332 lines
10 KiB
Lua
332 lines
10 KiB
Lua
local TELEPORT_MAX_DIST = 2606 -- maximum teleport distance in all directions
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local TELEPORT_SHOW_MAX = 6 -- maximum teleports shown in formspec
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local TELEPORT_FUEL = "default:mossycobble" -- fuel item (note: if you change this,
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-- you also need to change formspec text)
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local TELEPORT_INITFUEL = 30 -- initial fuel items for new teleports
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local S
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if minetest.get_translator then
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S = minetest.get_translator("teleports")
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else
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-- Compability translator code to support MT 0.4, which doesn't support
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-- translations for mods.
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local function translate(textdomain, str, ...)
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local arg = {n=select('#', ...), ...}
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return str:gsub("@(.)", function(matched)
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local c = string.byte(matched)
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if string.byte("1") <= c and c <= string.byte("9") then
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return arg[c - string.byte("0")]
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else
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return matched
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end
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end)
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end
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S = function(str, ...)
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return translate("teleports", str, ...)
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end
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end
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local F = minetest.formspec_escape
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teleports = {}
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teleports.teleports = {}
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teleports.lastplayername =""
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teleports.filename = minetest.get_worldpath() .. "/teleports.txt"
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function teleports:save()
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local datastring = minetest.serialize(self.teleports)
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if not datastring then
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return
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end
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local file, err = io.open(self.filename, "w")
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if err then
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return
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end
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file:write(datastring)
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file:close()
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end
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function teleports:load()
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local file, err = io.open(self.filename, "r")
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if err then
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self.teleports = {}
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return
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end
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self.teleports = minetest.deserialize(file:read("*all"))
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if type(self.teleports) ~= "table" then
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self.teleports = {}
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end
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file:close()
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end
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function teleports:find_nearby(pos, count)
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local nearby = {}
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for i = #teleports.teleports, 1, -1 do
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local EachTeleport = teleports.teleports[i]
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if not vector.equals(EachTeleport.pos, pos) and vector.distance(EachTeleport.pos, pos) < TELEPORT_MAX_DIST then
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table.insert(nearby, EachTeleport)
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if #nearby>=count then
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break
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end
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end
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end
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return nearby
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end
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function teleports.animate(pos, playername)
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minetest.add_particlespawner({
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amount = 80,
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time = 5,
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minpos = {x=pos.x-1, y=pos.y, z=pos.z-1},
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maxpos = {x=pos.x+1, y=pos.y+3, z=pos.z+1},
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minvel = {x=0, y=-1, z=0},
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maxvel = {x=0, y=1, z=0},
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minacc = {x=0, y=-1, z=0},
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maxacc = {x=0, y=1, z=0},
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minexptime = 1,
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maxexptime = 1,
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minsize = 0.5,
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maxsize = 2,
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collisiondetection = false,
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vertical = true,
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texture = "default_diamond.png",
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playername = playername,
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})
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minetest.add_particlespawner({
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amount = 20,
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time = 5,
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minpos = {x=pos.x-1, y=pos.y, z=pos.z-1},
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maxpos = {x=pos.x+1, y=pos.y+3, z=pos.z+1},
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minvel = {x=0, y=-1, z=0},
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maxvel = {x=0, y=1, z=0},
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minacc = {x=0, y=-1, z=0},
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maxacc = {x=0, y=1, z=0},
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minexptime = 1,
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maxexptime = 1,
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minsize = 0.5,
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maxsize = 2,
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collisiondetection = false,
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vertical = true,
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texture = "default_diamond.png",
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})
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end
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function teleports.teleportate(parameters)
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local pos1,pos2,playername = parameters[1],parameters[2],parameters[3]
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local player = minetest.get_player_by_name(playername)
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if player and player:is_player() and playername~=teleports.lastplayername then
