Bug fixes and improvements for tubes

This commit is contained in:
Joachim Stolberg 2018-06-21 20:33:37 +02:00
parent f6382ee75c
commit b291a3171b
4 changed files with 492 additions and 543 deletions

@ -83,7 +83,8 @@ minetest.register_craft({
}) })
dofile(minetest.get_modpath("tubelib") .. "/tubes.lua") dofile(minetest.get_modpath("tubelib") .. "/tubes1.lua")
dofile(minetest.get_modpath("tubelib") .. "/tubes2.lua")
dofile(minetest.get_modpath("tubelib") .. "/command.lua") dofile(minetest.get_modpath("tubelib") .. "/command.lua")
dofile(minetest.get_modpath("tubelib") .. "/states.lua") dofile(minetest.get_modpath("tubelib") .. "/states.lua")
dofile(minetest.get_modpath("tubelib") .. "/pusher.lua") dofile(minetest.get_modpath("tubelib") .. "/pusher.lua")

@ -1,542 +0,0 @@
--[[
Tube Library
============
Copyright (C) 2017 Joachim Stolberg
LGPLv2.1+
See LICENSE.txt for more information
History:
see init.lua
Funtions for tube placement/alignment
]]--
--[[
Tubes 1..5 can be placed according to 'param2'.
The two openings point in the directions 'dir',
(N=1, E=2, S=3, W=4, D=5, U=6)
which corresponds to the following tube alignments:
tube No | param2 | dir | alignment
--------+--------+-----+-------------
1 | 0 | N/S | 1*6 + 3 = 9
1 | 1 | E/W | 2*6 + 4 = 16
2 | 0 | D/U | 5*6 + 6 = 36
3 | 0 | S/W | 3*6 + 4 = 22
3 | 1 | N/W | 1*6 + 4 = 10
3 | 2 | N/E | 1*6 + 2 = 8
3 | 3 | E/S | 2*6 + 3 = 15
4 | 0 | S/D | 3*6 + 5 = 23
4 | 1 | W/D | 4*6 + 5 = 29
4 | 2 | N/D | 1*6 + 5 = 11
4 | 3 | E/D | 2*6 + 5 = 17
5 | 0 | S/U | 3*6 + 6 = 24
5 | 1 | W/U | 4*6 + 6 = 30
5 | 2 | N/U | 1*6 + 6 = 12
5 | 3 | E/U | 2*6 + 6 = 18
]]--
-- debugging
local P = minetest.pos_to_string
local MAX_TUBE_LENGTH = 100
-- Conversion from tube alignment to tube number
local TubeTypes = {
0,0,0,0,0, 0,0,3,1,3, -- 01-10
4,5,3,1,3, 1,4,5,1,3, -- 11-20
1,3,4,5,3, 1,3,1,4,5, -- 21-30
2,2,2,2,0, 2,2,2,5,2, -- 31-40
5,0, -- 41-42
}
-- Conversion from tube alignment to param2
local TubeParam2 = {
0,0,0,0,0, 0,0,2,0,1, -- 01-10
2,2,2,1,3, 1,3,3,0,3, -- 11-20
0,0,0,0,1, 1,0,1,1,1, -- 21-30
0,0,0,0,0, 0,0,0,0,0, -- 31-40
0,0, -- 41-42
}
-- Conversion from tube number/param2 to tube hole dirs (view from the outside)
local TubeHoles = {
[10] = {1,3},
[12] = {1,3},
[11] = {2,4},
[13] = {2,4},
[20] = {5,6},
[21] = {5,6},
[22] = {5,6},
[23] = {5,6},
[30] = {1,2},
[31] = {1,2},
[32] = {1,2},
[33] = {1,2},
[31] = {3,2},
[32] = {3,4},
[33] = {1,4},
[40] = {1,6},
[41] = {2,6},
[42] = {3,6},
[43] = {4,6},
[50] = {1,5},
[51] = {2,5},
[52] = {3,5},
