minetest_orienteering/init.lua

-- Displays height (Y)
minetest.register_tool("orienteering:altimeter", {
	description = "Altimeter",
	wield_image = "orienteering_altimeter.png",
	inventory_image = "orienteering_altimeter.png",
})

-- Displays X and Z coordinates
minetest.register_tool("orienteering:triangulator", {
	description = "Triangulator",
	wield_image = "orienteering_triangulator.png",
	inventory_image = "orienteering_triangulator.png",
})

-- Displays player yaw and can calculate yaw difference between 2 points
minetest.register_tool("orienteering:compass", {
	description = "Compass",
	wield_image = "orienteering_compass_wield.png",
	inventory_image = "orienteering_compass_inv.png",
})

-- Displays player pitch and can calculate pitch difference between 2 points
minetest.register_tool("orienteering:sextant", {
	description = "Sextant",
	wield_image = "orienteering_sextant_wield.png",
	inventory_image = "orienteering_sextant_inv.png",
})

-- Displays game time
minetest.register_tool("orienteering:watch", {
	description = "Watch",
	wield_image = "orienteering_watch.png",
	inventory_image = "orienteering_watch.png",
})

-- Displays speed
minetest.register_tool("orienteering:speedometer", {
	description = "Speedometer",
	wield_image = "orienteering_speedometer_wield.png",
	inventory_image = "orienteering_speedometer_inv.png",
})

-- Enables minimap
minetest.register_tool("orienteering:automapper", {
	description = "Automapper",
	wield_image = "orienteering_automapper_wield.png",
	inventory_image = "orienteering_automapper_inv.png",
})

-- Displays X,Y,Z coordinates, height, speed, yaw and game time
minetest.register_tool("orienteering:gps", {
	description = "GPS device",
	wield_image = "orienteering_gps_wield.png",
	inventory_image = "orienteering_gps_inv.png",
})



function update_automapper(player)
	local inv = player:get_inventory()
	if inv:contains_item("main", "orienteering:automapper") then
		player:hud_set_flags({minimap = true})
	else
		player:hud_set_flags({minimap = false})
	end
end

minetest.register_on_newplayer(function(player)
	update_automapper(player)
end)

minetest.register_on_joinplayer(function(player)
	update_automapper(player)
end)

local updatetimer = 0
minetest.register_globalstep(function(dtime)
	updatetimer = updatetimer + dtime
	if updatetimer > 0.1 then
		local players = minetest.get_connected_players()
		for i=1, #players do
			update_automapper(players[i])
		end
		updatetimer = updatetimer - dtime
	end
end)