Get First Dead example.

examples/groups/get first dead.js

@@ -0,0 +1,49 @@
+
+var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-example', { preload: preload, create: create, update: update, render: render });
+
+function preload() {
+
+    game.load.spritesheet('veg', 'assets/sprites/fruitnveg32wh37.png', 32, 32);
+    
+}
+
+var veg;
+
+function create() {
+
+    //  Create a group
+    veg = game.add.group();
+
+    //  Add 20 sprites to it - the 'false' parameter sets them all to dead
+    veg.createMultiple(20, 'veg', 0, false);
+
+    //  Set-up a simple repeating timer
+    game.time.events.repeat(Phaser.Timer.SECOND, 20, resurrect, this);
+    
+}
+
+function resurrect() {
+
+    //  Get a dead item
+    var item = veg.getFirstDead();
+
+    if (item)
+    {
+        //  And bring it back to life
+        item.reset(game.world.randomX, game.world.randomY);
+
+        //  This just changes its frame
+        item.frame = game.rnd.integerInRange(0, 36);
+    }
+
+}
+
+function update() {
+}
+
+function render() {
+
+    game.debug.text('One item will be resurrected every second', 32, 32);
+    game.debug.text('Living: ' + veg.countLiving() + '   Dead: ' + veg.countDead(), 32, 64);
+    
+}

examples/p2 physics/springs.js

@@ -4,11 +4,13 @@ var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-example', { preload:
 function preload() {
 
     game.load.image('atari', 'assets/sprites/atari130xe.png');
-	game.load.image('sky', 'assets/skies/sunset.png');
+    game.load.image('ball', 'assets/sprites/red_ball.png');
+	game.load.image('sky', 'assets/skies/cavern2.png');
 
 }
 
-var sprite;
+var sprite1;
+var sprite2;
 var cursors;
 
 function create() {
@@ -18,22 +20,15 @@ function create() {
 	//	Enable p2 physics
 	game.physics.startSystem(Phaser.Physics.P2JS);
 
-    //  Add a sprite
-	sprite = game.add.sprite(200, 200, 'atari');
+    //  Add 2 sprites which we'll join with a spring
+    sprite1 = game.add.sprite(200, 100, 'ball');
+	sprite2 = game.add.sprite(200, 300, 'atari');
 
-    //  Enable if for physics. This creates a default rectangular body.
-	game.physics.p2.enable(sprite);
+	game.physics.p2.enable([sprite1, sprite2]);
 
     //  Create our spring
-    var spring = game.physics.p2.createSpring(bodyA, bodyB, restLength, stiffness, damping, worldA, worldB, localA, localB);
-
-    // var spring = game.physics.p2.
-
-    //             var spring = new p2.Spring(bodyA,bodyB, {
-    //                 stiffness: k,
-    //                 restLength: l,
-    //                 damping : d
-    //             });
+    // var spring = game.physics.p2.createSpring(sprite1, sprite2, restLength, stiffness, damping, worldA, worldB, localA, localB);
+    // var spring = game.physics.p2.createSpring(sprite1, sprite2);
 
 
 

src/core/Group.js

@@ -274,6 +274,22 @@ Phaser.Group.prototype.create = function (x, y, key, frame, exists) {
 
     var child = new Phaser.Sprite(this.game, x, y, key, frame);
 
+    if (this.enableBody)
+    {
+        if (this.physicsBodyType === Phaser.Physics.ARCADE)
+        {
+            this.game.physics.arcade.enable(child);
+        }
+        else if (this.physicsBodyType === Phaser.Physics.NINJA && this.game.physics.ninja)
+        {
+            this.game.physics.ninja.enable(child);
+        }
+        else if (this.physicsBodyType === Phaser.Physics.P2JS && this.game.physics.p2)
+        {
+            this.game.physics.p2.enable(child, this.enableBodyDebug);
+        }
+    }
+
     child.exists = exists;
     child.visible = exists;
     child.alive = exists;
@@ -292,22 +308,6 @@ Phaser.Group.prototype.create = function (x, y, key, frame, exists) {
         this.cursor = child;
     }
 
-    if (this.enableBody)
-    {
-        if (this.physicsBodyType === Phaser.Physics.ARCADE)
-        {
-            this.game.physics.arcade.enable(child);
-        }
-        else if (this.physicsBodyType === Phaser.Physics.NINJA && this.game.physics.ninja)
-        {
-            this.game.physics.ninja.enable(child);
-        }
-        else if (this.physicsBodyType === Phaser.Physics.P2JS && this.game.physics.p2)
-        {
-            this.game.physics.p2.enable(child, this.enableBodyDebug);
-        }
-    }
-
     return child;
 
