init.lua

   1 -- This mod provides the visible text on signs library used by Home Decor
   2 -- and perhaps other mods at some point in the future.  Forked from thexyz's/
   3 -- PilzAdam's original text-on-signs mod and rewritten by Vanessa Ezekowitz
   4 -- and Diego Martinez
   5
   6 -- textpos = {
   7 --              { delta = {entity position for 0° yaw}, exact yaw expression }
   8 --              { delta = {entity position for 180° yaw}, exact yaw expression }
   9 --              { delta = {entity position for 270° yaw}, exact yaw expression }
  10 --              { delta = {entity position for 90° yaw}, exact yaw expression }
  11 -- }
  12
  13 -- CWz's keyword interact mod uses this setting.
  14 local current_keyword = minetest.setting_get("interact_keyword") or "iaccept"
  15
  16 signs_lib = {}
  17 screwdriver = screwdriver or {}
  18
  19 signs_lib.wallmounted_rotate = function(pos, node, user, mode, new_param2)
  20         if mode ~= screwdriver.ROTATE_AXIS then return false end
  21         minetest.swap_node(pos, {name = node.name, param2 = (node.param2 + 1) % 6})
  22         for _, v in ipairs(minetest.get_objects_inside_radius(pos, 0.5)) do
  23                 local e = v:get_luaentity()
  24                 if e and e.name == "signs:text" then
  25                         v:remove()
  26                 end
  27         end
  28         signs_lib.update_sign(pos)
  29         return true
  30 end
  31
  32 signs_lib.modpath = minetest.get_modpath("signs_lib")
  33
  34 signs_lib.regular_wall_sign_model = {
  35         nodebox = {
  36                 type = "wallmounted",
  37                 wall_side =   { -0.5,    -0.25,   -0.4375, -0.4375,  0.375,  0.4375 },
  38                 wall_bottom = { -0.4375, -0.5,    -0.25,    0.4375, -0.4375, 0.375 },
  39                 wall_top =    { -0.4375,  0.4375, -0.375,   0.4375,  0.5,    0.25 }
  40         },
  41         textpos = {
  42                 nil,
  43                 nil,
  44                 {delta = { x =  0.41, y = 0.07, z =  0    }, yaw = math.pi / -2},
  45                 {delta = { x = -0.41, y = 0.07, z =  0    }, yaw = math.pi / 2},
  46                 {delta = { x =  0,    y = 0.07, z =  0.41 }, yaw = 0},
  47                 {delta = { x =  0,    y = 0.07, z = -0.41 }, yaw = math.pi},
  48         }
  49 }
  50
  51 signs_lib.metal_wall_sign_model = {
  52         nodebox = {
  53                 type = "fixed",
  54                 fixed = {-0.4375, -0.25, 0.4375, 0.4375, 0.375, 0.5}
  55         },
  56         textpos = {
  57                 {delta = { x =  0,     y = 0.07, z =  0.41 }, yaw = 0},
  58                 {delta = { x =  0.41,  y = 0.07, z =  0    }, yaw = math.pi / -2},
  59                 {delta = { x =  0,     y = 0.07, z = -0.41 }, yaw = math.pi},
  60                 {delta = { x = -0.41,  y = 0.07, z =  0    }, yaw = math.pi / 2},
  61         }
  62 }
  63
  64 signs_lib.yard_sign_model = {
  65         nodebox = {
  66                 type = "fixed",
  67                 fixed = {
  68                                 {-0.4375, -0.25, -0.0625, 0.4375, 0.375, 0},
  69                                 {-0.0625, -0.5, -0.0625, 0.0625, -0.1875, 0},
  70                 }
  71         },
  72         textpos = {
  73                 {delta = { x =  0,    y = 0.07, z = -0.08 }, yaw = 0},
  74                 {delta = { x = -0.08, y = 0.07, z =  0    }, yaw = math.pi / -2},
  75                 {delta = { x =  0,    y = 0.07, z =  0.08 }, yaw = math.pi},
  76                 {delta = { x =  0.08, y = 0.07, z =  0    }, yaw = math.pi / 2},
  77         }
  78 }
  79
  80 signs_lib.hanging_sign_model = {
  81         nodebox = {
  82                 type = "fixed",
  83                 fixed = {
  84                                 {-0.4375, -0.3125, -0.0625, 0.4375, 0.3125, 0},
  85                                 {-0.4375, 0.25, -0.03125, 0.4375, 0.5, -0.03125},
  86                 }
  87         },
  88         textpos = {
  89                 {delta = { x =  0,    y = -0.02, z = -0.08 }, yaw = 0},
  90                 {delta = { x = -0.08, y = -0.02, z =  0    }, yaw = math.pi / -2},
  91                 {delta = { x =  0,    y = -0.02, z =  0.08 }, yaw = math.pi},
  92                 {delta = { x =  0.08, y = -0.02, z =  0    }, yaw = math.pi / 2},
  93         }
  94 }
  95
  96 signs_lib.sign_post_model = {
  97         nodebox = {
  98                 type = "fixed",
  99                 fixed = {
 100                                 {-0.4375, -0.25, -0.1875, 0.4375, 0.375, -0.125},
 101                                 {-0.125, -0.5, -0.125, 0.125, 0.5, 0.125},
 102                 }
 103         },
 104         textpos = {
 105                 {delta = { x = 0,    y = 0.07, z = -0.2 }, yaw = 0},
 106                 {delta = { x = -0.2, y = 0.07, z = 0    }, yaw = math.pi / -2},
 107                 {delta = { x = 0,    y = 0.07, z = 0.2  }, yaw = math.pi},
 108                 {delta = { x = 0.2,  y = 0.07, z = 0    }, yaw = math.pi / 2},
 109         }
 110 }
 111
 112 -- Boilerplate to support localized strings if intllib mod is installed.
