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         print("called signs_lib.determine_sign_type")
 541         local name
 542         name = minetest.get_node(pointed_thing.under).name
 543         if fences_with_sign[name] then
 544                 if minetest.is_protected(pointed_thing.under, placer:get_player_name()) then
 545                         minetest.record_protection_violation(pointed_thing.under,
 546                                 placer:get_player_name())
 547                         return itemstack
 548                 end
 549         else
 550                 name = minetest.get_node(pointed_thing.above).name
 551                 local def = minetest.registered_nodes[name]
 552                 if not def.buildable_to then
 553                         return itemstack
 554                 end
 555                 if minetest.is_protected(pointed_thing.above, placer:get_player_name()) then
 556                         minetest.record_protection_violation(pointed_thing.above,
 557                                 placer:get_player_name())
 558                         return itemstack
 559                 end
 560         end
 561
 562         print("protection and position okay")
 563         local node=minetest.get_node(pointed_thing.under)
 564
 565         if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].on_rightclick then
 566                 return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack)
 567         else
 568                 print("target didn't have rightclick")
 569                 local above = pointed_thing.above
 570                 local under = pointed_thing.under
 571                 local dir = {x = under.x - above.x,
 572                                          y = under.y - above.y,
 573                                          z = under.z - above.z}
 574
 575                 local wdir = minetest.dir_to_wallmounted(dir)
 576
 577                 local placer_pos = placer:getpos()
 578                 if placer_pos then
 579                         dir = {
 580                                 x = above.x - placer_pos.x,
 581                                 y = above.y - placer_pos.y,
 582                                 z = above.z - placer_pos.z
 583                         }
 584                 end
 585
 586                 local fdir = minetest.dir_to_facedir(dir)
 587                 print("facedir = "..fdir)
 588                 local pt_name = minetest.get_node(under).name
 589                 local signname = itemstack:get_name()
 590
 591                 if fences_with_sign[pt_name] and signname == default_sign then
 592                         minetest.add_node(under, {name = fences_with_sign[pt_name], param2 = fdir})
 593                 elseif wdir == 0 and signname == default_sign then
 594                         minetest.add_node(above, {name = "signs:sign_hanging", param2 = fdir})
 595                 elseif wdir == 1 and signname == default_sign then
 596                         minetest.add_node(above, {name = "signs:sign_yard", param2 = fdir})
 597                 elseif signname == default_sign_metal then
 598                         minetest.add_node(above, {name = signname, param2 = wdir })
 599                         print("line 597")
 600                 elseif signname ~= default_sign
 601                   and signname ~= default_sign_metal
 602                   and signname ~= "locked_sign:sign_wall_locked" then -- it's a signs_lib colored metal wall sign.
 603                         minetest.add_node(above, {name = signname, param2 = fdir})
 604                         print("line 602")
 605                 else -- it must be a default or locked wooden wall sign
 606                         minetest.add_node(above, {name = signname, param2 = wdir }) -- note it's wallmounted here!
