update main lua script to add lodestone etc.

mods/ITEMS/mcl_compass/init.lua

@@ -1,3 +1,5 @@
+--TODO: Add advancement
+
 local S = minetest.get_translator(minetest.get_current_modname())
 
 mcl_compass = {}
@@ -9,28 +11,58 @@ local compass_frames = 32
 
 -- Timer for random compass spinning
 local random_timer = 0
-local random_timer_trigger = 0.5 -- random compass spinning tick in seconds. Increase if there are performance problems
+local random_timer_trigger = 0.5 -- random compass spinning tick in seconds. Incr	ease if there are performance problems
 
 local random_frame = math.random(0, compass_frames-1)
 
-function mcl_compass.get_compass_image(pos, dir)
+function mcl_compass.get_compass_image(pos, dir, x, y, z)
 	-- Compasses do not work in certain zones
-	if mcl_worlds.compass_works(pos) then
-		local spawn = {x=0,y=0,z=0}
-		local ssp = minetest.setting_get_pos("static_spawnpoint")
-		if ssp then
-			spawn = ssp
-			if type(spawn) ~= "table" or type(spawn.x) ~= "number" or type(spawn.y) ~= "number" or type(spawn.z) ~= "number" then
-				spawn = {x=0,y=0,z=0}
+	if mcl_worlds.compass_works(pos) and x ~= nil and y ~= nil and z ~= nil then
+		local _, dim = mcl_worlds.y_to_layer(y)
+		local _, playerdim = mcl_worlds.y_to_layer(pos.y)
+		
+		if dim == playerdim then --Check if player and compass target are in the same dimension, above check is just if the diemension is valid for the non lodestone compass	   
+			local spawn = {x=x,y=y,z=z}
+			local ssp = minetest.setting_get_pos("static_spawnpoint")
+			if ssp and x == 0 and y == 0 and z == 0 then
+				spawn = ssp
+				if type(spawn) ~= "table" or type(spawn.x) ~= "number" or type(spawn.y) ~= "number" or type(spawn.z) ~= "number" then
+					spawn = {x=0,y=0,z=0}
+				end
 			end
+			local angle_north = math.deg(math.atan2(spawn.x - pos.x, spawn.z - pos.z))
+			if angle_north < 0 then angle_north = angle_north + 360 end
+			local angle_dir = -math.deg(dir)
+			local angle_relative = (angle_north - angle_dir + 180) % 360
+			return math.floor((angle_relative/11.25) + 0.5) % compass_frames
+		else
+			return random_frame
 		end
-		local angle_north = math.deg(math.atan2(spawn.x - pos.x, spawn.z - pos.z))
-		if angle_north < 0 then angle_north = angle_north + 360 end
-		local angle_dir = -math.deg(dir)
-		local angle_relative = (angle_north - angle_dir + 180) % 360
-		return math.floor((angle_relative/11.25) + 0.5) % compass_frames
 	else
-		return random_frame
+		if x ~= 0 and y ~= 0 and z~= 0 and x ~= nil and y ~= nil and x~= nil then
+			local _, dim = mcl_worlds.y_to_layer(y)
+			local _, playerdim = mcl_worlds.y_to_layer(pos.y)
+			if dim == playerdim then --already explained that very same if statement above
+				local spawn = {x=x,y=y,z=z}
+				local ssp = minetest.setting_get_pos("static_spawnpoint")
+				if ssp and x == 0 and y == 0 and z == 0 then
+					spawn = ssp
+					if type(spawn) ~= "table" or type(spawn.x) ~= "number" or type(spawn.y) ~= "number" or type(spawn.z) ~= "number" then
+						spawn = {x=0,y=0,z=0}
+					end
+				end
+				local angle_north = math.deg(math.atan2(spawn.x - pos.x, spawn.z - pos.z))
+				if angle_north < 0 then angle_north = angle_north + 360 end
+				local angle_dir = -math.deg(dir)
+				local angle_relative = (angle_north - angle_dir + 180) % 360
+				return math.floor((angle_relative/11.25) + 0.5) % compass_frames
+			else
+				return random_frame
+			end
+
+		else
+			return random_frame
+		end
 	end
 end
 