 }

src/physics/p2/Spring.js

@@ -5,14 +5,14 @@
 */
 
 /**
-* Creates a spring, connecting two bodies.
+* Creates a spring, connecting two bodies. A spring can have a resting length, a stiffness and damping.
 *
 * @class Phaser.Physics.P2.Spring
 * @classdesc Physics Spring Constructor
 * @constructor
 * @param {Phaser.Physics.P2} world - A reference to the P2 World.
-* @param {Phaser.Physics.P2.Body} bodyA - First connected body.
-* @param {Phaser.Physics.P2.Body} bodyB - Second connected body.
+* @param {p2.Body} bodyA - First connected body.
+* @param {p2.Body} bodyB - Second connected body.
 * @param {number} [restLength=1] - Rest length of the spring. A number > 0.
 * @param {number} [stiffness=100] - Stiffness of the spring. A number >= 0.
 * @param {number} [damping=1] - Damping of the spring. A number >= 0.
@@ -63,7 +63,7 @@ Phaser.Physics.P2.Spring = function (world, bodyA, bodyB, restLength, stiffness,
         options.localAnchorB = [ world.pxm(localB[0]), world.pxm(localB[1]) ];
     }
 
-    p2.Spring.call(this, bodyA.data, bodyB.data, options);
+    p2.Spring.call(this, bodyA, bodyB, options);
 
 }
 

src/physics/p2/World.js

@@ -843,7 +843,7 @@ Phaser.Physics.P2.prototype = {
     },
 
     /**
-    * Populates and returns an array of all current Bodies in the world.
+    * Populates and returns an array with references to of all current Bodies in the world.
     *
     * @method Phaser.Physics.P2#getBodies
     * @return {array<Phaser.Physics.P2.Body>} An array containing all current Bodies in the world.
@@ -862,6 +862,35 @@ Phaser.Physics.P2.prototype = {
 
     },
 
+    /**
+    * Checks the given object to see if it has a p2.Body and if so returns it.
+    *
+    * @method Phaser.Physics.P2#getBody
+    * @param {object} object - The object to check for a p2.Body on.
+    * @return {p2.Body} The p2.Body, or null if not found.
+    */
+    getBody: function (object) {
+
+        if (object['world'])
+        {
+            //  Native p2 body
+            return object;
+        }
+        else if (object instanceof Phaser.Physics.P2.Body)
+        {
+            //  Phaser P2 Body
+            return object.data;
+        }
+        else if (object['body'] && object['body'].type === Phaser.Physics.P2JS)
+        {
+            //  Sprite, TileSprite, etc
+            return object.body.data;
+        }
+
+        return null;
+
+    },
+
     /**
     * Populates and returns an array of all current Springs in the world.
     *
@@ -1031,11 +1060,11 @@ Phaser.Physics.P2.prototype = {
     },
 
     /**
-    * Creates a spring, connecting two bodies.
+    * Creates a spring, connecting two bodies. A spring can have a resting length, a stiffness and damping.
     *
     * @method Phaser.Physics.P2#createSpring
-    * @param {Phaser.Physics.P2.Body} bodyA - First connected body.
-    * @param {Phaser.Physics.P2.Body} bodyB - Second connected body.
+    * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyA - First connected body.
+    * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyB - Second connected body.
     * @param {number} [restLength=1] - Rest length of the spring. A number > 0.
     * @param {number} [stiffness=100] - Stiffness of the spring. A number >= 0.
     * @param {number} [damping=1] - Damping of the spring. A number >= 0.
@@ -1050,7 +1079,17 @@ Phaser.Physics.P2.prototype = {
     */
     createSpring: function (bodyA, bodyB, restLength, stiffness, damping, worldA, worldB, localA, localB) {
 
-        return new Phaser.Physics.P2.Spring(this, bodyA, bodyB, restLength, stiffness, damping, worldA, worldB, localA, localB);
+        bodyA = this.getBody(bodyA);
+        bodyB = this.getBody(bodyB);
+
+        if (!bodyA || !bodyB)
+        {
+            console.warn('Cannot create Spring, invalid body objects given');
+        }
+        else
+        {
+            return new Phaser.Physics.P2.Spring(this, bodyA, bodyB, restLength, stiffness, damping, worldA, worldB, localA, localB);
+        }
 
     },