signs_lib/api.lua

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-- signs_lib api, backported from street_signs
local S = signs_lib.gettext
signs_lib.lbm_restore_nodes = {}
signs_lib.old_fenceposts = {}
signs_lib.old_fenceposts_replacement_signs = {}
signs_lib.old_fenceposts_with_signs = {}
signs_lib.allowed_poles = {}
-- Settings used for a standard wood or steel wall sign
signs_lib.standard_lines = 6
signs_lib.standard_hscale = 1
signs_lib.standard_vscale = 1
signs_lib.standard_lspace = 1
signs_lib.standard_fsize = 15
signs_lib.standard_xoffs = 4
signs_lib.standard_yoffs = 0
signs_lib.standard_cpl = 35
signs_lib.standard_wood_groups = table.copy(minetest.registered_items["default:sign_wall_wood"].groups)
signs_lib.standard_wood_groups.sign = 1
signs_lib.standard_wood_groups.attached_node = nil
signs_lib.standard_steel_groups = table.copy(minetest.registered_items["default:sign_wall_steel"].groups)
signs_lib.standard_steel_groups.sign = 1
signs_lib.standard_steel_groups.attached_node = nil
signs_lib.standard_wood_sign_sounds = table.copy(minetest.registered_items["default:sign_wall_wood"].sounds)
signs_lib.standard_steel_sign_sounds = table.copy(minetest.registered_items["default:sign_wall_steel"].sounds)
signs_lib.standard_yaw = {
0,
math.pi / -2,
math.pi,
math.pi / 2,
}
signs_lib.wallmounted_yaw = {
nil,
nil,
math.pi / -2,
math.pi / 2,
0,
math.pi,
}
signs_lib.fdir_to_back = {
{ 0, -1 },
{ -1, 0 },
{ 0, 1 },
{ 1, 0 },
}
signs_lib.wall_fdir_to_back = {
nil,
nil,
{ 0, 1 },
{ 0, -1 },
{ -1, 0 },
{ 1, 0 },
}
signs_lib.rotate_facedir = {
[0] = 1,
[1] = 6,
[2] = 3,
[3] = 0,
[4] = 2,
[5] = 6,
[6] = 4
}
signs_lib.rotate_walldir = {
[0] = 1,
[1] = 5,
[2] = 0,
[3] = 4,
[4] = 2,
[5] = 3
}
-- Initialize character texture cache
local ctexcache = {}
signs_lib.wallmounted_rotate = function(pos, node, user, mode)
if not signs_lib.can_modify(pos, user) then return false end
if mode ~= screwdriver.ROTATE_FACE or string.match(node.name, "_onpole") then
return false
end
local newparam2 = signs_lib.rotate_walldir[node.param2] or 0
minetest.swap_node(pos, { name = node.name, param2 = newparam2 })
for _, v in ipairs(minetest.get_objects_inside_radius(pos, 0.5)) do
local e = v:get_luaentity()
if e and e.name == "signs_lib:text" then
v:remove()
end
end
signs_lib.update_sign(pos)
return true
end
signs_lib.facedir_rotate = function(pos, node, user, mode)
if not signs_lib.can_modify(pos, user) then return false end
if mode ~= screwdriver.ROTATE_FACE or string.match(node.name, "_onpole") then
return false
end
local newparam2 = signs_lib.rotate_facedir[node.param2] or 0
minetest.swap_node(pos, { name = node.name, param2 = newparam2 })
for _, v in ipairs(minetest.get_objects_inside_radius(pos, 0.5)) do
local e = v:get_luaentity()
if e and e.name == "signs_lib:text" then
v:remove()
end
end
signs_lib.update_sign(pos)
return true
end
local DEFAULT_TEXT_SCALE = {x=10, y=10}
-- infinite stacks
if not minetest.settings:get_bool("creative_mode") then
signs_lib.expect_infinite_stacks = false
else
signs_lib.expect_infinite_stacks = true
end
-- CONSTANTS
-- Path to the textures.
local TP = signs_lib.path .. "/textures"
-- Font file formatter
local CHAR_FILE = "%s_%02x.png"
-- Fonts path
local CHAR_PATH = TP .. "/" .. CHAR_FILE
-- Lots of overkill here. KISS advocates, go away, shoo! ;) -- kaeza
local PNG_HDR = string.char(0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A)
-- check if a file does exist
-- to avoid reopening file after checking again
-- pass TRUE as second argument
local function file_exists(name, return_handle, mode)
mode = mode or "r";
local f = io.open(name, mode)
if f ~= nil then
if (return_handle) then
return f
end
io.close(f)
return true
else
return false
end
end
-- Read the image size from a PNG file.
