initial commit - cross reference with 5th port - obviously has compile errors

code/__DEFINES/math.dm

@@ -0,0 +1,17 @@
+#define PI						3.1415
+#define SPEED_OF_LIGHT			3e8		//not exact but hey!
+#define SPEED_OF_LIGHT_SQ		9e+16
+#define INFINITY				1e31	//closer then enough
+
+//atmos
+#define R_IDEAL_GAS_EQUATION	8.31	//kPa*L/(K*mol)
+#define ONE_ATMOSPHERE			101.325	//kPa
+#define T0C						273.15	// 0degC
+#define T20C					293.15	// 20degC
+#define TCMB					2.7		// -270.3degC
+
+//"fancy" math for calculating time in ms from tick_usage percentage and the length of ticks
+//percent_of_tick_used * (ticklag * 100(to convert to ms)) / 100(percent ratio)
+//collapsed to percent_of_tick_used * tick_lag
+#define TICK_DELTA_TO_MS(percent_of_tick_used) ((percent_of_tick_used) * world.tick_lag)
+#define TICK_USAGE_TO_MS(starting_tickusage) (TICK_DELTA_TO_MS(world.tick_usage-starting_tickusage))