+//currently not needed
+//template<typename T> struct alignment_trick { char c; T member; };
+//#define ALIGNOF(type) offsetof (alignment_trick<type>, member)
+
+#ifdef _WIN32
+ #include <windows.h>
+
+ #define sleep_ms(x) Sleep(x)
+#else
+ #include <unistd.h>
+ #include <stdint.h> //for uintptr_t
+
+ #define sleep_ms(x) usleep(x*1000)
+#endif
+
+#ifdef _MSC_VER
+ #define ALIGNOF(x) __alignof(x)
+ #define strtok_r(x, y, z) strtok_s(x, y, z)
+ #define strtof(x, y) (float)strtod(x, y)
+ #define strtoll(x, y, z) _strtoi64(x, y, z)
+ #define strtoull(x, y, z) _strtoui64(x, y, z)
+#else
+ #define ALIGNOF(x) __alignof__(x)
+#endif
+
+#ifdef __MINGW32__
+ #define strtok_r(x, y, z) mystrtok_r(x, y, z)
+#endif
+
+#define PADDING(x, y) ((ALIGNOF(y) - ((uintptr_t)(x) & (ALIGNOF(y) - 1))) & (ALIGNOF(y) - 1))
+
+namespace porting
+{
+
+/*
+ Signal handler (grabs Ctrl-C on POSIX systems)
+*/
+
+void signal_handler_init(void);
+// Returns a pointer to a bool.
+// When the bool is true, program should quit.
+bool * signal_handler_killstatus(void);
+
+/*
+ Path of static data directory.
+*/
+extern std::string path_share;
+
+/*
+ Directory for storing user data. Examples:
+ Windows: "C:\Documents and Settings\user\Application Data\<PROJECT_NAME>"
+ Linux: "~/.<PROJECT_NAME>"
+ Mac: "~/Library/Application Support/<PROJECT_NAME>"
+*/
+extern std::string path_user;
+
+/*
+ Get full path of stuff in data directory.
+ Example: "stone.png" -> "../data/stone.png"
+*/
+std::string getDataPath(const char *subpath);
+
+/*
+ Initialize path_share and path_user.
+*/
+void initializePaths();
+
+/*
+ Resolution is 10-20ms.
+ Remember to check for overflows.
+ Overflow can occur at any value higher than 10000000.
+*/
+#ifdef _WIN32 // Windows
+ #include <windows.h>
+ inline u32 getTimeMs()
+ {
+ return GetTickCount();
+ }
+#else // Posix
+ #include <sys/time.h>
+ inline u32 getTimeMs()
+ {
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ return tv.tv_sec * 1000 + tv.tv_usec / 1000;
+ }
+ /*#include <sys/timeb.h>
+ inline u32 getTimeMs()
+ {
+ struct timeb tb;
+ ftime(&tb);
+ return tb.time * 1000 + tb.millitm;
+ }*/