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424
hologram.lua
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424
hologram.lua
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local utils = ...
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local S = utils.S
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if utils.digilines_supported then
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local hologram_block =
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{
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black = {
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node = "lwcomponents:hologram_black",
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image = "lwhologram_black.png",
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color = { a = 128, r = 0, g = 0, b = 0 } },
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orange = {
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node = "lwcomponents:hologram_orange",
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image = "lwhologram_orange.png",
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color = { a = 128, r = 255, g = 128, b = 0 } },
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magenta = {
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node = "lwcomponents:hologram_magenta",
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image = "lwhologram_magenta.png",
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color = { a = 128, r = 255, g = 0, b = 255 } },
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sky = {
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node = "lwcomponents:hologram_sky",
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image = "lwhologram_sky.png",
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color = { a = 128, r = 0, g = 128, b = 255 } },
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yellow = {
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node = "lwcomponents:hologram_yellow",
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image = "lwhologram_yellow.png",
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color = { a = 128, r = 255, g = 255, b = 0 } },
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pink = {
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node = "lwcomponents:hologram_pink",
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image = "lwhologram_pink.png",
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color = { a = 128, r = 255, g = 128, b = 128 } },
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cyan = {
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node = "lwcomponents:hologram_cyan",
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image = "lwhologram_cyan.png",
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color = { a = 128, r = 0, g = 255, b = 255 } },
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gray = {
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node = "lwcomponents:hologram_gray",
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image = "lwhologram_gray.png",
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color = { a = 128, r = 128, g = 128, b = 128 } },
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silver = {
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node = "lwcomponents:hologram_silver",
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image = "lwhologram_silver.png",
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color = { a = 128, r = 192, g = 192, b = 192 } },
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red = {
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node = "lwcomponents:hologram_red",
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image = "lwhologram_red.png",
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color = { a = 128, r = 255, g = 0, b = 0 } },
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green = {
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node = "lwcomponents:hologram_green",
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image = "lwhologram_green.png",
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color = { a = 128, r = 0, g = 128, b = 0 } },
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blue = {
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node = "lwcomponents:hologram_blue",
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image = "lwhologram_blue.png",
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color = { a = 128, r = 0, g = 0, b = 255 } },
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brown = {
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node = "lwcomponents:hologram_brown",
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image = "lwhologram_brown.png",
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color = { a = 128, r = 128, g = 64, b = 0 } },
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lime = {
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node = "lwcomponents:hologram_lime",
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image = "lwhologram_lime.png",
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color = { a = 128, r = 0, g = 255, b = 0 } },
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purple = {
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node = "lwcomponents:hologram_purple",
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image = "lwhologram_purple.png",
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color = { a = 128, r = 128, g = 0, b = 128 } },
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white = {
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node = "lwcomponents:hologram_white",
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image = "lwhologram_white.png",
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color = { a = 128, r = 255, g = 255, b = 255 } },
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}
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local function rotate_to_dir (center, param2, point)
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local base = vector.subtract (point, center)
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if param2 == 1 then
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base = vector.rotate (base, { x = 0, y = (math.pi * 1.5), z = 0 })
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elseif param2 == 2 then
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base = vector.rotate (base, { x = 0, y = math.pi, z = 0 })
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elseif param2 == 3 then
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base = vector.rotate (base, { x = 0, y = (math.pi * 0.5), z = 0 })
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end
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return vector.add (base, center)
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end
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local function draw_map (pos, map)
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local meta = minetest.get_meta (pos)
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local holonode = minetest.get_node (pos)
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if meta and holonode and type (map) == "table" then
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local id = meta:get_int ("block_id")
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for y = 1, 15 do
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local layer = (type (map[y]) == "table" and map[y]) or { }
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for x = 1, 15 do
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local line = (type (layer[x]) == "table" and layer[x]) or { }
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for z = 1, 15 do
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local map_point = { x = z + pos.x - 8, y = y + pos.y + 1, z = (16 - x) + pos.z - 8 }
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local holopos = rotate_to_dir (pos, holonode.param2, map_point)
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local node = utils.get_far_node (holopos)
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local draw = false
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if node and node.name ~= "air" then
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if node.name:sub (1, 22) == "lwcomponents:hologram_" then
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local nodemeta = minetest.get_meta (holopos)
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if nodemeta and nodemeta:get_int ("block_id") == id then
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draw = true
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end
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end
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else
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draw = true
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end
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if draw then
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local holonode = hologram_block[line[z]]
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if node then
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utils.destroy_node (holopos)
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end
