[nacltoons] Add compound shapes.

nacltoons/data/res/loader.lua

 -- Copyright (c) 2013 The Chromium Authors. All rights reserved.
 -- Use of this source code is governed by a BSD-style license that can be
 -- found in the LICENSE file.
 
 -- Main entry points of the lua game engine.
 -- Currently this file exposed 3 functions to the C++ code during
 -- startup:
 --  - LoadGame  (called my game_manager to load game.def)
 --  - LoadLevel  (called by level_layer to load a level)
 --
@@ skipping 155 matching lines @@
         local winsize = CCDirector:sharedDirector():getWinSize()
         local sprite = CCSprite:create(game_obj.assets.background_image)
         sprite:setPosition(ccp(winsize.width/2, winsize.height/2))
         layer:addChild(sprite)
     end
 
     -- Load sprites
     for _, sprite_def in ipairs(level_obj.sprites) do
         RegisterObjectDef(sprite_def)
         sprite_def.node = drawing.CreateSprite(sprite_def)
-        layer:addChild(sprite_def.node, 1, sprite_def.tag)
         LoadScript(sprite_def)
     end
 
     -- Load shapes
+    local function LoadShapes(shapes)
+        for _, shape_def in ipairs(shapes) do
+            if #shape_def > 0 then
+                LoadShapes(shape_def)
+            else
+                RegisterObjectDef(shape_def)
+                shape_def.node = drawing.CreateShape(shape_def)
+                LoadScript(shape_def)
+            end
+        end
+    end
+
     if level_obj.shapes then
-        for _, shape_def in ipairs(level_obj.shapes) do
-            RegisterObjectDef(shape_def)
-            shape_def.node = drawing.CreateShape(shape_def)
-            LoadScript(shape_def)
-        end
+        LoadShapes(level_obj.shapes)
     end
 
     -- Load custom level script
     level_obj.node = level_obj.layer
     LoadScript(level_obj)
 
     if game_obj.script.Update then
         level_obj.layer:scheduleUpdateWithPriorityLua(GameUpdate, 0)
     end
 
@@ skipping 58 matching lines @@
     CallCollisionHandler(tag1, tag2, 'OnContactEnded')
 end
 
 function StartLevel(level_number)
     -- only call handlers if the objects in question have tags
     -- that are known to the currently running level
     if game_obj.script.StartLevel then
         game_obj.script.StartLevel(level_number)
     end
 end