2020-06-14 20:14:52 +02:00
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2020-06-15 08:38:49 +02:00
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-- returns a node and loads the area if needed
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function digibuilder.get_node(pos)
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local node = minetest.get_node_or_nil(pos)
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if node == nil then
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minetest.get_voxel_manip(pos, pos)
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node = minetest.get_node_or_nil(pos)
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end
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return node
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end
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function digibuilder.digiline_effector(pos, _, channel, msg)
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2020-06-14 20:14:52 +02:00
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local msgt = type(msg)
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if msgt ~= "table" then
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return
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end
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local meta = minetest.get_meta(pos)
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local set_channel = meta:get_string("channel")
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2020-06-15 08:38:49 +02:00
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if channel ~= set_channel then
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return
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2020-06-14 20:14:52 +02:00
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end
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2020-06-15 08:38:49 +02:00
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-- validate position
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local owner = meta:get_string("owner")
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if not digibuilder.digiline_validate_pos(pos, owner, set_channel, msg) then
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2020-06-14 20:14:52 +02:00
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return
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end
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2020-06-15 08:38:49 +02:00
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if msg.command == "getnode" then
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2020-06-16 07:47:44 +02:00
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-- calculate absolute position
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2020-06-15 08:38:49 +02:00
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local absolute_pos = vector.add(pos, msg.pos)
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local node = digibuilder.get_node(absolute_pos)
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-- get and validate node definition
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local node_def = minetest.registered_items[node.name]
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if not node_def then
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digilines.receptor_send(pos, digibuilder.digiline_rules, set_channel, {
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pos = msg.pos,
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error = true,
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message = "target node is unknown!"
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})
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return
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end
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-- assemble result
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local result = {
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pos = msg.pos,
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name = node.name
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}
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if node_def.paramtype2 == "facedir" then
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-- add param2 info
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result.param2 = node.param2
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end
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digilines.receptor_send(pos, digibuilder.digiline_rules, set_channel, result)
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elseif msg.command == "setnode" then
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2020-06-16 07:47:44 +02:00
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-- calculate absolute position
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2020-06-15 08:38:49 +02:00
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local absolute_pos = vector.add(pos, msg.pos)
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local node = digibuilder.get_node(absolute_pos)
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-- get and validate node definition
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local node_def = minetest.registered_items[node.name]
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if not node_def then
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digilines.receptor_send(pos, digibuilder.digiline_rules, set_channel, {
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pos = msg.pos,
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error = true,
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message = "target node is unknown!"
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})
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return
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end
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2020-06-14 20:14:52 +02:00
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2020-06-15 08:38:49 +02:00
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-- check if node is buildable to
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if not node_def.buildable_to then
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digilines.receptor_send(pos, digibuilder.digiline_rules, set_channel, {
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pos = msg.pos,
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error = true,
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message = "Can't build on that position!"
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})
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return
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end
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2020-06-14 20:14:52 +02:00
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2020-06-15 08:38:49 +02:00
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-- check if node is in inventory
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local inv = meta:get_inventory()
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if not inv:contains_item("main", msg.name) then
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digilines.receptor_send(pos, digibuilder.digiline_rules, set_channel, {
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pos = msg.pos,
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error = true,
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message = "Item not in inventory: " .. msg.name
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})
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return
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end
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-- get and validate place node definition
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local place_node_def = minetest.registered_items[msg.name]
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if not place_node_def then
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digilines.receptor_send(pos, digibuilder.digiline_rules, set_channel, {
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pos = msg.pos,
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error = true,
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message = "place node is unknown: '" .. msg.name .. "'"
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})
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return
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end
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-- remove item
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inv:remove_item("main", msg.name)
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local param2 = tonumber(msg.param2)
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local enable_param2 = place_node_def.paramtype2 == "facedir" and param2 and param2 > 0 and param2 <= 255
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local place_node = {
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name = msg.name
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}
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if enable_param2 then
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-- place with param2 info
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place_node.param2 = param2
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end
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-- place node inworld
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minetest.place_node(absolute_pos, place_node)
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if enable_param2 then
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-- add param2 info
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minetest.swap_node(absolute_pos, place_node)
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end
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digilines.receptor_send(pos, digibuilder.digiline_rules, set_channel, {
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pos = msg.pos,
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name = place_node.name,
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param2 = place_node.param2,
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success = true,
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})
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end
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end
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