Adds accuracy modifier support

code/modules/projectiles/gun.dm

@@ -21,9 +21,10 @@
 	var/fire_sound_text = "gunshot"
 	var/recoil = 0		//screen shake
 	var/silenced = 0
+	var/accuracy = 0 //accuracy is measured in tiles. +1 accuracy means that everything is effectively one tile closer for the purpose of miss chance, -1 means the opposite. launchers are not supported, at the moment.
 
 	var/last_fired = 0
-
+	
 	//aiming system stuff
 	var/keep_aim = 1 	//1 for keep shooting until aim is lowered
 						//0 for one bullet after tarrget moves and aim is lowered

code/modules/projectiles/projectile.dm

@@ -132,6 +132,7 @@
 	//accuracy bonus from aiming
 	if (istype(shot_from, /obj/item/weapon/gun))	//If you aim at someone beforehead, it'll hit more often.
 		var/obj/item/weapon/gun/daddy = shot_from	//Kinda balanced by fact you need like 2 seconds to aim
+		miss_modifier -= round(15*daddy.accuracy)
 		if (daddy.aim_targets && original in daddy.aim_targets) //As opposed to no-delay pew pew
 			miss_modifier += -30