better movement

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

@@ -101,3 +101,8 @@
 	if(dna.species.space_move(src))
 		return TRUE
 	return ..()
+
+/mob/living/carbon/human/CanPass(atom/movable/mover, turf/target)
+	if(human_owner.dna.species.species_pass_check())
+		return TRUE
+	return ..()

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

@@ -1930,6 +1930,10 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 /datum/species/proc/should_render(mob/living/carbon/human/H)
 	return TRUE
 
+//a check for if you want to forcibly make CanPass return TRUE for the mob with this species
+/datum/species/proc/species_pass_check()
+	return FALSE
+
 /////////////
 //BREATHING//
 /////////////

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

@@ -71,6 +71,12 @@
 	else
 		return ..()
 
+/datum/species/jelly/species_pass_check()
+	if(slime_puddle && slime_puddle.is_puddle)
+		return TRUE
+	else
+		return ..()
+
 /datum/species/jelly/spec_life(mob/living/carbon/human/H)
 	if(H.stat == DEAD || HAS_TRAIT(H, TRAIT_NOMARROW)) //can't farm slime jelly from a dead slime/jelly person indefinitely, and no regeneration for blooduskers
 		return
@@ -701,9 +707,9 @@
 				ADD_TRAIT(H, TRAIT_MOBILITY_NOREST, SLIMEPUDDLE_TRAIT)
 				H.add_movespeed_modifier(/datum/movespeed_modifier/slime_puddle)
 				H.update_disabled_bodyparts(silent = TRUE)
+				H.layer -= 1 //go one layer down so people go over you
 				squeak = H.AddComponent(/datum/component/squeak, custom_sounds = list('sound/effects/blobattack.ogg'))
 				sleep(in_transformation_duration)
-				H.pass_flags &= PASSMOB
 				var/mutable_appearance/puddle_overlay = mutable_appearance(icon = puddle_icon, icon_state = puddle_state)
 				puddle_overlay.color = mutcolor
 				tracked_overlay = puddle_overlay
@@ -716,7 +722,6 @@
 			puddle_effect.color = mutcolor
 			H.Stun(out_transformation_duration, ignore_canstun = TRUE)
 			sleep(out_transformation_duration)
-			H.pass_flags ^= PASSMOB
 			REMOVE_TRAIT(H, TRAIT_PARALYSIS_L_ARM, SLIMEPUDDLE_TRAIT)
 			REMOVE_TRAIT(H, TRAIT_PARALYSIS_R_ARM, SLIMEPUDDLE_TRAIT)
 			REMOVE_TRAIT(H, TRAIT_MOBILITY_NOPICKUP, SLIMEPUDDLE_TRAIT)
@@ -727,6 +732,7 @@
 			REMOVE_TRAIT(H, TRAIT_MOBILITY_NOREST, SLIMEPUDDLE_TRAIT)
 			H.update_disabled_bodyparts(silent = TRUE)
 			H.remove_movespeed_modifier(/datum/movespeed_modifier/slime_puddle)
+			H.layer += 1 //go one layer back above!
 			is_puddle = FALSE
 			if(squeak)
 				squeak.RemoveComponent()