diff --git a/mods/mobs/api.lua b/mods/mobs/api.lua
index d967ef49..b61c4979 100755
--- a/mods/mobs/api.lua
+++ b/mods/mobs/api.lua
@@ -669,7 +669,7 @@ function mobs:register_mob(name, def)
 					end
 					if self.timer > 3 then
 						local pos = vector.round(self.object:getpos())
-						entity_physics(pos, 3) -- hurt player/mobs caught in blast area
+						entity_physics(pos, 3, self) -- hurt player/mobs caught in blast area
 						if minetest.find_node_near(pos, 1, {"group:water"})
 						or minetest.is_protected(pos, "") then
 							self.object:remove()
@@ -1106,8 +1106,8 @@ function mobs:explosion(pos, radius, fire, smoke, sound)
 			local n = minetest.get_node(p).name
 			-- do NOT destroy protection nodes but DO destroy nodes in protected area
 			if not n:find("protector:")
-			--and not minetest.is_protected(p, "")
-			and minetest.get_item_group(n.name, "unbreakable") ~= 1 then
+			and not minetest.is_protected(p, "")
+			and minetest.get_item_group(n, "unbreakable") ~= 1 then
 				-- if chest then drop items inside
 				if n == "default:chest" then
 					local meta = minetest.get_meta(p)
@@ -1180,19 +1180,20 @@ function calc_velocity(pos1, pos2, old_vel, power)
 end
 
 -- modified from TNT mod
-function entity_physics(pos, radius)
+function entity_physics(pos, radius, self)
 	radius = radius * 2
 	local objs = minetest.get_objects_inside_radius(pos, radius)
 	local obj_pos, obj_vel, dist
 	for _, obj in pairs(objs) do
 		obj_pos = obj:getpos()
 		obj_vel = obj:getvelocity()
-		dist = math.max(1, vector.distance(pos, obj_pos))
+		--dist = math.max(1, vector.distance(pos, obj_pos))
 		if obj_vel ~= nil then
 			obj:setvelocity(calc_velocity(pos, obj_pos, obj_vel, radius * 10))
 		end
-		local damage = (4 / dist) * radius
-		obj:set_hp(obj:get_hp() - damage)
+		--local damage = (4 / dist) * radius
+		obj:punch(self.object, 1.0,{full_punch_interval=1.0, damage_groups = {fleshy=self.damage} })
+		--obj:set_hp(obj:get_hp() - damage)
 	end
 end