 113 local S = rawget(_G, "intllib") and intllib.Getter() or function(s) return s end
 114 signs_lib.gettext = S
 115
 116 -- the list of standard sign nodes
 117
 118 signs_lib.sign_node_list = {
 119                 "default:sign_wall_wood",
 120                 "signs:sign_yard",
 121                 "signs:sign_hanging",
 122                 "signs:sign_wall_green",
 123                 "signs:sign_wall_yellow",
 124                 "signs:sign_wall_red",
 125                 "signs:sign_wall_white_red",
 126                 "signs:sign_wall_white_black",
 127                 "signs:sign_wall_orange",
 128                 "signs:sign_wall_blue",
 129                 "signs:sign_wall_brown",
 130                 "locked_sign:sign_wall_locked"
 131 }
 132
 133 local default_sign, default_sign_image
 134
 135 -- Default sign was renamed in 0.4.14. Support both & old versions.
 136 if minetest.registered_nodes["default:sign_wall_wood"] then
 137         default_sign = "default:sign_wall_wood"
 138         default_sign_image = "default_sign_wood.png"
 139 else
 140         default_sign = "default:sign_wall"
 141         default_sign_image = "default_sign_wall.png"
 142 end
 143
 144 default_sign_metal = "default:sign_wall_steel"
 145 default_sign_metal_image = "default_sign_steel.png"
 146
 147 --table copy
 148
 149 function signs_lib.table_copy(t)
 150     local nt = { };
 151     for k, v in pairs(t) do
 152         if type(v) == "table" then
 153             nt[k] = signs_lib.table_copy(v)
 154         else
 155             nt[k] = v
 156         end
 157     end
 158     return nt
 159 end
 160
 161 -- infinite stacks
 162
 163 if minetest.get_modpath("unified_inventory") or not minetest.setting_getbool("creative_mode") then
 164         signs_lib.expect_infinite_stacks = false
 165 else
 166         signs_lib.expect_infinite_stacks = true
 167 end
 168
 169 -- CONSTANTS
 170
 171 local MP = minetest.get_modpath("signs_lib")
 172
 173 -- Used by `build_char_db' to locate the file.
 174 local FONT_FMT = "%s/hdf_%02x.png"
 175
 176 -- Simple texture name for building text texture.
 177 local FONT_FMT_SIMPLE = "hdf_%02x.png"
 178
 179 -- Path to the textures.
 180 local TP = MP.."/textures"
 181
 182 local TEXT_SCALE = {x=0.8, y=0.5}
 183
 184 -- Lots of overkill here. KISS advocates, go away, shoo! ;) -- kaeza
 185
 186 local PNG_HDR = string.char(0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A)
 187
 188 -- Read the image size from a PNG file.
 189 -- Returns image_w, image_h.
 190 -- Only the LSB is read from each field!
 191 local function read_image_size(filename)
 192         local f = io.open(filename, "rb")
 193         f:seek("set", 0x0)
 194         local hdr = f:read(8)
 195         if hdr ~= PNG_HDR then
 196                 f:close()
 197                 return
 198         end
 199         f:seek("set", 0x13)
 200         local ws = f:read(1)
 201         f:seek("set", 0x17)
 202         local hs = f:read(1)
 203         f:close()
 204         return ws:byte(), hs:byte()
 205 end
 206
 207 -- Set by build_char_db()
 208 local LINE_HEIGHT
 209 local SIGN_WIDTH
 210 local COLORBGW, COLORBGH
 211
 212 -- Size of the canvas, in characters.
 213 -- Please note that CHARS_PER_LINE is multiplied by the average character
 214 -- width to get the total width of the canvas, so for proportional fonts,
 215 -- either more or fewer characters may fit on a line.
 216 local CHARS_PER_LINE = 30
 217 local NUMBER_OF_LINES = 6
 218
 219 -- 6 rows, max 80 chars per, plus a bit of fudge to
 220 -- avoid excess trimming (e.g. due to color codes)
 221
 222 local MAX_INPUT_CHARS = 600
 223
 224 -- This holds the individual character widths.
 225 -- Indexed by the actual character (e.g. charwidth["A"])
 226 local charwidth
 227
 228 -- helper functions to trim sign text input/output
 229
 230 local function trim_input(text)
 231         return text:sub(1, math.min(MAX_INPUT_CHARS, text:len()))
 232 end
 233
 234 local function build_char_db()
 235
 236         charwidth = { }
 237
 238         -- To calculate average char width.
 239         local total_width = 0
 240         local char_count = 0
 241
 242         for c = 32, 126 do
 243                 local w, h = read_image_size(FONT_FMT:format(TP, c))
 244                 if w and h then
 245                         local ch = string.char(c)
 246                         charwidth[ch] = w
 247                         total_width = total_width + w
 248                         char_count = char_count + 1
 249                 end
 250         end
 251
 252         COLORBGW, COLORBGH = read_image_size(TP.."/slc_n.png")
 253         assert(COLORBGW and COLORBGH, "error reading bg dimensions")
 254         LINE_HEIGHT = COLORBGH
 255
 256         -- XXX: Is there a better way to calc this?
