New Scene class definition. Also fixed a compile error for some users involving the definition of IID_IXAudio2

Client/Audio/windows/xaudio2.cpp

@@ -0,0 +1,5 @@
+#include <initguid.h>
+
+DEFINE_GUID(CLSID_XAudio2, 0xe21a7345, 0xeb21, 0x468e, 0xbe, 0x50, 0x80, 0x4d, 0xb9, 0x7c, 0xf7, 0x08);
+DEFINE_GUID(CLSID_XAudio2_Debug, 0xf7a76c21, 0x53d4, 0x46bb, 0xac, 0x53, 0x8b, 0x45, 0x9c, 0xae, 0x46, 0xbd);
+DEFINE_GUID(IID_IXAudio2, 0x8bcf1f58, 0x9fe7, 0x4583, 0x8a, 0xc6, 0xe2, 0xad, 0xc4, 0x65, 0xc8, 0xbb);

Client/Audio/windows/xaudio2.hpp

@@ -9,7 +9,7 @@
 #undef NULL
 #define NULL 0
 
-#include <initguid.h>
+#include <guiddef.h>
 #include <mmreg.h>
 
 DEFINE_GUID(CLSID_XAudio2, 0xe21a7345, 0xeb21, 0x468e, 0xbe, 0x50, 0x80, 0x4d, 0xb9, 0x7c, 0xf7, 0x08);

Client/CMakeLists.txt

@@ -6,6 +6,7 @@ if(WIN32)
         Client.cpp
         MessageHandler.cpp
         Audio/Startup.cpp
+        Audio/windows/XAudio2.cpp
         Graphics/Startup.cpp
         Graphics/Viewport.cpp
         resources/Resource.rc

Client/Client.cpp

@@ -26,6 +26,8 @@ namespace Window {
 int CreateWindowInvisible(HINSTANCE hInst, unsigned Width, unsigned Height, bool Fullscreen);
 void Shutdown();
 
+Scene * CurrentScene;
+
 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int)
 {
     int result;
@@ -75,6 +77,9 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int)
         }
     }
     
+    CurrentScene = new LoginScreen();
+    CurrentScene->Render();
+    
     MSG msg;
     while(GetMessage(&msg, NULL, 0, 0))
     {

Client/EngineInterface.hpp

@@ -27,8 +27,10 @@
 #include "version.h"
 #include "System/System.hpp"
 #include "Resources/Resource.h"
-#include "Graphics/Graphics.hpp"
+
 #include "Audio/Audio.hpp"
+#include "Graphics/Graphics.hpp"
+#include "Scene/Scene.hpp"
 
 //IsometricEngine.cpp
 namespace Window {

Client/Scene/Scene.hpp

@@ -0,0 +1,58 @@
+/*
+    Niotso - Copyright (C) 2012 Fatbag <X-Fi6@phppoll.org>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+class Scene {
+    const float TickPeriod;
+    float TimeDelta;
+    virtual int Run(float TimeDelta) = 0;
+
+  protected:
+    Scene(float c) : TickPeriod(c), TimeDelta(0) {}
+
+  public:
+    int RunFor(float TimeDelta) {
+        if(TickPeriod == 0){
+            return Run(TimeDelta);
+        }
+        
+        bool Redraw = false;
+        this->TimeDelta += TimeDelta;
+        while(this->TimeDelta >= 0){
+            int result = Run(TickPeriod);
+            if(result == System::SHUTDOWN)
+                return System::SHUTDOWN;
+            if(result > 0) Redraw = true;
+            this->TimeDelta -= TickPeriod;
+        }
+        return (Redraw) ? 1 : -1;
+    }
+    
+    virtual void Render() = 0;
+};
+
+class LoginScreen : public Scene {
+  public: LoginScreen() : Scene(1.0f/15) {}
+
+  private:
+    int Run(float){
+        return 0;
+    }
+
+  public:
+    void Render(){
+    }
+};

Client/System/System.hpp

@@ -26,6 +26,10 @@ namespace System {
     //Event objects
     extern HANDLE Shutdown;
     extern HANDLE Initialized[2], Terminated[2];
+    
+    enum {
+        SHUTDOWN
+    };
 }
 
 enum {