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local pos = player:getpos()
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if vector.distance(pos, {x=pos1.x,y=pos1.y+0.5,z=pos1.z}) < 0.52 then
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local dest
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if math.random(1, 100) > 5 then
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teleports.lastplayername = playername
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dest = {x=pos2.x,y=pos2.y+0.5,z=pos2.z}
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else
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-- Small chance to "miss" destiation by 1 node horizontally to prevent afk players
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-- from teleporting forever
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dest = {x=pos2.x-2+math.random(1, 3),y=pos2.y+0.5,z=pos2.z-2+math.random(1, 3)}
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end
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player:setpos(dest)
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minetest.sound_play({name="teleports_teleport", gain=1.0}, {pos=dest, max_hear_distance=16}, true)
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end
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end
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end
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function teleports.do_teleporting(pos1, pos2, playername, delay)
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if not delay then
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teleports.teleportate({pos1, pos2, playername})
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else
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minetest.sound_play({name="teleports_charge", gain=0.5}, {pos=pos1, max_hear_distance=8}, true)
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teleports.animate(pos1, playername)
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minetest.after(delay, teleports.teleportate, {pos1, pos2, playername})
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end
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end
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teleports.set_formspec = function(pos, shown_teleports)
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if not shown_teleports then
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shown_teleports = teleports:find_nearby(pos, TELEPORT_SHOW_MAX)
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end
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local meta = minetest.get_meta(pos)
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local node = minetest.get_node(pos)
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local buttons = "";
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local x = 1
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local y = 1
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for i, EachTeleport in ipairs( shown_teleports ) do
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if i == 4 then
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x = x + 3.5
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y = 1
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end
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if EachTeleport["name"] then
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buttons = buttons.."button_exit["..x..","..y..";3.5,0.5;tp"..i..";"..F(S("GO>@1",EachTeleport.name)).."]";
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else
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buttons = buttons.."button_exit["..x..","..y..";3.5,0.5;tp"..i..";"..F(S("GO>@1,@2,@3",EachTeleport.pos.x,EachTeleport.pos.y,EachTeleport.pos.z)).."]";
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end
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y = y + 1
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end
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local label
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if buttons == "" then
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label = S("No teleport in range!")
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else
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label = S("Go to available teleports! Use mossy cobblestone as fuel!")
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end
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meta:set_string("formspec", "size[8,9;]"
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.."label[0,0;"..F(label).."]"
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.."list[current_name;price;0,1;1,1;]"
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..buttons
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.."button_exit[1,4;2,0.5;cancel;"..F(S("Cancel")).."]"
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.."list[current_player;main;0,5;8,4;]")
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end
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teleports.on_receive_fields = function(pos, formname, fields, player)
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local meta = minetest.env:get_meta(pos);
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local inv = meta:get_inventory();
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local price = {name=TELEPORT_FUEL, count=1, wear=0, metadata=""}
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if fields.tp1 or fields.tp2 or fields.tp3 or fields.tp4 or fields.tp5 or fields.tp6 then
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if inv:contains_item("price", price) then
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inv:remove_item("price", price);
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teleports.lastplayername = ""
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local available = teleports:find_nearby(pos, TELEPORT_SHOW_MAX)
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if player ~= nil and player:is_player() then
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local playerpos = player:getpos()
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for i=1, TELEPORT_SHOW_MAX do
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if fields["tp"..i] and #available>i-1 then
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teleports.do_teleporting(playerpos, available[i].pos, player:get_player_name())
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end
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end
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end
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teleports.set_formspec(pos, available)
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end
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end
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end
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teleports.allow_metadata_inventory_put = function(pos, listname, index, stack, player)
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if listname=="price" and stack:get_name()==TELEPORT_FUEL then
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return 99
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else
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return 0
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end
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end
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teleports.allow_metadata_inventory_take = function(pos, listname, index, stack, player)
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return 0
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end
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teleports:load()
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minetest.register_node("teleports:teleport", {
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description = S("Teleport"),
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drawtype = "glasslike",
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tiles = {"teleports_teleport_top.png"},
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is_ground_content = false,
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light_source = minetest.LIGHT_MAX,
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groups = {cracky=1, level=3},
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drop = 'default:diamond',
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sounds = default.node_sound_stone_defaults(),
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after_place_node = function(pos, placer)
