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filename=minetest.get_worldpath() .. "/teleport_tubes"
function read_file()
local f = io.open(filename, "r")
if f==nil then return {} end
local t = f:read("*all")
f:close()
if t=="" or t==nil then return {} end
return minetest.deserialize(t)
end
function write_file(tbl)
local f = io.open(filename, "w")
f:write(minetest.serialize(tbl))
f:close()
end
function add_tube_in_file(pos,channel, cr)
tbl=read_file()
for _,val in ipairs(tbl) do
if val.x==pos.x and val.y==pos.y and val.z==pos.z then
return
end
end
table.insert(tbl,{x=pos.x,y=pos.y,z=pos.z,channel=channel,cr=cr})
write_file(tbl)
end
function remove_tube_in_file(pos)
tbl=read_file()
newtbl={}
for _,val in ipairs(tbl) do
if val.x~=pos.x or val.y~=pos.y or val.z~=pos.z then
table.insert(newtbl,val)
end
end
write_file(newtbl)
end
function get_tubes_in_file(pos,channel)
tbl=read_file()
newtbl={}
changed=false
for _,val in ipairs(tbl) do
local node = minetest.get_node(val)
local meta = minetest.get_meta(val)
if node.name~="ignore" and (val.channel~=meta:get_string("channel") or val.cr~=meta:get_int("can_receive")) then
val.channel=meta:get_string("channel")
val.cr=meta:get_int("can_receive")
changed=true
end
if val.cr==1 and val.channel==channel and (val.x~=pos.x or val.y~=pos.y or val.z~=pos.z) then
table.insert(newtbl,val)
end
end
if changed then write_file(tbl) end
return newtbl
end
teleport_noctr_textures={"pipeworks_teleport_tube_noctr.png","pipeworks_teleport_tube_noctr.png","pipeworks_teleport_tube_noctr.png",
"pipeworks_teleport_tube_noctr.png","pipeworks_teleport_tube_noctr.png","pipeworks_teleport_tube_noctr.png"}
teleport_plain_textures={"pipeworks_teleport_tube_plain.png","pipeworks_teleport_tube_plain.png","pipeworks_teleport_tube_plain.png",
"pipeworks_teleport_tube_plain.png","pipeworks_teleport_tube_plain.png","pipeworks_teleport_tube_plain.png"}
teleport_end_textures={"pipeworks_teleport_tube_end.png","pipeworks_teleport_tube_end.png","pipeworks_teleport_tube_end.png",
"pipeworks_teleport_tube_end.png","pipeworks_teleport_tube_end.png","pipeworks_teleport_tube_end.png"}
teleport_short_texture="pipeworks_teleport_tube_short.png"
teleport_inv_texture="pipeworks_teleport_tube_inv.png"
register_tube("pipeworks:teleport_tube","Teleporter pneumatic tube segment",teleport_plain_textures,
teleport_noctr_textures,teleport_end_textures,teleport_short_texture,teleport_inv_texture,
{tube={can_go=function(pos,node,velocity,stack)
velocity.x=0
velocity.y=0
velocity.z=0
local meta = minetest.get_meta(pos)
channel=meta:get_string("channel")
local target=get_tubes_in_file(pos,channel)
if target[1]==nil then return {} end
d=math.random(1,#target)
pos.x=target[d].x
pos.y=target[d].y
pos.z=target[d].z
return meseadjlist
end},
on_construct = function(pos)
local meta = minetest.get_meta(pos)
meta:set_string("channel","")
meta:set_int("can_receive",1)
meta:set_string("formspec","size[9,1;]"..
"field[0,0.5;7,1;channel;Channel:;${channel}]"..
"button[8,0;1,1;bt;On]")
add_tube_in_file(pos,"")
end,
on_receive_fields = function(pos,formname,fields,sender)
local meta = minetest.get_meta(pos)
if fields.channel==nil then fields.channel=meta:get_string("channel") end
meta:set_string("channel",fields.channel)
remove_tube_in_file(pos)
local cr = meta:get_int("can_receive")
if fields["bt"] then
cr=1-cr
meta:set_int("can_receive",cr)
if cr==1 then
meta:set_string("formspec","size[9,1;]"..
"field[0,0.5;7,1;channel;Channel:;${channel}]"..
"button[8,0;1,1;bt;On]")
else
meta:set_string("formspec","size[9,1;]"..
"field[0,0.5;7,1;channel;Channel:;${channel}]"..
"button[8,0;1,1;bt;Off]")
end
end
add_tube_in_file(pos,fields.channel, cr)
end,
on_destruct = function(pos)
remove_tube_in_file(pos)
end})
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