this, 'game', 800, 600, init, create, null, render);
+
+    function init() {
+
+        //  Using Phasers asset loader we load up a PNG from the assets folder
+        game.loader.addImageFile('sprite', 'assets/sprites/atari130xe.png');
+        game.loader.load();
+
+    }
+
+    var sprite: Phaser.Sprite;
+
+    function create() {
+
+        sprite = game.add.sprite(200, 200, 'sprite');
+
+        //  Enable Input detection
+        sprite.input.start(0, false, true);
+
+        sprite.input.enableDrag(true);
+
+        //sprite.input.allowVerticalDrag = false;
+        //sprite.input.dragOffset.setTo(0, 50);
+
+    }
+
+    function render() {
+
+        game.input.renderDebugInfo(32, 32);
+        sprite.input.renderDebugInfo(300, 32);
+
+    }
+
+})();