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453
lwcomponents/fan.lua
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453
lwcomponents/fan.lua
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local utils = ...
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local S = utils.S
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if utils.digilines_supported or utils.mesecon_supported then
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local fan_interval = 0.2
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local fan_force = 15.0
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local function direction_vector (node)
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local axis = math.floor (node.param2 / 4)
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local rotate = node.param2 % 4
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local vec = { x = 0, y = 0, z = 0 }
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if rotate == 0 then
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vec = { x = 0, y = 0, z = -1 }
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elseif rotate == 1 then
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vec = { x = -1, y = 0, z = 0 }
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elseif rotate == 2 then
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vec = { x = 0, y = 0, z = 1 }
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elseif rotate == 3 then
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vec = { x = 1, y = 0, z = 0 }
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end
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if axis == 1 then
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vec = vector.rotate (vec, { x = math.pi / -2, y = 0, z = 0 })
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elseif axis == 2 then
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vec = vector.rotate (vec, { x = math.pi / 2, y = 0, z = 0 })
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elseif axis == 3 then
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vec = vector.rotate (vec, { x = 0, y = 0, z = math.pi / 2 })
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elseif axis == 4 then
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vec = vector.rotate (vec, { x = 0, y = 0, z = math.pi / -2 })
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elseif axis == 5 then
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vec = vector.rotate (vec, { x = math.pi, y = 0, z = 0 })
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end
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return vec
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end
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local function blow (pos)
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local node = minetest.get_node (pos)
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local dir = direction_vector (node)
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local reach = 5
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for r = 1, reach, 1 do
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local tpos = vector.add (pos, vector.multiply (dir, r))
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local tnode = minetest.get_node_or_nil (tpos)
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if tnode and tnode.name ~= "air" then
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local def = utils.find_item_def (tnode.name)
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if def and def.walkable then
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return
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end
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end
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local object = minetest.get_objects_inside_radius (tpos, 1.5)
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local vel = vector.multiply (dir, (dir.y > 0 and fan_force / 2) or fan_force)
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for i = 1, #object do
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if object[i].add_velocity then
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local opos = object[i]:get_pos ()
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if opos.x >= (tpos.x - 0.5) and opos.x <= (tpos.x + 0.5) and
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opos.z >= (tpos.z - 0.5) and opos.z <= (tpos.z + 0.5) and
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opos.y >= (tpos.y - 0.5) and opos.y <= (tpos.y + 0.5) then
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if object[i].get_luaentity and object[i]:get_luaentity () and
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object[i]:get_luaentity ().name and
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object[i]:get_luaentity ().name == "__builtin:item" then
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object[i]:add_velocity (vector.multiply (vel, 5))
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else
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object[i]:add_velocity (vel)
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end
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end
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end
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end
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end
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end
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local function fan_off (pos)
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local node = minetest.get_node (pos)
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if node then
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if node.name == "lwcomponents:fan_on" then
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node.name = "lwcomponents:fan"
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minetest.get_node_timer (pos):stop ()
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minetest.swap_node (pos, node)
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elseif node.name == "lwcomponents:fan_locked_on" then
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node.name = "lwcomponents:fan_locked"
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minetest.get_node_timer (pos):stop ()
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minetest.swap_node (pos, node)
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end
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end
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end
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local function fan_on (pos)
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local node = minetest.get_node (pos)
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if node then
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if node.name == "lwcomponents:fan" then
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node.name = "lwcomponents:fan_on"
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minetest.swap_node (pos, node)
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minetest.get_node_timer (pos):start (fan_interval)
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elseif node.name == "lwcomponents:fan_locked" then
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node.name = "lwcomponents:fan_locked_on"
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minetest.swap_node (pos, node)
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minetest.get_node_timer (pos):start (fan_interval)
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end
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end
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end
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local function on_place (itemstack, placer, pointed_thing)
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local param2 = 0
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if placer and placer:is_player () then
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param2 = minetest.dir_to_facedir (placer:get_look_dir (), true)
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elseif pointed_thing and pointed_thing.type == "node" then
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param2 = minetest.dir_to_facedir (vector.subtract (pointed_thing.under, pointed_thing.above), true)
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end
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return minetest.item_place (itemstack, placer, pointed_thing, param2)
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end
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local function after_place_node (pos, placer, itemstack, pointed_thing)
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local meta = minetest.get_meta (pos)
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local spec =
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"size[7.5,3]"..
