Reloadable lasers- needs sprites

Reloadable lasers plus upgrade thing stuff.  Tested, works.  Not added
to game yet.  Not twohanded yet-- maybe we should leave it onehanded?

Numbers for the laser are still up in the air.  It's pretty neat.  You
can load it with different types of lasers and stuff.

code/modules/vehicles/cargo_train.dm

@@ -53,7 +53,7 @@
 		update_stats()
 		if(load && is_train_head())
 			load << "The drive motor briefly whines, then drones to a stop."
-	
+
 	if(is_train_head() && !on)
 		return 0
 
@@ -118,7 +118,7 @@
 
 		verbs -= /obj/vehicle/train/cargo/engine/verb/stop_engine
 		verbs -= /obj/vehicle/train/cargo/engine/verb/start_engine
-		
+
 		if(on)
 			verbs += /obj/vehicle/train/cargo/engine/verb/stop_engine
 		else
@@ -129,7 +129,7 @@
 
 	verbs -= /obj/vehicle/train/cargo/engine/verb/stop_engine
 	verbs -= /obj/vehicle/train/cargo/engine/verb/start_engine
-	
+
 	if(!on)
 		verbs += /obj/vehicle/train/cargo/engine/verb/start_engine
 	else
@@ -180,7 +180,7 @@
 
 	if(!istype(usr, /mob/living/carbon/human))
 		return
-	
+
 	if(get_dist(usr,src) <= 1)
 		usr << "The power light is [on ? "on" : "off"].\nThere are[key ? "" : " no"] keys in the ignition."
 		usr << "The charge meter reads [cell? round(cell.percent(), 0.01) : 0]%"
@@ -192,7 +192,7 @@
 
 	if(!istype(usr, /mob/living/carbon/human))
 		return
-	
+
 	if(on)
 		usr << "The engine is already running."
 		return
@@ -210,10 +210,10 @@
 	set name = "Stop engine"
 	set category = "Object"
 	set src in view(1)
-	
+
 	if(!istype(usr, /mob/living/carbon/human))
 		return
-	
+
 	if(!on)
 		usr << "The engine is already stopped."
 		return
@@ -229,10 +229,10 @@
 
 	if(!istype(usr, /mob/living/carbon/human))
 		return
-	
+
 	if(!key || (load && load != usr))
 		return
-	
+
 	if(on)
 		turn_off()
 
@@ -291,7 +291,7 @@
 /obj/vehicle/train/cargo/trolley/update_car(var/train_length, var/active_engines)
 	src.train_length = train_length
 	src.active_engines = active_engines
-	
+
 	if(!lead && !tow)
 		anchored = 0
 		if(verbs.Find(/atom/movable/verb/pull))

code/modules/vehicles/train.dm

@@ -116,7 +116,7 @@
 	set desc = "Unhitches this train from the one in front of it."
 	set category = "Object"
 	set src in view(1)
-	
+
 	if(!istype(usr, /mob/living/carbon/human))
 		return
 
@@ -139,11 +139,11 @@
 	if (lead)
 		user << "\red [src] is already hitched to something."
 		return
-	
+
 	if (T.tow)
 		user << "\red [T] is already towing something."
 		return
-	
+
 	//check for cycles.
 	var/obj/vehicle/train/next_car = T
 	while (next_car)
@@ -151,15 +151,15 @@
 			user << "\red That seems very silly."
 			return
 		next_car = next_car.lead
-	
+
 	//latch with src as the follower
 	lead = T
 	T.tow = src
 	dir = lead.dir
-	
+
 	if(user)
 		user << "\blue You hitch [src] to [T]."
-	
+
 	update_stats()
 
 
@@ -168,10 +168,10 @@
 	if (!lead)
 		user << "\red [src] is not hitched to anything."
 		return
-	
+
 	lead.tow = null
 	lead.update_stats()
-	
+
 	user << "\blue You unhitch [src] from [lead]."
 	lead = null
 
@@ -190,7 +190,7 @@
 
 //returns 1 if this is the lead car of the train
 /obj/vehicle/train/proc/is_train_head()
-	if (lead) 
+	if (lead)
 		return 0
 	return 1
 
@@ -209,7 +209,7 @@
 		if (T.tow == src)
 			lead.tow = null
 			lead.update_stats()
-			
+
 			lead = null
 			update_stats()
 			return