Merge pull request #12173 from kevinz000/projectiles_2

Refactors projectile speed to pixels per second

code/__DEFINES/maths.dm

@@ -209,3 +209,5 @@
 
 /// Make sure something is a boolean TRUE/FALSE 1/0 value, since things like bitfield & bitflag doesn't always give 1s and 0s.
 #define FORCE_BOOLEAN(x) ((x)? TRUE : FALSE)
+
+#define TILES_TO_PIXELS(tiles)			(tiles * PIXELS)

code/__DEFINES/misc.dm

@@ -9,6 +9,9 @@
 #define TEXT_EAST			"[EAST]"
 #define TEXT_WEST			"[WEST]"
 
+/// world.icon_size
+#define PIXELS 32
+
 //These get to go at the top, because they're special
 //You can use these defines to get the typepath of the currently running proc/verb (yes procs + verbs are objects)
 /* eg:

code/__DEFINES/profile.dm

@@ -26,4 +26,4 @@
 
 #define PROFILE_ITEM_LEN 2
 #define PROFILE_ITEM_TIME 1
-#define PROFILE_ITEM_COUNT 2
+#define PROFILE_ITEM_COUNT 2

code/__DEFINES/subsystems.dm

@@ -117,6 +117,7 @@
 #define FIRE_PRIORITY_NPC			80
 #define FIRE_PRIORITY_MOBS			100
 #define FIRE_PRIORITY_TGUI			110
+#define FIRE_PRIORITY_PROJECTILES	200
 #define FIRE_PRIORITY_TICKER		200
 #define FIRE_PRIORITY_ATMOS_ADJACENCY	300
 #define FIRE_PRIORITY_CHAT			400