-- Returns image_w, image_h.
-- Only the LSB is read from each field!
function signs_lib.read_image_size(filename)
local f = file_exists(filename, true, "rb")
-- file might not exist (don't crash the game)
if (not f) then
return 0, 0
end
f:seek("set", 0x0)
local hdr = f:read(string.len(PNG_HDR))
if hdr ~= PNG_HDR then
f:close()
return
end
f:seek("set", 0x13)
local ws = f:read(1)
f:seek("set", 0x17)
local hs = f:read(1)
f:close()
return ws:byte(), hs:byte()
end
-- 4 rows, max 80 chars per, plus a bit of fudge to
-- avoid excess trimming (e.g. due to color codes)
local MAX_INPUT_CHARS = 400
-- helper functions to trim sign text input/output
local function trim_input(text)
return text:sub(1, math.min(MAX_INPUT_CHARS, text:len()))
end
local function build_char_db(font_size)
local cw = {}
-- To calculate average char width.
local total_width = 0
local char_count = 0
for c = 32, 255 do
local w, h = signs_lib.read_image_size(CHAR_PATH:format("signs_lib_font_"..font_size.."px", c))
if w and h then
local ch = string.char(c)
cw[ch] = w
total_width = total_width + w
char_count = char_count + 1
end
end
local cbw, cbh = signs_lib.read_image_size(TP.."/signs_lib_color_"..font_size.."px_n.png")
assert(cbw and cbh, "error reading bg dimensions")
return cw, cbw, cbh, (total_width / char_count)
end
signs_lib.charwidth15,
signs_lib.colorbgw15,
signs_lib.lineheight15,
signs_lib.avgwidth15 = build_char_db(15)
signs_lib.charwidth31,
signs_lib.colorbgw31,
signs_lib.lineheight31,
signs_lib.avgwidth31 = build_char_db(31)
local sign_groups = {choppy=2, dig_immediate=2}
local fences_with_sign = { }
-- some local helper functions
local function split_lines_and_words(text)
if not text then return end
local lines = { }
for _, line in ipairs(text:split("\n")) do
table.insert(lines, line:split(" "))
end
return lines
end
local math_max = math.max
local function fill_line(x, y, w, c, font_size, colorbgw)
c = c or "0"
local tex = { }
for xx = 0, math.max(0, w), colorbgw do
table.insert(tex, (":%d,%d=signs_lib_color_"..font_size.."px_%s.png"):format(x + xx, y, c))
end
return table.concat(tex)
end
-- make char texture file name
-- if texture file does not exist use fallback texture instead
local function char_tex(font_name, ch)
if ctexcache[font_name..ch] then
return ctexcache[font_name..ch], true
else
local c = ch:byte()
local exists, tex = file_exists(CHAR_PATH:format(font_name, c))
if exists and c ~= 14 then
tex = CHAR_FILE:format(font_name, c)
else
tex = CHAR_FILE:format(font_name, 0x0)
end
ctexcache[font_name..ch] = tex
return tex, exists
end
end
local function make_line_texture(line, lineno, pos, line_width, line_height, cwidth_tab, font_size, colorbgw)
local width = 0
local maxw = 0
local font_name = "signs_lib_font_"..font_size.."px"
local words = { }
local node = minetest.get_node(pos)
local def = minetest.registered_items[node.name]
local default_color = def.default_color or 0
local cur_color = tonumber(default_color, 16)
-- We check which chars are available here.
