Merge pull request #6295 from Citadel-Station-13/upstream-merge-36999

[MIRROR] Adds kickback to mecha weapons.

code/game/mecha/equipment/weapons/weapons.dm

@@ -8,6 +8,7 @@
 	var/randomspread = 0 //use random spread for machineguns, instead of shotgun scatter
 	var/projectile_delay = 0
 	var/firing_effect_type = /obj/effect/temp_visual/dir_setting/firing_effect	//the visual effect appearing when the weapon is fired.
+	var/kickback = TRUE //Will using this weapon in no grav push mecha back.
 
 /obj/item/mecha_parts/mecha_equipment/weapon/can_attach(obj/mecha/combat/M)
 	if(..())
@@ -49,7 +50,9 @@
 		playsound(chassis, fire_sound, 50, 1)
 
 		sleep(max(0, projectile_delay))
-
+	
+	if(kickback)
+		chassis.newtonian_move(turn(chassis.dir,180))
 	chassis.log_message("Fired from [src.name], targeting [target].")
 	return 1
 
@@ -152,6 +155,7 @@
 	energy_drain = 200
 	equip_cooldown = 150
 	range = MELEE|RANGED
+	kickback = FALSE
 
 /obj/item/mecha_parts/mecha_equipment/weapon/honker/can_attach(obj/mecha/combat/honker/M)
 	if(..())