[53] = {4,5},
}
-- Convertion of 'dir' (view from the outside to inside and vs)
local Turn180Deg = {3,4,1,2,6,5}
local Dir2Offset = {
{x=0, y=0, z=1},
{x=1, y=0, z=0},
{x=0, y=0, z=-1},
{x=-1, y=0, z=0},
{x=0, y=-1, z=0},
{x=0, y=1, z=0}
}
local TubeNames = {
["tubelib:tube1"] = true,
["tubelib:tube2"] = true,
["tubelib:tube3"] = true,
["tubelib:tube4"] = true,
["tubelib:tube5"] = true,
}
-- used for registered nodes
tubelib.KnownNodes = {
["tubelib:tube1"] = true,
["tubelib:tube2"] = true,
["tubelib:tube3"] = true,
["tubelib:tube4"] = true,
["tubelib:tube5"] = true,
}
-- Convertion of contact side to facedir
local SideToFacedir = {B=0, R=1, F=2, L=3, D=4, U=5}
-------------------------------------------------------------------------------
-- Helper functions
-------------------------------------------------------------------------------
local function in_list(list, x)
for _, v in ipairs(list) do
if v == x then return true end
end
return false
end
-- convert 6D-dir to position
local function dir_to_pos(pos, dir)
return vector.add(pos, Dir2Offset[dir])
end
-- return all 6 relevant surrounding positions
local function get_6Pos(pos)
return {
{x=pos.x , y=pos.y , z=pos.z+1},
{x=pos.x+1, y=pos.y , z=pos.z },
{x=pos.x , y=pos.y , z=pos.z-1},
{x=pos.x-1, y=pos.y , z=pos.z },
{x=pos.x , y=pos.y-1, z=pos.z },
{x=pos.x , y=pos.y+1, z=pos.z },
}
end
-- Calculate the facedir to the other node, based on both node positions
local function dir_to_facedir(my_pos, other_pos)
if my_pos.z ~= other_pos.z then return my_pos.z - other_pos.z + 1 end
if my_pos.x ~= other_pos.x then return my_pos.x - other_pos.x + 2 end
if my_pos.y > other_pos.y then return 5 else return 4 end
end
-- The 'oldnode' on 'pos' had two ends and thus two neighbor position.
local function nodetype_to_pos(pos, node)
local key = (string.byte(node.name, -1) - 48) * 10 + (node.param2 % 4)
local pos1 = dir_to_pos(pos, Turn180Deg[TubeHoles[key][1]])
local pos2 = dir_to_pos(pos, Turn180Deg[TubeHoles[key][2]])
return pos1, pos2
end
-- use Voxel Manipulator to read the node
function tubelib.read_node_with_vm(pos)
local vm = VoxelManip()
local MinEdge, MaxEdge = vm:read_from_map(pos, pos)
local data = vm:get_data()
local param2_data = vm:get_param2_data()
local area = VoxelArea:new({MinEdge = MinEdge, MaxEdge = MaxEdge})
return {
name = minetest.get_name_from_content_id(data[area:index(pos.x, pos.y, pos.z)]),
param2 = param2_data[area:index(pos.x, pos.y, pos.z)]
}
end
-- Walk to the other end of the tube line, starting at 'pos1'.