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"field[1,1;6,2;channel;Channel;${channel}]"..
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"button_exit[2.5,2;3,1;submit;Set]"
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meta:set_string ("formspec", spec)
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-- If return true no item is taken from itemstack
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return false
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end
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local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
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after_place_node (pos, placer, itemstack, pointed_thing)
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if placer and placer:is_player () then
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local meta = minetest.get_meta (pos)
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meta:set_string ("owner", placer:get_player_name ())
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meta:set_string ("infotext", "Fan (owned by "..placer:get_player_name ()..")")
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end
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-- If return true no item is taken from itemstack
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return false
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end
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local function on_receive_fields (pos, formname, fields, sender)
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if not utils.can_interact_with_node (pos, sender) 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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if fields.submit then
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meta:set_string ("channel", fields.channel)
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end
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end
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local function on_blast (pos, intensity)
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local meta = minetest.get_meta (pos)
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if meta then
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if intensity >= 1.0 then
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minetest.remove_node (pos)
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else -- intensity < 1.0
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local node = minetest.get_node_or_nil (pos)
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if node then
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local items = minetest.get_node_drops (node, nil)
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if items and #items > 0 then
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local stack = ItemStack (items[1])
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if stack then
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utils.item_drop (stack, nil, pos)
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minetest.remove_node (pos)
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end
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end
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end
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end
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end
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end
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local function can_dig (pos, player)
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if not utils.can_interact_with_node (pos, player) then
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return false
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end
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return true
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end
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local function on_rightclick (pos, node, clicker, itemstack, pointed_thing)
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if not utils.can_interact_with_node (pos, clicker) then
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if clicker and clicker:is_player () then
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local owner = "<unknown>"
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local meta = minetest.get_meta (pos)
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if meta then
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owner = meta:get_string ("owner")
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end
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local spec =
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"formspec_version[3]"..
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"size[8.0,4.0,false]"..
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"label[1.0,1.0;Owned by "..minetest.formspec_escape (owner).."]"..
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"button_exit[3.0,2.0;2.0,1.0;close;Close]"
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minetest.show_formspec (clicker:get_player_name (),
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"lwcomponents:component_privately_owned",
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spec)
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end
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end
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return itemstack
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end
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local function on_timer (pos, elapsed)
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blow (pos)
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return true
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end
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local function digilines_support ()
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if utils.digilines_supported then
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return
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{
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wire =
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{
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rules = utils.digilines_default_rules,
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},
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effector =
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{
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action = function (pos, node, channel, msg)
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local meta = minetest.get_meta(pos)
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if meta then
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local this_channel = meta:get_string ("channel")
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if this_channel ~= "" and this_channel == channel then
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if type (msg) == "string" then
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local m = { }
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for w in string.gmatch(msg, "[^%s]+") do
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m[#m + 1] = w
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end
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if m[1] == "start" then
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fan_on (pos)
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elseif m[1] == "stop" then
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fan_off (pos)
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end
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end
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end
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end
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end,
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}
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}
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end
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return nil
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end
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local function mesecon_support ()
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if utils.mesecon_supported then
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return
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{
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effector =
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{
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rules = utils.mesecon_default_rules,
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action_on = function (pos, node)
