From 9879fc638728aa486b93f963662881a10e53f7c8 Mon Sep 17 00:00:00 2001
From: photonstorm <rdavey@gmail.com>
Date: Wed, 18 Feb 2015 16:58:08 +0000
Subject: [PATCH] If you load an image and provide a key that was already
 in-use in the Cache, then the old image is now destroyed (via
 `Cache.removeImage`) and the new image takes its place.

---
 README.md           | 1 +
 src/loader/Cache.js | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/README.md b/README.md
index 97db603be..dac699d89 100644
--- a/README.md
+++ b/README.md
@@ -149,6 +149,7 @@ We've also removed functions and properties from Pixi classes that Phaser doesn'
 * InputHandler.enableDrag with a boundsRect set now takes into account the Sprites anchor when limiting the drag (thanks @unindented #1593)
 * InputHandler.enableDrag with a boundsSprite set now takes into account both the Sprites anchor and the boundsSprite anchor when limiting the drag.
 * Sound in Web Audio now uses AudioContext.onended to trigger when it will stop playing instead of using a time based value. This is only used if the sound doesn't loop and isn't an audio sprite, but will give a much more accurate `Sound.onStop` event. It also prevents short audio files from being cut off during playback (#1471) and accounts for time spent decoding.
+* If you load an image and provide a key that was already in-use in the Cache, then the old image is now destroyed (via `Cache.removeImage`) and the new image takes its place.
 
 ### Bug Fixes
 
diff --git a/src/loader/Cache.js b/src/loader/Cache.js
index 54b016946..a3d6964e9 100644
--- a/src/loader/Cache.js
+++ b/src/loader/Cache.js
@@ -495,6 +495,7 @@ Phaser.Cache.prototype = {
 
     /**
     * Adds an Image file into the Cache. The file must have already been loaded, typically via Phaser.Loader, but can also have been loaded into the DOM.
+    * If an image already exists in the cache with the same key then it is removed and destroyed, and the new image inserted in its place.
     *
     * @method Phaser.Cache#addImage
     * @param {string} key - The unique key by which you will reference this object.
@@ -503,6 +504,11 @@ Phaser.Cache.prototype = {
     */
     addImage: function (key, url, data) {
 
+        if (this.checkImageKey(key))
+        {
+            this.removeImage(key);
+        }
+
         this._images[key] = { url: url, data: data };
 
         this._images[key].frame = new Phaser.Frame(0, 0, 0, data.width, data.height, key, this.game.rnd.uuid());