for word_i, word in ipairs(line) do
local chars = { }
local ch_offs = 0
word = string.gsub(word, "%^[12345678abcdefgh]", {
["^1"] = string.char(0x81),
["^2"] = string.char(0x82),
["^3"] = string.char(0x83),
["^4"] = string.char(0x84),
["^5"] = string.char(0x85),
["^6"] = string.char(0x86),
["^7"] = string.char(0x87),
["^8"] = string.char(0x88),
["^a"] = string.char(0x8a),
["^b"] = string.char(0x8b),
["^c"] = string.char(0x8c),
["^d"] = string.char(0x8d),
["^e"] = string.char(0x8e),
["^f"] = string.char(0x8f),
["^g"] = string.char(0x90),
["^h"] = string.char(0x91)
})
local word_l = #word
local i = 1
while i <= word_l do
local c = word:sub(i, i)
if c == "#" then
local cc = tonumber(word:sub(i+1, i+1), 16)
if cc then
i = i + 1
cur_color = cc
end
else
local w = cwidth_tab[c]
if w then
width = width + w + 1
if width >= (line_width - cwidth_tab[" "]) then
width = 0
else
maxw = math_max(width, maxw)
end
if #chars < MAX_INPUT_CHARS then
table.insert(chars, {
off = ch_offs,
tex = char_tex(font_name, c),
col = ("%X"):format(cur_color),
})
end
ch_offs = ch_offs + w
end
end
i = i + 1
end
width = width + cwidth_tab[" "] + 1
maxw = math_max(width, maxw)
table.insert(words, { chars=chars, w=ch_offs })
end
-- Okay, we actually build the "line texture" here.
local texture = { }
local start_xpos = math.floor((line_width - maxw) / 2) + def.x_offset
local xpos = start_xpos
local ypos = (line_height + def.line_spacing)* lineno + def.y_offset
cur_color = nil
for word_i, word in ipairs(words) do
local xoffs = (xpos - start_xpos)
if (xoffs > 0) and ((xoffs + word.w) > maxw) then
table.insert(texture, fill_line(xpos, ypos, maxw, "n", font_size, colorbgw))
xpos = start_xpos
ypos = ypos + line_height + def.line_spacing
lineno = lineno + 1
if lineno >= def.number_of_lines then break end
table.insert(texture, fill_line(xpos, ypos, maxw, cur_color, font_size, colorbgw))
end
for ch_i, ch in ipairs(word.chars) do
if ch.col ~= cur_color then
cur_color = ch.col
table.insert(texture, fill_line(xpos + ch.off, ypos, maxw, cur_color, font_size, colorbgw))
end
table.insert(texture, (":%d,%d=%s"):format(xpos + ch.off, ypos, ch.tex))
end
table.insert(
texture,
(":%d,%d="):format(xpos + word.w, ypos) .. char_tex(font_name, " ")
)
xpos = xpos + word.w + cwidth_tab[" "]
if xpos >= (line_width + cwidth_tab[" "]) then break end
end
table.insert(texture, fill_line(xpos, ypos, maxw, "n", font_size, colorbgw))
table.insert(texture, fill_line(start_xpos, ypos + line_height, maxw, "n", font_size, colorbgw))
return table.concat(texture), lineno
end
local function make_sign_texture(lines, pos)
local node = minetest.get_node(pos)
local def = minetest.registered_items[node.name]
local font_size
local line_width
local line_height
local char_width
local colorbgw
if def.font_size and def.font_size == 31 then
font_size = 31
line_width = math.floor(signs_lib.avgwidth31 * def.chars_per_line) * def.horiz_scaling
line_height = signs_lib.lineheight31
char_width = signs_lib.charwidth31
colorbgw = signs_lib.colorbgw31
else
font_size = 15
line_width = math.floor(signs_lib.avgwidth15 * def.chars_per_line) * def.horiz_scaling
line_height = signs_lib.lineheight15
char_width = signs_lib.charwidth15
colorbgw = signs_lib.colorbgw15
end
local texture = { ("[combine:%dx%d"):format(line_width, (line_height + def.line_spacing) * def.number_of_lines * def.vert_scaling) }
local lineno = 0
for i = 1, #lines do
if lineno >= def.number_of_lines then break end
local linetex, ln = make_line_texture(lines[i], lineno, pos, line_width, line_height, char_width, font_size, colorbgw)
table.insert(texture, linetex)
lineno = ln + 1
end
table.insert(texture, "^[makealpha:0,0,0")
return table.concat(texture, "")
end
local function set_obj_text(obj, text, x, pos)
local split = split_lines_and_words
local text_ansi = Utf8ToAnsi(text)
local n = minetest.registered_nodes[minetest.get_node(pos).name]
local text_scale = (n and n.text_scale) or DEFAULT_TEXT_SCALE
local texture = make_sign_texture(split(text_ansi), pos)
obj:set_properties({
textures={texture},
visual_size = text_scale,
})
end
local function make_widefont_nodename(name)
if string.find(name, "_widefont") then return name end
if string.find(name, "_onpole") then
return string.gsub(name, "_onpole", "_widefont_onpole")
elseif string.find(name, "_hanging") then
return string.gsub(name, "_hanging", "_widefont_hanging")
else
return name.."_widefont"
end
end
function signs_lib.construct_sign(pos)
local form = "size[6,4]"..