 607                         print("line 605")
 608                         if locked then
 609                                 local meta = minetest.get_meta(above)
 610                                 local owner = placer:get_player_name()
 611                                 meta:set_string("owner", owner)
 612                         end
 613                 end
 614
 615                 if not signs_lib.expect_infinite_stacks then
 616                         itemstack:take_item()
 617                 end
 618                 return itemstack
 619         end
 620 end
 621
 622 function signs_lib.receive_fields(pos, formname, fields, sender, lock)
 623         if minetest.is_protected(pos, sender:get_player_name()) then
 624                 minetest.record_protection_violation(pos,
 625                         sender:get_player_name())
 626                 return
 627         end
 628         local lockstr = lock and "locked " or ""
 629         if fields and fields.text and fields.ok then
 630                 minetest.log("action", S("%s wrote \"%s\" to "..lockstr.."sign at %s"):format(
 631                         (sender:get_player_name() or ""),
 632                         fields.text,
 633                         minetest.pos_to_string(pos)
 634                 ))
 635                 if lock then
 636                         signs_lib.update_sign(pos, fields, sender:get_player_name())
 637                 else
 638                         signs_lib.update_sign(pos, fields)
 639                 end
 640         end
 641 end
 642
 643 minetest.register_node(":"..default_sign, {
 644         description = S("Sign"),
 645         inventory_image = default_sign_image,
 646         wield_image = default_sign_image,
 647         node_placement_prediction = "",
 648         sunlight_propagates = true,
 649         paramtype = "light",
 650         paramtype2 = "wallmounted",
 651         drawtype = "nodebox",
 652         node_box = signs_lib.regular_wall_sign_model.nodebox,
 653         tiles = {"signs_wall_sign.png"},
 654         groups = sign_groups,
 655
 656         on_place = function(itemstack, placer, pointed_thing)
 657                 return signs_lib.determine_sign_type(itemstack, placer, pointed_thing)
 658         end,
 659         on_construct = function(pos)
 660                 signs_lib.construct_sign(pos)
 661         end,
 662         on_destruct = function(pos)
 663                 signs_lib.destruct_sign(pos)
 664         end,
 665         on_receive_fields = function(pos, formname, fields, sender)
 666                 signs_lib.receive_fields(pos, formname, fields, sender)
 667         end,
 668         on_punch = function(pos, node, puncher)
 669                 signs_lib.update_sign(pos)
 670         end,
 671         on_rotate = signs_lib.wallmounted_rotate
 672 })
 673
 674 minetest.register_node(":signs:sign_yard", {
 675     paramtype = "light",
 676         sunlight_propagates = true,
 677     paramtype2 = "facedir",
 678     drawtype = "nodebox",
 679     node_box = signs_lib.yard_sign_model.nodebox,
 680         selection_box = {
 681                 type = "fixed",
 682                 fixed = {-0.4375, -0.5, -0.0625, 0.4375, 0.375, 0}
 683         },
 684     tiles = {"signs_top.png", "signs_bottom.png", "signs_side.png", "signs_side.png", "signs_back.png", "signs_front.png"},
 685     groups = {choppy=2, dig_immediate=2},
 686     drop = default_sign,
 687
 688     on_construct = function(pos)
 689         signs_lib.construct_sign(pos)
 690     end,
 691     on_destruct = function(pos)
 692         signs_lib.destruct_sign(pos)
 693     end,
 694         on_receive_fields = function(pos, formname, fields, sender)
 695                 signs_lib.receive_fields(pos, formname, fields, sender)
 696         end,
 697         on_punch = function(pos, node, puncher)
 698                 signs_lib.update_sign(pos)
 699         end,
 700 })
 701
 702 minetest.register_node(":signs:sign_hanging", {
 703     paramtype = "light",
 704         sunlight_propagates = true,
 705     paramtype2 = "facedir",
 706     drawtype = "nodebox",
 707     node_box = signs_lib.hanging_sign_model.nodebox,
 708     selection_box = {
 709                 type = "fixed",
 710                 fixed = {-0.45, -0.275, -0.049, 0.45, 0.5, 0.049}
 711         },
 712     tiles = {
 713                 "signs_hanging_top.png",
 714                 "signs_hanging_bottom.png",
