Makes diagonal movement euclidean

code/__DEFINES/maths.dm

@@ -4,6 +4,8 @@
 
 #define NUM_E 2.71828183
 
+#define SQRT_2 1.414214
+
 #define PI						3.1416
 #define INFINITY				1e31	//closer then enough
 

code/modules/mob/mob_movement.dm

@@ -95,7 +95,7 @@
 	. = ..()
 
 	if((direction & (direction - 1)) && mob.loc == n) //moved diagonally successfully
-		add_delay *= 2
+		add_delay *= SQRT_2
 	mob.set_glide_size(DELAY_TO_GLIDE_SIZE(add_delay), FALSE)
 	move_delay += add_delay
 	if(.) // If mob is null here, we deserve the runtime