VoxeLibre/mods/ITEMS/mcl_jukebox/init.lua

-- Player name-indexed table containing the currently heard track
local active_tracks = {}

-- Player name-indexed table containing the current used HUD ID for the “Now playing” message.
local active_huds = {}

-- Player name-indexed table for the “Now playing” message.
-- Used to make sure that minetest.after only applies to the latest HUD change event
local hud_sequence_numbers = {}

-- List of music
local recorddata = {
	-- { title, author, identifier }
	{ "The Evil Sister (Jordach's Mix)", "SoundHelix", "13" } ,
	{ "The Energetic Rat (Jordach's Mix)", "SoundHelix", "wait" },
	{ "Eastern Feeling", "Jordach", "blocks"},
	{ "Minetest", "Jordach", "far" },
	{ "Credit Roll (Jordach's HD Mix)", "Junichi Masuda", "chirp" },
	{ "Winter Feeling", "Tom Peter", "strad" },
	{ "Synthgroove (Jordach's Mix)", "HeroOfTheWinds", "mellohi" },
	{ "The Clueless Frog (Jordach's Mix)", "SoundHelix", "mall" },
}
local records = #recorddata

for r=1, records do
	local doc = false
	local entryname, longdesc, usagehelp
	if r == 1 then
		doc = true
		entryname = "Music Disc"
		longdesc = "A music disc holds a single music track which can be used in a jukebox to play music."
		usagehelp = "Rightclick an empty jukebox with the music disc in your hand to play the music. Rightclick the jukebox again to retrieve the music disc. The music can only be heard by you, not by other players."
	end
	minetest.register_craftitem("mcl_jukebox:record_"..r, {
		description =
			core.colorize("#55FFFF", "Music Disc") .. "\n" ..
			core.colorize("#989898", recorddata[r][2] .. "—" .. recorddata[r][1]),
		_doc_items_create_entry = doc,
		_doc_items_entry_name = entryname,
		_doc_items_longdesc = longdesc,
		_doc_items_usagehelp = usagehelp,
		inventory_image = "mcl_jukebox_record_"..recorddata[r][3]..".png",
		stack_max = 1,
		groups = { music_record = r },
	})
end

local function now_playing(player, track_id)
	local playername = player:get_player_name()
	local hud = active_huds[playername]
	local text = "Now playing: " .. recorddata[track_id][2] .. "—" .. recorddata[track_id][1]

	if not hud_sequence_numbers[playername] then
		hud_sequence_numbers[playername] = 1
	else
		hud_sequence_numbers[playername] = hud_sequence_numbers[playername] + 1
	end

	local id
	if hud ~= nil then
		id = hud
		player:hud_change(id, "text", text)
	else
		id = player:hud_add({
			hud_elem_type = "text",
			position = { x=0.5, y=0.8 },
			offset = { x=0, y = 0 },
			size = { x=100, y=100},
			number = 0x55FFFF,
			text = text,
		})
		active_huds[playername] = id
	end
	minetest.after(5, function(tab)
		local player = tab[1]
		local playername = player:get_player_name()
		local id = tab[2]
		local seq = tab[3]
		if not player or not player:is_player() or not active_huds[playername] or not hud_sequence_numbers[playername] or seq ~= hud_sequence_numbers[playername] then
			return
		end
		if id == active_huds[playername] then
			player:hud_remove(active_huds[playername])
			active_huds[playername] = nil
		end
	end, {player, id, hud_sequence_numbers[playername]})
	
end

minetest.register_on_leaveplayer(function(player)
	active_tracks[player:get_player_name()] = nil
	active_huds[player:get_player_name()] = nil
	hud_sequence_numbers[player:get_player_name()] = nil
end)

-- Jukebox crafting
minetest.register_craft({
	output = 'mcl_jukebox:jukebox',
	recipe = {
		{'group:wood', 'group:wood', 'group:wood'},
		{'group:wood', 'mcl_core:diamond', 'group:wood'},
		{'group:wood', 'group:wood', 'group:wood'},
	}
})


-- Jukebox
minetest.register_node("mcl_jukebox:jukebox", {
	description = "Jukebox",
	_doc_items_longdesc = "Jukeboxes play music when they're supplied with a music disc.",
	_doc_items_usagehelp = "Place a music disc into an empty jukebox to insert the music disc and play music. If the jukebox already has a music disc, you will retrieve this music disc first. The music can only be heard by you, not by other players.",
	tiles = {"mcl_jukebox_top.png", "mcl_jukebox_side.png", "mcl_jukebox_side.png"},
	sounds = mcl_sounds.node_sound_wood_defaults(),
	groups = {handy=1,axey=1, deco_block=1, material_wood=1},
	is_ground_content = false,
	on_construct = function(pos)
		local meta = minetest.get_meta(pos)
		local inv = meta:get_inventory()
		inv:set_size("main", 1)
	end,
	on_rightclick= function(pos, node, clicker, itemstack, pointed_thing)
		if not clicker then return end
		local cname = clicker:get_player_name()
	
		local meta = minetest.get_meta(pos)
		local inv = meta:get_inventory()
		if not inv:is_empty("main") then
			-- Jukebox contains a disc: Stop music and remove disc
			if active_tracks[cname] ~= nil then
				minetest.sound_stop(active_tracks[cname])
			end
			local lx = pos.x
			local ly = pos.y+1
			local lz = pos.z
			local record = inv:get_stack("main", 1)
			minetest.add_item({x=lx, y=ly, z=lz}, record:get_name())
			inv:set_stack("main", 1, "")
			if active_tracks[cname] ~= nil then
				minetest.sound_stop(active_tracks[cname])
				clicker:hud_remove(active_huds[cname])
				active_tracks[cname] = nil
				active_huds[cname] = nil
			end
		else
			-- Jukebox is empty: Play track if player holds music record
			local record_id = minetest.get_item_group(itemstack:get_name(), "music_record")
			if record_id ~= 0 then
				if active_tracks[cname] ~= nil then
					minetest.sound_stop(active_tracks[cname])
					active_tracks[cname] = nil
				end
				active_tracks[cname] = minetest.sound_play("mcl_jukebox_track_"..record_id, {
					to_player = cname,
					--max_hear_distance = 16,
					gain = 1,
				})
				now_playing(clicker, record_id)
				inv:set_stack("main", 1, itemstack:get_name())
				itemstack:take_item()
				return itemstack
			end
		end
	end,
	after_dig_node = function(pos, oldnode, oldmetadata, digger)
		local name = digger:get_player_name()
		local meta = minetest.get_meta(pos)
		local meta2 = meta
		meta:from_table(oldmetadata)
		local inv = meta:get_inventory()
		local stack = inv:get_stack("main", 1)
		if not stack:is_empty() then
			local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
			minetest.add_item(p, stack)
			if active_tracks[name] ~= nil then
				minetest.sound_stop(active_tracks[name])
				digger:hud_remove(active_huds[name])
				active_tracks[name] = nil
				active_huds[name] = nil
			end
		end
		meta:from_table(meta2:to_table())
	end,
	_mcl_blast_resistance = 30,
	_mcl_hardness = 2,
})

minetest.register_craft({
	type = "fuel",
	recipe = "mcl_jukebox:jukebox",
	burntime = 15,
})