 257         SIGN_WIDTH = math.floor((total_width / char_count) * CHARS_PER_LINE)
 258
 259 end
 260
 261 local sign_groups = {choppy=2, dig_immediate=2}
 262
 263 local fences_with_sign = { }
 264
 265 -- some local helper functions
 266
 267 local function split_lines_and_words_old(text)
 268         local lines = { }
 269         local line = { }
 270         if not text then return end
 271         for word in text:gmatch("%S+") do
 272                 if word == "|" then
 273                         table.insert(lines, line)
 274                         if #lines >= NUMBER_OF_LINES then break end
 275                         line = { }
 276                 elseif word == "\\|" then
 277                         table.insert(line, "|")
 278                 else
 279                         table.insert(line, word)
 280                 end
 281         end
 282         table.insert(lines, line)
 283         return lines
 284 end
 285
 286 local function split_lines_and_words(text)
 287         if not text then return end
 288         text = string.gsub(text, "@KEYWORD", current_keyword)
 289         local lines = { }
 290         for _, line in ipairs(text:split("\n")) do
 291                 table.insert(lines, line:split(" "))
 292         end
 293         return lines
 294 end
 295
 296 local math_max = math.max
 297
 298 local function fill_line(x, y, w, c)
 299         c = c or "0"
 300         local tex = { }
 301         for xx = 0, math.max(0, w), COLORBGW do
 302                 table.insert(tex, (":%d,%d=slc_%s.png"):format(x + xx, y, c))
 303         end
 304         return table.concat(tex)
 305 end
 306
 307 local function make_line_texture(line, lineno)
 308
 309         local width = 0
 310         local maxw = 0
 311
 312         local words = { }
 313
 314         local cur_color = 0
 315
 316         -- We check which chars are available here.
 317         for word_i, word in ipairs(line) do
 318                 local chars = { }
 319                 local ch_offs = 0
 320                 local word_l = #word
 321                 local i = 1
 322                 while i <= word_l  do
 323                         local c = word:sub(i, i)
 324                         if c == "#" then
 325                                 local cc = tonumber(word:sub(i+1, i+1), 16)
 326                                 if cc then
 327                                         i = i + 1
 328                                         cur_color = cc
 329                                 end
 330                         else
 331                                 local w = charwidth[c]
 332                                 if w then
 333                                         width = width + w + 1
 334                                         if width >= (SIGN_WIDTH - charwidth[" "]) then
 335                                                 width = 0
 336                                         else
 337                                                 maxw = math_max(width, maxw)
 338                                         end
 339                                         if #chars < MAX_INPUT_CHARS then
 340                                                 table.insert(chars, {
 341                                                         off=ch_offs,
 342                                                         tex=FONT_FMT_SIMPLE:format(c:byte()),
 343                                                         col=("%X"):format(cur_color),
 344                                                 })
 345                                         end
 346                                         ch_offs = ch_offs + w
 347                                 end
 348                         end
 349                         i = i + 1
 350                 end
 351                 width = width + charwidth[" "] + 1
 352                 maxw = math_max(width, maxw)
 353                 table.insert(words, { chars=chars, w=ch_offs })
 354         end
 355
 356         -- Okay, we actually build the "line texture" here.
 357
 358         local texture = { }
 359
 360         local start_xpos = math.floor((SIGN_WIDTH - maxw) / 2)
 361
 362         local xpos = start_xpos
 363         local ypos = (LINE_HEIGHT * lineno)
 364
 365         cur_color = nil
 366
 367         for word_i, word in ipairs(words) do
 368                 local xoffs = (xpos - start_xpos)
 369                 if (xoffs > 0) and ((xoffs + word.w) > maxw) then
 370                         table.insert(texture, fill_line(xpos, ypos, maxw, "n"))
 371                         xpos = start_xpos
 372                         ypos = ypos + LINE_HEIGHT
 373                         lineno = lineno + 1
 374                         if lineno >= NUMBER_OF_LINES then break end
 375                         table.insert(texture, fill_line(xpos, ypos, maxw, cur_color))
 376                 end
 377                 for ch_i, ch in ipairs(word.chars) do
 378                         if ch.col ~= cur_color then
 379                                 cur_color = ch.col
 380                                 table.insert(texture, fill_line(xpos + ch.off, ypos, maxw, cur_color))
 381                         end
 382                         table.insert(texture, (":%d,%d=%s"):format(xpos + ch.off, ypos, ch.tex))
 383                 end
 384                 table.insert(texture, (":%d,%d=hdf_20.png"):format(xpos + word.w, ypos))
 385                 xpos = xpos + word.w + charwidth[" "]
 386                 if xpos >= (SIGN_WIDTH + charwidth[" "]) then break end
 387         end
 388
 389         table.insert(texture, fill_line(xpos, ypos, maxw, "n"))
 390         table.insert(texture, fill_line(start_xpos, ypos + LINE_HEIGHT, maxw, "n"))
 391
 392         return table.concat(texture), lineno
 393 end
 394
 395 local function make_sign_texture(lines)
 396         local texture = { ("[combine:%dx%d"):format(SIGN_WIDTH, LINE_HEIGHT * NUMBER_OF_LINES) }
 397         local lineno = 0
 398         for i = 1, #lines do
 399                 if lineno >= NUMBER_OF_LINES then break end
 400                 local linetex, ln = make_line_texture(lines[i], lineno)
 401                 table.insert(texture, linetex)
 402                 lineno = ln + 1
 403         end
 404         table.insert(texture, "^[makealpha:0,0,0")
 405         return table.concat(texture, "")
 406 end
 407
 408 local function set_obj_text(obj, text, new)
 409         local split = new and split_lines_and_words or split_lines_and_words_old
 410         obj:set_properties({
 411                 textures={make_sign_texture(split(text))},
 412                 visual_size = TEXT_SCALE,
 413         })
 414 end
 415
 416 signs_lib.construct_sign = function(pos, locked)
 417     local meta = minetest.get_meta(pos)
 418         meta:set_string(
 419                 "formspec",
 420                 "size[6,4]"..
 421                 "textarea[0,-0.3;6.5,3;text;;${text}]"..
