306 lines
8.7 KiB
Lua
306 lines
8.7 KiB
Lua
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-- Font: 04.jp.org
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-- load characters map
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local chars_file = io.open(minetest.get_modpath("signs").."/characters", "r")
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local charmap = {}
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local max_chars = 16
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if not chars_file then
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print("[signs] E: character map file not found")
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else
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while true do
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local char = chars_file:read("*l")
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if char == nil then
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break
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end
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local img = chars_file:read("*l")
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chars_file:read("*l")
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charmap[char] = img
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end
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end
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local signs = {
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{delta = {x = 0, y = 0, z = 0.399}, yaw = 0},
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{delta = {x = 0.399, y = 0, z = 0}, yaw = math.pi / -2},
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{delta = {x = 0, y = 0, z = -0.399}, yaw = math.pi},
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{delta = {x = -0.399, y = 0, z = 0}, yaw = math.pi / 2},
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}
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local signs_yard = {
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{delta = {x = 0, y = 0, z = -0.05}, yaw = 0},
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{delta = {x = -0.05, y = 0, z = 0}, yaw = math.pi / -2},
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{delta = {x = 0, y = 0, z = 0.05}, yaw = math.pi},
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{delta = {x = 0.05, y = 0, z = 0}, yaw = math.pi / 2},
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}
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local sign_groups = {choppy=2, dig_immediate=2}
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local construct_sign = function(pos)
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local meta = minetest.env:get_meta(pos)
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meta:set_string("formspec", "field[text;;${text}]")
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meta:set_string("infotext", "")
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end
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local destruct_sign = function(pos)
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local objects = minetest.env:get_objects_inside_radius(pos, 0.5)
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for _, v in ipairs(objects) do
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if v:get_entity_name() == "signs:text" then
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v:remove()
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end
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end
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end
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local update_sign = function(pos, fields, sender)
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local meta = minetest.env:get_meta(pos)
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local owner = meta:get_string("owner")
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meta:set_string("infotext", "")
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local text = meta:get_string("text")
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if fields and sender:get_player_name() == owner or text == "" and fields then
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meta:set_string("text", fields.text)
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meta:set_string("owner", sender:get_player_name() or "")
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end
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text = meta:get_string("text")
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local objects = minetest.env:get_objects_inside_radius(pos, 0.5)
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for _, v in ipairs(objects) do
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if v:get_entity_name() == "signs:text" then
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v:set_properties({textures={generate_texture(create_lines(text))}})
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return
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end
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end
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-- if there is no entity
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local sign_info
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if minetest.env:get_node(pos).name == "signs:sign_yard" then
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sign_info = signs_yard[minetest.env:get_node(pos).param2 + 1]
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elseif minetest.env:get_node(pos).name == "signs:sign_wall" then
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sign_info = signs[minetest.env:get_node(pos).param2 + 1]
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end
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if sign_info == nil then
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return
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end
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local text = minetest.env:add_entity({x = pos.x + sign_info.delta.x,
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y = pos.y + sign_info.delta.y,
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z = pos.z + sign_info.delta.z}, "signs:text")
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text:setyaw(sign_info.yaw)
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end
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minetest.register_node("signs:sign_wall", {
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description = "Sign",
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inventory_image = "default_sign_wall.png",
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walkable = false,
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wield_image = "default_sign_wall.png",
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node_placement_prediction = "",
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paramtype = "light",
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sunlight_propagates = true,
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paramtype2 = "facedir",
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drawtype = "nodebox",
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node_box = {type = "fixed", fixed = {-0.45, -0.15, 0.4, 0.45, 0.45, 0.498}},
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selection_box = {type = "fixed", fixed = {-0.45, -0.15, 0.4, 0.45, 0.45, 0.498}},
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tiles = {"signs_top.png", "signs_bottom.png", "signs_side.png", "signs_side.png", "signs_back.png", "signs_front.png"},
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groups = sign_groups,
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on_place = function(itemstack, placer, pointed_thing)
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local above = pointed_thing.above
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local under = pointed_thing.under
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local dir = {x = under.x - above.x,
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y = under.y - above.y,
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z = under.z - above.z}
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local wdir = minetest.dir_to_wallmounted(dir)
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local placer_pos = placer:getpos()
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if placer_pos then
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dir = {
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x = above.x - placer_pos.x,
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y = above.y - placer_pos.y,
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z = above.z - placer_pos.z
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}
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end
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local fdir = minetest.dir_to_facedir(dir)
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local sign_info
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if wdir == 0 then
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--how would you add sign to ceiling?
