From 99a88359542e91da926efc6acd3e0142790d75a8 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop+git@gmail.com>
Date: Thu, 1 Oct 2009 03:00:59 +0000
Subject: [PATCH] added ag::object::getObject() helper method, stub
 getPosition() and setPosition() methods

git-svn-id: svn://anubis/anaglym/trunk@42 99a6e188-d820-4881-8870-2d33a10e2619
---
 ag.cc | 58 ++++++++++++++++++++++++++++++++++++++++++++++++----------
 ag.h  |  2 ++
 2 files changed, 50 insertions(+), 10 deletions(-)

diff --git a/ag.cc b/ag.cc
index 50af69d..b3c9a59 100644
--- a/ag.cc
+++ b/ag.cc
@@ -125,7 +125,11 @@ namespace ag
                         lua_setfield(L, -2, "draw");
                         if (physpath != "")
                         {
-                            g_engine->getObject(id)->loadPhy(physpath);
+                            Engine::Object * obj = g_engine->getObject(id);
+                            if (obj != NULL)
+                            {
+                                obj->loadPhy(physpath);
+                            }
                         }
                         return 1;
                     }
@@ -197,24 +201,58 @@ namespace ag
 
     namespace object
     {
+        static Engine::Object * getObject(lua_State * L, int index)
+        {
+            Engine::Object * ret = NULL;
+
+            lua_getfield(L, index, "id");
+            if (lua_type(L, -1) == LUA_TNUMBER)
+            {
+                int id = lua_tointeger(L, -1);
+                ret = g_engine->getObject(id);
+            }
+            lua_pop(L, 1);
+
+            return ret;
+        }
+
         int draw(lua_State * L)
         {
             int argc = lua_gettop(L);
             if (argc == 1 && lua_type(L, -1) == LUA_TTABLE)
             {
-                lua_getfield(L, -1, "id");
-                if (lua_type(L, -1) == LUA_TNUMBER)
+                Engine::Object * obj = getObject(L, -1);
+                if (obj != NULL)
                 {
-                    int id = lua_tointeger(L, -1);
-                    Engine::Object * obj = g_engine->getObject(id);
-                    if (obj != NULL)
-                    {
-                        obj->draw();
-                    }
+                    obj->draw();
                 }
-                lua_pop(L, 1);
             }
             return 0;
         }
+
+        int setPosition(lua_State * L)
+        {
+            int argc = lua_gettop(L);
+
+            if (argc == 4)
+            {
+                double position[3];
+                for (int i = 0; i < 3; i++)
+                {
+                    int type = lua_type(L, i);
+                    if (type == LUA_TNUMBER  || type == LUA_TSTRING)
+                    {
+                        position[i] = lua_tonumber(L, i + 2);
+                    }
+                }
+            }
+
+            return 0;
+        }
+
+        int getPosition(lua_State * L)
+        {
+            return 3;
+        }
     }
 }
diff --git a/ag.h b/ag.h
index e146cd9..fd62469 100644
--- a/ag.h
+++ b/ag.h
@@ -21,6 +21,8 @@ namespace ag
     namespace object
     {
         int draw(lua_State * L);
+        int setPosition(lua_State * L);
+        int getPosition(lua_State * L);
     }
 }