forked from mtcontrib/homedecor_modpack
681 lines
19 KiB
Lua
681 lines
19 KiB
Lua
-- This mod provides the visible text on signs library used by Home Decor
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-- and perhaps other mods at some point in the future. Forked from thexyz's/
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-- PilzAdam's original text-on-signs mod and rewritten by Vanessa Ezekowitz
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-- and Diego Martinez
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signs_lib = {}
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signs_lib.modpath = minetest.get_modpath("signs_lib")
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signs_lib.intllib_modpath = minetest.get_modpath("intllib")
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dofile(signs_lib.modpath.."/ownership.lua")
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local S
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if signs_lib.intllib_modpath then
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dofile(signs_lib.intllib_modpath.."/intllib.lua")
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S = intllib.Getter(minetest.get_current_modname())
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else
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S = function ( s ) return s end
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end
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--table copy
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function signs_lib.table_copy(t)
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local nt = { };
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for k, v in pairs(t) do
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if type(v) == "table" then
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nt[k] = signs_lib.table_copy(v)
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else
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nt[k] = v
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end
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end
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return nt
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end
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-- CONSTANTS
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local MP = minetest.get_modpath("signs_lib")
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-- Used by `build_char_db' to locate the file.
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local FONT_FMT = "%s/hdf_%02x.png"
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-- Simple texture name for building text texture.
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local FONT_FMT_SIMPLE = "hdf_%02x.png"
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-- Path to the textures.
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local TP = MP.."/textures"
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local TEXT_SCALE = {x=0.8, y=0.5}
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-- Lots of overkill here. KISS advocates, go away, shoo! ;) -- kaeza
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local PNG_HDR = string.char(0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A)
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-- Read the image size from a PNG file.
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-- Returns image_w, image_h.
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-- Only the LSB is read from each field!
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local function read_char_size(c)
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local filename = FONT_FMT:format(TP, c)
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local f = io.open(filename, "rb")
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f:seek("set", 0x0)
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local hdr = f:read(8)
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if hdr ~= PNG_HDR then
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f:close()
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return
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end
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f:seek("set", 0x13)
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local ws = f:read(1)
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f:seek("set", 0x17)
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local hs = f:read(1)
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f:close()
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return ws:byte(), hs:byte()
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end
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-- Set by build_char_db()
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local LINE_HEIGHT
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local SIGN_WIDTH
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-- Size of the canvas, in characters.
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-- Please note that CHARS_PER_LINE is multiplied by the average character
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-- width to get the total width of the canvas, so for proportional fonts,
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-- either more or fewer characters may fit on a line.
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local CHARS_PER_LINE = 30
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local NUMBER_OF_LINES = 6
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-- Separation between lines. 1.0 means no separation (ypos offset by text
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-- height), 2.0 is one "line" (ypos offset by two times text height), etc.
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local LINE_SEP = 1.2
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-- This holds the individual character widths.
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-- Indexed by the actual character (e.g. charwidth["A"])
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local charwidth = { }
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-- File to cache the font size to.
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local CHARDB_FILE = minetest.get_worldpath().."/signs_lib_chardb"
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-- Returns true if any file differs from cached one.
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local function check_random_chars()
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for i = 1, 5 do
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local c = math.random(32, 126)
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local w, h = read_char_size(c)
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-- File is not a PNG... wut?
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if not (w and h) then return true end
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local ch = string.char(c)
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if (not charwidth[ch]) -- Char is not cached.
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or (charwidth[ch] ~= w) -- Width differs.
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or (LINE_HEIGHT and (LINE_HEIGHT ~= h)) -- Height differs
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then
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-- In any case, file is different; rebuild cache.
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return true
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end
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end
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-- OK, our superficial check passed. If the textures are messed up,
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-- it's not our problem.
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return false
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end
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local function build_char_db()
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LINE_HEIGHT = nil
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SIGN_WIDTH = nil
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-- To calculate average char width.
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local total_width = 0
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local char_count = 0
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-- Try to load cached data to avoid heavy disk I/O.
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local cdbf = io.open(CHARDB_FILE, "rt")
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if cdbf then
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minetest.log("info", "[signs_lib] "..S("Reading cached character database."))
