108 lines
3.7 KiB
Lua
108 lines
3.7 KiB
Lua
-- Object detector
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-- Detects players in a certain radius
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-- The radius can be specified in mesecons/settings.lua
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local object_detector_make_formspec = function (pos)
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local meta = minetest.env:get_meta(pos)
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meta:set_string("formspec", "size[9,2.5]" ..
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"field[0.3, 0;9,2;scanname;Name of player to scan for (empty for any):;${scanname}]"..
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"field[0.3,1.5;4,2;digiline_channel;Digiline Channel (optional):;${digiline_channel}]")
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end
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local object_detector_on_receive_fields = function (pos, formname, fields)
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local meta = minetest.env:get_meta(pos)
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meta:set_string("scanname", fields.scanname)
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meta:set_string("digiline_channel", fields.digiline_channel)
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object_detector_make_formspec(pos)
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end
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-- returns true if player was found, false if not
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local object_detector_scan = function (pos)
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local objs = minetest.env:get_objects_inside_radius(pos, OBJECT_DETECTOR_RADIUS)
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for k, obj in pairs(objs) do
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local isname = obj:get_player_name() -- "" is returned if it is not a player; "" ~= nil!
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local scanname = minetest.env:get_meta(pos):get_string("scanname")
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if (isname == scanname and isname ~= "") or (isname ~= "" and scanname == "") then -- player with scanname found or not scanname specified
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return true
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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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-- set player name when receiving a digiline signal on a specific channel
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object_detector_digiline = {
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effector = {
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action = function (pos, node, channel, msg)
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local meta = minetest.env:get_meta(pos)
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local active_channel = meta:get_string("digiline_channel")
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if channel == active_channel then
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meta:set_string("scanname", msg)
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object_detector_make_formspec(pos)
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end
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end,
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}
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}
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minetest.register_node("mesecons_detector:object_detector_off", {
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tiles = {"default_steel_block.png", "default_steel_block.png", "jeija_object_detector_off.png", "jeija_object_detector_off.png", "jeija_object_detector_off.png", "jeija_object_detector_off.png"},
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paramtype = "light",
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walkable = true,
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groups = {cracky=3},
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description="Player Detector",
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mesecons = {receptor = {
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state = mesecon.state.off
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}},
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on_construct = object_detector_make_formspec,
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on_receive_fields = object_detector_on_receive_fields,
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sounds = default.node_sound_stone_defaults(),
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digiline = object_detector_digiline
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})
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minetest.register_node("mesecons_detector:object_detector_on", {
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tiles = {"default_steel_block.png", "default_steel_block.png", "jeija_object_detector_on.png", "jeija_object_detector_on.png", "jeija_object_detector_on.png", "jeija_object_detector_on.png"},
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paramtype = "light",
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walkable = true,
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groups = {cracky=3,not_in_creative_inventory=1},
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drop = 'mesecons_detector:object_detector_off',
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mesecons = {receptor = {
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state = mesecon.state.on
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}},
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on_construct = object_detector_make_formspec,
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on_receive_fields = object_detector_on_receive_fields,
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sounds = default.node_sound_stone_defaults(),
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digiline = object_detector_digiline
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})
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minetest.register_craft({
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output = 'mesecons_detector:object_detector_off',
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recipe = {
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{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
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{"default:steel_ingot", "mesecons_luacontroller:luacontroller0000", "default:steel_ingot"},
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{"default:steel_ingot", "group:mesecon_conductor_craftable", "default:steel_ingot"},
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}
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})
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minetest.register_abm(
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{nodenames = {"mesecons_detector:object_detector_off"},
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interval = 1.0,
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chance = 1,
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action = function(pos)
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if object_detector_scan(pos) then
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mesecon:swap_node(pos, "mesecons_detector:object_detector_on")
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mesecon:receptor_on(pos)
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end
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end,
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})
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minetest.register_abm(
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{nodenames = {"mesecons_detector:object_detector_on"},
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interval = 1.0,
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chance = 1,
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action = function(pos)
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if not object_detector_scan(pos) then
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mesecon:swap_node(pos, "mesecons_detector:object_detector_off")
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mesecon:receptor_off(pos)
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end
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end,
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})
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