Tilemap: add method for converting layer from dynamic to static

Author: mikewesthad

v3/src/gameobjects/tilemap/Tilemap.js

@@ -276,6 +276,27 @@ var Tilemap = new Class({
         return layer;
     },
 
+    convertLayerToStatic: function (layer)
+    {
+        layer = this.getLayer(layer);
+        if (layer === null) { return null; }
+
+        var dynamicLayer = layer.tilemapLayer;
+
+        if (!dynamicLayer || !(dynamicLayer instanceof DynamicTilemapLayer))
+        {
+            return null;
+        }
+
+        var staticLayer = new StaticTilemapLayer(dynamicLayer.scene, dynamicLayer.map,
+            dynamicLayer.layerIndex, dynamicLayer.tileset, dynamicLayer.x, dynamicLayer.y);
+        this.scene.sys.displayList.add(staticLayer);
+
+        dynamicLayer.destroy();
+
+        return staticLayer;
+    },
+
     copy: function (srcTileX, srcTileY, width, height, destTileX, destTileY, recalculateFaces, layer)
     {
         layer = this.getLayer(layer);

v3/src/gameobjects/tilemap/dynamiclayer/DynamicTilemapLayer.js

@@ -73,7 +73,8 @@ var DynamicTilemapLayer = new Class({
 
     destroy: function ()
     {
-        this.layer.tilemapLayer = undefined;
+        // Uninstall this layer only if it is still installed on the LayerData object
+        if (this.layer.tilemapLayer === this) { this.layer.tilemapLayer = undefined; }
         this.map = undefined;
         this.layer = undefined;
         this.tileset = undefined;

v3/src/gameobjects/tilemap/staticlayer/StaticTilemapLayer.js

@@ -36,7 +36,7 @@ var StaticTilemapLayer = new Class({
         this.layer = tilemap.layers[layerIndex];
         this.tileset = tileset;
 
-        // Link the layer data with this dynamic tilemap layer
+        // Link the layer data with this static tilemap layer
         this.layer.tilemapLayer = this;
 
         this.vbo = null;
@@ -221,7 +221,8 @@ var StaticTilemapLayer = new Class({
 
     destroy: function ()
     {
-        this.layer.tilemapLayer = undefined;
+        // Uninstall this layer only if it is still installed on the LayerData object
+        if (this.layer.tilemapLayer === this) { this.layer.tilemapLayer = undefined; }
         this.map = undefined;
         this.layer = undefined;
         this.tileset = undefined;