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for line in cdbf:lines() do
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local ch, w = line:match("(0x[0-9A-Fa-f]+)%s+([0-9][0-9]*)")
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if ch and w then
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local c = tonumber(ch)
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w = tonumber(w)
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if c and w then
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if c == 0 then
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LINE_HEIGHT = w
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elseif (c >= 32) and (c < 127) then
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charwidth[string.char(c)] = w
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total_width = total_width + w
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char_count = char_count + 1
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end
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end
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end
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end
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cdbf:close()
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if LINE_HEIGHT then
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-- Check some random characters to see if the file on disk differs
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-- from the cached one. If so, then ditch cached data and rebuild
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-- (font probably was changed).
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if check_random_chars() then
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LINE_HEIGHT = nil
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minetest.log("info", "[signs_lib] "
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..S("Font seems to have changed. Rebuilding cache.")
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)
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end
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else
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minetest.log("warning", "[signs_lib] "
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..S("Could not find font line height in cached DB. Trying brute force.")
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)
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end
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end
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if not LINE_HEIGHT then
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-- OK, something went wrong... try brute force loading from texture files.
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charwidth = { }
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total_width = 0
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char_count = 0
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for c = 32, 126 do
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local w, h = read_char_size(c)
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if w and h then
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local ch = string.char(c)
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charwidth[ch] = w
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total_width = total_width + w
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char_count = char_count + 1
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if not LINE_HEIGHT then LINE_HEIGHT = h end
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end
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end
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if not LINE_HEIGHT then
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error("Could not find font line height.")
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end
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end
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-- XXX: Is there a better way to calc this?
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SIGN_WIDTH = math.floor((total_width / char_count) * CHARS_PER_LINE)
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-- Try to save cached list back to disk.
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local e -- Note: `cdbf' is already declared local above.
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cdbf, e = io.open(CHARDB_FILE, "wt")
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if not cdbf then
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minetest.log("warning", "[signs_lib] Could not save cached char DB: "..(e or ""))
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return
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end
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cdbf:write(("0x00 %d\n"):format(LINE_HEIGHT))
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for c = 32, 126 do
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local w = charwidth[string.char(c)]
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if w then
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cdbf:write(("0x%02X %d\n"):format(c, w))
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end
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end
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cdbf:close()
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end
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local signs = {
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{delta = {x = 0, y = 0.15, z = 0.399}, yaw = 0},
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{delta = {x = 0.399, y = 0.15, z = 0 }, yaw = math.pi / -2},
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{delta = {x = 0, y = 0.15, z = -0.399}, yaw = math.pi},
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{delta = {x = -0.399, y = 0.15, 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 = 0.15, z = -0.05}, yaw = 0},
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{delta = {x = -0.05, y = 0.15, z = 0 }, yaw = math.pi / -2},
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{delta = {x = 0, y = 0.15, z = 0.05}, yaw = math.pi},
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{delta = {x = 0.05, y = 0.15, z = 0 }, yaw = math.pi / 2},
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}
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local signs_post = {
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{delta = {x = 0, y = 0.15, z = -0.226}, yaw = 0},
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{delta = {x = -0.226, y = 0.15, z = 0 }, yaw = math.pi / -2},
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{delta = {x = 0, y = 0.15, z = 0.226 }, yaw = math.pi},
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{delta = {x = 0.226, y = 0.15, 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 fences_with_sign = { }
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-- some local helper functions
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local function split_lines_and_words(text)
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local lines = { }
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local line = { }
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if not text then return end
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for word in text:gmatch("%S+") do
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if word == "|" then
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table.insert(lines, line)
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if #lines >= NUMBER_OF_LINES then break end
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line = { }
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elseif word == "\\|" then
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table.insert(line, "|")
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else
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table.insert(line, word)
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end
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end
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table.insert(lines, line)
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return lines
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end
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local math_max = math.max
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local function make_line_texture(line, lineno)
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local width = 0
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local maxw = 0
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local words = { }
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-- We check which chars are available here.