 422                 "button_exit[2,3.4;2,1;ok;Write]"..
 423                 "background[-0.5,-0.5;7,5;bg_signs_lib.jpg]")
 424         meta:set_string("infotext", "")
 425 end
 426
 427 signs_lib.destruct_sign = function(pos)
 428     local objects = minetest.get_objects_inside_radius(pos, 0.5)
 429     for _, v in ipairs(objects) do
 430                 local e = v:get_luaentity()
 431         if e and e.name == "signs:text" then
 432             v:remove()
 433         end
 434     end
 435 end
 436
 437 local function make_infotext(text)
 438         text = trim_input(text)
 439         local lines = split_lines_and_words(text) or {}
 440         local lines2 = { }
 441         for _, line in ipairs(lines) do
 442                 table.insert(lines2, (table.concat(line, " "):gsub("#[0-9a-fA-F]", ""):gsub("##", "#")))
 443         end
 444         return table.concat(lines2, "\n")
 445 end
 446
 447 signs_lib.update_sign = function(pos, fields, owner)
 448
 449         -- First, check if the interact keyword from CWz's mod is being set,
 450         -- or has been changed since the last restart...
 451
 452         local meta = minetest.get_meta(pos)
 453         local stored_text = meta:get_string("text") or ""
 454         current_keyword = rawget(_G, "mki_interact_keyword") or current_keyword
 455
 456         if fields then -- ...we're editing the sign.
 457                 if fields.text and string.find(dump(fields.text), "@KEYWORD") then
 458                         meta:set_string("keyword", current_keyword)
 459                 else
 460                         meta:set_string("keyword", nil)
 461                 end
 462         elseif string.find(dump(stored_text), "@KEYWORD") then -- we need to check if the password is being set/changed
 463
 464                 local stored_keyword = meta:get_string("keyword")
 465                 if stored_keyword and stored_keyword ~= "" and stored_keyword ~= current_keyword then
 466                         signs_lib.destruct_sign(pos)
 467                         meta:set_string("keyword", current_keyword)
 468                         local ownstr = ""
 469                         if owner then ownstr = "Locked sign, owned by "..owner.."\n" end
 470                         meta:set_string("infotext", ownstr..string.gsub(make_infotext(stored_text), "@KEYWORD", current_keyword).." ")
 471                 end
 472         end
 473
 474         local new
 475
 476         if fields then
 477
 478                 fields.text = trim_input(fields.text)
 479
 480                 local ownstr = ""
 481                 if owner then ownstr = "Locked sign, owned by "..owner.."\n" end
 482
 483                 meta:set_string("infotext", ownstr..string.gsub(make_infotext(fields.text), "@KEYWORD", current_keyword).." ")
 484                 meta:set_string("text", fields.text)
 485
 486                 meta:set_int("__signslib_new_format", 1)
 487                 new = true
 488         else
 489                 new = (meta:get_int("__signslib_new_format") ~= 0)
 490         end
 491         local text = meta:get_string("text")
 492         if text == nil then return end
 493         local objects = minetest.get_objects_inside_radius(pos, 0.5)
 494         local found
 495         for _, v in ipairs(objects) do
 496                 local e = v:get_luaentity()
 497                 if e and e.name == "signs:text" then
 498                         if found then
 499                                 v:remove()
 500                         else
 501                                 set_obj_text(v, text, new)
 502                                 found = true
 503                         end
 504                 end
 505         end
 506         if found then
 507                 return
 508         end
 509
 510         -- if there is no entity
 511         local sign_info
 512         local signnode = minetest.get_node(pos)
 513         if signnode.name == "signs:sign_yard" then
 514                 sign_info = signs_lib.yard_sign_model.textpos[minetest.get_node(pos).param2 + 1]
 515         elseif signnode.name == "signs:sign_hanging" then
 516                 sign_info = signs_lib.hanging_sign_model.textpos[minetest.get_node(pos).param2 + 1]
 517         elseif string.find(signnode.name, "sign_wall") then
 518                 if signnode.name == default_sign
 519                   or signnode.name == default_sign_metal
 520                   or signnode.name == "locked_sign:sign_wall_locked" then
 521                         sign_info = signs_lib.regular_wall_sign_model.textpos[minetest.get_node(pos).param2 + 1]
 522                 else
 523                         sign_info = signs_lib.metal_wall_sign_model.textpos[minetest.get_node(pos).param2 + 1]
 524                 end
 525         else -- ...it must be a sign on a fence post.
 526                 sign_info = signs_lib.sign_post_model.textpos[minetest.get_node(pos).param2 + 1]
 527         end
 528         if sign_info == nil then
 529                 return
 530         end
 531         local text = minetest.add_entity({x = pos.x + sign_info.delta.x,
 532                                                                                 y = pos.y + sign_info.delta.y,
 533                                                                                 z = pos.z + sign_info.delta.z}, "signs:text")
 534         text:setyaw(sign_info.yaw)
 535 end
 536
 537 -- What kind of sign do we need to place, anyway?
