First time trying to create project on github

depends.txt

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+default

init.lua

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+teleports = {}
+
+minetest.register_node("teleports:teleport", {
+	description = "Teleport",
+	drawtype = "glasslike",
+	tiles = {"teleports_teleport_top.png"},
+	is_ground_content = false,
+	light_source = LIGHT_MAX,
+	groups = {cracky=1, level=3},
+	drop = 'default:diamond',
+	sounds = default.node_sound_stone_defaults(),
+})
+--redefine diamond
+minetest.register_node(":default:diamondblock", {
+	description = "Diamond Block",
+	tiles = {"default_diamond_block.png"},
+	is_ground_content = true,
+	groups = {cracky=1,level=3},
+	sounds = default.node_sound_stone_defaults(),
+	on_place = function(itemstack, placer, pointed_thing)
+		local stack = ItemStack("default:diamondblock")
+		local pos = pointed_thing.above
+		if
+			minetest.get_node({x=pos.x+1,y=pos.y,z=pos.z}).name=="default:diamondblock" and
+			minetest.get_node({x=pos.x+1,y=pos.y,z=pos.z+1}).name=="default:diamondblock" and
+			minetest.get_node({x=pos.x+1,y=pos.y,z=pos.z-1}).name=="default:diamondblock" and
+			minetest.get_node({x=pos.x-1,y=pos.y,z=pos.z}).name=="default:diamondblock" and
+			minetest.get_node({x=pos.x-1,y=pos.y,z=pos.z+1}).name=="default:diamondblock" and
+			minetest.get_node({x=pos.x-1,y=pos.y,z=pos.z-1}).name=="default:diamondblock" and
+			minetest.get_node({x=pos.x,y=pos.y,z=pos.z+1}).name=="default:diamondblock" and
+			minetest.get_node({x=pos.x,y=pos.y,z=pos.z-1}).name=="default:diamondblock"
+		then
+			stack = ItemStack("teleports:teleport")
+		end
+		local ret = minetest.item_place(stack, placer, pointed_thing)
+		if ret==nil then
+			return itemstack
+		else
+			return ItemStack("default:diamondblock "..itemstack:get_count()-(1-ret:get_count()))
+		end
+	end,
+})
+
+minetest.register_abm({
+	nodenames = {"teleports:teleport"},
+	interval = 10,
+	chance = 1,
+	action = function(pos)
+		local objectsnear=minetest.get_objects_inside_radius({x=pos.x,y=pos.y+0.5,z=pos.z}, 0.52)
+		local r=80
+		if #objectsnear>0 then
+			local player = objectsnear[1]
+			if player:is_player() then
+				local power = minetest.find_nodes_in_area(
+					{x=pos.x-1, y=pos.y, z=pos.z-1},
+					{x=pos.x+1, y=pos.y, z=pos.z+1},
+					{"default:diamondblock"})
+				r=r+#power*20	--diamond blocks around teleport increase its range
+				local positions = minetest.find_nodes_in_area(
+					{x=pos.x-r, y=pos.y-r, z=pos.z-r},
+					{x=pos.x+r, y=pos.y+r, z=pos.z+r},
+					{"teleports:teleport"})
+				while #positions>1 do
+					local key = math.random(1, #positions)
+					local pos2 = positions[key]	--choose teleport randomly
+					if  (pos.x == pos2.x and pos.y == pos2.y and pos.z == pos2.z) or	-- any better way to compare?
+						minetest.get_node({x=pos2.x,y=pos2.y+1,z=pos2.z}).name~="air" or
+						minetest.get_node({x=pos2.x,y=pos2.y+2,z=pos2.z}).name~="air"
+					then
+						table.remove(positions, key)
+					else
+						minetest.after(0.2, function()
+							if player ~= nil and player:is_player() then --still is player, just in case
+								player:setpos({x=pos2.x,y=pos2.y+0.5,z=pos2.z})
+								minetest.log("info", "Player teleported from "..pos.x..","..pos.y..","..pos.z.." to "..pos2.x..","..pos2.y..","..pos2.z)
+							end
+						end)
+						break
+					end
+				end
+			end
+		end
+	end,
+})
+