572 lines
16 KiB
Lua
572 lines
16 KiB
Lua
local S = minetest.get_translator("mcl_signs")
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local F = minetest.formspec_escape
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-- Load the characters map (characters.txt)
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--[[ File format of characters.txt:
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It's an UTF-8 encoded text file that contains metadata for all supported characters. It contains a sequence of info blocks, one for each character. Each info block is made out of 3 lines:
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Line 1: The literal UTF-8 encoded character
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Line 2: Name of the texture file for this character minus the “.png” suffix; found in the “textures/” sub-directory
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Line 3: Currently ignored. Previously this was for the character width in pixels
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After line 3, another info block may follow. This repeats until the end of the file.
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All character files must be 5 or 6 pixels wide (5 pixels are preferred)
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]]
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local chars_file = io.open(minetest.get_modpath("mcl_signs").."/characters.txt", "r")
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-- FIXME: Support more characters (many characters are missing). Currently ASCII and Latin-1 Supplement are supported.
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local charmap = {}
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if not chars_file then
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minetest.log("error", "[mcl_signs] : 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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-- CONSTANTS
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local SIGN_WIDTH = 115
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local LINE_LENGTH = 15
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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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-- Helper functions
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local function round(num, idp)
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local mult = 10^(idp or 0)
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return math.floor(num * mult + 0.5) / mult
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end
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local 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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local string_to_line_array = function(str)
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local tab = {}
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local current = 1
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local linechar = 1
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tab[1] = ""
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for _,char in ipairs(string_to_array(str)) do
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-- New line
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if char == "\n" then
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current = current + 1
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tab[current] = ""
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linechar = 1
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else
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tab[current] = tab[current]..char
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linechar = linechar + 1
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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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local create_lines = function(text)
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local line_num = 1
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local tab = {}
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for _, line in ipairs(string_to_line_array(text)) do
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if line_num > NUMBER_OF_LINES then
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break
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end
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table.insert(tab, line)
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line_num = line_num + 1
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end
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return tab
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end
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local 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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local printed_char_width = CHAR_WIDTH + 1
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while chars < LINE_LENGTH and i <= #s do
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local file = nil
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-- Get and render character
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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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-- No character image found.
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-- Use replacement character:
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file = "_rc"
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i = i + 1
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minetest.log("verbose", "[mcl_signs] Unknown symbol in '"..s.."' at "..i)
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end
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if file ~= nil then
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width = width + printed_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_WIDTH - width) / 2)
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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 + printed_char_width
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end
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return texture
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end
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local generate_texture = function(lines, signnodename)
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local texture = "[combine:"..SIGN_WIDTH.."x"..SIGN_WIDTH
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local ypos
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if signnodename == "mcl_signs:wall_sign" then
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ypos = 30
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else
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ypos = 0
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end
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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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local n = 23/56 - 1/128
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local signtext_info_wall = {
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{delta = {x = 0, y = 0, z = n}, yaw = 0},
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{delta = {x = n, y = 0, z = 0}, yaw = math.pi / -2},
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{delta = {x = 0, y = 0, z = -n}, yaw = math.pi},
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{delta = {x = -n, y = 0, z = 0}, yaw = math.pi / 2},
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}
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local signtext_info_standing = {}
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local m = -1/16 + 1/64
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for rot=0, 15 do
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local yaw = math.pi*2 - (((math.pi*2) / 16) * rot)
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local delta = vector.multiply(minetest.yaw_to_dir(yaw), m)
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-- Offset because sign is a bit above node boundaries
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delta.y = delta.y + 2/28
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table.insert(signtext_info_standing, { delta = delta, yaw = yaw })
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end
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local function get_rotation_level(facedir, nodename)
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local rl = facedir * 4
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if nodename == "mcl_signs:standing_sign22_5" then
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rl = rl + 1
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elseif nodename == "mcl_signs:standing_sign45" then
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rl = rl + 2
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elseif nodename == "mcl_signs:standing_sign67_5" then
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rl = rl + 3
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end
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return rl
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end
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local function get_wall_signtext_info(param2, nodename)
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local dir = minetest.wallmounted_to_dir(param2)
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if dir.x > 0 then
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return 2
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elseif dir.z > 0 then
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return 1
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elseif dir.x < 0 then
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return 4
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else
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return 3
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end
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end
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local sign_groups = {handy=1,axey=1, flammable=1, deco_block=1, material_wood=1, attached_node=1, dig_by_piston=1, flammable=-1}
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local destruct_sign = function(pos)
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local objects = minetest.get_objects_inside_radius(pos, 0.5)
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for _, v in ipairs(objects) do
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local ent = v:get_luaentity()
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if ent and ent.name == "mcl_signs:text" then
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v:remove()
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end
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end
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local players = minetest.get_connected_players()
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for p=1, #players do
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minetest.close_formspec(players[p]:get_player_name(), "mcl_signs:set_text_"..pos.x.."_"..pos.y.."_"..pos.z)
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end
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end
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local update_sign = function(pos, fields, sender, force_remove)
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local meta = minetest.get_meta(pos)
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if not meta then
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return
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end
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local text = meta:get_string("text")
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if fields and (text == "" and fields.text) then
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meta:set_string("text", fields.text)
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text = fields.text
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end
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if text == nil then
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text = ""
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end
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local sign_info
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local n = minetest.get_node(pos)
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local nn = n.name
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if nn == "mcl_signs:standing_sign" or nn == "mcl_signs:standing_sign22_5" or nn == "mcl_signs:standing_sign45" or nn == "mcl_signs:standing_sign67_5" then
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sign_info = signtext_info_standing[get_rotation_level(n.param2, nn) + 1]
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elseif nn == "mcl_signs:wall_sign" then
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sign_info = signtext_info_wall[get_wall_signtext_info(n.param2)]
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end
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if sign_info == nil then
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minetest.log("error", "[mcl_signs] Missing sign_info!")