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if holonode then
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minetest.set_node (holopos, { name = holonode.node })
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local nodemeta = minetest.get_meta (holopos)
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if nodemeta then
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nodemeta:set_int ("block_id", id)
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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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end
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end
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local function clear_map (pos)
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draw_map (pos, { })
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end
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local function on_destruct (pos)
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clear_map (pos)
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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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local id = math.random (1000000)
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meta:set_string ("formspec", spec)
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meta:set_int ("block_id", id)
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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", "Hologram (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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clear_map (pos)
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minetest.remove_node (pos)
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else -- intensity < 1.0
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clear_map (pos)
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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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preserve_metadata (pos, node, meta, { stack })
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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 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] == "clear" then
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clear_map (pos)
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end
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elseif type (msg) == "table" then
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draw_map (pos, msg)
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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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minetest.register_node("lwcomponents:hologram", {
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description = S("Hologram"),
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tiles = { "lwhologram.png", "lwhologram.png", "lwhologram.png",
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"lwhologram.png", "lwhologram.png", "lwhologram_face.png"},
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is_ground_content = false,
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groups = { cracky = 3 },
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sounds = default.node_sound_stone_defaults (),
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paramtype = "light",
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param1 = 0,
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paramtype2 = "facedir",
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param2 = 1,
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floodable = false,
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_digistuff_channelcopier_fieldname = "channel",
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digiline = digilines_support (),
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on_destruct = on_destruct,
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after_place_node = after_place_node,
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on_receive_fields = on_receive_fields,
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on_blast = on_blast,
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can_dig = can_dig,
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on_rightclick = on_rightclick
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})
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minetest.register_node("lwcomponents:hologram_locked", {
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description = S("Hologram (locked)"),
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tiles = { "lwhologram.png", "lwhologram.png", "lwhologram.png",
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"lwhologram.png", "lwhologram.png", "lwhologram_face.png"},
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is_ground_content = false,
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groups = { cracky = 3 },
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sounds = default.node_sound_stone_defaults (),
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paramtype = "light",
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param1 = 0,
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paramtype2 = "facedir",
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param2 = 1,
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floodable = false,
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_digistuff_channelcopier_fieldname = "channel",
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digiline = digilines_support (),
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on_destruct = on_destruct,
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after_place_node = after_place_node_locked,
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on_receive_fields = on_receive_fields,
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on_blast = on_blast,
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can_dig = can_dig,
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on_rightclick = on_rightclick
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})
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local function register_hologram_block (block)
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local bc = hologram_block[block]
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minetest.register_node(bc.node, {
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description = S("Hologram "..block),
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tiles = { bc.image },
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drawtype = "glasslike",
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light_source = 7,
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use_texture_alpha = "blend",
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sunlight_propagates = true,
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walkable = false,
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pointable = false,
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diggable = false,
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climbable = false,
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buildable_to = true,
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floodable = true,
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is_ground_content = false,
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groups = { not_in_creative_inventory = 1 },
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paramtype = "light",
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param1 = 255,
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post_effect_color = bc.color,
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})
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end
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register_hologram_block ("black")
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register_hologram_block ("orange")
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register_hologram_block ("magenta")
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register_hologram_block ("sky")
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register_hologram_block ("yellow")
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register_hologram_block ("pink")
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register_hologram_block ("cyan")
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register_hologram_block ("gray")
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register_hologram_block ("silver")
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register_hologram_block ("red")
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register_hologram_block ("green")
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register_hologram_block ("blue")
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register_hologram_block ("brown")
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register_hologram_block ("lime")
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register_hologram_block ("purple")
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register_hologram_block ("white")
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end -- utils.digilines_supported
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