Ports move force and move resist, movement/pushing/pulling tweaks & co.

code/modules/unit_tests/_unit_tests.dm

@@ -2,6 +2,7 @@
 //Keep this sorted alphabetically
 
 #ifdef UNIT_TESTS
+#include "anchored_mobs.dm"
 #include "reagent_id_typos.dm"
 #include "reagent_recipe_collisions.dm"
 #include "spawn_humans.dm"

code/modules/unit_tests/anchored_mobs.dm

@@ -0,0 +1,9 @@
+/datum/unit_test/anchored_mobs/Run()
+	var/list/L = list()
+	for(var/i in typesof(/mob))
+		var/mob/M = i
+		if(initial(M.anchored))
+			L += "[i]"
+	if(!L.len)
+		return			//passed!
+	Fail("The following mobs are defined as anchored. This is incompatible with the new move force/resist system and needs to be revised.: [L.Join(" ")]")