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return
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end
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local objects = minetest.get_objects_inside_radius(pos, 0.5)
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local text_entity
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for _, v in ipairs(objects) do
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local ent = v:get_luaentity()
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if ent and ent.name == "mcl_signs:text" then
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if force_remove then
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v:remove()
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else
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text_entity = v
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break
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end
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end
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end
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if not text_entity then
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text_entity = minetest.add_entity({
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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}, "mcl_signs:text")
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end
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text_entity:get_luaentity()._signnodename = nn
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text_entity:set_properties({textures={generate_texture(create_lines(text), nn)}})
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text_entity:set_yaw(sign_info.yaw)
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end
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local show_formspec = function(player, pos)
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minetest.show_formspec(
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player:get_player_name(),
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"mcl_signs:set_text_"..pos.x.."_"..pos.y.."_"..pos.z,
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"size[6,3]textarea[0.25,0.25;6,1.5;text;"..F(S("Enter sign text:"))..";]label[0,1.5;"..F(S("Maximum line length: 15")).."\n"..F(S("Maximum lines: 4")).."]button_exit[0,2.5;6,1;submit;"..F(S("Done")).."]"
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)
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end
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minetest.register_on_player_receive_fields(function(player, formname, fields)
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if formname:find("mcl_signs:set_text_") == 1 then
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local x, y, z = formname:match("mcl_signs:set_text_(.-)_(.-)_(.*)")
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local pos = {x=tonumber(x), y=tonumber(y), z=tonumber(z)}
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if not pos or not pos.x or not pos.y or not pos.z then return end
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update_sign(pos, fields, player)
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end
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end)
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local node_sounds
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if minetest.get_modpath("mcl_sounds") then
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node_sounds = mcl_sounds.node_sound_wood_defaults()
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end
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minetest.register_node("mcl_signs:wall_sign", {
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description = S("Sign"),
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_tt_help = S("Can be written"),
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_doc_items_longdesc = S("Signs can be written and come in two variants: Wall sign and sign on a sign post. Signs can be placed on the top and the sides of other blocks, but not below them."),
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_doc_items_usagehelp = S("After placing the sign, you can write something on it. You have 4 lines of text with up to 15 characters for each line; anything beyond these limits is lost. Not all characters are supported. The text can not be changed once it has been written; you have to break and place the sign again."),
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inventory_image = "default_sign.png",
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walkable = false,
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is_ground_content = false,
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wield_image = "default_sign.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 = "wallmounted",
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drawtype = "mesh",
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mesh = "mcl_signs_signonwallmount.obj",
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selection_box = {type = "wallmounted", wall_side = {-0.5, -7/28, -0.5, -23/56, 7/28, 0.5}},
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tiles = {"mcl_signs_sign.png"},
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groups = sign_groups,
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stack_max = 16,
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sounds = node_sounds,
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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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-- Use pointed node's on_rightclick function first, if present
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local node_under = minetest.get_node(under)
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if placer and not placer:get_player_control().sneak then
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if minetest.registered_nodes[node_under.name] and minetest.registered_nodes[node_under.name].on_rightclick then
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return minetest.registered_nodes[node_under.name].on_rightclick(under, node_under, placer, itemstack) or itemstack
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end
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end
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local dir = vector.subtract(under, above)
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-- Only build when it's legal
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local abovenodedef = minetest.registered_nodes[minetest.get_node(above).name]
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if not abovenodedef or abovenodedef.buildable_to == false then
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return itemstack
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end
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local wdir = minetest.dir_to_wallmounted(dir)
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local placer_pos = placer:get_pos()
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local fdir = minetest.dir_to_facedir(dir)
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local sign_info
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local nodeitem = ItemStack(itemstack)
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-- Ceiling
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if wdir == 0 then
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--how would you add sign to ceiling?