"textarea[0,-0.3;6.5,3;text;;${text}]"..
"background[-0.5,-0.5;7,5;signs_lib_sign_bg.jpg]"
local node = minetest.get_node(pos)
local wname = make_widefont_nodename(node.name)
if minetest.registered_items[wname] then
local state = "off"
if string.find(node.name, "widefont") then state = "on" end
form = form.."label[1,3.4;Use wide font]"..
"image_button[1.1,3.7;1,0.6;signs_lib_switch_"..
state..".png;"..
state..";;;false;signs_lib_switch_interm.png]"..
"button_exit[3,3.4;2,1;ok;"..S("Write").."]"
else
form = form.."button_exit[2,3.4;2,1;ok;"..S("Write").."]"
end
local meta = minetest.get_meta(pos)
meta:set_string("formspec", form)
local i = meta:get_string("infotext")
if i == "" then -- it wasn't even set, so set it.
meta:set_string("infotext", "")
end
end
function signs_lib.destruct_sign(pos)
local objects = minetest.get_objects_inside_radius(pos, 0.5)
for _, v in ipairs(objects) do
local e = v:get_luaentity()
if e and e.name == "signs_lib:text" then
v:remove()
end
end
end
local function make_infotext(text)
text = trim_input(text)
local lines = split_lines_and_words(text) or {}
local lines2 = { }
for _, line in ipairs(lines) do
table.insert(lines2, (table.concat(line, " "):gsub("#[0-9a-fA-F]", ""):gsub("##", "#")))
end
return table.concat(lines2, "\n")
end
function signs_lib.update_sign(pos, fields)
local meta = minetest.get_meta(pos)
local text = fields and fields.text or meta:get_string("text")
text = trim_input(text)
local owner = meta:get_string("owner")
ownstr = ""
if owner ~= "" then ownstr = S("Locked sign, owned by @1\n", owner) end
meta:set_string("text", text)
meta:set_string("infotext", ownstr..make_infotext(text).." ")
local objects = minetest.get_objects_inside_radius(pos, 0.5)
local found
for _, v in ipairs(objects) do
local e = v:get_luaentity()
if e and e.name == "signs_lib:text" then
if found then
v:remove()
else
set_obj_text(v, text, nil, pos)
found = true
end
end
end
if found then
return
end
-- if there is no entity
local signnode = minetest.get_node(pos)
local signname = signnode.name
local def = minetest.registered_items[signname]
if not def.entity_info or not def.entity_info.yaw[signnode.param2 + 1] then return end
local obj = minetest.add_entity(pos, "signs_lib:text")
obj:setyaw(def.entity_info.yaw[signnode.param2 + 1])
obj:set_properties({
mesh = def.entity_info.mesh,
})
end
function signs_lib.receive_fields(pos, formname, fields, sender)
if not fields or not signs_lib.can_modify(pos, sender) then return end
if fields.text and fields.ok then
minetest.log("action", S("@1 wrote \"@2\" to sign at @3",
(sender:get_player_name() or ""),
fields.text:gsub('\\', '\\\\'):gsub("\n", "\\n"),
minetest.pos_to_string(pos)
))
signs_lib.update_sign(pos, fields)
elseif fields.on or fields.off then
local node = minetest.get_node(pos)
local newname
if fields.on and string.find(node.name, "widefont") then
newname = string.gsub(node.name, "_widefont", "")
elseif fields.off and not string.find(node.name, "widefont") then
newname = make_widefont_nodename(node.name)
end
if newname then
minetest.log("action", S("@1 flipped the wide-font switch to \"@2\" at @3",
(sender:get_player_name() or ""),
(fields.on and "off" or "on"),
minetest.pos_to_string(pos)
))
minetest.swap_node(pos, {name = newname, param2 = node.param2})
signs_lib.construct_sign(pos)