-- Returns: cnt - number of tube nodes
-- pos - the peer tube node
-- pos1 - the drop position, next after 'pos'
local function walk_to_peer(pos, pos1)
local node = minetest.get_node(pos1)
local cnt = 0
while TubeNames[node.name] and cnt < MAX_TUBE_LENGTH do
local new_pos1, new_pos2 = nodetype_to_pos(pos1, node)
if vector.equals(new_pos1, pos) then
pos = pos1
pos1 = new_pos2
elseif vector.equals(new_pos2, pos) then
pos = pos1
pos1 = new_pos1
end
cnt = cnt + 1
node = minetest.get_node_or_nil(pos1) or tubelib.read_node_with_vm(pos1)
end
return cnt, pos, pos1
end
-- Delete meta data of the peer node
local function delete_meta_data(pos, node)
local pos1, pos2 = nodetype_to_pos(pos, node)
if pos1 then
local cnt, pos, pos1 = walk_to_peer(pos, pos1)
-- delete meta on peer tube
if cnt > 0 then
minetest.get_meta(pos):from_table(nil)
end
end
if pos2 then
local cnt, pos, pos1 = walk_to_peer(pos, pos2)
-- delete meta on peer tube
if cnt > 0 then
minetest.get_meta(pos):from_table(nil)
end
end
end
-------------------------------------------------------------------------------
-- Place a tube node
-------------------------------------------------------------------------------
-- always use the smaller number first
local function calc_alignment(dir1, dir2)
if dir1 < dir2 then
return dir1 * 6 + dir2
else
return dir2 * 6 + dir1
end
end
-- Determine the tube alignment
-- based on 2 neighbor tubes, or one neighbour
-- and node.param2
local function get_alignment(pos, lDirs, pitch)
if #lDirs == 1 then
if pitch > 1 then
table.insert(lDirs, {dir = 6})
elseif pitch < -1 then
table.insert(lDirs, {dir = 5})
else
local node = minetest.get_node(pos)
table.insert(lDirs, {dir = ((node.param2 + 2) % 4) + 1})
end
end
if #lDirs >= 2 then
return calc_alignment(lDirs[1].dir, lDirs[2].dir)
end
end
-- return number of tubelib compatible nodes on the 6 surrounding positions
-- plus their alignment
local function get_num_conn(pos)
local num = 0
local lDir = {}
for dir,npos in ipairs(get_6Pos(pos)) do
local node = minetest.get_node(npos)
if tubelib.KnownNodes[node.name] then
num = num + 1
table.insert(lDir, {dir=dir, almnt=0})
end
end
return num, get_alignment(pos, lDir, 0)
end
local function open_hole(dir, name, param2)
local key = (string.byte(name, -1) - 48) * 10 + param2
if in_list(TubeHoles[key], dir) then
return true
end
return false
end
-- Return all tubes with less then 3 connections
local function get_any_neighbour_tubes(pos)
local lAttr= {} -- used as result
for dir,npos in ipairs(get_6Pos(pos)) do
local node = minetest.get_node(npos)
if TubeNames[node.name] then
local num, almnt = get_num_conn(npos)
if num < 3 then
table.insert(lAttr, {dir=dir, almnt=almnt})
end
elseif tubelib.KnownNodes[node.name] then
-- chests and other nodes
table.insert(lAttr, {dir=dir, almnt=0})
end
end
return lAttr
end
-- Return all tubes with holes pointing in 'pos' direction
local function get_tubes_with_visible_holes(pos)
local lAttr= {} -- used as result
for dir,npos in ipairs(get_6Pos(pos)) do
local node = minetest.get_node(npos)
if TubeNames[node.name] then
if open_hole(dir, node.name, node.param2) then
table.insert(lAttr, {dir=dir})
end
elseif tubelib.KnownNodes[node.name] then
-- chests and other nodes
table.insert(lAttr, {dir=dir, almnt=0})
end
end
return lAttr
end
local function update_tube(pos, dir, almnt)
if dir then
pos = dir_to_pos(pos, dir)
end
local node = minetest.get_node(pos)
node.name = "tubelib:tube"..TubeTypes[almnt]
node.param2 = TubeParam2[almnt]
minetest.swap_node(pos, node)
delete_meta_data(pos, node)
end
-- If tube has surrounding tubes with open ends,
-- start the update process of the neighbour tubes and the new tube.
local function update_tubes(pos, pitch)
local lAttr = get_tubes_with_visible_holes(pos)
if #lAttr > 0 then
local almnt = get_alignment(pos, lAttr, pitch)
update_tube(pos, nil, almnt)
else
lAttr = get_any_neighbour_tubes(pos)
if #lAttr == 1 then
update_tube(pos, lAttr[1].dir, lAttr[1].almnt)
local almnt = get_alignment(pos, lAttr, pitch)
update_tube(pos, nil, almnt)
end
end
return true
end
-------------------------------------------------------------------------------
-- Remove a tube node
-------------------------------------------------------------------------------
-- Update tubes after a tube node is removed
local function after_tube_removed(pos, oldnode)
local pos1, pos2 = nodetype_to_pos(pos, oldnode)
if pos1 then
local cnt, pos, pos1 = walk_to_peer(pos, pos1)
-- delete meta on peer tube
if cnt > 0 then
minetest.get_meta(pos):from_table(nil)
end
end
if pos2 then
local cnt, pos, pos1 = walk_to_peer(pos, pos2)
-- delete meta on peer tube
if cnt > 0 then
minetest.get_meta(pos):from_table(nil)
end
end
end
-------------------------------------------------------------------------------
-- API functions
-------------------------------------------------------------------------------
local function remote_node(pos, npos)
local meta = minetest.get_meta(npos)
-- legacy tube?
