MoreMesecons/moremesecons_teleporter/init.lua

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local teleporters = {}
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local teleporters_rids = {}
local register = function(pos)
if not vector.get_data_from_pos(teleporters_rids, pos.z,pos.y,pos.x) then
table.insert(teleporters, pos)
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vector.set_data_to_pos(teleporters_rids, pos.z,pos.y,pos.x, #teleporters)
end
end
local teleport_nearest = function(pos)
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local MAX_TELEPORTATION_DISTANCE = 50
local MAX_PLAYER_DISTANCE = 25
-- Search the nearest player
local nearest = nil
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local min_distance = MAX_PLAYER_DISTANCE
local players = minetest.get_connected_players()
for index, player in pairs(players) do
local distance = vector.distance(pos, player:getpos())
if distance < min_distance then
min_distance = distance
nearest = player
end
end
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if not nearest then
-- If there is no nearest player (maybe too far...)
return
end
-- Search other teleporter and teleport
if not minetest.registered_nodes["moremesecons_teleporter:teleporter"] then return end
local newpos = {}
for i = 1, #teleporters do
if minetest.get_node(teleporters[i]).name == "moremesecons_teleporter:teleporter" then
if teleporters[i].y == pos.y and teleporters[i].x == pos.x and teleporters[i].z ~= pos.z then
newpos = {x=teleporters[i].x, y=teleporters[i].y+1, z=teleporters[i].z}
elseif teleporters[i].z == pos.z and teleporters[i].x == pos.x and teleporters[i].y ~= pos.y then
newpos = {x=teleporters[i].x, y=teleporters[i].y+1, z=teleporters[i].z}
elseif teleporters[i].z == pos.z and teleporters[i].y == pos.y and teleporters[i].x ~= pos.x then
newpos = {x=teleporters[i].x, y=teleporters[i].y+1, z=teleporters[i].z}
end
end
end
if newpos.x then
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-- If there is another teleporter BUT too far, delete newpos.
if vector.distance(newpos, pos) > MAX_TELEPORTATION_DISTANCE then
newpos = {}
end
end
if not newpos.x then
newpos = {x=pos.x, y=pos.y+1, z=pos.z} -- If newpos doesn't exist, teleport on the actual teleporter.
end
nearest:moveto(newpos)
minetest.log("action", "Player "..nearest:get_player_name().." was teleport with a MoreMesecons Teleporter.")
end
minetest.register_craft({
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output = "moremesecons_teleporter:teleporter 2",
recipe = {{"default:diamond","default:stick","default:mese"}}
})
minetest.register_node("moremesecons_teleporter:teleporter", {
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tiles = {"moremesecons_teleporter.png"},
paramtype = "light",
walkable = true,
groups = {cracky=3},
description="Teleporter",
mesecons = {effector = {
state = mesecon.state.off,
action_on = teleport_nearest
}},
sounds = default.node_sound_stone_defaults(),
on_construct = register,
on_destruct = function(pos)
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local RID = vector.get_data_from_pos(teleporters_rids, pos.z,pos.y,pos.x)
if RID then
table.remove(teleporters, RID)
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vector.remove_data_from_pos(teleporters_rids, pos.z,pos.y,pos.x)
end
end,
})
minetest.register_lbm({
name = "moremesecons_teleporter:add_teleporter",
nodenames = {"moremesecons_teleporter:teleporter"},
action = register
})