 538
 539 function signs_lib.determine_sign_type(itemstack, placer, pointed_thing, locked)
 540         local name
 541         name = minetest.get_node(pointed_thing.under).name
 542         if fences_with_sign[name] then
 543                 if minetest.is_protected(pointed_thing.under, placer:get_player_name()) then
 544                         minetest.record_protection_violation(pointed_thing.under,
 545                                 placer:get_player_name())
 546                         return itemstack
 547                 end
 548         else
 549                 name = minetest.get_node(pointed_thing.above).name
 550                 local def = minetest.registered_nodes[name]
 551                 if not def.buildable_to then
 552                         return itemstack
 553                 end
 554                 if minetest.is_protected(pointed_thing.above, placer:get_player_name()) then
 555                         minetest.record_protection_violation(pointed_thing.above,
 556                                 placer:get_player_name())
 557                         return itemstack
 558                 end
 559         end
 560
 561         local node=minetest.get_node(pointed_thing.under)
 562
 563         if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].on_rightclick then
 564                 return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack)
 565         else
 566                 local above = pointed_thing.above
 567                 local under = pointed_thing.under
 568                 local dir = {x = under.x - above.x,
 569                                          y = under.y - above.y,
 570                                          z = under.z - above.z}
 571
 572                 local wdir = minetest.dir_to_wallmounted(dir)
 573
 574                 local placer_pos = placer:getpos()
 575                 if placer_pos then
 576                         dir = {
 577                                 x = above.x - placer_pos.x,
 578                                 y = above.y - placer_pos.y,
 579                                 z = above.z - placer_pos.z
 580                         }
 581                 end
 582
 583                 local fdir = minetest.dir_to_facedir(dir)
 584                 local pt_name = minetest.get_node(under).name
 585                 local signname = itemstack:get_name()
 586
 587                 if fences_with_sign[pt_name] and signname == default_sign then
 588                         minetest.add_node(under, {name = fences_with_sign[pt_name], param2 = fdir})
 589                 elseif wdir == 0 and signname == default_sign then
 590                         minetest.add_node(above, {name = "signs:sign_hanging", param2 = fdir})
 591                 elseif wdir == 1 and signname == default_sign then
 592                         minetest.add_node(above, {name = "signs:sign_yard", param2 = fdir})
 593                 elseif signname == default_sign_metal then
 594                         minetest.add_node(above, {name = signname, param2 = wdir })
 595                 elseif signname ~= default_sign
 596                   and signname ~= default_sign_metal
 597                   and signname ~= "locked_sign:sign_wall_locked" then -- it's a signs_lib colored metal wall sign.
 598                         minetest.add_node(above, {name = signname, param2 = fdir})
 599                 else -- it must be a default or locked wooden wall sign
 600                         minetest.add_node(above, {name = signname, param2 = wdir }) -- note it's wallmounted here!
 601                         if locked then
 602                                 local meta = minetest.get_meta(above)
 603                                 local owner = placer:get_player_name()
 604                                 meta:set_string("owner", owner)
 605                         end
 606                 end
 607
 608                 if not signs_lib.expect_infinite_stacks then
 609                         itemstack:take_item()
 610                 end
 611                 return itemstack
 612         end
 613 end
 614
 615 function signs_lib.receive_fields(pos, formname, fields, sender, lock)
 616         if minetest.is_protected(pos, sender:get_player_name()) then
 617                 minetest.record_protection_violation(pos,
 618                         sender:get_player_name())
 619                 return
 620         end
 621         local lockstr = lock and "locked " or ""
 622         if fields and fields.text and fields.ok then
 623                 minetest.log("action", S("%s wrote \"%s\" to "..lockstr.."sign at %s"):format(
 624                         (sender:get_player_name() or ""),
 625                         fields.text,
 626                         minetest.pos_to_string(pos)
 627                 ))
 628                 if lock then
 629                         signs_lib.update_sign(pos, fields, sender:get_player_name())
 630                 else
 631                         signs_lib.update_sign(pos, fields)
 632                 end
 633         end
 634 end
 635
 636 minetest.register_node(":"..default_sign, {
 637         description = S("Sign"),
 638         inventory_image = default_sign_image,
 639         wield_image = default_sign_image,
 640         node_placement_prediction = "",
 641         sunlight_propagates = true,
 642         paramtype = "light",
 643         paramtype2 = "wallmounted",
 644         drawtype = "nodebox",
 645         node_box = signs_lib.regular_wall_sign_model.nodebox,
 646         tiles = {"signs_wall_sign.png"},
 647         groups = sign_groups,
 648
 649         on_place = function(itemstack, placer, pointed_thing)
 650                 return signs_lib.determine_sign_type(itemstack, placer, pointed_thing)
 651         end,
 652         on_construct = function(pos)
 653                 signs_lib.construct_sign(pos)
 654         end,
 655         on_destruct = function(pos)
 656                 signs_lib.destruct_sign(pos)
 657         end,
 658         on_receive_fields = function(pos, formname, fields, sender)
 659                 signs_lib.receive_fields(pos, formname, fields, sender)
 660         end,
 661         on_punch = function(pos, node, puncher)
 662                 signs_lib.update_sign(pos)
 663         end,
 664         on_rotate = signs_lib.wallmounted_rotate
 665 })
 666
 667 minetest.register_node(":signs:sign_yard", {
 668     paramtype = "light",
 669         sunlight_propagates = true,
 670     paramtype2 = "facedir",
