graphics optimization feature inspirated by diablo3 engine

* the rendering now consits of two panes
- the background pane (for animated stuff like the map)
- the foreground pane (for steady stuff, like UI)
each pane has it own max FPS and works idependently
this may increase graphics performance on many platforms

src/framework/stdext/stdext.h

@@ -31,5 +31,6 @@
 #include "math.h"
 #include "string.h"
 #include "dumper.h"
+#include "time.h"
 
 #endif

src/framework/stdext/time.h

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2010-2012 OTClient <https://github.com/edubart/otclient>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef STDEXT_TIME_H
+#define STDEXT_TIME_H
+
+#include "types.h"
+#include <chrono>
+#include <unistd.h>
+
+namespace stdext {
+
+const static std::chrono::system_clock::time_point startup_time = std::chrono::high_resolution_clock::now();
+inline ticks_t millis() { return std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::high_resolution_clock::now() - startup_time).count(); }
+inline ticks_t micros() { return std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::high_resolution_clock::now() - startup_time).count(); }
+inline void millisleep(uint32 ms) { usleep(ms * 1000); };
+inline void microsleep(uint32 us) { usleep(us); };
+
+}
+
+#endif
+

src/framework/stdext/types.h

@@ -39,8 +39,6 @@ typedef int32_t int32;
 typedef int16_t int16;
 typedef int8_t int8;
 
-// note that on 32 bit platforms the max ticks will overflow for values above 2,147,483,647
-// thus this means that the app may cause unknown behavior after running 24 days without restarting
-typedef long ticks_t;
+typedef int64_t ticks_t;
 
 #endif