 715                 "signs_hanging_side.png",
 716                 "signs_hanging_side.png",
 717                 "signs_hanging_back.png",
 718                 "signs_hanging_front.png"
 719         },
 720     groups = {choppy=2, dig_immediate=2},
 721     drop = default_sign,
 722
 723     on_construct = function(pos)
 724         signs_lib.construct_sign(pos)
 725     end,
 726     on_destruct = function(pos)
 727         signs_lib.destruct_sign(pos)
 728     end,
 729         on_receive_fields = function(pos, formname, fields, sender)
 730                 signs_lib.receive_fields(pos, formname, fields, sender)
 731         end,
 732         on_punch = function(pos, node, puncher)
 733                 signs_lib.update_sign(pos)
 734         end,
 735 })
 736
 737 minetest.register_node(":signs:sign_post", {
 738     paramtype = "light",
 739         sunlight_propagates = true,
 740     paramtype2 = "facedir",
 741     drawtype = "nodebox",
 742     node_box = signs_lib.sign_post_model.nodebox,
 743     tiles = {
 744                 "signs_post_top.png",
 745                 "signs_post_bottom.png",
 746                 "signs_post_side.png",
 747                 "signs_post_side.png",
 748                 "signs_post_back.png",
 749                 "signs_post_front.png",
 750         },
 751     groups = {choppy=2, dig_immediate=2},
 752     drop = {
 753                 max_items = 2,
 754                 items = {
 755                         { items = { default_sign }},
 756                         { items = { "default:fence_wood" }},
 757                 },
 758     },
 759 })
 760
 761 -- Locked wall sign
 762
 763 minetest.register_privilege("sign_editor", "Can edit all locked signs")
 764
 765 minetest.register_node(":locked_sign:sign_wall_locked", {
 766         description = S("Sign"),
 767         inventory_image = "signs_locked_inv.png",
 768         wield_image = "signs_locked_inv.png",
 769         node_placement_prediction = "",
 770         sunlight_propagates = true,
 771         paramtype = "light",
 772         paramtype2 = "wallmounted",
 773         drawtype = "nodebox",
 774         node_box = signs_lib.regular_wall_sign_model.nodebox,
 775         tiles = { "signs_wall_sign_locked.png" },
 776         groups = sign_groups,
 777         on_place = function(itemstack, placer, pointed_thing)
 778                 return signs_lib.determine_sign_type(itemstack, placer, pointed_thing, true)
 779         end,
 780         on_construct = function(pos)
 781                 signs_lib.construct_sign(pos, true)
 782         end,
 783         on_destruct = function(pos)
 784                 signs_lib.destruct_sign(pos)
 785         end,
 786         on_receive_fields = function(pos, formname, fields, sender)
 787                 local meta = minetest.get_meta(pos)
 788                 local owner = meta:get_string("owner")
 789                 local pname = sender:get_player_name() or ""
 790                 if pname ~= owner and pname ~= minetest.setting_get("name")
 791                   and not minetest.check_player_privs(pname, {sign_editor=true}) then
 792                         return
 793                 end
 794                 signs_lib.receive_fields(pos, formname, fields, sender, true)
 795         end,
 796         on_punch = function(pos, node, puncher)
 797                 signs_lib.update_sign(pos)
 798         end,
 799         can_dig = function(pos, player)
 800                 local meta = minetest.get_meta(pos)
 801                 local owner = meta:get_string("owner")
 802                 local pname = player:get_player_name()
 803                 return pname == owner or pname == minetest.setting_get("name")
 804                         or minetest.check_player_privs(pname, {sign_editor=true})
 805         end,
 806         on_rotate = signs_lib.wallmounted_rotate
 807 })
 808
 809 -- default metal sign, if defined
 810
 811 if minetest.registered_nodes["default:sign_wall_steel"] then
 812         minetest.register_node(":"..default_sign_metal, {
 813                 description = S("Sign"),
 814                 inventory_image = default_sign_metal_image,
 815                 wield_image = default_sign_metal_image,
 816                 node_placement_prediction = "",
 817                 sunlight_propagates = true,
 818                 paramtype = "light",
 819                 paramtype2 = "wallmounted",
