write something there

mods/minetest_game/map/init.lua

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+-- map/init.lua
+
+-- Mod global namespace
+
+map = {}
+
+
+-- Load support for MT game translation.
+local S = minetest.get_translator("map")
+
+
+-- Update HUD flags
+-- Global to allow overriding
+
+function map.update_hud_flags(player)
+	local creative_enabled = minetest.is_creative_enabled(player:get_player_name())
+
+	local minimap_enabled = creative_enabled or
+		player:get_inventory():contains_item("main", "map:mapping_kit")
+	local radar_enabled = creative_enabled
+
+	player:hud_set_flags({
+		minimap = minimap_enabled,
+		minimap_radar = radar_enabled
+	})
+end
+
+
+-- Set HUD flags 'on joinplayer'
+
+minetest.register_on_joinplayer(function(player)
+	map.update_hud_flags(player)
+end)
+
+
+-- Cyclic update of HUD flags
+
+local function cyclic_update()
+	for _, player in ipairs(minetest.get_connected_players()) do
+		map.update_hud_flags(player)
+	end
+	minetest.after(5.3, cyclic_update)
+end
+
+minetest.after(5.3, cyclic_update)
+
+
+-- Mapping kit item
+
+minetest.register_craftitem("map:mapping_kit", {
+	description = S("Mapping Kit") .. "\n" .. S("Use with 'Minimap' key"),
+	inventory_image = "map_mapping_kit.png",
+	stack_max = 1,
+	groups = {flammable = 3, tool = 1},
+
+	on_use = function(itemstack, user, pointed_thing)
+		map.update_hud_flags(user)
+	end,
+})
+
+
+-- Crafting
+
+minetest.register_craft({
+	output = "map:mapping_kit",
+	recipe = {
+		{"default:glass", "default:paper", "group:stick"},
+		{"default:steel_ingot", "default:paper", "default:steel_ingot"},
+		{"group:wood", "default:paper", "dye:black"},
+	}
+})
+
+
+-- Fuel
+
+minetest.register_craft({
+	type = "fuel",
+	recipe = "map:mapping_kit",
+	burntime = 5,
+})