if meta:get_string("dest_pos2") ~= "" then
meta:from_table(nil)
end
-- data available
local dest_pos = meta:get_string("dest_pos")
if dest_pos ~= "" then
local npos = minetest.string_to_pos(dest_pos)
local facedir = meta:get_int("facedir")
return npos, facedir
end
-- determine data
_,_, npos = walk_to_peer(pos, npos)
local facedir = dir_to_facedir(pos, npos)
meta:set_string("dest_pos", minetest.pos_to_string(npos))
meta:set_int("facedir", facedir)
return npos, facedir
end
-- Determine neighbor position and own facedir to the node.
-- based on own pos and contact side 'B' - 'U'.
-- Function considers also tube connections.
function tubelib.get_neighbor_pos(pos, side)
local facedir = SideToFacedir[side]
if facedir < 4 then
local node = minetest.get_node(pos)
facedir = ((facedir + node.param2) % 4)
end
local npos = dir_to_pos(pos, facedir+1)
local node = minetest.get_node(npos)
if TubeNames[node.name] then
npos, facedir = remote_node(pos, npos)
end
return npos, facedir
end
-------------------------------------------------------------------------------
-- Node registration
-------------------------------------------------------------------------------
local DefNodeboxes = {
-- x1 y1 z1 x2 y2 z2
{ -1/4, -1/4, -1/4, 1/4, 1/4, 1/4 },
{ -1/4, -1/4, -1/4, 1/4, 1/4, 1/4 },
}
local DirCorrections = {
{3, 6}, {2, 5}, -- standard tubes
{3, 1}, {3, 2}, {3, 5}, -- knees from front to..
}
local SelectBoxes = {
{ -1/4, -1/4, -1/2, 1/4, 1/4, 1/2 },
{ -1/4, -1/2, -1/4, 1/4, 1/2, 1/4 },
{ -1/2, -1/4, -1/2, 1/4, 1/4, 1/4 },
{ -1/4, -1/2, -1/2, 1/4, 1/4, 1/4 },
{ -1/4, -1/4, -1/2, 1/4, 1/2, 1/4 },
}
local TilesData = {
-- up, down, right, left, back, front
{
"tubelib_tube.png^[transformR90",
"tubelib_tube.png^[transformR90",
"tubelib_tube.png",
"tubelib_tube.png",
"tubelib_hole.png",
"tubelib_hole.png",
},
{
"tubelib_hole.png",
"tubelib_hole.png",
"tubelib_tube.png^[transformR90",
"tubelib_tube.png^[transformR90",
"tubelib_tube.png^[transformR90",
"tubelib_tube.png^[transformR90",
},
{
"tubelib_knee.png^[transformR270",
"tubelib_knee.png^[transformR180",
"tubelib_knee2.png^[transformR270",
"tubelib_hole2.png^[transformR90",
"tubelib_knee2.png^[transformR90",
"tubelib_hole2.png^[transformR270",
},
{
"tubelib_knee2.png",
"tubelib_hole2.png^[transformR180",
"tubelib_knee.png^[transformR270",
"tubelib_knee.png",
"tubelib_knee2.png",
"tubelib_hole2.png",
},
{
"tubelib_hole2.png",
"tubelib_knee2.png^[transformR180",
"tubelib_knee.png^[transformR180",
"tubelib_knee.png^[transformR90",
"tubelib_knee2.png^[transformR180",
"tubelib_hole2.png^[transformR180",
},
}
for idx,pos in ipairs(DirCorrections) do
local node_box_data = table.copy(DefNodeboxes)
node_box_data[1][pos[1]] = node_box_data[1][pos[1]] * 2
node_box_data[2][pos[2]] = node_box_data[2][pos[2]] * 2
local tiles_data = TilesData[idx]
local hidden
if idx == 1 then
hidden = 0
else
hidden = 1
end
minetest.register_node("tubelib:tube"..idx, {