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for word_i, word in ipairs(line) do
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local chars = { }
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local ch_offs = 0
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for i = 1, #word do
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local c = word:sub(i, i)
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local w = charwidth[c]
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if w then
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width = width + w + 1
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if width >= (SIGN_WIDTH - charwidth[" "]) then
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width = 0
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else
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maxw = math_max(width, maxw)
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end
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table.insert(chars, {
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off=ch_offs,
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tex=FONT_FMT_SIMPLE:format(c:byte())
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})
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ch_offs = ch_offs + w + 1
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end
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end
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width = width + charwidth[" "] + 1
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maxw = math_max(width, maxw)
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table.insert(words, { chars=chars, w=ch_offs })
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end
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-- Okay, we actually build the "line texture" here.
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local texture = { }
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local start_xpos = math.floor((SIGN_WIDTH - maxw) / 2)
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local xpos = start_xpos
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local ypos = (LINE_HEIGHT * lineno)
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for word_i, word in ipairs(words) do
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local xoffs = (xpos - start_xpos)
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if (xoffs > 0) and ((xoffs + word.w) > maxw) then
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xpos = start_xpos
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ypos = ypos + (LINE_HEIGHT * LINE_SEP)
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lineno = lineno + 1
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if lineno >= NUMBER_OF_LINES then break end
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end
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for ch_i, ch in ipairs(word.chars) do
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table.insert(texture, (":%d,%d=%s"):format(xpos + ch.off, ypos, ch.tex))
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end
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xpos = xpos + word.w + charwidth[" "]
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end
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return table.concat(texture, ""), lineno
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end
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local function make_sign_texture(lines)
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local texture = { ("[combine:%dx%d"):format(SIGN_WIDTH, LINE_HEIGHT * NUMBER_OF_LINES * LINE_SEP) }
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local lineno = 0
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for i = 1, #lines do
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if lineno >= NUMBER_OF_LINES then break end
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local linetex, ln = make_line_texture(lines[i], lineno)
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table.insert(texture, linetex)
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lineno = ln + 1
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end
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return table.concat(texture, "")
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end
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local function set_obj_text(obj, text)
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obj:set_properties({
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textures={make_sign_texture(split_lines_and_words(text))},
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visual_size = TEXT_SCALE,
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})
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end
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signs_lib.construct_sign = function(pos)
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local meta = minetest.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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signs_lib.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 e = v:get_luaentity()
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if e and e.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 function make_infotext(text)
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local lines = split_lines_and_words(text) or {}
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local lines2 = { }
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for _, line in ipairs(lines) do
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table.insert(lines2, table.concat(line, " "))
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end
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return table.concat(lines2, "\n")
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end
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signs_lib.update_sign = function(pos, fields)
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local meta = minetest.get_meta(pos)
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if fields then
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meta:set_string("infotext", make_infotext(fields.text))
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meta:set_string("text", fields.text)
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end
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local text = meta:get_string("text")
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if text == nil then return end
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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 e = v:get_luaentity()
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if e and e.name == "signs:text" then
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set_obj_text(v, 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.get_node(pos).name == "signs:sign_yard" then
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sign_info = signs_yard[minetest.get_node(pos).param2 + 1]
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elseif minetest.get_node(pos).name == "default:sign_wall" then
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sign_info = signs[minetest.get_node(pos).param2 + 1]
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else --if minetest.get_node(pos).name == "signs:sign_post" then
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sign_info = signs_post[minetest.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.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(":default:sign_wall", {
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description = "Sign",
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inventory_image = "default_sign_wall.png",
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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 name
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name = minetest.get_node(pointed_thing.under).name
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if fences_with_sign[name] then
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if signs_lib.node_is_owned(pointed_thing.under, placer) then
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return itemstack
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end
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else
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name = minetest.get_node(pointed_thing.above).name
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local def = minetest.registered_nodes[name]
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if signs_lib.node_is_owned(pointed_thing.above, placer)
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or (not def.buildable_to) then
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return itemstack
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end
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end
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local node=minetest.get_node(pointed_thing.under)
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if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].on_rightclick then
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return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack)
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else
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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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local pt_name = minetest.get_node(under).name
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print(dump(pt_name))
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if fences_with_sign[pt_name] then
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minetest.add_node(under, {name = fences_with_sign[pt_name], param2 = fdir})
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sign_info = signs_post[fdir + 1]
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elseif wdir == 0 then
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--how would you add sign to ceiling?
