Fix overheating in protected areas

Merge pull request GH#11 from Lejo1/protect_drop

Destroy modules with `remove_node` instead of `dig_node` that doesn’t work in protected areas.

diode.lua

@@ -18,7 +18,7 @@ end
 local function diode_action(pos, node, channel, msg)
 	if digiline_routing.overheat.heat(pos) > OVERLOAD_THRESHOLD then
 		digiline_routing.overheat.forget(pos)
-		minetest.dig_node(pos)
+		minetest.remove_node(pos)
 		minetest.add_item(pos, node.name)
 		return
 	end

filter.lua

@@ -46,9 +46,10 @@ local function filter_cleanup(pos, node)
 	digiline_routing.multiblock.dig2(pos, node)
 end
 
-local function filter_test(master, channel)
+local function filter_test(master, channel, node)
 	if digiline_routing.overheat.heat(master) > OVERLOAD_THRESHOLD then
-		minetest.dig_node(master)
+		minetest.remove_node(master)
+		filter_cleanup(master, node)
 		minetest.add_item(master, "digiline_routing:filter")
 		return false
 	end
@@ -56,7 +57,7 @@ local function filter_test(master, channel)
 end
 
 local function filter_in_action(pos, node, channel, msg)
-	if filter_test(pos, channel) then
+	if filter_test(pos, channel, node) then
 		local off = minetest.facedir_to_dir(node.param2)
 		local slave = vector.add(pos, off)
 		digiline:receptor_send(slave, filter_rules_out(node), channel, msg)
@@ -66,7 +67,7 @@ end
 local function filter_out_action(pos, node, channel, msg)
 	local off = minetest.facedir_to_dir(node.param2)
 	local master = vector.subtract(pos, off)
-	if filter_test(master, channel) then
+	if filter_test(master, channel, node) then
 		digiline:receptor_send(master, filter_rules_in(node), channel, msg)
 	end
 end
@@ -115,6 +116,7 @@ minetest.register_node("digiline_routing:filter", {
 		},
 	},
 })
+mesecon.register_mvps_stopper("digiline_routing:filter")
 
 minetest.register_node("digiline_routing:filter_b", {
 	description = "<<INTERNAL>> Digiline Filter (Part B)",
@@ -144,3 +146,4 @@ minetest.register_node("digiline_routing:filter_b", {
 		},
 	},
 })
+mesecon.register_mvps_stopper("digiline_routing:filter_b")

multiblock.lua

@@ -5,11 +5,14 @@ digiline_routing.multiblock = {}
 
 digiline_routing.multiblock.build2 = function(node1, node2, itemstack, placer, pointed_thing)
 	local under = pointed_thing.under
+	local above = pointed_thing.above
 	local pos
 	if minetest.registered_items[minetest.get_node(under).name].buildable_to then
 		pos = under
+	elseif minetest.registered_items[minetest.get_node(above).name].buildable_to then
+		pos = above
 	else
-		pos = pointed_thing.above
+		return itemstack, false
 	end
 
 	if digiline_routing.is_protected(pos, placer) then

splitter.lua

@@ -27,7 +27,8 @@ end
 
 local function splitter_in_action(pos, node, channel, msg)
 	if digiline_routing.overheat.heat(pos) > OVERLOAD_THRESHOLD then
-		minetest.dig_node(pos)
+		minetest.remove_node(pos)
+		splitter_cleanup(pos, node)
 		minetest.add_item(pos, "digiline_routing:splitter")
 		return
 	end
@@ -40,7 +41,8 @@ local function splitter_out_action(pos, node, channel, msg)
 	local off = minetest.facedir_to_dir(node.param2)
 	local master = vector.subtract(pos, off)
 	if digiline_routing.overheat.heat(master) > OVERLOAD_THRESHOLD then
-		minetest.dig_node(master)
+		minetest.remove_node(master)
+		splitter_cleanup(master, node)
 		minetest.add_item(master, "digiline_routing:splitter")
 		return
 	end
@@ -84,6 +86,7 @@ minetest.register_node("digiline_routing:splitter", {
 		},
 	},
 })
+mesecon.register_mvps_stopper("digiline_routing:splitter")
 
 minetest.register_node("digiline_routing:splitter_b", {
 	description = "<<INTERNAL>> Digiline Splitter (Part B)",
@@ -113,3 +116,4 @@ minetest.register_node("digiline_routing:splitter_b", {
 		},
 	},
 })
+mesecon.register_mvps_stopper("digiline_routing:splitter_b")