--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Engine/ErrorHandling.h	Fri Sep 19 02:57:42 2014 +0600
@@ -0,0 +1,65 @@
+#define _CRT_NON_CONFORMING_SWPRINTFS
+#pragma once
+
+#define Error(format, ...)             Error_impl_(__FILE__, __FUNCTION__, __LINE__, format, __VA_ARGS__)
+#define Assert(condition, ...) Assert_impl_(__FILE__, __FUNCTION__, __LINE__, condition, #condition,  __VA_ARGS__)
+
+
+
+#include <stdarg.h>
+#include <stdio.h>
+inline __declspec(noreturn) void Error_impl_(const char *filename, const char *functionname, int line,
+                                             const char *format, ...)
+{
+  va_list va;
+  va_start(va, format);
+  {
+    char header[4096];
+    sprintf(header, "Error in %s: %u\n\t%s\n\n", filename, line, functionname);
+
+    char msg_body[8192];
+    vsprintf(msg_body, format, va);
+
+    wchar_t msg[sizeof(header) + sizeof(msg_body)];
+    swprintf(msg, 8192, L"%S %S", header, msg_body);
+
+    extern void MsgBox(const wchar_t *, const wchar_t *);
+    MsgBox(msg, L"Error");
+  }
+  va_end(va);
+
+  #ifndef NODEBUG
+    __debugbreak();
+  #endif
+  exit(0);
+}
+
+
+inline void Assert_impl_(const char *filename, const char *functionname, int line,
+                         bool condition, const char *condition_string, const char *format = nullptr, ...)
+{
+  if (condition)
+    return;
+
+  va_list va;
+  va_start(va, format);
+  {
+    char header[4096];
+    sprintf(header, "Assertion in %s: %u\n\t%s:\n%s\n\n", filename, line, functionname, condition_string);
+
+    char msg_body[8192];
+    vsprintf(msg_body, format, va);
+    
+    wchar_t msg[sizeof(header) + sizeof(msg_body)];
+    if (format)
+      swprintf(msg, (sizeof(header) + sizeof(msg_body)), L"%S %S", header, msg_body);
+    else
+      swprintf(msg, (sizeof(header) + sizeof(msg_body)), L"%S", header);
+
+    extern void MsgBox(const wchar_t *, const wchar_t *);
+    MsgBox(msg, L"Assertion");
+  }
+  va_end(va);
+
+  __debugbreak();
+}
\ No newline at end of file