minetest-mm/mods/signs_lib/api.lua

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-- signs_lib api, backported from street_signs
local S = signs_lib.gettext
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local function get_sign_formspec() end
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signs_lib.glow_item = "basic_materials:energy_crystal_simple"
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signs_lib.lbm_restore_nodes = {}
signs_lib.old_fenceposts = {}
signs_lib.old_fenceposts_replacement_signs = {}
signs_lib.old_fenceposts_with_signs = {}
-- 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.default_text_scale = {x=10, y=10}
signs_lib.old_widefont_signs = {}
signs_lib.block_list = {}
signs_lib.totalblocks = 0
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.fdir_flip_to_back = {
[0] = { 0, 2 },
[1] = { 2, 0 },
[2] = { 0, -2 },
[3] = { -2, 0 }
}
signs_lib.wall_fdir_flip_to_back = {
[2] = { 2, 0 },
[3] = { -2, 0 },
[4] = { 0, 2 },
[5] = { 0, -2 },
}
signs_lib.fdir_to_back_left = {
[0] = { -1, 1 },
[1] = { 1, 1 },
[2] = { 1, -1 },
[3] = { -1, -1 }
}
signs_lib.wall_fdir_to_back_left = {
[2] = { 1, 1 },
[3] = { -1, -1 },
[4] = { -1, 1 },
[5] = { 1, -1 }
}
signs_lib.rotate_walldir = {
[0] = 4,
[1] = 0,
[2] = 5,
[3] = 1,
[4] = 2,
[5] = 3
}
signs_lib.rotate_walldir_simple = {
[0] = 4,
[1] = 4,
[2] = 5,
[3] = 4,
[4] = 2,
[5] = 3
}
signs_lib.rotate_facedir = {
[0] = 1,
[1] = 2,
[2] = 3,
[3] = 4,
[4] = 6,
[5] = 6,
[6] = 0
}
signs_lib.rotate_facedir_simple = {
[0] = 1,
[1] = 2,
[2] = 3,
[3] = 0,
[4] = 0,
[5] = 0
}
signs_lib.flip_facedir = {
[0] = 2,
[1] = 3,
[2] = 0,
[3] = 1,
[4] = 6,
[5] = 4,
[6] = 4
}
signs_lib.flip_walldir = {
[0] = 1,
[1] = 0,
[2] = 3,
[3] = 2,
[4] = 5,
[5] = 4
}
-- Initialize character texture cache
local ctexcache = {}
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local ctexcache_wide = {}
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-- entity handling
minetest.register_entity("signs_lib:text", {
collisionbox = { 0, 0, 0, 0, 0, 0 },
visual = "mesh",
mesh = "signs_lib_standard_sign_entity_wall.obj",
textures = {},
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static_save = true,
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backface_culling = false
})
function signs_lib.delete_objects(pos)
local objects = minetest.get_objects_inside_radius(pos, 0.5)
for _, v in ipairs(objects) do
if v then
local e = v:get_luaentity()
if e and string.match(e.name, "sign.*text") then
v:remove()
end
end
end
end
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function signs_lib.spawn_entity(pos, texture, glow)
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local node = minetest.get_node(pos)
local def = minetest.registered_items[node.name]
if not def or not def.entity_info then return end
local text_scale = (node and node.text_scale) or signs_lib.default_text_scale
local objects = minetest.get_objects_inside_radius(pos, 0.5)
local obj
if #objects > 0 then
for _, v in ipairs(objects) do
if v then
local e = v:get_luaentity()