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if placer and placer:is_player() then
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local meta = minetest.env:get_meta(pos)
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local inv = meta:get_inventory()
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inv:set_size("price", 1)
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if TELEPORT_INITFUEL > 0 then
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local initialcharge = {name=TELEPORT_FUEL, count=TELEPORT_INITFUEL, wear=0, metadata=""}
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inv:add_item("price", initialcharge)
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end
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-- Add formspec to self
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local near_teleports = teleports:find_nearby(pos, TELEPORT_SHOW_MAX)
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teleports.set_formspec(pos, near_teleports)
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local sign_pos = minetest.find_node_near(pos, 1, {"default:sign_wall_wood", "default:sign_wall_steel"})
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if sign_pos then
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local sign_meta = minetest.env:get_meta(sign_pos)
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local sign_text = sign_meta:get_string("text")
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local secret_name = sign_text:sub(0, 16)
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table.insert(teleports.teleports, {pos=vector.round(pos), name=secret_name})
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else
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table.insert(teleports.teleports, {pos=vector.round(pos)})
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end
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-- Update formspec of target teleports
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for n=1, #near_teleports do
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local pos2 = near_teleports[n].pos
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local near_teleports2 = teleports:find_nearby(pos2, TELEPORT_SHOW_MAX)
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teleports.set_formspec(pos2, near_teleports2)
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end
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teleports:save()
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end
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end,
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on_punch = function(pos, node, puncher, pointed_thing)
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-- Force formspec update on punch
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teleports.set_formspec(pos)
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minetest.log("info", "[teleports] Teleport formspec force-updated: "..minetest.pos_to_string(pos))
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end,
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on_destruct = function(pos)
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-- Update list of teleports on destruction
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local near_teleports = teleports:find_nearby(pos, TELEPORT_SHOW_MAX)
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for i, EachTeleport in ipairs(teleports.teleports) do
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if vector.equals(EachTeleport.pos, pos) then
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table.remove(teleports.teleports, i)
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end
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end
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teleports:save()
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-- Update formspecs of affected teleports
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for n=1, #near_teleports do
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local pos2 = near_teleports[n].pos
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teleports.set_formspec(pos2)
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end
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end,
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on_receive_fields = teleports.on_receive_fields,
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allow_metadata_inventory_put = teleports.allow_metadata_inventory_put,
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allow_metadata_inventory_take = teleports.allow_metadata_inventory_take,
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})
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minetest.register_abm({
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nodenames = {"teleports:teleport"},
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interval = 3,
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chance = 1,
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action = function(pos)
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local objectsnear=minetest.get_objects_inside_radius({x=pos.x,y=pos.y+0.5,z=pos.z}, 0.52);
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if #objectsnear>0 then
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local player = objectsnear[1];
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-- check only first two objekts then give up
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if #objectsnear>1 and not player:is_player() then
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player = objectsnear[2];
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end
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if player:is_player() and player:get_player_name()~=teleports.lastplayername then
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local positions = teleports:find_nearby(pos, 11)
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if #positions>0 then
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local key = math.random(1, #positions)
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local dir, dirmag;
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local view = player:get_look_dir();
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local dist, distmin; distmin = 99;
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for i=1,#positions do -- find teleport closest to where player is looking
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dir = {x=positions[i].pos.x-pos.x,y=positions[i].pos.y-pos.y,z=positions[i].pos.z-pos.z};
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dirmag = math.sqrt(dir.x*dir.x+dir.y*dir.y+dir.z*dir.z); if dirmag == 0 then dirmag = 1 end
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dir.x=dir.x/dirmag;dir.y=dir.y/dirmag;dir.z=dir.z/dirmag;
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dir.x = view.x-dir.x;dir.y = view.y-dir.y;dir.z = view.z-dir.z;
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dist = math.sqrt(dir.x*dir.x+dir.y*dir.y+dir.z*dir.z);
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if dist<distmin then distmin = dist; key = i end
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end
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local pos2 = positions[key].pos
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teleports.do_teleporting(pos, pos2, player:get_player_name(), 3.0)
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end
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else
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teleports.lastplayername = ""
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end
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end
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end,
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})
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minetest.register_craft({
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output = "teleports:teleport",
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recipe = {
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{"default:diamond","default:diamond","default:diamond"},
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{"default:diamond","default:obsidian","default:diamond"},
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{"default:diamond","default:diamond","default:diamond"},
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}
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})
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