Merge pull request #3491 from Neerti/6/1/2017_mech_stumping

Makes Mechs Fall

code/modules/multiz/movement.dm

@@ -154,6 +154,28 @@
 /obj/effect/decal/cleanable/can_fall()
 	return TRUE
 
+// These didn't fall anyways but better to nip this now just incase.
+/atom/movable/lighting_overlay/can_fall()
+	return FALSE
+
+// Mechas are anchored, so we need to override.
+/obj/mecha/can_fall()
+	var/obj/structure/lattice/lattice = locate(/obj/structure/lattice, loc)
+	if(lattice)
+		var/area/area = get_area(src)
+		if(area.has_gravity())
+			// Lattices seem a bit too flimsy to hold up a massive exosuit.
+			lattice.visible_message("<span class='danger'>\The [lattice] collapses under the weight of \the [src]!</span>")
+			qdel(lattice)
+
+	// See if something prevents us from falling.
+	var/turf/below = GetBelow(src)
+	for(var/atom/A in below)
+		if(!A.CanPass(src, src.loc))
+			return FALSE
+
+	return TRUE
+
 /obj/item/pipe/can_fall()
 	var/turf/simulated/open/below = loc
 	below = below.below
@@ -196,3 +218,25 @@
 	apply_damage(rand(0, damage), BRUTE, BP_R_ARM)
 	Weaken(4)
 	updatehealth()
+
+/obj/mecha/handle_fall(var/turf/landing)
+	if(..())
+		return
+
+	// Tell the pilot that they just dropped down with a superheavy mecha.
+	if(occupant)
+		to_chat(occupant, "<span class='warning'>\The [src] crashed down onto \the [landing]!</span>")
+
+	// Anything on the same tile as the landing tile is gonna have a bad day.
+	for(var/mob/living/L in landing.contents)
+		L.visible_message("<span class='danger'>\The [src] crushes \the [L] as it lands on them!</span>")
+		L.adjustBruteLoss(rand(70, 100))
+		L.Weaken(8)
+
+	// Now to hurt the mech.
+	take_damage(rand(15, 30))
+
+	// And hurt the floor.
+	if(istype(landing, /turf/simulated/floor))
+		var/turf/simulated/floor/ground = landing
+		ground.break_tile()