 671     drawtype = "nodebox",
 672     node_box = signs_lib.yard_sign_model.nodebox,
 673         selection_box = {
 674                 type = "fixed",
 675                 fixed = {-0.4375, -0.5, -0.0625, 0.4375, 0.375, 0}
 676         },
 677     tiles = {"signs_top.png", "signs_bottom.png", "signs_side.png", "signs_side.png", "signs_back.png", "signs_front.png"},
 678     groups = {choppy=2, dig_immediate=2},
 679     drop = default_sign,
 680
 681     on_construct = function(pos)
 682         signs_lib.construct_sign(pos)
 683     end,
 684     on_destruct = function(pos)
 685         signs_lib.destruct_sign(pos)
 686     end,
 687         on_receive_fields = function(pos, formname, fields, sender)
 688                 signs_lib.receive_fields(pos, formname, fields, sender)
 689         end,
 690         on_punch = function(pos, node, puncher)
 691                 signs_lib.update_sign(pos)
 692         end,
 693 })
 694
 695 minetest.register_node(":signs:sign_hanging", {
 696     paramtype = "light",
 697         sunlight_propagates = true,
 698     paramtype2 = "facedir",
 699     drawtype = "nodebox",
 700     node_box = signs_lib.hanging_sign_model.nodebox,
 701     selection_box = {
 702                 type = "fixed",
 703                 fixed = {-0.45, -0.275, -0.049, 0.45, 0.5, 0.049}
 704         },
 705     tiles = {
 706                 "signs_hanging_top.png",
 707                 "signs_hanging_bottom.png",
 708                 "signs_hanging_side.png",
 709                 "signs_hanging_side.png",
 710                 "signs_hanging_back.png",
 711                 "signs_hanging_front.png"
 712         },
 713     groups = {choppy=2, dig_immediate=2},
 714     drop = default_sign,
 715
 716     on_construct = function(pos)
 717         signs_lib.construct_sign(pos)
 718     end,
 719     on_destruct = function(pos)
 720         signs_lib.destruct_sign(pos)
 721     end,
 722         on_receive_fields = function(pos, formname, fields, sender)
 723                 signs_lib.receive_fields(pos, formname, fields, sender)
 724         end,
 725         on_punch = function(pos, node, puncher)
 726                 signs_lib.update_sign(pos)
 727         end,
 728 })
 729
 730 minetest.register_node(":signs:sign_post", {
 731     paramtype = "light",
 732         sunlight_propagates = true,
 733     paramtype2 = "facedir",
 734     drawtype = "nodebox",
 735     node_box = signs_lib.sign_post_model.nodebox,
 736     tiles = {
 737                 "signs_post_top.png",
 738                 "signs_post_bottom.png",
 739                 "signs_post_side.png",
 740                 "signs_post_side.png",
 741                 "signs_post_back.png",
 742                 "signs_post_front.png",
 743         },
 744     groups = {choppy=2, dig_immediate=2},
 745     drop = {
 746                 max_items = 2,
 747                 items = {
 748                         { items = { default_sign }},
 749                         { items = { "default:fence_wood" }},
 750                 },
 751     },
 752 })
 753
 754 -- Locked wall sign
 755
 756 minetest.register_privilege("sign_editor", "Can edit all locked signs")
 757
 758 minetest.register_node(":locked_sign:sign_wall_locked", {
 759         description = S("Sign"),
 760         inventory_image = "signs_locked_inv.png",
 761         wield_image = "signs_locked_inv.png",
 762         node_placement_prediction = "",
 763         sunlight_propagates = true,
 764         paramtype = "light",
 765         paramtype2 = "wallmounted",
 766         drawtype = "nodebox",
 767         node_box = signs_lib.regular_wall_sign_model.nodebox,
 768         tiles = { "signs_wall_sign_locked.png" },
 769         groups = sign_groups,
 770         on_place = function(itemstack, placer, pointed_thing)
 771                 return signs_lib.determine_sign_type(itemstack, placer, pointed_thing, true)
 772         end,
 773         on_construct = function(pos)
 774                 signs_lib.construct_sign(pos, true)
 775         end,
 776         on_destruct = function(pos)
 777                 signs_lib.destruct_sign(pos)
 778         end,
 779         on_receive_fields = function(pos, formname, fields, sender)
 780                 local meta = minetest.get_meta(pos)
 781                 local owner = meta:get_string("owner")
 782                 local pname = sender:get_player_name() or ""
 783                 if pname ~= owner and pname ~= minetest.setting_get("name")
 784                   and not minetest.check_player_privs(pname, {sign_editor=true}) then
 785                         return
 786                 end
 787                 signs_lib.receive_fields(pos, formname, fields, sender, true)
 788         end,
 789         on_punch = function(pos, node, puncher)
 790                 signs_lib.update_sign(pos)
 791         end,
 792         can_dig = function(pos, player)
 793                 local meta = minetest.get_meta(pos)
 794                 local owner = meta:get_string("owner")
 795                 local pname = player:get_player_name()
 796                 return pname == owner or pname == minetest.setting_get("name")
 797                         or minetest.check_player_privs(pname, {sign_editor=true})
 798         end,
 799         on_rotate = signs_lib.wallmounted_rotate
 800 })
 801
 802 -- default metal sign, if defined
 803
 804 if minetest.registered_nodes["default:sign_wall_steel"] then
 805         minetest.register_node(":"..default_sign_metal, {
 806                 description = S("Sign"),
 807                 inventory_image = default_sign_metal_image,
 808                 wield_image = default_sign_metal_image,
 809                 node_placement_prediction = "",
 810                 sunlight_propagates = true,
 811                 paramtype = "light",
 812                 paramtype2 = "wallmounted",
 813                 drawtype = "nodebox",
 814                 node_box = signs_lib.regular_wall_sign_model.nodebox,
 815                 tiles = {"signs_wall_sign_metal.png"},
 816                 groups = sign_groups,
 817
 818                 on_place = function(itemstack, placer, pointed_thing)
 819                         return signs_lib.determine_sign_type(itemstack, placer, pointed_thing)
 820                 end,
 821                 on_construct = function(pos)
 822                         signs_lib.construct_sign(pos)
 823                 end,
 824                 on_destruct = function(pos)
 825                         signs_lib.destruct_sign(pos)