@@ -52,9 +84,39 @@ minetest.register_globalstep(function(dtime)
 		end
 		if has_compass(player) then
 			local pos = player:get_pos()
-			local compass_image = mcl_compass.get_compass_image(pos, player:get_look_horizontal())
 
 			for j,stack in pairs(player:get_inventory():get_list("main")) do
+				x = stack:get_meta():get_string("x") -- i know i could write the pos in meta, but i like this method more, and it is basicly the same, since else there would be one table with 3 values, and i have 3 values on their own
+				y = stack:get_meta():get_string("y")
+				z = stack:get_meta():get_string("z")
+				
+				x = tonumber(x)
+				y = tonumber(y)
+				z = tonumber(z)
+						
+				if x == nil or y == nil or z == nil then --checking if the compass has lodestone meta
+					compass_image = mcl_compass.get_compass_image(pos, player:get_look_horizontal(), 0, 0, 0) --no lodestone meta
+				else
+					checkblock = {x = x, y = y, z = z}
+					local function get_far_node(pos) --function that tries to read node normally, and does it even if its unloaded https://dev.minetest.net/minetest.get_node
+						local node = minetest.get_node(pos)
+						if node.name == "ignore" then
+							minetest.get_voxel_manip():read_from_map(pos, pos) 
+							node = minetest.get_node(pos)
+						end 
+						return node
+					end
+
+					if get_far_node(checkblock).name == "mcl_compass:lodestone" then --check if lodestone still exists
+						compass_image = mcl_compass.get_compass_image(pos, player:get_look_horizontal(), x, y, z)
+						compass_image = compass_image .. "_lodestone"
+					else -- lodestone got destroyed
+						compass_image = random_frame .. "_lodestone"
+					end
+
+					
+				end
+
 				if minetest.get_item_group(stack:get_name(), "compass") ~= 0 and
 						minetest.get_item_group(stack:get_name(), "compass")-1 ~= compass_image then
 					local itemname = "mcl_compass:"..compass_image
@@ -81,8 +143,8 @@ for i,img in ipairs(images) do
 		inv = 0
 	end
 	local use_doc, longdesc, tt
-    --Why is there no usage help? This should be fixed.
-    --local usagehelp
+	--Why is there no usage help? This should be fixed.
+	--local usagehelp
 	use_doc = i == stereotype_frame
 	if use_doc then
 		tt = S("Points to the world origin")
@@ -101,6 +163,18 @@ for i,img in ipairs(images) do
 		groups = {not_in_creative_inventory=inv, compass=i, tool=1, disable_repair=1 }
 	})
 	
+	minetest.register_craftitem(itemstring .. "_lodestone", {
+		description = S("Lodestone Compass"),
+		_tt_help = tt,
+		_doc_items_create_entry = use_doc,
+		_doc_items_longdesc = longdesc,
+		--_doc_items_usagehelp = usagehelp,
+		inventory_image = img .. "^[colorize:purple:50",
+		wield_image = img .. "^[colorize:purple:50",
+		stack_max = 64,
+		groups = {not_in_creative_inventory=1, compass=i, tool=1, disable_repair=1 }
+	})
+
 	-- Help aliases. Makes sure the lookup tool works correctly
 	if not use_doc and doc_mod then
 		doc.add_entry_alias("craftitems", "mcl_compass:"..(stereotype_frame-1), "craftitems", itemstring)
@@ -116,9 +190,42 @@ minetest.register_craft({
 	}
 })
 
+minetest.register_craft({
+	output = "mcl_compass:lodestone",
+	recipe = {
+		{"mcl_core:stonebrickcarved","mcl_core:stonebrickcarved","mcl_core:stonebrickcarved"},
+		{"mcl_core:stonebrickcarved", "mcl_nether:netherite_ingot", "mcl_core:stonebrickcarved"},
+		{"mcl_core:stonebrickcarved", "mcl_core:stonebrickcarved", "mcl_core:stonebrickcarved"}
+	}
+})
+
 minetest.register_alias("mcl_compass:compass", "mcl_compass:"..stereotype_frame)
 
 -- Export stereotype item for other mods to use
 mcl_compass.stereotype = "mcl_compass:"..tostring(stereotype_frame)
 
 
+minetest.register_node("mcl_compass:lodestone",{
+	description="Lodestone",
+	on_rightclick = function(pos, node, player, itemstack)
+		if itemstack.get_name(itemstack).match(itemstack.get_name(itemstack),"mcl_compass:") then
+			if itemstack.get_name(itemstack) ~= "mcl_compass:lodestone" then
+				itemstack:get_meta():set_string("x", pos.x)
+				itemstack:get_meta():set_string("y", pos.y)
+				itemstack:get_meta():set_string("z", pos.z)
+			end
+		end
+	end,
+	tiles = {
+		"lodestone_top.png",
+		"lodestone_bottom.png",
+		"lodestone_side1.png",
+		"lodestone_side2.png",
+		"lodestone_side3.png",
+		"lodestone_side4.png"
+	},
+	groups = {pickaxey=1, material_stone=1},
+	_mcl_hardness = 1.5,
+	_mcl_blast_resistance = 6,
+	sounds = mcl_sounds.node_sound_stone_defaults()
+})