if e and e.name == "signs_lib:text" then
obj = v
end
end
end
end
if not obj then
obj = minetest.add_entity(pos, "signs_lib:text")
end
local yaw = def.entity_info.yaw[node.param2 + 1]
local pitch = 0
if not string.find(node.name, "onpole") and not string.find(node.name, "hanging") then
local rot90 = math.pi/2
if def.paramtype2 == "wallmounted" then
if node.param2 == 1 then -- on floor
pitch = -rot90
yaw = 0
elseif node.param2 == 0 then -- on ceiling
pitch = rot90
yaw = math.pi
end
elseif def.paramtype2 == "facedir" then
if node.param2 == 4 then
pitch = -rot90
yaw = 0
elseif node.param2 == 6 then
pitch = rot90
yaw = math.pi
end
end
end
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if glow ~= "" then
obj:set_properties( {glow = tonumber(glow * 5)} )
end
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if yaw then
obj:set_rotation({x = pitch, y = yaw, z=0})
if not texture then
obj:set_properties({
mesh = def.entity_info.mesh,
visual_size = text_scale,
})
else
obj:set_properties({
mesh = def.entity_info.mesh,
visual_size = text_scale,
textures={texture},
})
end
end
end
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function signs_lib.set_obj_text(pos, text, glow)
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local split = signs_lib.split_lines_and_words
local text_ansi = Utf8ToAnsi(text)
local n = minetest.registered_nodes[minetest.get_node(pos).name]
signs_lib.delete_objects(pos)
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-- only create sign entity for actual text
if text_ansi and text_ansi ~= "" then
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signs_lib.spawn_entity(pos,
signs_lib.make_sign_texture(split(text_ansi), pos), glow)
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end
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end
-- rotation
function signs_lib.handle_rotation(pos, node, user, mode)
if not signs_lib.can_modify(pos, user)
or mode ~= screwdriver.ROTATE_FACE then
return false
end
local newparam2
local tpos = pos
local def = minetest.registered_items[node.name]
if string.match(node.name, "_onpole") then
if not string.match(node.name, "_horiz") then
newparam2 = signs_lib.rotate_walldir_simple[node.param2] or 4
local t = signs_lib.wall_fdir_to_back_left
if def.paramtype2 ~= "wallmounted" then
newparam2 = signs_lib.rotate_facedir_simple[node.param2] or 0
t = signs_lib.fdir_to_back_left
end
tpos = {
x = pos.x + t[node.param2][1],
y = pos.y,
z = pos.z + t[node.param2][2]
}
else
-- flip the sign to the other side of the horizontal pole
newparam2 = signs_lib.flip_walldir[node.param2] or 4
local t = signs_lib.wall_fdir_flip_to_back
if def.paramtype2 ~= "wallmounted" then
newparam2 = signs_lib.flip_facedir[node.param2] or 0
t = signs_lib.fdir_flip_to_back
end
tpos = {
x = pos.x + t[node.param2][1],
y = pos.y,
z = pos.z + t[node.param2][2]
}
end
local node2 = minetest.get_node(tpos)
local def2 = minetest.registered_items[node2.name]
if not def2 or not def2.buildable_to then return true end -- undefined, or not buildable_to.