 826                 end,
 827                 on_receive_fields = function(pos, formname, fields, sender)
 828                         signs_lib.receive_fields(pos, formname, fields, sender)
 829                 end,
 830                 on_punch = function(pos, node, puncher)
 831                         signs_lib.update_sign(pos)
 832                 end,
 833                 on_rotate = signs_lib.wallmounted_rotate
 834         })
 835 end
 836
 837 -- metal, colored signs
 838
 839 local sign_colors = { "green", "yellow", "red", "white_red", "white_black", "orange", "blue", "brown" }
 840
 841 for _, color in ipairs(sign_colors) do
 842         minetest.register_node(":signs:sign_wall_"..color, {
 843                 description = S("Sign ("..color..", metal)"),
 844                 inventory_image = "signs_"..color.."_inv.png",
 845                 wield_image = "signs_"..color.."_inv.png",
 846                 node_placement_prediction = "",
 847                 paramtype = "light",
 848                 sunlight_propagates = true,
 849                 paramtype2 = "facedir",
 850                 drawtype = "nodebox",
 851                 node_box = signs_lib.metal_wall_sign_model.nodebox,
 852                 tiles = {
 853                         "signs_metal_tb.png",
 854                         "signs_metal_tb.png",
 855                         "signs_metal_sides.png",
 856                         "signs_metal_sides.png",
 857                         "signs_metal_back.png",
 858                         "signs_"..color.."_front.png"
 859                 },
 860                 groups = sign_groups,
 861                 on_place = function(itemstack, placer, pointed_thing)
 862                         return signs_lib.determine_sign_type(itemstack, placer, pointed_thing)
 863                 end,
 864                 on_construct = function(pos)
 865                         signs_lib.construct_sign(pos)
 866                 end,
 867                 on_destruct = function(pos)
 868                         signs_lib.destruct_sign(pos)
 869                 end,
 870                 on_receive_fields = function(pos, formname, fields, sender)
 871                         signs_lib.receive_fields(pos, formname, fields, sender)
 872                 end,
 873                 on_punch = function(pos, node, puncher)
 874                         signs_lib.update_sign(pos)
 875                 end,
 876         })
 877 end
 878
 879 local signs_text_on_activate
 880
 881 signs_text_on_activate = function(self)
 882         local meta = minetest.get_meta(self.object:getpos())
 883         local text = meta:get_string("text")
 884         local new = (meta:get_int("__signslib_new_format") ~= 0)
 885         if text then
 886                 text = trim_input(text)
 887                 set_obj_text(self.object, text, new)
 888         end
 889 end
 890
 891 minetest.register_entity(":signs:text", {
 892     collisionbox = { 0, 0, 0, 0, 0, 0 },
 893     visual = "upright_sprite",
 894     textures = {},
 895
 896         on_activate = signs_text_on_activate,
 897 })
 898
 899 -- And the good stuff here! :-)
 900
 901 function signs_lib.register_fence_with_sign(fencename, fencewithsignname)
 902     local def = minetest.registered_nodes[fencename]
 903     local def_sign = minetest.registered_nodes[fencewithsignname]
 904     if not (def and def_sign) then
 905         minetest.log("warning", "[signs_lib] Attempt to register unknown node as fence")
 906         return
 907     end
 908     def = signs_lib.table_copy(def)
 909     def_sign = signs_lib.table_copy(def_sign)
 910     fences_with_sign[fencename] = fencewithsignname
 911
 912     def_sign.on_place = function(itemstack, placer, pointed_thing, ...)
 913                 local node_above = minetest.get_node_or_nil(pointed_thing.above)
 914                 local node_under = minetest.get_node_or_nil(pointed_thing.under)
 915                 local def_above = node_above and minetest.registered_nodes[node_above.name]
 916                 local def_under = node_under and minetest.registered_nodes[node_under.name]
 917                 local fdir = minetest.dir_to_facedir(placer:get_look_dir())
 918                 local playername = placer:get_player_name()
 919
 920                 if minetest.is_protected(pointed_thing.under, playername) then
 921                         minetest.record_protection_violation(pointed_thing.under, playername)
 922                         return itemstack
 923                 end
 924
 925                 if minetest.is_protected(pointed_thing.above, playername) then
 926                         minetest.record_protection_violation(pointed_thing.above, playername)
 927                         return itemstack
 928                 end
 929
 930                 if def_under and def_under.on_rightclick then
 931                         return def_under.on_rightclick(pointed_thing.under, node_under, placer, itemstack) or itemstack
 932                 elseif def_under and def_under.buildable_to then
 933                         minetest.add_node(pointed_thing.under, {name = fencename, param2 = fdir})
 934                         if not signs_lib.expect_infinite_stacks then
 935                                 itemstack:take_item()
 936                         end
 937                         placer:set_wielded_item(itemstack)
 938                 elseif def_above and def_above.buildable_to then
 939                         minetest.add_node(pointed_thing.above, {name = fencename, param2 = fdir})
 940                         if not signs_lib.expect_infinite_stacks then
 941                                 itemstack:take_item()
 942                         end
 943                         placer:set_wielded_item(itemstack)
 944                 end
 945                 return itemstack
 946         end
 947         def_sign.on_construct = function(pos, ...)
 948                 signs_lib.construct_sign(pos)
 949         end
 950         def_sign.on_destruct = function(pos, ...)
 951                 signs_lib.destruct_sign(pos)
 952         end
 953         def_sign.on_receive_fields = function(pos, formname, fields, sender)
 954                 signs_lib.receive_fields(pos, formname, fields, sender)
 955         end
 956         def_sign.on_punch = function(pos, node, puncher, ...)
 957                 signs_lib.update_sign(pos)
 958         end
 959         local fencename = fencename
 960         def_sign.after_dig_node = function(pos, node, ...)