signs_lib.update_sign(pos, fields)
end
end
end
function signs_lib.can_modify(pos, player)
local meta = minetest.get_meta(pos)
local owner = meta:get_string("owner")
local playername = player:get_player_name()
if minetest.is_protected(pos, playername) then
minetest.record_protection_violation(pos, playername)
return false
end
if owner == ""
or playername == owner
or (minetest.check_player_privs(playername, {sign_editor=true}))
or (playername == minetest.settings:get("name")) then
return true
end
minetest.record_protection_violation(pos, playername)
return false
end
local signs_text_on_activate = function(self)
local pos = self.object:getpos()
local meta = minetest.get_meta(pos)
local signnode = minetest.get_node(pos)
local signname = signnode.name
local def = minetest.registered_items[signname]
local text = meta:get_string("text")
if text and def and def.entity_info then
text = trim_input(text)
set_obj_text(self.object, text, nil, pos)
self.object:set_properties({
mesh = def.entity_info.mesh,
})
end
end
minetest.register_entity("signs_lib:text", {
collisionbox = { 0, 0, 0, 0, 0, 0 },
visual = "mesh",
mesh = "signs_lib_standard_wall_sign_entity.obj",
textures = {},
on_activate = signs_text_on_activate,
})
-- make selection boxes
-- sizex/sizey specified in inches because that's what MUTCD uses.
function signs_lib.make_selection_boxes(sizex, sizey, foo, xoffs, yoffs, zoffs, is_facedir)
local tx = (sizex * 0.0254 ) / 2
local ty = (sizey * 0.0254 ) / 2
local xo = xoffs and xoffs * 0.0254 or 0
local yo = yoffs and yoffs * 0.0254 or 0
local zo = zoffs and zoffs * 0.0254 or 0
if not is_facedir then
return {
type = "wallmounted",
wall_side = { -0.5 + zo, -ty + yo, -tx + xo, -0.4375 + zo, ty + yo, tx + xo },
wall_top = { -tx - xo, 0.5 + zo, -ty + yo, tx - xo, 0.4375 + zo, ty + yo},
wall_bottom = { -tx - xo, -0.5 + zo, -ty + yo, tx - xo, -0.4375 + zo, ty + yo }
}
else
return {
type = "fixed",
fixed = { -tx + xo, -ty + yo, 0.5 + zo, tx + xo, ty + yo, 0.4375 + zo}
}
end
end
function signs_lib.check_for_pole(pos, pointed_thing)
local ppos = minetest.get_pointed_thing_position(pointed_thing)
local pnode = minetest.get_node(ppos)
local pdef = minetest.registered_items[pnode.name]
if (signs_lib.allowed_poles[pnode.name]
or (pdef and pdef.drawtype == "fencelike")
or string.find(pnode.name, "default:fence_")
or string.find(pnode.name, "_post")
or string.find(pnode.name, "fencepost")
or (pnode.name == "streets:bigpole" and pnode.param2 < 4)
or (pnode.name == "streets:bigpole" and pnode.param2 > 19 and pnode.param2 < 24)
)
and
(pos.x ~= ppos.x or pos.z ~= ppos.z) then
return true
end
end
function signs_lib.check_for_ceiling(pointed_thing)
if pointed_thing.above.x == pointed_thing.under.x
and pointed_thing.above.z == pointed_thing.under.z
and pointed_thing.above.y < pointed_thing.under.y then
return true
end
end
function signs_lib.after_place_node(pos, placer, itemstack, pointed_thing, locked)
local playername = placer:get_player_name()
local def = minetest.registered_items[itemstack:get_name()]
local ppos = minetest.get_pointed_thing_position(pointed_thing)
local pnode = minetest.get_node(ppos)
local pdef = minetest.registered_items[pnode.name]
if (def.allow_onpole ~= false) and signs_lib.check_for_pole(pos, pointed_thing) then