minetest.set_node(tpos, {name = node.name, param2 = newparam2})
minetest.get_meta(tpos):from_table(minetest.get_meta(pos):to_table())
minetest.remove_node(pos)
signs_lib.delete_objects(pos)
elseif string.match(node.name, "_hanging") or string.match(node.name, "yard") then
minetest.swap_node(tpos, { name = node.name, param2 = signs_lib.rotate_facedir_simple[node.param2] or 0 })
elseif minetest.registered_items[node.name].paramtype2 == "wallmounted" then
minetest.swap_node(tpos, { name = node.name, param2 = signs_lib.rotate_walldir[node.param2] or 0 })
else
minetest.swap_node(tpos, { name = node.name, param2 = signs_lib.rotate_facedir[node.param2] or 0 })
end
signs_lib.update_sign(tpos)
return true
end
-- 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"
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local CHAR_FILE_WIDE = "%s_%s.png"
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-- Fonts path
local CHAR_PATH = TP .. "/" .. CHAR_FILE
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local CHAR_PATH_WIDE = TP .. "/" .. CHAR_FILE_WIDE
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-- 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
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io.close(f)
return true
else
return false
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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 = {}
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local cw_wide = {}
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-- 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
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for i = 1, #signs_lib.wide_character_codes do
local ch = signs_lib.wide_character_codes[i]
local w, h = signs_lib.read_image_size(CHAR_PATH_WIDE:format("signs_lib_font_"..font_size.."px", ch))
if w and h then
cw_wide[ch] = w
total_width = total_width + w
char_count = char_count + 1
end
end
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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")
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return cw, cbw, cbh, (total_width / char_count), cw_wide
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end
signs_lib.charwidth15,
signs_lib.colorbgw15,
signs_lib.lineheight15,
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signs_lib.avgwidth15,
signs_lib.charwidth_wide15 = build_char_db(15)
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signs_lib.charwidth31,
signs_lib.colorbgw31,
signs_lib.lineheight31,
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signs_lib.avgwidth31,
signs_lib.charwidth_wide31 = build_char_db(31)
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local sign_groups = {choppy=2, dig_immediate=2}
local fences_with_sign = { }
-- some local helper functions
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
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local function char_tex_wide(font_name, ch)
if ctexcache_wide[font_name..ch] then
return ctexcache_wide[font_name..ch], true
else
local exists, tex = file_exists(CHAR_PATH_WIDE:format(font_name, ch))
if exists then
tex = CHAR_FILE_WIDE:format(font_name, ch)
else
tex = CHAR_FILE:format(font_name, 0x5f)
end
ctexcache_wide[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, cwidth_tab_wide)
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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
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local wide_c
if "&#x" == word:sub(i, i + 2) then
local j = i + 3
local collected = ""
while j <= word_l do
local c = word:sub(j, j)
if c == ";" then
wide_c = collected
break
elseif c < "0" then
break
elseif "f" < c then
break
elseif ("9" < c) and (c < "a") then
break
else
collected = collected .. c
j = j + 1
end
end
end
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local c = word:sub(i, i)
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local c2 = word:sub(i+1, i+1)
if c == "#" and c2 ~= "#" then
local cc = tonumber(c2, 16)
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if cc then
i = i + 1
cur_color = cc
end
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elseif wide_c then
local w = cwidth_tab_wide[wide_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_wide(font_name, wide_c),
col = ("%X"):format(cur_color),
})
end
ch_offs = ch_offs + w
end
i = i + #wide_c + 3
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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(
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texture,
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(":%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
function signs_lib.make_sign_texture(lines, pos)
local node = minetest.get_node(pos)
local meta = minetest.get_meta(pos)
local def = minetest.registered_items[node.name]
if not def or not def.entity_info then return end
local font_size
local line_width
local line_height
local char_width
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local char_width_wide
