ArcadePhysics.World now has a checkCollision object which can be used to toggle collision against the 4 walls of its bounds.

Author: photonstorm

README.md

@@ -101,6 +101,7 @@ New Features:
 
 * Device.getUserMedia boolean added, useful if you need access to the webcam or microphone.
 * Math.removeRandom allows you to remove (and return) a random object from an array.
+* ArcadePhysics.World now has a checkCollision object which can be used to toggle collision against the 4 walls of its bounds.
 
 
 TODO:

src/physics/arcade/Body.js

@@ -446,26 +446,26 @@ Phaser.Physics.Arcade.Body.prototype = {
     */
     checkWorldBounds: function () {
 
-        if (this.position.x < this.game.physics.arcade.bounds.x)
+        if (this.position.x < this.game.physics.arcade.bounds.x && this.game.physics.arcade.checkCollision.left)
         {
             this.position.x = this.game.physics.arcade.bounds.x;
             this.velocity.x *= -this.bounce.x;
             this.blocked.left = true;
         }
-        else if (this.right > this.game.physics.arcade.bounds.right)
+        else if (this.right > this.game.physics.arcade.bounds.right && this.game.physics.arcade.checkCollision.right)
         {
             this.position.x = this.game.physics.arcade.bounds.right - this.width;
             this.velocity.x *= -this.bounce.x;
             this.blocked.right = true;
         }
 
-        if (this.position.y < this.game.physics.arcade.bounds.y)
+        if (this.position.y < this.game.physics.arcade.bounds.y && this.game.physics.arcade.checkCollision.up)
         {
             this.position.y = this.game.physics.arcade.bounds.y;
             this.velocity.y *= -this.bounce.y;
             this.blocked.up = true;
         }
-        else if (this.bottom > this.game.physics.arcade.bounds.bottom)
+        else if (this.bottom > this.game.physics.arcade.bounds.bottom && this.game.physics.arcade.checkCollision.down)
         {
             this.position.y = this.game.physics.arcade.bounds.bottom - this.height;
             this.velocity.y *= -this.bounce.y;

src/physics/arcade/World.js

@@ -29,6 +29,13 @@ Phaser.Physics.Arcade = function (game) {
     */
     this.bounds = new Phaser.Rectangle(0, 0, game.world.width, game.world.height);
 
+    /**
+    * Set the checkCollision properties to control for which bounds collision is processed.
+    * For example checkCollision.down = false means Bodies cannot collide with the World.bounds.bottom.
+    * @property {object} checkCollision - An object containing allowed collision flags.
+    */
+    this.checkCollision = { up: true, down: true, left: true, right: true };
+
     /**
     * @property {number} maxObjects - Used by the QuadTree to set the maximum number of objects per quad.
     */