Texture & mouse functions; refactoring & fixes

- cleaned up and added documentation to engine.h
- refactored CEngine interface and associated structs
- added mouse handling functions in CApplication & CEngine
- fixed bugs in projection matrix setting
- changed texture loading & handling
- added const-values in CDevice & CGLDevice
- changed event management in CApplication
- other minor changes & bugfixes

1 files changed, 5 insertions, 5 deletions

diff --git a/src/common/singleton.h b/src/common/singleton.h
index ee01b24..4df7878 100644
--- a/src/common/singleton.h
+++ b/src/common/singleton.h
@@ -29,21 +29,21 @@ template<typename T> class CSingleton
 
     public:
         static T& GetInstance() {
-            aserrt(mInstance);
+            assert(mInstance != NULL);
             return *mInstance;
         }
 
-        static T& GetInstancePointer() {
-            aserrt(mInstance);
+        static T* GetInstancePointer() {
+            assert(mInstance != NULL);
             return mInstance;
         }
 
         static bool IsCreated() {
-            return mInstance != NULL; 
+            return mInstance != NULL;
         }
 
         CSingleton() {
-            assert(!mInstance);
+            assert(mInstance == NULL);
             mInstance = static_cast<T *>(this);
         }