89 lines
2.5 KiB
Lua
89 lines
2.5 KiB
Lua
--[[
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=======================================================================
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Tubelib Biogas Machines Mod
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by Micu (c) 2018
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Copyright (C) 2018 Michal Cieslakiewicz
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Helper file for all machines that accept water through pipes from
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'pipeworks' mod.
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Note: due to pipeworks being WIP, the only valid water connection
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for now is from top or bottom - machine face orientation is apparently
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ignored by pipe logic, 'back' for pipes means always param2 = 0 (z+).
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License: LGPLv2.1+
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=======================================================================
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]]--
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-- all pipeworks objects that can carry water but are not junctions
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local pipeworks_straight_objects = {
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"pipeworks:straight_pipe_loaded",
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"pipeworks:entry_panel_loaded",
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"pipeworks:valve_on_loaded",
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"pipeworks:flow_sensor_loaded",
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}
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-- direction attributes for pipe connections
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local ctable = {
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["top"] = { dv = { x = 0, y = 1, z = 0 }, p2 = { 17 } },
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["bottom"] = { dv = { x = 0, y = -1, z = 0 }, p2 = { 17 } },
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["front"] = { dv = { x = 0, y = 0, z = -1 }, p2 = { 0, 2 } },
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["back"] = { dv = { x = 0, y = 0, z = 1 }, p2 = { 0, 2 } },
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["left"] = { dv = { x = -1, y = 0, z = 0 }, p2 = { 1, 3 } },
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["right"] = { dv = { x = 1, y = 0, z = 0 }, p2 = { 1, 3 } },
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}
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--[[
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------
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Public
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------
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]]--
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-- check if node is in array
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function biogasmachines.is_member_of(name, array)
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for _, n in ipairs(array) do
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if n == name then return true end
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end
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return false
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end
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-- Check if machine is connected to pipe network and water flows into machine
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-- Parameters: node position, node object (optional)
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-- Returns: true if water is flowing into device node
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function biogasmachines.is_pipe_with_water(pos, opt_node)
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if not minetest.get_modpath("pipeworks") then
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return false
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end
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local node = opt_node
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if not node then
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node = minetest.get_node_or_nil(pos)
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if not node then return false end
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end
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local node_def = minetest.registered_nodes[node.name]
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if not node_def then return false end
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local pipe_con = node_def.pipe_connections
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if not pipe_con then return false end
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for d, v in pairs(pipe_con) do
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if v then
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local d_node = minetest.get_node_or_nil(
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vector.add(pos, ctable[d].dv))
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if d_node and string.match(d_node.name,
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"^pipeworks:pipe_.*_loaded") then
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return true
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end
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if d_node and biogasmachines.is_member_of(
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d_node.param2, ctable[d].p2)
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and biogasmachines.is_member_of(
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d_node.name, pipeworks_straight_objects)
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then
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return true
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end
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end
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end
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return false
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end
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