From 539dcdd18a1588a452d9e07028e234d09913a66e Mon Sep 17 00:00:00 2001
From: "Josh Shepard (jcs)" <josh.shepard@gmail.com>
Date: Wed, 4 Dec 2013 09:42:25 -0800
Subject: [PATCH] move 'dirty' flag for Tilemap to a per-layer flag. Fixes #242

---
 src/tilemap/Tilemap.js      | 20 +++++---------------
 src/tilemap/TilemapLayer.js | 12 ++++++------
 2 files changed, 11 insertions(+), 21 deletions(-)

diff --git a/src/tilemap/Tilemap.js b/src/tilemap/Tilemap.js
index 07b34872..87dda754 100644
--- a/src/tilemap/Tilemap.js
+++ b/src/tilemap/Tilemap.js
@@ -48,11 +48,6 @@ Phaser.Tilemap = function (game, key) {
 
     this.debugMap = [];
 
-    /**
-    * @property {boolean} dirty - Internal rendering related flag.
-    */
-    this.dirty = false;
-
     /**
     * @property {array} _results - Internal var.
     * @private
@@ -120,14 +115,12 @@ Phaser.Tilemap.prototype = {
             tileSpacing: 0,
             format: Phaser.Tilemap.CSV,
             data: data,
-            indexes: []
-
+            indexes: [],
+			dirty: true
         });
 
         this.currentLayer = this.layers.length - 1;
 
-        this.dirty = true;
-
     },
 
     /**
@@ -187,10 +180,9 @@ Phaser.Tilemap.prototype = {
         if (x >= 0 && x < this.layers[layer].width && y >= 0 && y < this.layers[layer].height)
         {
             this.layers[layer].data[y][x] = index;
+			this.layers[layer].dirty = true;
         }
 
-        this.dirty = true;
-
     },
 
     /**
@@ -254,10 +246,9 @@ Phaser.Tilemap.prototype = {
         if (x >= 0 && x < this.layers[layer].width && y >= 0 && y < this.layers[layer].height)
         {
             this.layers[layer].data[y][x] = index;
+			this.layers[layer].dirty = true;
         }
 
-        this.dirty = true;
-
     },
 
     /**
@@ -349,8 +340,7 @@ Phaser.Tilemap.prototype = {
             this.layers[layer].data[ diffY + tileblock[i].y ][ diffX + tileblock[i].x ] = tileblock[i].index;
         }
 
-        this.dirty = true;
-
+		this.layers[layer].dirty = true;
     },
 
     /**
diff --git a/src/tilemap/TilemapLayer.js b/src/tilemap/TilemapLayer.js
index 5efcaceb..e546cb10 100644
--- a/src/tilemap/TilemapLayer.js
+++ b/src/tilemap/TilemapLayer.js
@@ -359,7 +359,7 @@ Phaser.TilemapLayer.prototype.updateMapData = function (tilemap, layer) {
         this.layer = this.tilemap.layers[layer];
         this.index = layer;
         this.updateMax();
-        this.tilemap.dirty = true;
+		this.tilemap.layers[layer].dirty = true;
     }
 
 }
@@ -633,7 +633,7 @@ Phaser.TilemapLayer.prototype.updateMax = function () {
 */
 Phaser.TilemapLayer.prototype.render = function () {
 
-    if (this.tilemap && this.tilemap.dirty)
+	if (this.tilemap && this.tilemap.layers[this.index].dirty )
     {
         this.dirty = true;
     }
@@ -694,10 +694,10 @@ Phaser.TilemapLayer.prototype.render = function () {
 
     this.dirty = false;
 
-    if (this.tilemap.dirty)
-    {
-        this.tilemap.dirty = false;
-    }
+	if( this.tilemap.layers[this.index].dirty )
+	{
+		this.tilemap.layers[this.index].dirty = false;
+	}
 
     return true;