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local colorbgw
local widemult = 1
if meta:get_int("widefont") == 1 then
widemult = 0.5
end
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 * widemult)
line_height = signs_lib.lineheight31
char_width = signs_lib.charwidth31
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char_width_wide = signs_lib.charwidth_wide31
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colorbgw = signs_lib.colorbgw31
else
font_size = 15
line_width = math.floor(signs_lib.avgwidth15 * def.chars_per_line) * (def.horiz_scaling * widemult)
line_height = signs_lib.lineheight15
char_width = signs_lib.charwidth15
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char_width_wide = signs_lib.charwidth_wide15
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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
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local linetex, ln = make_line_texture(lines[i], lineno, pos, line_width, line_height, char_width, font_size, colorbgw, char_width_wide)
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table.insert(texture, linetex)
lineno = ln + 1
end
table.insert(texture, "^[makealpha:0,0,0")
return table.concat(texture, "")
end
function signs_lib.split_lines_and_words(text)
if not text then return end
local lines = { }
for _, line in ipairs(text:split("\n", true)) do
table.insert(lines, line:split(" "))
end
return lines
end
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function signs_lib.rightclick_sign(pos, node, player, itemstack, pointed_thing)
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if not player or not signs_lib.can_modify(pos, player) then return end
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player:get_meta():set_string("signslib:pos", minetest.pos_to_string(pos))
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minetest.show_formspec(player:get_player_name(), "signs_lib:sign", get_sign_formspec(pos, node.name))
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end
function signs_lib.destruct_sign(pos)
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local meta = minetest.get_meta(pos)
local glow = meta:get_string("glow")
if glow ~= "" and not minetest.is_creative_enabled("") then
local num = tonumber(glow)
minetest.add_item(pos, ItemStack(signs_lib.glow_item .. " " .. num))
end
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signs_lib.delete_objects(pos)
end
local function make_infotext(text)
text = trim_input(text)
local lines = signs_lib.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
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function signs_lib.glow(pos, node, puncher)
local name = puncher:get_player_name()
if minetest.is_protected(pos, name) then
return
end
local tool = puncher:get_wielded_item()
if tool:get_name() == signs_lib.glow_item then
local meta = minetest.get_meta(pos)
local glow = tonumber(meta:get_string("glow"))
if not glow then
glow = 1
elseif glow < 3 then
glow = glow + 1
else
return -- already at brightest level
end
if not minetest.is_creative_enabled(name) then
tool:take_item()
puncher:set_wielded_item(tool)
end
meta:set_string("glow", glow)
end
end
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function signs_lib.update_sign(pos, fields)
local meta = minetest.get_meta(pos)
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-- legacy udpate
if meta:get_string("formspec") ~= "" then
meta:set_string("formspec", "")
end
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local text = fields and fields.text or meta:get_string("text")
text = trim_input(text)
local owner = meta:get_string("owner")
local 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).." ")
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local glow = meta:get_string("glow")
signs_lib.set_obj_text(pos, text, glow)
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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()
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if minetest.is_protected(pos, playername) then
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minetest.record_protection_violation(pos, playername)
return false
end
if owner == ""
or playername == owner
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or (minetest.check_player_privs(playername, {signslib_edit=true}))
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or (playername == minetest.settings:get("name")) then
return true
end
minetest.record_protection_violation(pos, playername)
return false
end
-- 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 not pdef then return end
if signs_lib.check_for_ceiling(pointed_thing) or signs_lib.check_for_floor(pointed_thing) then
return false
end
if type(pdef.check_for_pole) == "function" then
local node = minetest.get_node(pos)
local def = minetest.registered_items[node.name]
return pdef.check_for_pole(pos, node, def, ppos, pnode, pdef)
elseif pdef.check_for_pole
or pdef.drawtype == "fencelike"
or string.find(pnode.name, "_post")
or string.find(pnode.name, "fencepost") then