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return itemstack
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-- Floor
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elseif wdir == 1 then
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-- Standing sign
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-- Determine the sign rotation based on player's yaw
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local yaw = math.pi*2 - placer:get_look_horizontal()
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-- Select one of 16 possible rotations (0-15)
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local rotation_level = round((yaw / (math.pi*2)) * 16)
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if rotation_level > 15 then
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rotation_level = 0
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elseif rotation_level < 0 then
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rotation_level = 15
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end
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-- The actual rotation is a combination of predefined mesh and facedir (see node definition)
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if rotation_level % 4 == 0 then
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nodeitem:set_name("mcl_signs:standing_sign")
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elseif rotation_level % 4 == 1 then
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nodeitem:set_name("mcl_signs:standing_sign22_5")
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elseif rotation_level % 4 == 2 then
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nodeitem:set_name("mcl_signs:standing_sign45")
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elseif rotation_level % 4 == 3 then
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nodeitem:set_name("mcl_signs:standing_sign67_5")
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end
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fdir = math.floor(rotation_level / 4)
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-- Place the node!
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local _, success = minetest.item_place_node(nodeitem, placer, pointed_thing, fdir)
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if not success then
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return itemstack
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end
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if not minetest.settings:get_bool("creative_mode") then
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itemstack:take_item()
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end
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sign_info = signtext_info_standing[rotation_level + 1]
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-- Side
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else
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-- Wall sign
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local _, success = minetest.item_place_node(itemstack, placer, pointed_thing, wdir)
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if not success then
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return itemstack
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end
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sign_info = signtext_info_wall[fdir + 1]
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end
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-- Determine spawn position of entity
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local place_pos
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if minetest.registered_nodes[node_under.name].buildable_to then
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place_pos = under
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else
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place_pos = above
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end
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local text_entity = minetest.add_entity({
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x = place_pos.x + sign_info.delta.x,
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y = place_pos.y + sign_info.delta.y,
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z = place_pos.z + sign_info.delta.z}, "mcl_signs:text")
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text_entity:set_yaw(sign_info.yaw)
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text_entity:get_luaentity()._signnodename = nodeitem:get_name()
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minetest.sound_play({name="default_place_node_hard", gain=1.0}, {pos = place_pos}, true)
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show_formspec(placer, place_pos)
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return itemstack
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end,
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on_destruct = destruct_sign,
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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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on_rotate = function(pos, node, user, mode)
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if mode == screwdriver.ROTATE_FACE then
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local r = screwdriver.rotate.wallmounted(pos, node, mode)
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node.param2 = r
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minetest.swap_node(pos, node)
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update_sign(pos, nil, nil, true)
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return true
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else
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return false
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end
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end,
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_mcl_hardness = 1,
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_mcl_blast_resistance = 1,
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})
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-- Standing sign nodes.
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-- 4 rotations at 0°, 22.5°, 45° and 67.5°.
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-- These are 4 out of 16 possible rotations.
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-- With facedir the remaining 12 rotations are constructed.
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-- 0°
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local ssign = {
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paramtype = "light",
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sunlight_propagates = true,
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walkable = false,
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is_ground_content = false,
