138 lines
4 KiB
Lua
138 lines
4 KiB
Lua
-- autorouting for pneumatic tubes
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local function is_tube(nodename)
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return pipeworks.table_contains(pipeworks.tubenodes, nodename)
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end
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--a function for determining which side of the node we are on
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local function nodeside(node, tubedir)
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if node.param2 < 0 or node.param2 > 23 then
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node.param2 = 0
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end
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local backdir = minetest.facedir_to_dir(node.param2)
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local back = pipeworks.vector_dot(backdir, tubedir)
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if back == 1 then
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return "back"
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elseif back == -1 then
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return "front"
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end
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local topdir = pipeworks.facedir_to_top_dir(node.param2)
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local top = pipeworks.vector_dot(topdir, tubedir)
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if top == 1 then
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return "top"
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elseif top == -1 then
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return "bottom"
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end
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local rightdir = pipeworks.facedir_to_right_dir(node.param2)
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local right = pipeworks.vector_dot(rightdir, tubedir)
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if right == 1 then
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return "right"
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else
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return "left"
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end
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end
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local vts = {0, 3, 1, 4, 2, 5}
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local tube_table = {[0] = 1, 2, 2, 4, 2, 4, 4, 5, 2, 3, 4, 6, 4, 6, 5, 7, 2, 4, 3, 6, 4, 5, 6, 7, 4, 6, 6, 8, 5, 7, 7, 9, 2, 4, 4, 5, 3, 6, 6, 7, 4, 6, 5, 7, 6, 8, 7, 9, 4, 5, 6, 7, 6, 7, 8, 9, 5, 7, 7, 9, 7, 9, 9, 10}
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local tube_table_facedirs = {[0] = 0, 0, 5, 0, 3, 4, 3, 0, 2, 0, 2, 0, 6, 4, 3, 0, 7, 12, 5, 12, 7, 4, 5, 5, 18, 20, 16, 0, 7, 4, 7, 0, 1, 8, 1, 1, 1, 13, 1, 1, 10, 8, 2, 2, 17, 4, 3, 6, 9, 9, 9, 9, 21, 13, 1, 1, 10, 10, 11, 2, 19, 4, 3, 0}
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local function tube_autoroute(pos)
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local active = {0, 0, 0, 0, 0, 0}
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local nctr = minetest.get_node(pos)
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if not is_tube(nctr.name) then return end
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local adjustments = {
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{x = -1, y = 0, z = 0},
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{x = 1, y = 0, z = 0},
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{x = 0, y = -1, z = 0},
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{x = 0, y = 1, z = 0},
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{x = 0, y = 0, z = -1},
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{x = 0, y = 0, z = 1}
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}
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-- xm = 1, xp = 2, ym = 3, yp = 4, zm = 5, zp = 6
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local positions = {}
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local nodes = {}
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for i, adj in ipairs(adjustments) do
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positions[i] = vector.add(pos, adj)
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nodes[i] = minetest.get_node(positions[i])
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end
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for i, node in ipairs(nodes) do
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local idef = minetest.registered_nodes[node.name]
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-- handle the tubes themselves
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if is_tube(node.name) then
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active[i] = 1
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-- handle new style connectors
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elseif idef and idef.tube and idef.tube.connect_sides then
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local dir = adjustments[i]
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if idef.tube.connect_sides[nodeside(node, vector.multiply(dir, -1))] then
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active[i] = 1
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end
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end
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end
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-- all sides checked, now figure which tube to use.
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local nodedef = minetest.registered_nodes[nctr.name]
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local basename = nodedef.basename
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if nodedef.style == "old" then
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local nsurround = ""
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for i, n in ipairs(active) do
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nsurround = nsurround..n
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end
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nctr.name = basename.."_"..nsurround
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elseif nodedef.style == "6d" then
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local s = 0
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for i, n in ipairs(active) do
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if n == 1 then
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s = s + 2^vts[i]
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end
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end
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nctr.name = basename.."_"..tube_table[s]
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nctr.param2 = tube_table_facedirs[s]
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end
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minetest.swap_node(pos, nctr)
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end
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function pipeworks.scan_for_tube_objects(pos)
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for side = 0, 6 do
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tube_autoroute(vector.add(pos, pipeworks.directions.side_to_dir(side)))
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end
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end
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function pipeworks.after_place(pos)
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pipeworks.scan_for_tube_objects(pos)
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end
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function pipeworks.after_dig(pos)
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pipeworks.scan_for_tube_objects(pos)
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end
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-- Screwdriver calls this function before rotating a node.
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-- However, connections must be updated *after* the node is rotated
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-- So, this function does the rotation itself and returns `true`.
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-- (Note: screwdriver already checks for protected areas.)
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-- This should only be used for tubes that don't autoconnect.
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-- (For example, one-way tubes.)
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-- Autoconnecting tubes will just revert back to their original state
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-- when they are updated.
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function pipeworks.on_rotate(pos, node, user, mode, new_param2)
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node.param2 = new_param2
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minetest.swap_node(pos, node)
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pipeworks.scan_for_tube_objects(pos)
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return true
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end
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if minetest.get_modpath("mesecons_mvps") then
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mesecon.register_on_mvps_move(function(moved_nodes)
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for _, n in ipairs(moved_nodes) do
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pipeworks.scan_for_tube_objects(n.pos)
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pipeworks.scan_for_tube_objects(n.oldpos)
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end
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end)
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end
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