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minetest.env:add_item(above, "signs:sign_wall")
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itemstack:take_item()
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return itemstack
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elseif wdir == 1 then
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minetest.env:add_node(above, {name = "signs:sign_yard", param2 = fdir})
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sign_info = signs_yard[fdir + 1]
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else
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minetest.env:add_node(above, {name = "signs:sign_wall", param2 = fdir})
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sign_info = signs[fdir + 1]
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end
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local text = minetest.env:add_entity({x = above.x + sign_info.delta.x,
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y = above.y + sign_info.delta.y,
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z = above.z + sign_info.delta.z}, "signs:text")
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text:setyaw(sign_info.yaw)
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itemstack:take_item()
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return itemstack
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end,
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on_construct = function(pos)
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construct_sign(pos)
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end,
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on_destruct = function(pos)
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destruct_sign(pos)
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end,
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on_receive_fields = function(pos, formname, fields, sender)
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update_sign(pos, fields, sender)
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end,
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on_punch = function(pos, node, puncher)
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update_sign(pos)
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end,
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})
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minetest.register_node("signs:sign_yard", {
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paramtype = "light",
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sunlight_propagates = true,
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walkable = false,
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paramtype2 = "facedir",
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drawtype = "nodebox",
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node_box = {type = "fixed", fixed = {
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{-0.45, -0.15, -0.049, 0.45, 0.45, 0.049},
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{-0.05, -0.5, -0.049, 0.05, -0.15, 0.049}
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}},
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selection_box = {type = "fixed", fixed = {-0.45, -0.15, -0.049, 0.45, 0.45, 0.049}},
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tiles = {"signs_top.png", "signs_bottom.png", "signs_side.png", "signs_side.png", "signs_back.png", "signs_front.png"},
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groups = {choppy=2, dig_immediate=2},
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drop = "signs:sign_wall",
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on_construct = function(pos)
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construct_sign(pos)
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end,
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on_destruct = function(pos)
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destruct_sign(pos)
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end,
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on_receive_fields = function(pos, formname, fields, sender)
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update_sign(pos, fields, sender)
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end,
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on_punch = function(pos, node, puncher)
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update_sign(pos)
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end,
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})
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minetest.register_entity("signs:text", {
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collisionbox = { 0, 0, 0, 0, 0, 0 },
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visual = "upright_sprite",
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textures = {},
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on_activate = function(self)
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local meta = minetest.env:get_meta(self.object:getpos())
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local text = meta:get_string("text")
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self.object:set_properties({textures={generate_texture(create_lines(text))}})
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end
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})
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-- CONSTANTS
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local SIGN_WITH = 110
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local SIGN_PADDING = 8
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local LINE_LENGTH = 16
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local NUMBER_OF_LINES = 4
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local LINE_HEIGHT = 14
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local CHAR_WIDTH = 5
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string_to_array = function(str)
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local tab = {}
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for i=1,string.len(str) do
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table.insert(tab, string.sub(str, i,i))
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end
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return tab
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end
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string_to_word_array = function(str)
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local tab = {}
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local current = 1
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tab[1] = ""
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for _,char in ipairs(string_to_array(str)) do
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if char ~= " " then
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tab[current] = tab[current]..char
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else
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current = current+1
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tab[current] = ""
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end
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end
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return tab
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end
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create_lines = function(text)
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local line = ""
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local line_num = 1
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local tab = {}
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for _,word in ipairs(string_to_word_array(text)) do
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if string.len(line)+string.len(word) < LINE_LENGTH and word ~= "|" then
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if line ~= "" then
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line = line.." "..word
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else
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line = word
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end
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else
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table.insert(tab, line)
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if word ~= "|" then
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line = word
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else
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line = ""
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end
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line_num = line_num+1
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if line_num > NUMBER_OF_LINES then
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return tab
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end
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end
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end
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table.insert(tab, line)
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return tab
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end
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generate_texture = function(lines)
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local texture = "[combine:"..SIGN_WITH.."x"..SIGN_WITH
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local ypos = 12
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for i = 1, #lines do
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texture = texture..generate_line(lines[i], ypos)
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ypos = ypos + LINE_HEIGHT
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end
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return texture
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end
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generate_line = function(s, ypos)
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local i = 1
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local parsed = {}
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local width = 0
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local chars = 0
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while chars < max_chars and i <= #s do
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local file = nil
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if charmap[s:sub(i, i)] ~= nil then
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file = charmap[s:sub(i, i)]
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i = i + 1
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elseif i < #s and charmap[s:sub(i, i + 1)] ~= nil then
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file = charmap[s:sub(i, i + 1)]
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i = i + 2
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else
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print("[signs] W: unknown symbol in '"..s.."' at "..i.." (probably "..s:sub(i, i)..")")
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i = i + 1
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end
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if file ~= nil then
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width = width + CHAR_WIDTH
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table.insert(parsed, file)
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chars = chars + 1
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end
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end
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width = width - 1
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local texture = ""
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local xpos = math.floor((SIGN_WITH - 2 * SIGN_PADDING - width) / 2 + SIGN_PADDING)
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for i = 1, #parsed do
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texture = texture..":"..xpos..","..ypos.."="..parsed[i]..".png"
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xpos = xpos + CHAR_WIDTH + 1
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end
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return texture
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end
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if minetest.setting_get("log_mods") then
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minetest.log("action", "signs loaded")
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end
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