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