description = "Tubelib Tube",
tiles = tiles_data,
drawtype = "nodebox",
node_box = {
type = "fixed",
fixed = node_box_data,
},
selection_box = {
type = "fixed",
fixed = SelectBoxes[idx],
},
collision_box = {
type = "fixed",
fixed = SelectBoxes[idx],
},
after_place_node = function(pos, placer, itemstack, pointed_thing)
update_tubes(pos, placer:get_look_vertical())
end,
after_dig_node = function(pos, oldnode, oldmetadata, digger)
delete_meta_data(pos, oldnode)
end,
on_rotate = screwdriver.disallow,
paramtype2 = "facedir",
paramtype = "light",
sunlight_propagates = true,
is_ground_content = false,
groups = {choppy=2, cracky=3, stone=1, not_in_creative_inventory=hidden},
drop = "tubelib:tube1",
sounds = default.node_sound_wood_defaults(),
})
end
minetest.register_craft({
output = "tubelib:tube1 4",
recipe = {
{"default:steel_ingot", "", "group:wood"},
{"", "group:wood", ""},
{"group:wood", "", "default:tin_ingot"},
},
})

276
tubelib/tubes1.lua Normal file

@ -0,0 +1,276 @@
--[[
Tube Library
============
Copyright (C) 2017-2018 Joachim Stolberg
LGPLv2.1+
See LICENSE.txt for more information
History:
see init.lua
tubes1.lua: Functions to place and remove tubes
]]--
-- debugging
local P = minetest.pos_to_string
local MAX_TUBE_LENGTH = 100
-- Conversion from tube number/param2 (number*10 + param2) to tube hole dirs (view from the inside)
local TubeDirs = {
[10] = {1,3},
[11] = {2,4},
[12] = {1,3},
[13] = {2,4},
[20] = {5,6},
[21] = {5,6},
[22] = {5,6},
[23] = {5,6},
[30] = {3,4},
[31] = {1,4},
[32] = {1,2},
[33] = {2,3},
[40] = {3,5},
[41] = {4,5},
[42] = {1,5},
[43] = {2,5},
[50] = {3,6},
[51] = {4,6},
[52] = {1,6},
[53] = {2,6},
}
-- Conversion from tube dirs (dir1 * 10 + dir2) to tube number/param2
local TubeNodeAttr = {}
for k,v in pairs(TubeDirs) do
local key = v[1] * 10 + v[2]
local number = math.floor(k / 10)
local param2 = k % 10
TubeNodeAttr[key] = {number = number, param2 = param2}
end
-- Convertion of 'dir' (view from the outside to inside and vs)
local Turn180Deg = {3,4,1,2,6,5}
local Dir2Offset = {
{x=0, y=0, z=1},
{x=1, y=0, z=0},
{x=0, y=0, z=-1},
{x=-1, y=0, z=0},
{x=0, y=-1, z=0},
{x=0, y=1, z=0}
}
tubelib.TubeNames = {
["tubelib:tube1"] = true,
["tubelib:tube2"] = true,
["tubelib:tube3"] = true,
["tubelib:tube4"] = true,
["tubelib:tube5"] = true,
}
-- used for registered nodes
tubelib.KnownNodes = {
["tubelib:tube1"] = true,
["tubelib:tube2"] = true,
["tubelib:tube3"] = true,
["tubelib:tube4"] = true,
["tubelib:tube5"] = true,
}
-- use Voxel Manipulator to read the node
function tubelib.read_node_with_vm(pos)
local vm = VoxelManip()
local MinEdge, MaxEdge = vm:read_from_map(pos, pos)
local data = vm:get_data()
local param2_data = vm:get_param2_data()
local area = VoxelArea:new({MinEdge = MinEdge, MaxEdge = MaxEdge})
return {
name = minetest.get_name_from_content_id(data[area:index(pos.x, pos.y, pos.z)]),
param2 = param2_data[area:index(pos.x, pos.y, pos.z)]
}
end
