added Engine::Object and ag::object::load; filled in ag::loadModel a bit more

git-svn-id: svn://anubis/anaglym/trunk@33 99a6e188-d820-4881-8870-2d33a10e2619

ag.cc

@@ -2,6 +2,7 @@
 #include "anaglym.h"
 #include "ag.h"
 #include "Video.h"
+#include <SDL.h>
 #include "wfobj/WFObj.hh"
 #include <unistd.h>                 /* usleep() */
 #include <lua.hpp>
@@ -22,6 +23,7 @@ namespace ag
             { "videoStart", videoStart },
             { "videoStop", videoStop },
             { "sleep", sleep },
+            { "endFrame", endFrame },
             { NULL, NULL }
         };
         luaL_register(L, "ag", functions);
@@ -95,28 +97,47 @@ namespace ag
     {
         int argc = lua_gettop(L);
 
-        if (argc == 1)
+        if (argc == 1 && lua_type(L, -1) == LUA_TSTRING)
         {
-            if (lua_type(L, -1) == LUA_TSTRING)
+            string modelname = lua_tostring(L, -1);
+            size_t pos = modelname.find_first_not_of(FILENAME_SAFE_CHARS);
+            if (pos == string::npos)
             {
-                string modelname = lua_tostring(L, -1);
-                size_t pos = modelname.find_first_not_of(FILENAME_SAFE_CHARS);
-                if (pos == string::npos)
+                string path = g_engine->locateResource(modelname + ".obj");
+                string physpath = g_engine->locateResource(modelname + ".phy");
+                if (path != "")
                 {
-                    string path = g_engine->locateResource(modelname);
-                    if (path != "")
-                    {
-                        WFObj * obj = new WFObj();
+                    WFObj * obj = new WFObj();
 
-                        if (!obj->load(path))
-                            cerr << "error loading object" << endl;
-                        GLuint dl = obj->render();
+                    if (obj->load(path))
+                    {
+                        int id = g_engine->addObject(obj);
+                        lua_newtable(L);
+                        lua_pushinteger(L, id);
+                        lua_setfield(L, -2, "id");
+                        lua_pushcfunction(L, object::draw);
+                        lua_setfield(L, -2, "draw");
+                        if (physpath != "")
+                        {
+                            /* TODO: ODE info */
+#if 0
+                            dGeomID gid =
+                                g_engine->getWorld().loadPhy(physpath);
+#endif
+                        }
+                        return 1;
+                    }
+                    else
+                    {
+                        delete obj;
+                        cerr << "error loading object" << endl;
                     }
                 }
             }
         }
 
-        return 0;
+        lua_pushnil(L);
+        return 1;
     }
 
     int videoStart(lua_State * L)
@@ -146,4 +167,31 @@ namespace ag
 
         return 0;
     }
+
+    int endFrame(lua_State * L)
+    {
+        SDL_GL_SwapBuffers();
+        return 0;
+    }
+
+    namespace object
+    {
+        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)
+                {
+                    int id = lua_tointeger(L, -1);
+                    Engine::Object * obj = g_engine->getObject(id);
+                    if (obj != NULL)
+                        obj->draw();
+                }
+                lua_pop(L, 1);
+            }
+            return 0;
+        }
+    }
 }

ag.h

@@ -13,6 +13,12 @@ namespace ag
     int videoStart(lua_State * L);
     int videoStop(lua_State * L);
     int sleep(lua_State * L);
+    int endFrame(lua_State * L);
+
+    namespace object
+    {
+        int draw(lua_State * L);
+    }
 }
 
 #endif

anaglym.cc

@@ -57,22 +57,20 @@ int main(int argc, char * argv[])
     return 0;
 }
 
-void Engine::reportErrors(int status)
-{
-    if (status != 0)
-    {
-        cerr << "Engine: Error: " << lua_tostring(m_luaState, -1) << endl;
-        lua_pop(m_luaState, 1); // remove error message
-    }
-}
-
 Engine::Engine()
 {
     m_video = new Video();
+    m_next_object_index = 1;
 }
 
 Engine::~Engine()
 {
+    for (std::map<int, Object *>::iterator it = m_objects.begin();
+         it != m_objects.end();
+         it++)
+    {
+        delete it->second;
+    }
     delete m_video;
 }
 
@@ -105,6 +103,15 @@ bool Engine::load(const char * program)
     lua_close(m_luaState);
 }
 
+void Engine::reportErrors(int status)
+{
+    if (status != 0)
+    {
+        cerr << "Engine: Error: " << lua_tostring(m_luaState, -1) << endl;
+        lua_pop(m_luaState, 1); // remove error message
+    }
+}
+
 void Engine::registerLibraries()
 {
     /* Load the Lua string library */
@@ -143,6 +150,23 @@ bool Engine::fileExists(const string & path)
     return false;
 }
 
+int Engine::addObject(WFObj * obj)
+{
+    int id = m_next_object_index;
+    Object * o = new Object();
+    o->wfobj = obj;
+    o->display_list = obj->render();
+    /* TODO: stl map insertion valid like this? */
+    m_objects[id] = o;
+    m_next_object_index++;
+    return id;
+}
+
+Engine::Object * Engine::getObject(int id)
+{
+    return m_objects.find(id) != m_objects.end() ? m_objects[id] : NULL;
+}
+
 void Engine::run()
 {
 }

anaglym.h

@@ -4,13 +4,25 @@
 
 #include <string>
 #include <lua.hpp>
+#include <map>
 #include "Video.h"
+#include "OdeWorld/OdeWorld.h"
+#include "wfobj/WFObj.hh"
 
 #define FILENAME_SAFE_CHARS "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_-"
 
 class Engine
 {
     public:
+        class Object
+        {
+            public:
+                WFObj * wfobj;
+                GLuint display_list;
+
+                void draw() { glCallList(display_list); }
+        };
+
         Engine();
         ~Engine();
 
@@ -19,14 +31,20 @@ class Engine
         bool load(const char * program);
         void run();
         void reportErrors(int status);
+        OdeWorld & getWorld() { return m_world; }
+        int addObject(WFObj * obj);
+        Object * getObject(int id);
 
     protected:
         void registerLibraries();
         bool fileExists(const std::string & path);
 
         lua_State * m_luaState;
-        Video * m_video;
+        Video *     m_video;
         std::string m_program_path;
+        OdeWorld    m_world;
+        std::map<int, Object *> m_objects;
+        int         m_next_object_index;
 };
 
 extern Engine * g_engine;