 820                 drawtype = "nodebox",
 821                 node_box = signs_lib.regular_wall_sign_model.nodebox,
 822                 tiles = {"signs_wall_sign_metal.png"},
 823                 groups = sign_groups,
 824
 825                 on_place = function(itemstack, placer, pointed_thing)
 826                         return signs_lib.determine_sign_type(itemstack, placer, pointed_thing)
 827                 end,
 828                 on_construct = function(pos)
 829                         signs_lib.construct_sign(pos)
 830                 end,
 831                 on_destruct = function(pos)
 832                         signs_lib.destruct_sign(pos)
 833                 end,
 834                 on_receive_fields = function(pos, formname, fields, sender)
 835                         signs_lib.receive_fields(pos, formname, fields, sender)
 836                 end,
 837                 on_punch = function(pos, node, puncher)
 838                         signs_lib.update_sign(pos)
 839                 end,
 840                 on_rotate = signs_lib.wallmounted_rotate
 841         })
 842 end
 843
 844 -- metal, colored signs
 845
 846 local sign_colors = { "green", "yellow", "red", "white_red", "white_black", "orange", "blue", "brown" }
 847
 848 for _, color in ipairs(sign_colors) do
 849         minetest.register_node(":signs:sign_wall_"..color, {
 850                 description = S("Sign ("..color..", metal)"),
 851                 inventory_image = "signs_"..color.."_inv.png",
 852                 wield_image = "signs_"..color.."_inv.png",
 853                 node_placement_prediction = "",
 854                 paramtype = "light",
 855                 sunlight_propagates = true,
 856                 paramtype2 = "facedir",
 857                 drawtype = "nodebox",
 858                 node_box = signs_lib.metal_wall_sign_model.nodebox,
 859                 tiles = {
 860                         "signs_metal_tb.png",
 861                         "signs_metal_tb.png",
 862                         "signs_metal_sides.png",
 863                         "signs_metal_sides.png",
 864                         "signs_metal_back.png",
 865                         "signs_"..color.."_front.png"
 866                 },
 867                 groups = sign_groups,
 868                 on_place = function(itemstack, placer, pointed_thing)
 869                         return signs_lib.determine_sign_type(itemstack, placer, pointed_thing)
 870                 end,
 871                 on_construct = function(pos)
 872                         signs_lib.construct_sign(pos)
 873                 end,
 874                 on_destruct = function(pos)
 875                         signs_lib.destruct_sign(pos)
 876                 end,
 877                 on_receive_fields = function(pos, formname, fields, sender)
 878                         signs_lib.receive_fields(pos, formname, fields, sender)
 879                 end,
 880                 on_punch = function(pos, node, puncher)
 881                         signs_lib.update_sign(pos)
 882                 end,
 883         })
 884 end
 885
 886 local signs_text_on_activate
 887
 888 signs_text_on_activate = function(self)
 889         local meta = minetest.get_meta(self.object:getpos())
 890         local text = meta:get_string("text")
 891         local new = (meta:get_int("__signslib_new_format") ~= 0)
 892         if text then
 893                 text = trim_input(text)
 894                 set_obj_text(self.object, text, new)
 895         end
 896 end
 897
 898 minetest.register_entity(":signs:text", {
 899     collisionbox = { 0, 0, 0, 0, 0, 0 },
 900     visual = "upright_sprite",
 901     textures = {},
 902
 903         on_activate = signs_text_on_activate,
 904 })
 905
 906 -- And the good stuff here! :-)
 907
 908 function signs_lib.register_fence_with_sign(fencename, fencewithsignname)
 909     local def = minetest.registered_nodes[fencename]
 910     local def_sign = minetest.registered_nodes[fencewithsignname]
 911     if not (def and def_sign) then
 912         minetest.log("warning", "[signs_lib] Attempt to register unknown node as fence")
 913         return
 914     end
 915     def = signs_lib.table_copy(def)
 916     def_sign = signs_lib.table_copy(def_sign)
 917     fences_with_sign[fencename] = fencewithsignname
 918
 919     def_sign.on_place = function(itemstack, placer, pointed_thing, ...)