local function get_tube_number_and_param2(dir1, dir2)
if dir1 == dir2 then
dir2 = Turn180Deg[dir1]
end
if dir1 > dir2 then
dir1, dir2 = dir2, dir1
end
local item = TubeNodeAttr[dir1*10 + dir2]
return item.number, item.param2
end
-- convert 6D-dir to position
local function get_tube_pos(pos, dir)
return vector.add(pos, Dir2Offset[dir])
end
-- Tube open sides
local function get_tube_dirs(pos, node)
if node == nil then
node = minetest.get_node_or_nil(pos) or tubelib.read_node_with_vm(pos)
end
if tubelib.TubeNames[node.name] then
local ttype = (string.byte(node.name, -1) - 48) * 10 + node.param2
return TubeDirs[ttype][1], TubeDirs[ttype][2]
end
return nil, nil
end
function tubelib.get_next_tube(pos, dir)
pos = get_tube_pos(pos, dir)
local dir1, dir2 = get_tube_dirs(pos)
if dir1 then
dir = Turn180Deg[dir]
if dir == dir1 then
return pos, dir2
elseif dir == dir2 then
return pos, dir1
end
end
return pos, nil
end
local function get_next_node(pos, dir)
pos = get_tube_pos(pos, dir)
local node = minetest.get_node_or_nil(pos) or tubelib.read_node_with_vm(pos)
if tubelib.KnownNodes[node.name] then
return node
end
return nil
end
-- Walk to the other end of the tube line, starting at 'pos/dir'.
-- Returns: cnt - number of tube nodes
-- pos - the peer tube node
-- dir - dir to the drop position, next after 'pos'
function tubelib.walk_to_peer(pos, dir)
local cnt = 0
while cnt < MAX_TUBE_LENGTH do
local new_pos, new_dir = tubelib.get_next_tube(pos, dir)
if not new_dir then
break
end
cnt = cnt + 1
pos, dir = new_pos, new_dir
end
return cnt, pos, dir
end
-- Delete meta data of the peer node
function tubelib.delete_meta_data(pos, node)
local dir1, dir2 = get_tube_dirs(pos, node)
local cnt1 = 0
local dir
if dir1 then
cnt1, pos, dir = tubelib.walk_to_peer(pos, dir1)
-- delete meta on peer tube
if cnt1 > 0 then
minetest.get_meta(pos):from_table(nil)
end
end
local cnt2 = 0
if dir2 then
cnt2, pos, dir = tubelib.walk_to_peer(pos, dir2)
-- delete meta on peer tube
if cnt2 > 0 then
minetest.get_meta(pos):from_table(nil)
end
end
return cnt1 + cnt2
end
local function swap_node(pos, node_num, param2)
local node = minetest.get_node(pos)
node.name = "tubelib:tube"..node_num
node.param2 = param2
minetest.swap_node(pos, node)
end
local function is_connected(pos, dir)
if dir then
pos = get_tube_pos(pos, dir)
local dir1,dir2 = get_tube_dirs(pos)
-- return true if connected
dir = Turn180Deg[dir]
return dir == dir1 or dir == dir2
end
return false
end
local function is_tubelib_block(pos, dir)
if dir then
pos = get_tube_pos(pos, dir)
local dir1,dir2 = get_tube_dirs(pos)
-- return true if connected
dir = Turn180Deg[dir]
return dir == dir1 or dir == dir2
end
return false
end
local function update_next_tube(dir, pos)
-- test if tube is connected with neighbor tubes
local dir1, dir2 = get_tube_dirs(pos)
local conn1 = is_connected(pos, dir1)
local conn2 = is_connected(pos, dir2)
-- already connected or no tube arround?