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-- do something to turn the effector on
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fan_on (pos)
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end,
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action_off = function (pos, node)
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-- do something to turn the effector off
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fan_off (pos)
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end,
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}
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}
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end
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return nil
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end
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minetest.register_node("lwcomponents:fan", {
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description = S("Fan"),
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tiles = { "lwfan.png", "lwfan.png", "lwfan.png",
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"lwfan.png", "lwfan.png", "lwfan_face.png"},
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is_ground_content = false,
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groups = { cracky = 3, wires_connect = 1 },
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--sounds = default.node_sound_stone_defaults (),
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paramtype = "none",
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param1 = 0,
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paramtype2 = "facedir",
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param2 = 0,
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floodable = false,
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drop = "lwcomponents:fan",
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_digistuff_channelcopier_fieldname = "channel",
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mesecons = mesecon_support (),
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digiline = digilines_support (),
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on_place = on_place,
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on_receive_fields = on_receive_fields,
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can_dig = can_dig,
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after_place_node = after_place_node,
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on_blast = on_blast,
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on_rightclick = on_rightclick,
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})
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minetest.register_node("lwcomponents:fan_locked", {
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description = S("Fan (locked)"),
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tiles = { "lwfan.png", "lwfan.png", "lwfan.png",
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"lwfan.png", "lwfan.png", "lwfan_face.png"},
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is_ground_content = false,
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groups = { cracky = 3, wires_connect = 1 },
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--sounds = default.node_sound_stone_defaults (),
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paramtype = "none",
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param1 = 0,
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paramtype2 = "facedir",
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param2 = 0,
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floodable = false,
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drop = "lwcomponents:fan_locked",
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_digistuff_channelcopier_fieldname = "channel",
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mesecons = mesecon_support (),
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digiline = digilines_support (),
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on_place = on_place,
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on_receive_fields = on_receive_fields,
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can_dig = can_dig,
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after_place_node = after_place_node_locked,
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on_blast = on_blast,
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on_rightclick = on_rightclick,
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})
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minetest.register_node("lwcomponents:fan_on", {
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description = S("Fan"),
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tiles = { "lwfan.png", "lwfan.png", "lwfan.png",
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"lwfan.png", "lwfan.png", "lwfan_face_on.png"},
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is_ground_content = false,
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groups = { cracky = 3, not_in_creative_inventory = 1, wires_connect = 1 },
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--sounds = default.node_sound_stone_defaults (),
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paramtype = "none",
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param1 = 0,
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paramtype2 = "facedir",
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param2 = 0,
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floodable = false,
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drop = "lwcomponents:fan",
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_digistuff_channelcopier_fieldname = "channel",
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mesecons = mesecon_support (),
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digiline = digilines_support (),
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on_place = on_place,
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on_receive_fields = on_receive_fields,
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can_dig = can_dig,
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after_place_node = after_place_node,
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on_blast = on_blast,
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on_timer = on_timer,
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on_rightclick = on_rightclick,
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})
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minetest.register_node("lwcomponents:fan_locked_on", {
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description = S("Fan (locked)"),
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tiles = { "lwfan.png", "lwfan.png", "lwfan.png",
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"lwfan.png", "lwfan.png", "lwfan_face_on.png"},
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is_ground_content = false,
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groups = { cracky = 3, not_in_creative_inventory = 1, wires_connect = 1 },
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--sounds = default.node_sound_stone_defaults (),
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paramtype = "none",
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param1 = 0,
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paramtype2 = "facedir",
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param2 = 0,
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floodable = false,
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drop = "lwcomponents:fan_locked",
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_digistuff_channelcopier_fieldname = "channel",
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mesecons = mesecon_support (),
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digiline = digilines_support (),
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on_place = on_place,
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on_receive_fields = on_receive_fields,
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can_dig = can_dig,
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after_place_node = after_place_node_locked,
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on_blast = on_blast,
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on_timer = on_timer,
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on_rightclick = on_rightclick,
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})
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end -- utils.digilines_supported or utils.mesecon_supported
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