 920                 local node_above = minetest.get_node_or_nil(pointed_thing.above)
 921                 local node_under = minetest.get_node_or_nil(pointed_thing.under)
 922                 local def_above = node_above and minetest.registered_nodes[node_above.name]
 923                 local def_under = node_under and minetest.registered_nodes[node_under.name]
 924                 local fdir = minetest.dir_to_facedir(placer:get_look_dir())
 925                 local playername = placer:get_player_name()
 926
 927                 if minetest.is_protected(pointed_thing.under, playername) then
 928                         minetest.record_protection_violation(pointed_thing.under, playername)
 929                         return itemstack
 930                 end
 931
 932                 if minetest.is_protected(pointed_thing.above, playername) then
 933                         minetest.record_protection_violation(pointed_thing.above, playername)
 934                         return itemstack
 935                 end
 936
 937                 if def_under and def_under.on_rightclick then
 938                         return def_under.on_rightclick(pointed_thing.under, node_under, placer, itemstack) or itemstack
 939                 elseif def_under and def_under.buildable_to then
 940                         minetest.add_node(pointed_thing.under, {name = fencename, param2 = fdir})
 941                         if not signs_lib.expect_infinite_stacks then
 942                                 itemstack:take_item()
 943                         end
 944                         placer:set_wielded_item(itemstack)
 945                 elseif def_above and def_above.buildable_to then
 946                         minetest.add_node(pointed_thing.above, {name = fencename, param2 = fdir})
 947                         if not signs_lib.expect_infinite_stacks then
 948                                 itemstack:take_item()
 949                         end
 950                         placer:set_wielded_item(itemstack)
 951                 end
 952                 return itemstack
 953         end
 954         def_sign.on_construct = function(pos, ...)
 955                 signs_lib.construct_sign(pos)
 956         end
 957         def_sign.on_destruct = function(pos, ...)
 958                 signs_lib.destruct_sign(pos)
 959         end
 960         def_sign.on_receive_fields = function(pos, formname, fields, sender)
 961                 signs_lib.receive_fields(pos, formname, fields, sender)
 962         end
 963         def_sign.on_punch = function(pos, node, puncher, ...)
 964                 signs_lib.update_sign(pos)
 965         end
 966         local fencename = fencename
 967         def_sign.after_dig_node = function(pos, node, ...)
 968             node.name = fencename
 969             minetest.add_node(pos, node)
 970         end
 971     def_sign.drop = default_sign
 972         minetest.register_node(":"..fencename, def)
 973         minetest.register_node(":"..fencewithsignname, def_sign)
 974         table.insert(signs_lib.sign_node_list, fencewithsignname)
 975         minetest.log("verbose", S("Registered %s and %s"):format(fencename, fencewithsignname))
 976 end
 977
 978 build_char_db()
 979
 980 minetest.register_alias("homedecor:fence_wood_with_sign", "signs:sign_post")
 981 minetest.register_alias("sign_wall_locked", "locked_sign:sign_wall_locked")
 982
 983 signs_lib.register_fence_with_sign("default:fence_wood", "signs:sign_post")
 984
 985 -- restore signs' text after /clearobjects and the like, the next time
 986 -- a block is reloaded by the server.
 987
 988 minetest.register_lbm({
 989         nodenames = signs_lib.sign_node_list,
 990         name = "signs_lib:restore_sign_text",
 991         label = "Restore sign text",
 992         run_at_every_load = true,
 993         action = function(pos, node)
 994                 signs_lib.update_sign(pos)
 995         end
 996 })
 997
 998 -- locked sign
 999
1000 minetest.register_craft({
1001         output = "locked_sign:sign_wall_locked",
1002         recipe = {
1003                 {"group:wood", "group:wood", "group:wood"},
1004                 {"group:wood", "group:wood", "default:steel_ingot"},
1005                 {"", "group:stick", ""},
1006         }
1007 })
1008
1009 --Alternate recipes.
