Sprinting, Stamina and Temporary Modifiers (#1030)

Introduces:
- Temporary modifiers process and datums for that
- A new stamina and sprinting mechanic. That is in need of further development! Weee!

code/modules/mob/mob_movement.dm

@@ -179,7 +179,7 @@
 		Process_Incorpmove(direct)
 		return
 
-	if(moving)	return 0
+	if(moving) return 0
 
 	if(world.time < move_delay)	return
 
@@ -209,6 +209,8 @@
 					if(item.zoom)
 						item.zoom()
 						break
+
+				//TODO: REMOVE This stupid zooming stuff
 				/*
 				if(locate(/obj/item/weapon/gun/energy/sniperrifle, mob.contents))		// If mob moves while zoomed in with sniper rifle, unzoom them.
 					var/obj/item/weapon/gun/energy/sniperrifle/s = locate() in mob
@@ -257,14 +259,21 @@
 
 		move_delay = world.time//set move delay
 		mob.last_move_intent = world.time + 10
-		switch(mob.m_intent)
-			if("run")
-				if(mob.drowsyness > 0)
-					move_delay += 6
-				move_delay += 1+config.run_speed
-			if("walk")
-				move_delay += 7+config.walk_speed
-		move_delay += mob.movement_delay()
+		if (ishuman(mob))
+
+			var/mob/living/carbon/human/H = mob
+			var/tally = mob.movement_delay()+config.walk_speed
+			//If we're sprinting and able to continue sprinting, then apply the sprint bonus ontop of this
+			if (H.m_intent == "run" && H.species.handle_sprint_cost(H, tally))//This will return false if we collapse from exhaustion
+				tally = tally/(1+H.sprint_speed_factor)
+			else
+				tally = max(tally, H.min_walk_delay)//clamp walking speed if its limited
+			move_delay += tally
+
+		else
+			move_delay += config.walk_speed
+			move_delay += mob.movement_delay()
+
 
 		var/tickcomp = 0 //moved this out here so we can use it for vehicles
 		if(config.Tickcomp)
@@ -272,10 +281,11 @@
 			tickcomp = ((1/(world.tick_lag))*1.3) - 1.3
 			move_delay = move_delay + tickcomp
 
+
 		if(istype(mob.buckled, /obj/vehicle))
 			//manually set move_delay for vehicles so we don't inherit any mob movement penalties
 			//specific vehicle move delays are set in code\modules\vehicles\vehicle.dm
-			move_delay = world.time + tickcomp
+			move_delay = world.time
 			//drunk driving
 			if(mob.confused && prob(20))
 				direct = pick(cardinal)
@@ -351,7 +361,6 @@
 			G.adjust_position()
 
 		moving = 0
-
 		return .
 
 	return