if conn1 == conn2 then
return
end
if conn1 then
dir2 = Turn180Deg[dir]
else
dir1 = Turn180Deg[dir]
end
local node_num, param2 = get_tube_number_and_param2(dir1, dir2)
swap_node(pos, node_num, param2)
end
-- update new placed tube
local function update_tube(pos, dir)
local dir1 = nil
local dir2 = nil
-- search on all 6 pos for up to 2 tubes with open holes or
-- other tubelib compatible nodes
for dir = 1,6 do
if not dir1 and is_connected(pos, dir) then
dir1 = dir
elseif not dir1 and get_next_node(pos, dir) then
dir1 = dir
elseif not dir2 and is_connected(pos, dir) then
dir2 = dir
elseif not dir2 and get_next_node(pos, dir) then
dir2 = dir
end
end
dir1 = dir1 or dir
dir2 = dir2 or Turn180Deg[dir]
local node_num, param2 = get_tube_number_and_param2(dir1, dir2)
swap_node(pos, node_num, param2)
end
function tubelib.update_tubes(pos, dir)
-- Update all tubes arround the currently placed tube
update_next_tube(1, {x=pos.x , y=pos.y , z=pos.z+1})
update_next_tube(2, {x=pos.x+1, y=pos.y , z=pos.z })
update_next_tube(3, {x=pos.x , y=pos.y , z=pos.z-1})
update_next_tube(4, {x=pos.x-1, y=pos.y , z=pos.z })
update_next_tube(5, {x=pos.x , y=pos.y-1, z=pos.z })
update_next_tube(6, {x=pos.x , y=pos.y+1, z=pos.z })
-- Update the placed tube
update_tube(pos, dir)
return tubelib.delete_meta_data(pos, minetest.get_node(pos)) < MAX_TUBE_LENGTH
end

214
tubelib/tubes2.lua Normal file

@ -0,0 +1,214 @@
--[[
Tube Library
============
Copyright (C) 2017-2018 Joachim Stolberg
LGPLv2.1+
See LICENSE.txt for more information
History:
see init.lua
tubes2.lua: Node registration and API function to move items via tubes
]]--
-- Convertion of contact side to facedir
local SideToFacedir = {B=0, R=1, F=2, L=3, D=4, U=5}
-- Calculate the facedir to the other node, based on both node positions
local function dir_to_facedir(my_pos, other_pos)
if my_pos.z ~= other_pos.z then return my_pos.z - other_pos.z + 1 end
if my_pos.x ~= other_pos.x then return my_pos.x - other_pos.x + 2 end
if my_pos.y > other_pos.y then return 5 else return 4 end
end
local function remote_node(pos, dir)
local meta = minetest.get_meta(pos)
local cnt
-- legacy tube?
if meta:get_string("dest_pos2") ~= "" then
meta:from_table(nil)
end
-- data available
local dest_pos = meta:get_string("dest_pos")
if dest_pos ~= "" then
local npos = minetest.string_to_pos(dest_pos)
local facedir = meta:get_int("facedir")
return npos, facedir+1
end
-- determine data and store as meta
cnt, pos, dir = tubelib.walk_to_peer(pos, dir)
local pos1,_ = tubelib.get_next_tube(pos, dir)
meta:set_string("dest_pos", minetest.pos_to_string(pos1))
meta:set_int("facedir", dir - 1)
return pos1, dir
end
-- Determine neighbor position and own facedir to the node.
-- based on own pos and contact side 'B' - 'U'.
-- Function considers also tube connections.
function tubelib.get_neighbor_pos(pos, side)
local facedir = SideToFacedir[side]
local dir
if facedir < 4 then
local node = minetest.get_node(pos)
dir = ((facedir + node.param2) % 4) + 1
end
local npos, ndir = tubelib.get_next_tube(pos, dir)
local node = minetest.get_node(npos)
if tubelib.TubeNames[node.name] then
npos, ndir = remote_node(npos, ndir)
return npos, dir-1
end
return npos, facedir
end
-------------------------------------------------------------------------------
-- Node registration
-------------------------------------------------------------------------------
local DefNodeboxes = {
-- x1 y1 z1 x2 y2 z2
{ -1/4, -1/4, -1/4, 1/4, 1/4, 1/4 },
{ -1/4, -1/4, -1/4, 1/4, 1/4, 1/4 },
}
local DirCorrections = {
{3, 6}, {2, 5}, -- standard tubes
{3, 1}, {3, 2}, {3, 5}, -- knees from front to..