local node = minetest.get_node(pos)
minetest.swap_node(pos, {name = itemstack:get_name().."_onpole", param2 = node.param2})
elseif def.allow_hanging and signs_lib.check_for_ceiling(pointed_thing) then
local newparam2 = minetest.dir_to_facedir(placer:get_look_dir())
local node = minetest.get_node(pos)
minetest.swap_node(pos, {name = itemstack:get_name().."_hanging", param2 = newparam2})
end
if locked then
local meta = minetest.get_meta(pos)
meta:set_string("owner", playername)
meta:set_string("infotext", S("Locked sign, owned by @1\n", playername))
end
end
function signs_lib.register_fence_with_sign()
minetest.log("warning", "[signs_lib] ".."Attempt to call no longer used function signs_lib.register_fence_with_sign()")
end
local function register_sign(name, rdef)
local def = table.copy(rdef)
if rdef.entity_info == "standard" then
def.entity_info = {
mesh = "signs_lib_standard_wall_sign_entity.obj",
yaw = signs_lib.wallmounted_yaw
}
elseif rdef.entity_info then
def.entity_info = rdef.entity_info
end
if rdef.entity_info then
def.on_rightclick = rdef.on_rightclick or signs_lib.construct_sign
def.on_construct = rdef.on_construct or signs_lib.construct_sign
def.on_destruct = rdef.on_destruct or signs_lib.destruct_sign
def.on_receive_fields = rdef.on_receive_fields or signs_lib.receive_fields
def.on_punch = rdef.on_punch or signs_lib.update_sign
def.number_of_lines = rdef.number_of_lines or signs_lib.standard_lines
def.horiz_scaling = rdef.horiz_scaling or signs_lib.standard_hscale
def.vert_scaling = rdef.vert_scaling or signs_lib.standard_vscale
def.line_spacing = rdef.line_spacing or signs_lib.standard_lspace
def.font_size = rdef.font_size or signs_lib.standard_fsize
def.x_offset = rdef.x_offset or signs_lib.standard_xoffs
def.y_offset = rdef.y_offset or signs_lib.standard_yoffs
def.chars_per_line = rdef.chars_per_line or signs_lib.standard_cpl
def.default_color = rdef.default_color or "0"
if rdef.locked and not rdef.after_place_node then
def.after_place_node = function(pos, placer, itemstack, pointed_thing)
signs_lib.after_place_node(pos, placer, itemstack, pointed_thing, true)
end
else
def.after_place_node = rdef.after_place_node or signs_lib.after_place_node
end
end
def.paramtype = rdef.paramtype or "light"
def.drawtype = rdef.drawtype or "mesh"
def.mesh = rdef.mesh or "signs_lib_standard_wall_sign.obj"
def.wield_image = rdef.wield_image or def.inventory_image
def.drop = rdef.drop or name
def.sounds = rdef.sounds or signs_lib.standard_wood_sign_sounds
def.on_rotate = rdef.on_rotate or signs_lib.wallmounted_rotate
def.paramtype2 = rdef.paramtype2 or "wallmounted"
if rdef.on_rotate then
def.on_rotate = rdef.on_rotate
elseif rdef.drawtype == "wallmounted" then
def.on_rotate = signs_lib.wallmounted_rotate
else
def.on_rotate = signs_lib.facedir_rotate
end
if rdef.groups then
def.groups = rdef.groups
else
def.groups = signs_lib.standard_wood_groups
end
local cbox = signs_lib.make_selection_boxes(35, 25, allow_onpole)
def.selection_box = rdef.selection_box or cbox
def.node_box = table.copy(rdef.node_box or rdef.selection_box or cbox)
if def.sunlight_propagates ~= false then
def.sunlight_propagates = true
end
minetest.register_node(":"..name, def)
table.insert(signs_lib.lbm_restore_nodes, name)
if rdef.allow_onpole ~= false then
local opdef = table.copy(def)
