Merge pull request #10264 from RavingManiac/dev-freeze

Refactors floating and magboot checks. Fixes #10256

code/game/area/areas.dm

@@ -227,7 +227,7 @@ var/list/mob/living/forced_ambiance_list = new
 	var/area/oldarea = L.lastarea
 	if((oldarea.has_gravity == 0) && (newarea.has_gravity == 1) && (L.m_intent == "run")) // Being ready when you change areas gives you a chance to avoid falling all together.
 		thunk(L)
-		L.make_floating(0)
+		L.update_floating( L.Check_Dense_Object() )
 
 	L.lastarea = newarea
 	play_ambience(L)
@@ -260,21 +260,10 @@ var/list/mob/living/forced_ambiance_list = new
 /area/proc/gravitychange(var/gravitystate = 0, var/area/A)
 	A.has_gravity = gravitystate
 
-	if(gravitystate)
-		for(var/mob/living/carbon/human/M in A)
-			thunk(M)
-		for(var/mob/M1 in A)
-			M1.make_floating(0)
-	else
 	for(var/mob/M in A)
-			if(M.Check_Dense_Object() && istype(src,/mob/living/carbon/human/))
-				var/mob/living/carbon/human/H = src
-				if(istype(H.shoes, /obj/item/clothing/shoes/magboots) && (H.shoes.flags & NOSLIP))  //magboots + dense_object = no floaty effect
-					H.make_floating(0)
-				else
-					H.make_floating(1)
-			else
-				M.make_floating(1)
+		if(has_gravity)
+			thunk(M)
+		M.update_floating( M.Check_Dense_Object() )
 
 /area/proc/thunk(mob)
 	if(istype(get_turf(mob), /turf/space)) // Can't fall onto nothing.

code/modules/mob/animations.dm

@@ -77,10 +77,36 @@ note dizziness decrements automatically in the mob's Life() proc.
 	pixel_y = old_y
 
 
-//handles up-down floaty effect in space
+//handles up-down floaty effect in space and zero-gravity
 /mob/var/is_floating = 0
 /mob/var/floatiness = 0
 
+/mob/proc/update_floating(var/dense_object=0)
+
+	if(anchored||buckled)
+		make_floating(0)
+		return
+
+	var/turf/turf = get_turf(src)
+	if(!istype(turf,/turf/space))
+		var/area/A = turf.loc
+		if(istype(A) && A.has_gravity)
+			make_floating(0)
+			return
+		else if (Check_Shoegrip())
+			make_floating(0)
+			return
+		else
+			make_floating(1)
+			return
+
+	if(dense_object && Check_Shoegrip())
+		make_floating(0)
+		return
+
+	make_floating(1)
+	return
+
 /mob/proc/make_floating(var/n)
 
 	floatiness = n

code/modules/mob/living/carbon/human/human.dm

@@ -1361,3 +1361,8 @@
 	..()
 	if(update_hud)
 		handle_regular_hud_updates()
+
+/mob/living/carbon/human/Check_Shoegrip()
+	if(istype(shoes, /obj/item/clothing/shoes/magboots) && (shoes.flags & NOSLIP))  //magboots + dense_object = no floating
+		return 1
+	return 0

code/modules/mob/mob_movement.dm

@@ -449,17 +449,10 @@
 /mob/proc/Process_Spacemove(var/check_drift = 0)
 
 	if(!Check_Dense_Object()) //Nothing to push off of so end here
-		make_floating(1)
+		update_floating(0)
 		return 0
 
-	if(istype(src,/mob/living/carbon/human/))
-		var/mob/living/carbon/human/H = src
-		if(istype(H.shoes, /obj/item/clothing/shoes/magboots) && (H.shoes.flags & NOSLIP))  //magboots + dense_object = no floaty effect
-			make_floating(0)
-		else
-			make_floating(1)
-	else
-		make_floating(1)
+	update_floating(1)
 
 	if(restrained()) //Check to see if we can do things
 		return 0
@@ -477,6 +470,8 @@
 /mob/proc/Check_Dense_Object() //checks for anything to push off in the vicinity. also handles magboots on gravity-less floors tiles
 
 	var/dense_object = 0
+	var/shoegrip
+
 	for(var/turf/turf in oview(1,src))
 		if(istype(turf,/turf/space))
 			continue
@@ -484,14 +479,9 @@
 		if(istype(turf,/turf/simulated/floor)) // Floors don't count if they don't have gravity
 			var/area/A = turf.loc
 			if(istype(A) && A.has_gravity == 0)
-				var/can_walk = 0
-
-				if(ishuman(src))  // Only humans can wear magboots, so we give them a chance to.
-					var/mob/living/carbon/human/H = src
-					if(istype(H.shoes, /obj/item/clothing/shoes/magboots) && (H.shoes.flags & NOSLIP))
-						can_walk = 1
-
-				if(!can_walk)
+				if(shoegrip == null)
+					shoegrip = Check_Shoegrip() //Shoegrip is only ever checked when a zero-gravity floor is encountered to reduce load
+				if(!shoegrip)
 					continue
 
 		dense_object++
@@ -511,6 +501,8 @@
 
 	return dense_object
 
+/mob/proc/Check_Shoegrip()
+	return 0
 
 /mob/proc/Process_Spaceslipping(var/prob_slip = 5)
 	//Setup slipage