 961             node.name = fencename
 962             minetest.add_node(pos, node)
 963         end
 964     def_sign.drop = default_sign
 965         minetest.register_node(":"..fencename, def)
 966         minetest.register_node(":"..fencewithsignname, def_sign)
 967         table.insert(signs_lib.sign_node_list, fencewithsignname)
 968         minetest.log("verbose", S("Registered %s and %s"):format(fencename, fencewithsignname))
 969 end
 970
 971 build_char_db()
 972
 973 minetest.register_alias("homedecor:fence_wood_with_sign", "signs:sign_post")
 974 minetest.register_alias("sign_wall_locked", "locked_sign:sign_wall_locked")
 975
 976 signs_lib.register_fence_with_sign("default:fence_wood", "signs:sign_post")
 977
 978 -- restore signs' text after /clearobjects and the like, the next time
 979 -- a block is reloaded by the server.
 980
 981 minetest.register_lbm({
 982         nodenames = signs_lib.sign_node_list,
 983         name = "signs_lib:restore_sign_text",
 984         label = "Restore sign text",
 985         run_at_every_load = true,
 986         action = function(pos, node)
 987                 signs_lib.update_sign(pos)
 988         end
 989 })
 990
 991 -- locked sign
 992
 993 minetest.register_craft({
 994         output = "locked_sign:sign_wall_locked",
 995         recipe = {
 996                 {"group:wood", "group:wood", "group:wood"},
 997                 {"group:wood", "group:wood", "default:steel_ingot"},
 998                 {"", "group:stick", ""},
 999         }
1000 })
1001
1002 --Alternate recipes.
1003
1004 minetest.register_craft({
1005         output = "locked_sign:sign_wall_locked",
1006         recipe = {
1007                 {default_sign},
1008                 {"default:steel_ingot"},
1009     },
1010 })
1011
1012 minetest.register_craft({
1013         output = "locked_sign:sign_wall_locked",
1014         recipe = {
1015                 {default_sign_metal},
1016                 {"default:steel_ingot"},
1017     },
1018 })
1019
1020 -- craft recipes for the metal signs
1021
1022 minetest.register_craft( {
1023         output = "signs:sign_wall_green",
1024         recipe = {
1025                         { "dye:dark_green", "dye:white", "dye:dark_green" },
1026                         { "", default_sign_metal, "" }
1027         },
1028 })
1029
1030 minetest.register_craft( {
1031         output = "signs:sign_wall_green 2",
1032         recipe = {
1033                         { "dye:dark_green", "dye:white", "dye:dark_green" },
1034                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1035         },
1036 })
1037
1038 minetest.register_craft( {
1039         output = "signs:sign_wall_yellow",
1040         recipe = {
1041                         { "dye:yellow", "dye:black", "dye:yellow" },
1042                         { "", default_sign_metal, "" }
1043         },
1044 })
1045
1046 minetest.register_craft( {
1047         output = "signs:sign_wall_yellow 2",
1048         recipe = {
1049                         { "dye:yellow", "dye:black", "dye:yellow" },
1050                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1051         },
1052 })
1053
1054 minetest.register_craft( {
1055         output = "signs:sign_wall_red",
1056         recipe = {
1057                         { "dye:red", "dye:white", "dye:red" },
1058                         { "", default_sign_metal, "" }
1059         },
1060 })
1061
1062 minetest.register_craft( {
1063         output = "signs:sign_wall_red 2",
1064         recipe = {
1065                         { "dye:red", "dye:white", "dye:red" },
1066                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1067         },
1068 })
1069
1070 minetest.register_craft( {
1071         output = "signs:sign_wall_white_red",
1072         recipe = {
1073                         { "dye:white", "dye:red", "dye:white" },
1074                         { "", default_sign_metal, "" }
1075         },
1076 })
1077
1078 minetest.register_craft( {
1079         output = "signs:sign_wall_white_red 2",
1080         recipe = {
1081                         { "dye:white", "dye:red", "dye:white" },
1082                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1083         },
1084 })
1085
1086 minetest.register_craft( {
1087         output = "signs:sign_wall_white_black",
1088         recipe = {
1089                         { "dye:white", "dye:black", "dye:white" },
1090                         { "", default_sign_metal, "" }
1091         },
1092 })
1093
1094 minetest.register_craft( {
1095         output = "signs:sign_wall_white_black 2",
1096         recipe = {
1097                         { "dye:white", "dye:black", "dye:white" },
1098                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1099         },
1100 })
1101
1102 minetest.register_craft( {
1103         output = "signs:sign_wall_orange",
1104         recipe = {
1105                         { "dye:orange", "dye:black", "dye:orange" },
1106                         { "", default_sign_metal, "" }
1107         },
1108 })
1109
1110 minetest.register_craft( {
1111         output = "signs:sign_wall_orange 2",
1112         recipe = {
1113                         { "dye:orange", "dye:black", "dye:orange" },
1114                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1115         },
1116 })
1117
1118 minetest.register_craft( {
1119         output = "signs:sign_wall_blue",
1120         recipe = {
1121                         { "dye:blue", "dye:white", "dye:blue" },
1122                         { "", default_sign_metal, "" }
1123         },
1124 })
1125
1126 minetest.register_craft( {
1127         output = "signs:sign_wall_blue 2",
1128         recipe = {
1129                         { "dye:blue", "dye:white", "dye:blue" },
1130                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1131         },
1132 })
1133
1134 minetest.register_craft( {
1135         output = "signs:sign_wall_brown",
1136         recipe = {
1137                         { "dye:brown", "dye:white", "dye:brown" },
1138                         { "", default_sign_metal, "" }
1139         },
1140 })
1141
1142 minetest.register_craft( {
1143         output = "signs:sign_wall_brown 2",
1144         recipe = {
1145                         { "dye:brown", "dye:white", "dye:brown" },
1146                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1147         },
1148 })
1149
1150 if minetest.setting_get("log_mods") then
1151         minetest.log("action", S("signs loaded"))
1152 end