1010
1011 minetest.register_craft({
1012         output = "locked_sign:sign_wall_locked",
1013         recipe = {
1014                 {default_sign},
1015                 {"default:steel_ingot"},
1016     },
1017 })
1018
1019 minetest.register_craft({
1020         output = "locked_sign:sign_wall_locked",
1021         recipe = {
1022                 {default_sign_metal},
1023                 {"default:steel_ingot"},
1024     },
1025 })
1026
1027 -- craft recipes for the metal signs
1028
1029 minetest.register_craft( {
1030         output = "signs:sign_wall_green",
1031         recipe = {
1032                         { "dye:dark_green", "dye:white", "dye:dark_green" },
1033                         { "", default_sign_metal, "" }
1034         },
1035 })
1036
1037 minetest.register_craft( {
1038         output = "signs:sign_wall_green 2",
1039         recipe = {
1040                         { "dye:dark_green", "dye:white", "dye:dark_green" },
1041                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1042         },
1043 })
1044
1045 minetest.register_craft( {
1046         output = "signs:sign_wall_yellow",
1047         recipe = {
1048                         { "dye:yellow", "dye:black", "dye:yellow" },
1049                         { "", default_sign_metal, "" }
1050         },
1051 })
1052
1053 minetest.register_craft( {
1054         output = "signs:sign_wall_yellow 2",
1055         recipe = {
1056                         { "dye:yellow", "dye:black", "dye:yellow" },
1057                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1058         },
1059 })
1060
1061 minetest.register_craft( {
1062         output = "signs:sign_wall_red",
1063         recipe = {
1064                         { "dye:red", "dye:white", "dye:red" },
1065                         { "", default_sign_metal, "" }
1066         },
1067 })
1068
1069 minetest.register_craft( {
1070         output = "signs:sign_wall_red 2",
1071         recipe = {
1072                         { "dye:red", "dye:white", "dye:red" },
1073                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1074         },
1075 })
1076
1077 minetest.register_craft( {
1078         output = "signs:sign_wall_white_red",
1079         recipe = {
1080                         { "dye:white", "dye:red", "dye:white" },
1081                         { "", default_sign_metal, "" }
1082         },
1083 })
1084
1085 minetest.register_craft( {
1086         output = "signs:sign_wall_white_red 2",
1087         recipe = {
1088                         { "dye:white", "dye:red", "dye:white" },
1089                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1090         },
1091 })
1092
1093 minetest.register_craft( {
1094         output = "signs:sign_wall_white_black",
1095         recipe = {
1096                         { "dye:white", "dye:black", "dye:white" },
1097                         { "", default_sign_metal, "" }
1098         },
1099 })
1100
1101 minetest.register_craft( {
1102         output = "signs:sign_wall_white_black 2",
1103         recipe = {
1104                         { "dye:white", "dye:black", "dye:white" },
1105                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1106         },
1107 })
1108
1109 minetest.register_craft( {
1110         output = "signs:sign_wall_orange",
1111         recipe = {
1112                         { "dye:orange", "dye:black", "dye:orange" },
1113                         { "", default_sign_metal, "" }
1114         },
1115 })
1116
1117 minetest.register_craft( {
1118         output = "signs:sign_wall_orange 2",
1119         recipe = {
1120                         { "dye:orange", "dye:black", "dye:orange" },
1121                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1122         },
1123 })
1124
1125 minetest.register_craft( {
1126         output = "signs:sign_wall_blue",
1127         recipe = {
1128                         { "dye:blue", "dye:white", "dye:blue" },
1129                         { "", default_sign_metal, "" }
1130         },
1131 })
1132
1133 minetest.register_craft( {
1134         output = "signs:sign_wall_blue 2",
1135         recipe = {
1136                         { "dye:blue", "dye:white", "dye:blue" },
1137                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1138         },
1139 })
1140
1141 minetest.register_craft( {
1142         output = "signs:sign_wall_brown",
1143         recipe = {
1144                         { "dye:brown", "dye:white", "dye:brown" },
1145                         { "", default_sign_metal, "" }
1146         },
1147 })
1148
1149 minetest.register_craft( {
1150         output = "signs:sign_wall_brown 2",
1151         recipe = {
1152                         { "dye:brown", "dye:white", "dye:brown" },
1153                         { "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
1154         },
1155 })
1156
1157 if minetest.setting_get("log_mods") then
1158         minetest.log("action", S("signs loaded"))
1159 end