local offset = 0.3125
if opdef.uses_slim_pole_mount then
offset = 0.35
end
opdef.selection_box = rdef.onpole_selection_box or opdef.selection_box
opdef.node_box = rdef.onpole_node_box or opdef.selection_box
if opdef.paramtype2 == "wallmounted" then
opdef.node_box.wall_side[1] = def.node_box.wall_side[1] - offset
opdef.node_box.wall_side[4] = def.node_box.wall_side[4] - offset
opdef.selection_box.wall_side[1] = def.selection_box.wall_side[1] - offset
opdef.selection_box.wall_side[4] = def.selection_box.wall_side[4] - offset
else
opdef.node_box.fixed[3] = def.node_box.fixed[3] + offset
opdef.node_box.fixed[6] = def.node_box.fixed[6] + offset
opdef.selection_box.fixed[3] = def.selection_box.fixed[3] + offset
opdef.selection_box.fixed[6] = def.selection_box.fixed[6] + offset
end
opdef.groups.not_in_creative_inventory = 1
opdef.tiles[3] = "signs_lib_pole_mount.png"
opdef.mesh = string.gsub(opdef.mesh, ".obj$", "_onpole.obj")
opdef.on_rotate = nil
if opdef.entity_info then
opdef.entity_info.mesh = string.gsub(opdef.entity_info.mesh, ".obj$", "_onpole.obj")
end
minetest.register_node(":"..name.."_onpole", opdef)
table.insert(signs_lib.lbm_restore_nodes, name.."_onpole")
end
if rdef.allow_hanging then
local hdef = table.copy(def)
hdef.paramtype2 = "facedir"
local hcbox = signs_lib.make_selection_boxes(35, 32, false, 0, 3, -18.5, true)
hdef.selection_box = rdef.hanging_selection_box or hcbox
hdef.node_box = rdef.hanging_node_box or rdef.hanging_selection_box or hcbox
hdef.groups.not_in_creative_inventory = 1
hdef.tiles[3] = "signs_lib_hangers.png"
hdef.mesh = string.gsub(string.gsub(hdef.mesh, "_facedir.obj", ".obj"), ".obj$", "_hanging.obj")
hdef.on_rotate = nil
if hdef.entity_info then
hdef.entity_info.mesh = string.gsub(string.gsub(hdef.entity_info.mesh, "_facedir.obj", ".obj"), ".obj$", "_hanging.obj")
hdef.entity_info.yaw = signs_lib.standard_yaw
end
minetest.register_node(":"..name.."_hanging", hdef)
table.insert(signs_lib.lbm_restore_nodes, name.."_hanging")
end
end
--[[
The main sign registration function
===================================
Example minimal recommended def for writable signs:
signs_lib.register_sign("foo:my_cool_sign", {
description = "Wooden cool sign",
inventory_image = "signs_lib_sign_cool_inv.png",
tiles = {
"signs_lib_sign_cool.png",
"signs_lib_sign_cool_edges.png"
},
number_of_lines = 2,
horiz_scaling = 0.8,
vert_scaling = 1,
line_spacing = 9,
font_size = 31,
x_offset = 7,
y_offset = 4,
chars_per_line = 40,
entity_info = "standard"
})
* default def assumes a wallmounted sign with on-pole being allowed.
*For signs that can't support onpole, include in the def:
allow_onpole = false,
* "standard" entity info implies the standard wood/steel sign model, in
wallmounted mode. For facedir signs using the standard model, use:
entity_info = {
mesh = "signs_lib_standard_wall_sign_entity.obj",
yaw = signs_lib.standard_yaw
},
]]--
function signs_lib.register_sign(name, rdef)
register_sign(name, rdef)
if rdef.allow_widefont then
wdef = table.copy(minetest.registered_items[name])
wdef.groups.not_in_creative_inventory = 1
wdef.horiz_scaling = wdef.horiz_scaling / 2
register_sign(name.."_widefont", wdef)
end
end
-- restore signs' text after /clearobjects and the like, the next time
-- a block is reloaded by the server.
