Initial commit

README.md

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+# Environment
+
+Adds environmental sounds to Minetest
+
+Created by rubenwardy.
+
+License: LGPL 2.1 or later.

depends.txt

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+default

init.lua

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+--[[
+
+# Usecases
+
+* Waterfalls, flowing going down 2+ levels
+* Standing water
+* Oceans
+
+]]
+
+environment = {
+	_nodes = {}
+}
+
+function environment.register_node(name)
+	local def = minetest.registered_nodes[name]
+	if not def then
+		error("environment.register_node(\"" .. name .. "\") : no such node!")
+	elseif not def.sounds then
+		error("environment.register_node(\"" .. name .. "\") : no sound table!")
+	end
+	def.sounds.name = name
+	environment._nodes[minetest.get_content_id(name)] = def.sounds
+
+	print("Environment : added " .. name .. " to watch list")
+end
+
+function environment.register_node_with_sounds(name, spec)
+	-- Get definition
+	local def = minetest.registered_nodes[name]
+	if not def then
+		error("environment.register_node_with_sounds(" .. name .. ", {}) : no such node!")
+	end
+
+	-- Add sounds
+	if def.sounds then
+		for key, value in pairs(def.sounds) do
+			if not spec[key] then
+				spec[key] = value
+			end
+		end
+	end
+	minetest.override_item(name, {
+		sounds = spec
+	})
+
+	-- Register it
+	return environment.register_node(name)
+end
+
+minetest.register_node("environment:test",{
+	tiles = {"default_stone.png"},
+	sounds = {
+		presence = {name="small_waterfall"}
+	}
+})
+environment.register_node("environment:test")
+
+--[[environment.register_node_with_sounds("default:water_source", {
+	presence = {name="small_waterfall"}
+})]]
+
+local SCAN_RANGE = 32
+local MAX_SOURCES = 16
+function environment.scan_around_player(name)
+	-- Small Optimisations
+	local watch_nodes = environment._nodes
+
+	-- Get player
+	local player = minetest.get_player_by_name(name)
+	print("Starting scan...")
+
+	-- Get range
+	local pos = player:getpos()
+	pos = vector.round(pos)
+	local px, py, pz = pos.x, pos.y, pos.z
+	local minp = {
+		x = pos.x - SCAN_RANGE,
+		y = pos.y - SCAN_RANGE,
+		z = pos.z - SCAN_RANGE
+	}
+	local maxp = {
+		x = pos.x + SCAN_RANGE,
+		y = pos.y + SCAN_RANGE,
+		z = pos.z + SCAN_RANGE
+	}
+
+	-- Set up voxel manip
+	local vm = minetest.get_voxel_manip()
+	minp, maxp = vm:read_from_map(minp, maxp)
+	local a = VoxelArea:new{
+			MinEdge = minp,
+			MaxEdge = maxp
+	}
+	local data = vm:get_data()
+
+	-- Loop through
+	local count = 0
+	local radius = 1
+	local c2 = 0
+
+	(function()
+		local function handle_source(def, x, y, z)
+			print("Adding source to (" .. x .. ", " .. y .. ", " .. z .. ")")
+			minetest.sound_play(def.presence, {
+				pos = {x=x, y=y, z=z},
+				gain = def.presence.gain,
+				max_hear_distance = SCAN_RANGE
+			})
+		end
+
+		-- Check center
+		--[[local vi = a:index(px, py, pz)
+		local def = watch_nodes[data[vi] ]
+		if def then
+			handle_source(def, px, py, pz)
+			count = count + 1
+		end
+		c2 = c2 + 1]]
+
+		print("Scanning from " .. minetest.pos_to_string(pos) ..  " with range " .. SCAN_RANGE)
+
+		while radius < SCAN_RANGE do
+			print(" - radius " .. radius)
+
+			-- Front and back faces
+			for x = -radius, radius do
+				for y = -radius, radius do
+					local vi = a:index(px + x, py + y, pz + radius)
+					local def = watch_nodes[data[vi]]
+					if def then
+						handle_source(def, px + x, py + y, pz + radius)
+						count = count + 1
+						if count >= MAX_SOURCES then
+							c2 = c2 + 1
+							return
+						end
+					end
+
+					local vi = a:index(px + x, py + y, pz - radius)
+					local def = watch_nodes[data[vi]]
+					if def then
+						handle_source(def, px + x, py + y, pz - radius)
+						count = count + 1
+						if count >= MAX_SOURCES then
+							c2 = c2 + 2
+							return
+						end
+					end
+					c2 = c2 + 1
+				end
+			end
+
+			-- Left and right
+			for z = -radius, radius do
+				for y = -radius, radius do
+					local vi = a:index(px + radius, py + y, pz + z)
+					local def = watch_nodes[data[vi]]
+					if def then
+						handle_source(def, px + radius, py + y, pz + z)
+						count = count + 1
+						if count >= MAX_SOURCES then
+							c2 = c2 + 1
+							return
+						end
+					end
+
+					local vi = a:index(px - radius, py + y, pz + z)
+					local def = watch_nodes[data[vi]]
+					if def then
+						handle_source(def, px - radius, py + y, pz + z)
+						count = count + 1
+						if count >= MAX_SOURCES then
+							c2 = c2 + 2
+							return
+						end
+					end
+
+					c2 = c2 + 2
+				end
+			end
+
+			-- Top and bottom
+			for x = -radius, radius do
+				for z = -radius, radius do
+					local vi = a:index(px + x, py + radius, pz + z)
+					local def = watch_nodes[data[vi]]
+					if def then
+						handle_source(def, px + x, py + radius, pz + z)
+						count = count + 1
+						if count >= MAX_SOURCES then
+							c2 = c2 + 1
+							return
+						end
+					end
+
+					local vi = a:index(px + x, py - radius, pz + z)
+					local def = watch_nodes[data[vi]]
+					if def then
+						handle_source(def, px + x, py - radius, pz + z)
+						count = count + 1
+						if count >= MAX_SOURCES then
+							c2 = c2 + 2
+							return
+						end
+					end
+
+					c2 = c2 + 2
+				end
+			end
+
+			radius = radius + 1
+		end
+	end)()
+
+	print("End of scan. Found " .. count .. " sources out of " .. c2 .. " nodes.")
+
+	local err = radius * radius * radius - c2
+	if err > 0 then
+		print("Error! Missing " .. err .. " nodes!")
+	end
+end
+
+minetest.register_chatcommand("e", {
+	func = environment.scan_around_player
+})