(Forgot the new files for builtin_falling)

Sorry, I did a fail :s...

mods/builtin_falling/func.lua

@@ -0,0 +1,201 @@
+
+function spawn_falling_node(p, node, owners)
+	obj = minetest.add_entity(p, "__builtin:falling_node")
+	obj:get_luaentity():set_node(node)
+	obj:get_luaentity():set_owner(owners)
+end
+
+function drop_attached_node(p)
+	local nn = minetest.get_node(p).name
+	minetest.remove_node(p)
+	for _,item in ipairs(minetest.get_node_drops(nn, "")) do
+		local pos = {
+			x = p.x + math.random()/2 - 0.25,
+			y = p.y + math.random()/2 - 0.25,
+			z = p.z + math.random()/2 - 0.25,
+		}
+		minetest.add_item(pos, item)
+	end
+end
+
+function check_attached_node(p, n)
+	local def = minetest.registered_nodes[n.name]
+	local d = {x=0, y=0, z=0}
+	if def.paramtype2 == "wallmounted" then
+		if n.param2 == 0 then
+			d.y = 1
+		elseif n.param2 == 1 then
+			d.y = -1
+		elseif n.param2 == 2 then
+			d.x = 1
+		elseif n.param2 == 3 then
+			d.x = -1
+		elseif n.param2 == 4 then
+			d.z = 1
+		elseif n.param2 == 5 then
+			d.z = -1
+		end
+	else
+		d.y = -1
+	end
+	local p2 = {x=p.x+d.x, y=p.y+d.y, z=p.z+d.z}
+	local nn = minetest.get_node(p2).name
+	local def2 = minetest.registered_nodes[nn]
+	if def2 and not def2.walkable then
+		return false
+	end
+	return true
+end
+
+--
+-- Some common functions
+--
+
+function nodeupdate_single(p, delay)
+	n = minetest.get_node(p)
+	if minetest.get_item_group(n.name, "falling_node") ~= 0 then
+		p_bottom = {x=p.x, y=p.y-1, z=p.z}
+		n_bottom = minetest.get_node(p_bottom)
+		-- Note: walkable is in the node definition, not in item groups
+		if minetest.registered_nodes[n_bottom.name] and
+				(minetest.get_item_group(n.name, "float") == 0 or
+					minetest.registered_nodes[n_bottom.name].liquidtype == "none") and
+				(n.name ~= n_bottom.name or (minetest.registered_nodes[n_bottom.name].leveled and
+					minetest.get_node_level(p_bottom) < minetest.get_node_max_level(p_bottom))) and
+				(not minetest.registered_nodes[n_bottom.name].walkable or
+					minetest.registered_nodes[n_bottom.name].buildable_to) then
+			if delay then
+				minetest.after(0.1, nodeupdate_single, {x=p.x, y=p.y, z=p.z}, false)
+			else
+				n.level = minetest.get_node_level(p)
+				local meta = minetest.get_meta(p)
+				--print('get owner '.. meta:get_string("owner"))
+				spawn_falling_node(p, n, meta:get_string("owner"))
+				minetest.remove_node(p)
+				nodeupdate(p)
+			end
+		end
+	end
+
+	if minetest.get_item_group(n.name, "attached_node") ~= 0 then
+		if not check_attached_node(p, n) then
+			drop_attached_node(p)
+			nodeupdate(p)
+		end
+	end
+end
+
+function nodeupdate(p, delay)
+	-- Round p to prevent falling entities to get stuck
+	p.x = math.floor(p.x+0.5)
+	p.y = math.floor(p.y+0.5)
+	p.z = math.floor(p.z+0.5)
+
+	for x = -1,1 do
+	for y = -1,1 do
+	for z = -1,1 do
+		nodeupdate_single({x=p.x+x, y=p.y+y, z=p.z+z}, delay or not (x==0 and y==0 and z==0))
+	end
+	end
+	end
+end
+
+--
+-- Global callbacks
+--
+
+function on_placenode(p, node)
+	nodeupdate(p)
+end
+minetest.register_on_placenode(on_placenode)
+
+function on_dignode(p, node)
+	nodeupdate(p)
+end
+minetest.register_on_dignode(on_dignode)
+
+--
+-- Rewirte of all item you need
+--
+function add_falling_protect_item(named)
+	minetest.override_item(named, {
+	   on_place = function(itemstack, placer, pointed_thing)
+		  if not pointed_thing.type == "node" then
+			 return itemstack
+		  end
+		  local pn = placer:get_player_name()
+		  if minetest.is_protected(pointed_thing.above, pn) then
+			 return itemstack
+		  end
+		  minetest.env:add_node(pointed_thing.above, {name=itemstack:get_name()})
+		  local meta = minetest.env:get_meta(pointed_thing.above)
+		  meta:set_string("owner", pn)
+		  nodeupdate(pointed_thing.above)
+		  if not minetest.setting_getbool("creative_mode") then
+			 itemstack:take_item()
+		  end
+		  return itemstack
+	   end
+	})
+end
+
+--
+-- Protected Area
+--
+
+function is_protected_area(p, zone, name)
+	for x= -zone, zone do
+		for y= -zone, zone do
+			for z= -zone, zone do
+				local pos = {x=p.x+x,y=p.y+y,z=p.z+z}
+				if minetest.is_protected(pos,name) then
+					return true
+				end
+			end
+		end
+	end
+	return false
+end
+
+--
+-- rewirte of bukket
+--
+
+function add_protected_bukket_liquid(nameofbukket,liquidsourcename)
+	minetest.override_item(nameofbukket, {
+	on_place = function(itemstack, user, pointed_thing)
+			-- Must be pointing to node
+			if pointed_thing.type ~= "node" then
+				return
+			end
+			-- Check if pointing to a buildable node
+			n = minetest.env:get_node(pointed_thing.under)
+			
+			if is_protected_area(pointed_thing.under, 7 ,user:get_player_name()) then
+				minetest.chat_send_player(user:get_player_name(),"You cant place here - Too short of a protected area.")
+				if minetest.is_protected(pointed_thing.under,user:get_player_name()) then
+					minetest.log("action", user:get_player_name().. " try use "..nameofbukket.." at protected pos ".. minetest.pos_to_string(pointed_thing.under))
+				end
+				return itemstack
+			end
+			
+			if minetest.registered_nodes[n.name].buildable_to then
+				-- buildable; replace the node
+				minetest.log("action", user:get_player_name().. " use "..nameofbukket.." at  ".. minetest.pos_to_string(pointed_thing.under))
+				minetest.env:add_node(pointed_thing.under, {name=liquidsourcename})
+			else
+				-- not buildable to; place the liquid above
+				-- check if the node above can be replaced
+				n = minetest.env:get_node(pointed_thing.above)
+				if minetest.registered_nodes[n.name].buildable_to then
+					minetest.log("action", user:get_player_name().. " use "..nameofbukket.."  at  ".. minetest.pos_to_string(pointed_thing.above))
+					minetest.env:add_node(pointed_thing.above, {name=liquidsourcename})
+				else
+					-- do not remove the bucket with the liquid
+					return
+				end
+			end
+			return {name="bucket:bucket_empty"}
+		end
+	})
+end