Merge pull request #13871 from silicons/debris

Merry Christmas - GIVING JANITORS A JOB

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

@@ -15,6 +15,7 @@
 
 	block_parry_data = /datum/block_parry_data/unarmed/human
 	default_block_parry_data = /datum/block_parry_data/unarmed/human
+	causes_dirt_buildup_on_floor = TRUE
 
 	//Hair colour and style
 	var/hair_color = "000"

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

@@ -100,3 +100,8 @@
 	if(dna.species.space_move(src))
 		return TRUE
 	return ..()
+
+/mob/living/carbon/human/dirt_buildup(strength)
+	if(!shoes || !(shoes.body_parts_covered & FEET))
+		return	// barefoot advantage
+	return ..()