Tracked down an evil bug in Group.swap that caused the linked list to get corrupted in an upward (B to A) neighbour swap.

examples/wip/sort.js

@@ -0,0 +1,82 @@
+var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-example', { preload: preload, create: create, update: update, render: render });
+
+function preload() {
+
+    game.load.image('phaser', 'assets/sprites/phaser-dude.png');
+    game.load.spritesheet('veggies', 'assets/sprites/fruitnveg32wh37.png', 32, 32);
+
+}
+
+var sprite;
+var group;
+var oldY = 0;
+
+function create() {
+
+    game.stage.backgroundColor = '#2d2d2d';
+
+    // sprite = game.add.sprite(32, 200, 'phaser');
+    // sprite.name = 'phaser-dude';
+
+    group = game.add.group();
+
+    sprite = group.create(300, 200, 'phaser');
+    sprite.name = 'phaser-dude';
+
+    for (var i = 0; i < 10; i++)
+    {
+        var c = group.create(100 + Math.random() * 700, game.world.randomY, 'veggies', game.rnd.integerInRange(0, 36));
+        c.name = 'veg' + i;
+    }
+
+    game.input.onUp.add(sortGroup, this);
+    game.input.keyboard.addKeyCapture([ Phaser.Keyboard.LEFT, Phaser.Keyboard.RIGHT, Phaser.Keyboard.UP, Phaser.Keyboard.DOWN ]);
+
+}
+
+function sortGroup () {
+
+    console.log('%c                                                                                                ', 'background: #efefef');
+    group.sort();
+    group.dump(false);
+
+}
+
+function update() {
+
+    sprite.body.velocity.x = 0;
+    sprite.body.velocity.y = 0;
+
+    if (game.input.keyboard.isDown(Phaser.Keyboard.LEFT))
+    {
+        sprite.body.velocity.x = -200;
+    }
+    else if (game.input.keyboard.isDown(Phaser.Keyboard.RIGHT))
+    {
+        sprite.body.velocity.x = 200;
+    }
+
+    if (game.input.keyboard.isDown(Phaser.Keyboard.UP))
+    {
+        sprite.body.velocity.y = -200;
+    }
+    else if (game.input.keyboard.isDown(Phaser.Keyboard.DOWN))
+    {
+        sprite.body.velocity.y = 200;
+    }
+
+    if (sprite.y !== oldY)
+    {
+        // console.log('sorted');
+        // group.sort();
+        // oldY = sprite.y;
+    }
+
+}
+
+function render() {
+
+    // game.debug.renderText(group.cursor.name, 32, 32);
+    // game.debug.renderInputInfo(32, 32);
+
+}

examples/wip/swap.js

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+var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-example', { preload: preload, create: create, update: update, render: render });
+
+function preload() {
+
+    game.load.image('phaser', 'assets/sprites/phaser-dude.png');
+    game.load.spritesheet('veggies', 'assets/sprites/fruitnveg32wh37.png', 32, 32);
+
+}
+
+var group;
+var start = false;
+var swapCount = 0;
+var time = 0;
+var test = 0;
+
+function create() {
+
+    game.stage.backgroundColor = '#2d2d2d';
+
+    group = game.add.group();
+
+    for (var i = 0; i < 10; i++)
+    {
+        var c = group.create(100 + Math.random() * 700, game.world.randomY, 'veggies', game.rnd.integerInRange(0, 36));
+        c.name = 'veg' + i;
+    }
+
+    test = group.length;
+
+    game.input.onUp.add(toggleSwap, this);
+
+}
+
+function toggleSwap () {
+
+    if (start)
+    {
+        start = false;
+    }
+    else
+    {
+        start = true;
+    }
+
+}
+
+function update() {
+
+    if (start && game.time.now > time)
+    {
+        var a = group.getRandom();
+        var b = group.getRandom();
+
+        if (a.name !== b.name)
+        {
+            console.log('************************ NEW ROUND *********************');
+            group.dump(true);
+            console.log('Group Size: ' + group.length);
+            group.swap(a, b);
+            swapCount++;
+
+            if (group.length !== test)
+            {
+                start = false;
+                console.log('************************ SHIT *********************');
+                group.dump(true);
+                console.log('************************ SHIT *********************');
+            }
+
+            if (group.validate() == false)
+            {
+                start = false;
+                console.log('************************ VALIDATE FAIL *********************');
+                group.dump(true);
+                console.log('************************ VALIDATE FAIL *********************');
+            }
+
+        }
+
+        time = game.time.now + 100;
+    }
+
+}
+
+function render() {
+
+    game.debug.renderText('Swap: ' + swapCount, 32, 32);
+
+}