Fixed the Body collide issues and optimised the process at the same time. Now the QuadTree appears to work perfectly as a result. Bonus!

examples/anchor1.php

@@ -24,17 +24,29 @@
 	function create() {
 
 		player = game.add.sprite(400, 300, 'ship');
+		player.alpha = 0.2;
+		player.body.collideWorldBounds = true;
+		player.body.bounce.setTo(1, 1);
+
+		//	The body offset is from the ANCHOR point of the Sprite, not the top-left (or center, etc)
+		player.body.setSize(60, 60, 0, 0);
 		player.anchor.setTo(0.5, 0.5);
+		player.body.velocity.x = 100;
 
 	}
 
 	function update() {
+		// console.log(Math.floor(player.center.x), Math.floor(player.center.y));
 		player.angle++;
+		player.scale.x += 0.005;
+		player.scale.y += 0.005;
 	}
 
 	function render() {
-		game.debug.renderSpriteCorners(player,true,true);
-		game.debug.renderRectangle(player.body.bounds);
+		// game.debug.renderSpriteCorners(player,true,true);
+		game.debug.renderRectangle(player.body);
+		game.debug.renderPixel(400, 300, 'rgb(255,0,0)');
+		game.debug.renderPoint(player.center, 'rgb(255,254,0)');
 	}
 
 })();