minetest.register_lbm({
nodenames = signs_lib.lbm_restore_nodes,
name = "signs_lib:restore_sign_text",
label = "Restore sign text",
run_at_every_load = true,
action = function(pos, node)
signs_lib.update_sign(pos,nil,nil,node)
end
})
-- Convert old signs on fenceposts into signs on.. um.. fence posts :P
minetest.register_lbm({
nodenames = signs_lib.old_fenceposts_with_signs,
name = "signs_lib:fix_fencepost_signs",
label = "Change single-node signs on fences into normal",
run_at_every_load = true,
action = function(pos, node)
local fdir = node.param2 % 8
local signpos = {
x = pos.x + signs_lib.fdir_to_back[fdir+1][1],
y = pos.y,
z = pos.z + signs_lib.fdir_to_back[fdir+1][2]
}
if minetest.get_node(signpos).name == "air" then
local new_wmdir = minetest.dir_to_wallmounted(minetest.facedir_to_dir(fdir))
local oldfence = signs_lib.old_fenceposts[node.name]
local newsign = signs_lib.old_fenceposts_replacement_signs[node.name]
for _, v in ipairs(minetest.get_objects_inside_radius(pos, 0.5)) do
local e = v:get_luaentity()
if e and e.name == "signs_lib:text" then
v:remove()
end
end
local oldmeta = minetest.get_meta(pos):to_table()
minetest.set_node(pos, {name = oldfence})
minetest.set_node(signpos, { name = newsign, param2 = new_wmdir })
local newmeta = minetest.get_meta(signpos)
newmeta:from_table(oldmeta)
signs_lib.update_sign(signpos)
end
end
})
signs_lib.block_list = {}
signs_lib.totalblocks = 0
-- Maintain a list of currently-loaded blocks
minetest.register_lbm({
nodenames = {"group:sign"},
name = "signs_lib:update_block_list",
label = "Update list of loaded blocks, log only those with signs",
run_at_every_load = true,
action = function(pos, node)
-- yeah, yeah... I know I'm hashing a block pos, but it's still just a set of coords
local hash = minetest.hash_node_position(vector.floor(vector.divide(pos, core.MAP_BLOCKSIZE)))
if not signs_lib.block_list[hash] then
signs_lib.block_list[hash] = true
signs_lib.totalblocks = signs_lib.totalblocks + 1
end
end
})
minetest.register_chatcommand("regen_signs", {
params = "",
2019-09-13 23:12:40 +02:00
privs = {server = true},
description = "Skims through all currently-loaded sign-bearing mapblocks, clears away any entities within each sign's node space, and regenerates their text entities, if any.",
func = function(player_name, params)
local allsigns = {}
local totalsigns = 0
for b in pairs(signs_lib.block_list) do
local blockpos = minetest.get_position_from_hash(b)
local pos1 = vector.multiply(blockpos, core.MAP_BLOCKSIZE)
local pos2 = vector.add(pos1, core.MAP_BLOCKSIZE - 1)
if minetest.get_node_or_nil(vector.add(pos1, core.MAP_BLOCKSIZE/2)) then
local signs_in_block = minetest.find_nodes_in_area(pos1, pos2, {"group:sign"})
allsigns[#allsigns + 1] = signs_in_block
totalsigns = totalsigns + #signs_in_block
else
signs_lib.block_list[b] = nil -- if the block is no longer loaded, remove it from the table
signs_lib.totalblocks = signs_lib.totalblocks - 1
end
end
if signs_lib.totalblocks < 0 then signs_lib.totalblocks = 0 end
if totalsigns == 0 then
minetest.chat_send_player(player_name, "There are no signs in the currently-loaded terrain.")
signs_lib.block_list = {}
return
end
minetest.chat_send_player(player_name, "Found a total of "..totalsigns.." sign nodes across "..signs_lib.totalblocks.." blocks.")
minetest.chat_send_player(player_name, "Regenerating sign entities...")
for _, b in pairs(allsigns) do
for _, pos in ipairs(b) do
local objects = minetest.get_objects_inside_radius(pos, 0.5)
if #objects > 0 then
for _, v in ipairs(objects) do
v:remove()
end
end
local node = minetest.get_node(pos)
local def = minetest.registered_items[node.name]
if def and def.entity_info then
signs_lib.update_sign(pos)
end
end
end
minetest.chat_send_player(player_name, "Finished.")
end
})