}
local SelectBoxes = {
{ -1/4, -1/4, -1/2, 1/4, 1/4, 1/2 },
{ -1/4, -1/2, -1/4, 1/4, 1/2, 1/4 },
{ -1/2, -1/4, -1/2, 1/4, 1/4, 1/4 },
{ -1/4, -1/2, -1/2, 1/4, 1/4, 1/4 },
{ -1/4, -1/4, -1/2, 1/4, 1/2, 1/4 },
}
local TilesData = {
-- up, down, right, left, back, front
{
"tubelib_tube.png^[transformR90",
"tubelib_tube.png^[transformR90",
"tubelib_tube.png",
"tubelib_tube.png",
"tubelib_hole.png",
"tubelib_hole.png",
},
{
"tubelib_hole.png",
"tubelib_hole.png",
"tubelib_tube.png^[transformR90",
"tubelib_tube.png^[transformR90",
"tubelib_tube.png^[transformR90",
"tubelib_tube.png^[transformR90",
},
{
"tubelib_knee.png^[transformR270",
"tubelib_knee.png^[transformR180",
"tubelib_knee2.png^[transformR270",
"tubelib_hole2.png^[transformR90",
"tubelib_knee2.png^[transformR90",
"tubelib_hole2.png^[transformR270",
},
{
"tubelib_knee2.png",
"tubelib_hole2.png^[transformR180",
"tubelib_knee.png^[transformR270",
"tubelib_knee.png",
"tubelib_knee2.png",
"tubelib_hole2.png",
},
{
"tubelib_hole2.png",
"tubelib_knee2.png^[transformR180",
"tubelib_knee.png^[transformR180",
"tubelib_knee.png^[transformR90",
"tubelib_knee2.png^[transformR180",
"tubelib_hole2.png^[transformR180",
},
}
for idx,pos in ipairs(DirCorrections) do
local node_box_data = table.copy(DefNodeboxes)
node_box_data[1][pos[1]] = node_box_data[1][pos[1]] * 2
node_box_data[2][pos[2]] = node_box_data[2][pos[2]] * 2
local tiles_data = TilesData[idx]
local hidden
if idx == 1 then
hidden = 0
else
hidden = 1
end
minetest.register_node("tubelib:tube"..idx, {
description = "Tubelib Tube",
tiles = tiles_data,
drawtype = "nodebox",
node_box = {
type = "fixed",
fixed = node_box_data,
},
selection_box = {
type = "fixed",
fixed = SelectBoxes[idx],
},
collision_box = {
type = "fixed",
fixed = SelectBoxes[idx],
},
after_place_node = function(pos, placer, itemstack, pointed_thing)
local res
local pitch = placer:get_look_pitch()
if pitch > 1 then
res = tubelib.update_tubes(pos, 6)
elseif pitch < -1 then
res = tubelib.update_tubes(pos, 5)
else
local dir = placer:get_look_dir()
local facedir = minetest.dir_to_facedir(dir)
res = tubelib.update_tubes(pos, facedir + 1)
end
if res == false then
tubelib.delete_meta_data(pos, minetest.get_node(pos))
minetest.remove_node(pos)
return itemstack
end
end,
after_dig_node = function(pos, oldnode, oldmetadata, digger)
tubelib.delete_meta_data(pos, oldnode)
end,
on_rotate = screwdriver.disallow,
paramtype2 = "facedir",
paramtype = "light",
sunlight_propagates = true,
is_ground_content = false,
groups = {choppy=2, cracky=3, stone=1, not_in_creative_inventory=hidden},
drop = "tubelib:tube1",
sounds = default.node_sound_wood_defaults(),
})
end
minetest.register_craft({
output = "tubelib:tube1 4",
recipe = {
{"default:steel_ingot", "", "group:wood"},
{"", "group:wood", ""},
{"group:wood", "", "default:tin_ingot"},
},
})