-////
-//// Constants
-////
-
-
-/// Version number. If this is left empty, the current date (in the format
-/// YYMMDD) is used as a version number.
-
-const std::string EngineVersion = "";
-
-
-////
-//// Macros
-////
-
-#define Min(x, y) (((x) < (y))? (x) : (y))
-#define Max(x, y) (((x) < (y))? (y) : (x))
-#define Abs(a) (((a) < 0) ? -(a) : (a))
-
-
-////
-//// Prototypes
-////
-
-extern const std::string engine_name();
-extern int get_system_time();