init

depends.txt

@@ -0,0 +1 @@
+default

init.lua

@@ -0,0 +1,103 @@
+--Basic protect by rnd, 2016
+local protector = {};
+protector.radius = 20; -- 20x20x20 area
+
+protector.cache = {};
+
+local old_is_protected = minetest.is_protected
+function minetest.is_protected(pos, digger)
+	local r = protector.radius;
+	local p = {x=math.floor((pos.x)/r)*r,y=math.floor((pos.y)/r)*r,z=math.floor((pos.z)/r)*r}
+	
+	if not protector.cache[digger] then -- cache current check for faster future lookups
+		protector.cache[digger] = p;
+	else
+		local p0 = protector.cache[digger];
+		if (p0.x==p.x and p0.y==p.y and p0.z==p.z) then -- already checked, just lookup
+			return protector.cache[digger].is_protected 
+		else 
+			protector.cache[digger] = p; -- refresh cache
+		end
+	end
+	
+	if minetest.get_node(p).name == "basic_protect:protector" then 
+		local meta = minetest.get_meta(p);
+		local owner = meta:get_string("owner");
+		if digger~=owner then 
+			minetest.chat_send_player(digger, "area owned by " .. owner);
+			protector.cache[digger].is_protected = true;
+			return true 
+		end
+	end
+	protector.cache[digger].is_protected = old_is_protected(pos, digger);
+	return  protector.cache[digger].is_protected;
+end
+
+
+minetest.register_node("basic_protect:protector", {
+	description = "Protects a rectangle area of size " .. protector.radius,
+	tiles = {"basic_protector.png"},
+	groups = {oddly_breakable_by_hand=2},
+	sounds = default.node_sound_wood_defaults(),
+	on_place = function(itemstack, placer, pointed_thing)
+	--after_place_node = function(pos, placer)
+		local pos = pointed_thing.under;
+		local name = placer:get_player_name();
+		local r = protector.radius;
+		local p = {x=math.floor((pos.x)/r)*r,y=math.floor((pos.y)/r)*r,z=math.floor((pos.z)/r)*r}
+		if minetest.get_node(p).name == "basic_protect:protector" then
+			minetest.chat_send_player(name,"area already protected at " .. minetest.pos_to_string(p));
+			return nil
+		end
+		minetest.set_node(p, {name = "basic_protect:protector"});
+		local meta = minetest.get_meta(p);meta:set_string("owner",name);
+		minetest.chat_send_player(name, "#protector: protected new area (" .. p.x .. "," .. p.y .. "," .. p.z .. ") + " .. protector.radius-1 .. " nodes");
+		meta:set_string("infotext", "property of " .. name);
+		protector.cache = {}; -- reset cache
+		itemstack:take_item(); return itemstack
+	end,
+	on_punch = function(pos, node, puncher, pointed_thing) 
+		local meta = minetest.get_meta(pos);local owner = meta:get_string("owner");
+		if owner == puncher:get_player_name() then
+			minetest.add_entity({x=pos.x+protector.radius/2,y=pos.y+protector.radius/2,z=pos.z+protector.radius/2}, "basic_protect:display")
+		end
+	end
+});
+
+
+minetest.register_entity("basic_protect:display", {
+	physical = false,
+	collisionbox = {0, 0, 0, 0, 0, 0},
+	visual = "wielditem",
+	-- wielditem seems to be scaled to 1.5 times original node size
+	visual_size = {x = 1.29*protector.radius/20, y = 1.29*protector.radius/20},
+	textures = {"protector:display_node"},
+	timer = 0,
+
+	on_activate = function(self, staticdata)
+		self.timer = 0;
+		-- Xanadu server only
+		if mobs and mobs.entity and mobs.entity == false then
+			self.object:remove()
+		end
+	end,
+
+	on_step = function(self, dtime)
+
+		self.timer = self.timer + dtime
+
+		if self.timer > 20 then
+			self.object:remove()
+		end
+	end,
+})
+
+
+minetest.register_craft({
+	output = "basic_protect:protector",
+	recipe = {
+		{"default:stone", "default:stone","default:stone"},
+		{"default:stone", "default:steel_ingot","default:stone"},
+		{"default:stone", "default:stone", "default:stone"}
+	}
+})