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minetest.add_item(above, "default: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.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.add_node(above, {name = "default: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.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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if not signs_lib.expect_infinite_stacks then
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itemstack:take_item()
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end
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return itemstack
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end
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end,
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on_construct = function(pos)
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signs_lib.construct_sign(pos)
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end,
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on_destruct = function(pos)
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signs_lib.destruct_sign(pos)
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end,
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on_receive_fields = function(pos, formname, fields, sender)
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if fields and (not fields.quit) and fields.text then
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print(S("%s wrote \"%s\" to sign at %s"):format(
|
|
(sender:get_player_name() or ""),
|
|
fields.text,
|
|
minetest.pos_to_string(pos)
|
|
))
|
|
end
|
|
if signs_lib.node_is_owned(pos, sender) then return end
|
|
signs_lib.update_sign(pos, fields)
|
|
end,
|
|
on_punch = function(pos, node, puncher)
|
|
signs_lib.update_sign(pos)
|
|
end,
|
|
})
|
|
|
|
minetest.register_node(":signs:sign_yard", {
|
|
paramtype = "light",
|
|
sunlight_propagates = true,
|
|
paramtype2 = "facedir",
|
|
drawtype = "nodebox",
|
|
node_box = {type = "fixed", fixed = {
|
|
{-0.45, -0.15, -0.049, 0.45, 0.45, 0.049},
|
|
{-0.05, -0.5, -0.049, 0.05, -0.15, 0.049}
|
|
}},
|
|
selection_box = {type = "fixed", fixed = {-0.45, -0.15, -0.049, 0.45, 0.45, 0.049}},
|
|
tiles = {"signs_top.png", "signs_bottom.png", "signs_side.png", "signs_side.png", "signs_back.png", "signs_front.png"},
|
|
groups = {choppy=2, dig_immediate=2},
|
|
drop = "default:sign_wall",
|
|
|
|
on_construct = function(pos)
|
|
signs_lib.construct_sign(pos)
|
|
end,
|
|
on_destruct = function(pos)
|
|
signs_lib.destruct_sign(pos)
|
|
end,
|
|
on_receive_fields = function(pos, formname, fields, sender)
|
|
if fields and (not fields.quit) and fields.text then
|
|
print(S("%s wrote \"%s\" to sign at %s"):format(
|
|
(sender:get_player_name() or ""),
|
|
fields.text,
|
|
minetest.pos_to_string(pos)
|
|
))
|
|
end
|
|
if signs_lib.node_is_owned(pos, sender) then return end
|
|
signs_lib.update_sign(pos, fields)
|
|
end,
|
|
on_punch = function(pos, node, puncher)
|
|
signs_lib.update_sign(pos)
|
|
end,
|
|
})
|
|
|
|
minetest.register_node(":signs:sign_post", {
|
|
paramtype = "light",
|
|
sunlight_propagates = true,
|
|
paramtype2 = "facedir",
|
|
drawtype = "nodebox",
|
|
node_box = {
|
|
type = "fixed",
|
|
fixed = {
|
|
{ -0.125, -0.5, -0.125, 0.125, 0.5, 0.125 },
|
|
{ -0.45, -0.15, -0.225, 0.45, 0.45, -0.125 },
|
|
}
|
|
},
|
|
selection_box = {
|
|
type = "fixed",
|
|
fixed = {
|
|
{ -0.125, -0.5, -0.125, 0.125, 0.5, 0.125 },
|
|
{ -0.45, -0.15, -0.225, 0.45, 0.45, -0.125 },
|
|
}
|
|
},
|
|
tiles = {
|
|
"signs_post_top.png",
|
|
"signs_post_bottom.png",
|
|
"signs_post_side.png",
|
|
"signs_post_side.png",
|
|
"signs_post_back.png",
|
|
"signs_post_front.png",
|
|
},
|
|
groups = {choppy=2, dig_immediate=2},
|
|
drop = {
|
|
max_items = 2,
|
|
items = {
|
|
{ items = { "default:sign_wall" }},
|
|
{ items = { "default:fence_wood" }},
|
|
},
|
|
},
|
|
})
|
|
|
|
local signs_text_on_activate
|
|
|
|
signs_text_on_activate = function(self)
|
|
local meta = minetest.get_meta(self.object:getpos())
|
|
local text = meta:get_string("text")
|
|
if text then
|
|
set_obj_text(self.object, text)
|
|
end
|
|
end
|
|
|
|
minetest.register_entity(":signs:text", {
|
|
collisionbox = { 0, 0, 0, 0, 0, 0 },
|
|
visual = "upright_sprite",
|
|
textures = {},
|
|
|
|
on_activate = signs_text_on_activate,
|
|
})
|
|
|
|
-- And the good stuff here! :-)
|
|
|
|
function signs_lib.register_fence_with_sign(fencename, fencewithsignname)
|
|
local def = minetest.registered_nodes[fencename]
|
|
local def_sign = minetest.registered_nodes[fencewithsignname]
|
|
if not (def and def_sign) then
|
|
minetest.log("warning", "[signs_lib] Attempt to register unknown node as fence")
|
|
return
|
|
end
|
|
def = signs_lib.table_copy(def)
|
|
def_sign = signs_lib.table_copy(def_sign)
|
|
fences_with_sign[fencename] = fencewithsignname
|
|
|
|
def.on_place = function(itemstack, placer, pointed_thing, ...)
