Initial commit.

README.md

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+## Display Biome [display_biome]
+
+Mod to place a HUD on screen with local temperature, humidity, and biome name.
+
+![Screenshot 1](screenshot.png "Display Biome Screenshot")
+
+Performs simple ground search to try to be more accurate when flying with multi-elevation biomes.
+
+No dependencies and no options.
+
+
+**License of source code:  LGPL-2.1**
+
+This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+
+**License of media (images):  CC-BY-SA-4.0**
+
+This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.

init.lua

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+-- display_biome
+-- Adds HUD display of current mapgen biome information.
+--
+-- by David G (kestral246@gmail.com)
+-- 2019-10-07
+
+display_biome = {}
+
+minetest.register_on_joinplayer(function(player)
+	local pname = player:get_player_name()
+	display_biome[pname] = {
+		last_ippos = {x=0,y=0,z=0},
+		id = player:hud_add({hud_elem_type = "text",
+				position = {x=0.5, y=0.1},
+				text = "-",
+				number = 0xFF0000}),  -- red text
+	}
+end)
+
+minetest.register_on_leaveplayer(function(player)
+	local pname = player:get_player_name()
+	if display_biome[pname] then
+		display_biome[pname] = nil
+	end
+end)
+
+local timer = 0
+
+minetest.register_globalstep(function(dtime)
+	timer = timer + dtime
+	if timer < 0.5 then
+		return
+	end
+
+	timer = 0
+
+	for _, player in ipairs(minetest.get_connected_players()) do
+		local pname = player:get_player_name()
+		local ppos = player:get_pos()
+		local ippos = {x=math.floor(ppos.x),y=math.floor(ppos.y),z=math.floor(ppos.z)}  -- integer position
+		local bpos = {x=ippos.x,y=ippos.y,z=ippos.z}  -- surface position at which to calculate biome
+
+		if not (ippos.x == display_biome[pname].last_ippos.x and ippos.y == display_biome[pname].last_ippos.y and ippos.z == display_biome[pname].last_ippos.z) then  -- position changed
+			-- simple search for ground elevation
+			while bpos.y > 0 and minetest.get_node(bpos).name == "air" do
+				bpos.y = bpos.y - 1
+			end
+
+			if minetest.get_biome_data(bpos) and minetest.get_biome_data(bpos).biome then
+				local bdata = minetest.get_biome_data(bpos)
+
+				player:hud_change(display_biome[pname].id, "text",
+					'temp = '..math.floor(bdata.heat + 0.5)..
+					', humid = '..math.floor(bdata.humidity + 0.5)..
+					', '..minetest.get_biome_name(bdata.biome))
+				display_biome[pname].last_ippos = {x=ippos.x,y=ippos.y,z=ippos.z}  -- update last player position
+			end
+		end
+	end
+end)
+

mod.conf

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+name = display_biome
+description = Display HUD with local temperature, humidity, and biome name.