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paramtype2 = "facedir",
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drawtype = "mesh",
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mesh = "mcl_signs_sign.obj",
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selection_box = {type = "fixed", fixed = {-0.2, -0.5, -0.2, 0.2, 0.5, 0.2}},
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tiles = {"mcl_signs_sign.png"},
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groups = sign_groups,
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drop = "mcl_signs:wall_sign",
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stack_max = 16,
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sounds = node_sounds,
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on_destruct = destruct_sign,
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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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on_rotate = function(pos, node, user, mode)
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if mode == screwdriver.ROTATE_FACE then
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node.name = "mcl_signs:standing_sign22_5"
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minetest.swap_node(pos, node)
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elseif mode == screwdriver.ROTATE_AXIS then
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return false
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end
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update_sign(pos, nil, nil, true)
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return true
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end,
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_mcl_hardness = 1,
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_mcl_blast_resistance = 1,
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}
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minetest.register_node("mcl_signs:standing_sign", ssign)
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-- 22.5°
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local ssign22_5 = table.copy(ssign)
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ssign22_5.mesh = "mcl_signs_sign22.5.obj"
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ssign22_5.on_rotate = function(pos, node, user, mode)
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if mode == screwdriver.ROTATE_FACE then
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node.name = "mcl_signs:standing_sign45"
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minetest.swap_node(pos, node)
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elseif mode == screwdriver.ROTATE_AXIS then
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return false
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end
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update_sign(pos, nil, nil, true)
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return true
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end
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minetest.register_node("mcl_signs:standing_sign22_5", ssign22_5)
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-- 45°
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local ssign45 = table.copy(ssign)
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ssign45.mesh = "mcl_signs_sign45.obj"
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ssign45.on_rotate = function(pos, node, user, mode)
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if mode == screwdriver.ROTATE_FACE then
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node.name = "mcl_signs:standing_sign67_5"
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minetest.swap_node(pos, node)
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elseif mode == screwdriver.ROTATE_AXIS then
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return false
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end
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update_sign(pos, nil, nil, true)
|
|
return true
|
|
end
|
|
minetest.register_node("mcl_signs:standing_sign45", ssign45)
|
|
|
|
-- 67.5°
|
|
local ssign67_5 = table.copy(ssign)
|
|
ssign67_5.mesh = "mcl_signs_sign67.5.obj"
|
|
ssign67_5.on_rotate = function(pos, node, user, mode)
|
|
if mode == screwdriver.ROTATE_FACE then
|
|
node.name = "mcl_signs:standing_sign"
|
|
node.param2 = (node.param2 + 1) % 4
|
|
minetest.swap_node(pos, node)
|
|
elseif mode == screwdriver.ROTATE_AXIS then
|
|
return false
|
|
end
|
|
update_sign(pos, nil, nil, true)
|
|
return true
|
|
end
|
|
minetest.register_node("mcl_signs:standing_sign67_5", ssign67_5)
|
|
|
|
-- FIXME: Prevent entity destruction by /clearobjects
|
|
minetest.register_entity("mcl_signs:text", {
|
|
pointable = false,
|
|
visual = "upright_sprite",
|
|
textures = {},
|
|
physical = false,
|
|
collide_with_objects = false,
|
|
|
|
_signnodename = nil, -- node name of sign node to which the text belongs
|
|
|
|
on_activate = function(self, staticdata)
|
|
if staticdata ~= nil and staticdata ~= "" then
|
|
local des = minetest.deserialize(staticdata)
|
|
if des then
|
|
self._signnodename = des._signnodename
|
|
end
|
|
end
|
|
local meta = minetest.get_meta(self.object:get_pos())
|
|
local text = meta:get_string("text")
|
|
self.object:set_properties({
|
|
textures={generate_texture(create_lines(text), self._signnodename)},
|
|
})
|
|
self.object:set_armor_groups({ immortal = 1 })
|
|
end,
|
|
get_staticdata = function(self)
|
|
local out = { _signnodename = self._signnodename }
|
|
return minetest.serialize(out)
|
|
end,
|
|
})
|
|
|
|
minetest.register_craft({
|
|
type = "fuel",
|
|
recipe = "mcl_signs:wall_sign",
|
|
burntime = 10,
|
|
})
|
|
|
|
if minetest.get_modpath("mcl_core") then
|
|
minetest.register_craft({
|
|
output = 'mcl_signs:wall_sign 3',
|
|
recipe = {
|
|
{'group:wood', 'group:wood', 'group:wood'},
|
|
{'group:wood', 'group:wood', 'group:wood'},
|
|
{'', 'mcl_core:stick', ''},
|
|
}
|
|
})
|
|
end
|
|
|
|
if minetest.get_modpath("doc") then
|
|
doc.add_entry_alias("nodes", "mcl_signs:wall_sign", "nodes", "mcl_signs:standing_sign")
|
|
doc.add_entry_alias("nodes", "mcl_signs:wall_sign", "nodes", "mcl_signs:standing_sign22_5")
|
|
doc.add_entry_alias("nodes", "mcl_signs:wall_sign", "nodes", "mcl_signs:standing_sign45")
|
|
doc.add_entry_alias("nodes", "mcl_signs:wall_sign", "nodes", "mcl_signs:standing_sign67_5")
|
|
end
|
|
|
|
minetest.register_alias("signs:sign_wall", "mcl_signs:wall_sign")
|
|
minetest.register_alias("signs:sign_yard", "mcl_signs:standing_sign")
|
|
|
|
minetest.register_lbm({
|
|
name = "mcl_signs:respawn_entities",
|
|
label = "Respawn sign text entities",
|
|
run_at_every_load = true,
|
|
nodenames = { "mcl_signs:wall_sign", "mcl_signs:standing_sign", "mcl_signs:standing_sign22_5", "mcl_signs:standing_sign45", "mcl_signs:standing_sign67_5" },
|
|
action = function(pos, node)
|
|
update_sign(pos)
|
|
end,
|
|
})
|