|
|
local node_above = minetest.get_node(pointed_thing.above)
|
|
local node_under = minetest.get_node(pointed_thing.under)
|
|
local def_above = minetest.registered_nodes[node_above.name]
|
|
local def_under = minetest.registered_nodes[node_under.name]
|
|
local fdir = minetest.dir_to_facedir(placer:get_look_dir())
|
|
if def_under and def_under.on_rightclick then
|
|
return def_under.on_rightclick(pointed_thing.under, node_under, placer, itemstack) or itemstack
|
|
elseif (not signs_lib.node_is_owned(pointed_thing.under, placer))
|
|
and def_under.buildable_to then
|
|
minetest.add_node(pointed_thing.under, {name = fencename, param2 = fdir})
|
|
if not signs_lib.expect_infinite_stacks then
|
|
itemstack:take_item()
|
|
end
|
|
placer:set_wielded_item(itemstack)
|
|
return itemstack
|
|
elseif (not signs_lib.node_is_owned(pointed_thing.above, placer))
|
|
and def_above.buildable_to then
|
|
minetest.add_node(pointed_thing.above, {name = fencename, param2 = fdir})
|
|
if not signs_lib.expect_infinite_stacks then
|
|
itemstack:take_item()
|
|
end
|
|
placer:set_wielded_item(itemstack)
|
|
return itemstack
|
|
end
|
|
end
|
|
def_sign.on_construct = function(pos, ...)
|
|
signs_lib.construct_sign(pos)
|
|
end
|
|
def_sign.on_destruct = function(pos, ...)
|
|
signs_lib.destruct_sign(pos)
|
|
end
|
|
def_sign.on_receive_fields = function(pos, formname, fields, sender, ...)
|
|
if fields and (not fields.quit) and fields.text then
|
|
print(S("%s wrote \"%s\" to sign at %s"):format(
|
|
(sender:get_player_name() or ""),
|
|
fields.text,
|
|
minetest.pos_to_string(pos)
|
|
))
|
|
end
|
|
if signs_lib.node_is_owned(pos, sender) then return end
|
|
signs_lib.update_sign(pos, fields)
|
|
end
|
|
def_sign.on_punch = function(pos, node, puncher, ...)
|
|
signs_lib.update_sign(pos)
|
|
end
|
|
local fencename = fencename
|
|
def_sign.after_dig_node = function(pos, node, ...)
|
|
node.name = fencename
|
|
minetest.add_node(pos, node)
|
|
end
|
|
def_sign.drop = "default:sign_wall"
|
|
minetest.register_node(":"..fencename, def)
|
|
minetest.register_node(":"..fencewithsignname, def_sign)
|
|
print(S("Registered %s and %s"):format(fencename, fencewithsignname))
|
|
end
|
|
|
|
build_char_db()
|
|
|
|
minetest.register_alias("homedecor:fence_wood_with_sign", "signs:sign_post")
|
|
|
|
signs_lib.register_fence_with_sign("default:fence_wood", "signs:sign_post")
|
|
|
|
if minetest.setting_get("log_mods") then
|
|
minetest.log("action", S("signs loaded"))
|
|
end
|