return true
end
end
function signs_lib.check_for_horizontal_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 not pdef then return end
if signs_lib.check_for_ceiling(pointed_thing) or signs_lib.check_for_floor(pointed_thing) then
return false
end
if type(pdef.check_for_horiz_pole) == "function" then
local node = minetest.get_node(pos)
local def = minetest.registered_items[node.name]
return pdef.check_for_horiz_pole(pos, node, def, ppos, pnode, pdef)
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.check_for_floor(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 controls = placer:get_player_control()
local signname = itemstack:get_name()
local no_wall_name = string.gsub(signname, "_wall", "")
local def = minetest.registered_items[signname]
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 and signs_lib.check_for_pole(pos, pointed_thing) and not controls.sneak then
local newparam2
local lookdir = minetest.yaw_to_dir(placer:get_look_horizontal())
if def.paramtype2 == "wallmounted" then
newparam2 = minetest.dir_to_wallmounted(lookdir)
else
newparam2 = minetest.dir_to_facedir(lookdir)
end
local node = minetest.get_node(pos)
minetest.swap_node(pos, {name = no_wall_name.."_onpole", param2 = newparam2})
elseif def.allow_onpole_horizontal and signs_lib.check_for_horizontal_pole(pos, pointed_thing) and not controls.sneak then
local newparam2
local lookdir = minetest.yaw_to_dir(placer:get_look_horizontal())
if def.paramtype2 == "wallmounted" then
newparam2 = minetest.dir_to_wallmounted(lookdir)
else
newparam2 = minetest.dir_to_facedir(lookdir)
end
local node = minetest.get_node(pos)
minetest.swap_node(pos, {name = no_wall_name.."_onpole_horiz", param2 = newparam2})
elseif def.allow_hanging and signs_lib.check_for_ceiling(pointed_thing) and not controls.sneak then
local newparam2 = minetest.dir_to_facedir(placer:get_look_dir())
local node = minetest.get_node(pos)
minetest.swap_node(pos, {name = no_wall_name.."_hanging", param2 = newparam2})
elseif def.allow_yard and signs_lib.check_for_floor(pointed_thing) and not controls.sneak then
local newparam2 = minetest.dir_to_facedir(placer:get_look_dir())
local node = minetest.get_node(pos)
minetest.swap_node(pos, {name = no_wall_name.."_yard", param2 = newparam2})
elseif def.paramtype2 == "facedir" and signs_lib.check_for_ceiling(pointed_thing) then
minetest.swap_node(pos, {name = signname, param2 = 6})
elseif def.paramtype2 == "facedir" and signs_lib.check_for_floor(pointed_thing) then
minetest.swap_node(pos, {name = signname, param2 = 4})
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
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local use_glow = function(pos, node, puncher, pointed_thing)
if puncher then -- if e.g. a machine tries to punch; only a real person should change the lighting
signs_lib.glow(pos, node, puncher)
end
return signs_lib.update_sign(pos)
end
local glow_drops = function(pos, oldnode, oldmetadata, digger)
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if digger and minetest.is_creative_enabled(digger:get_player_name()) then
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return
end
local glow = oldmetadata and oldmetadata.fields and oldmetadata.fields.glow
if glow then
minetest.add_item(pos, ItemStack(signs_lib.glow_item .. " " .. glow))
end
end
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function signs_lib.register_sign(name, raw_def)
local def = table.copy(raw_def)
if raw_def.entity_info == "standard" then
def.entity_info = {
mesh = "signs_lib_standard_sign_entity_wall.obj",
yaw = signs_lib.wallmounted_yaw
}
elseif raw_def.entity_info then
def.entity_info = raw_def.entity_info
end
def.after_place_node = raw_def.after_place_node or signs_lib.after_place_node
if raw_def.entity_info then
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if def.allow_glow ~= false then
def.on_punch = raw_def.on_punch or use_glow
def.after_dig_node = raw_def.after_dig_node or glow_drops
else
def.on_punch = raw_def.on_punch or signs_lib.update_sign
end
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def.on_rightclick = raw_def.on_rightclick or signs_lib.rightclick_sign
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def.on_destruct = raw_def.on_destruct or signs_lib.destruct_sign
def.number_of_lines = raw_def.number_of_lines or signs_lib.standard_lines
def.horiz_scaling = raw_def.horiz_scaling or signs_lib.standard_hscale
def.vert_scaling = raw_def.vert_scaling or signs_lib.standard_vscale
def.line_spacing = raw_def.line_spacing or signs_lib.standard_lspace
def.font_size = raw_def.font_size or signs_lib.standard_fsize
def.x_offset = raw_def.x_offset or signs_lib.standard_xoffs
def.y_offset = raw_def.y_offset or signs_lib.standard_yoffs
def.chars_per_line = raw_def.chars_per_line or signs_lib.standard_cpl
def.default_color = raw_def.default_color or "0"
if raw_def.locked and not raw_def.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
end
end
def.paramtype = raw_def.paramtype or "light"
def.drawtype = raw_def.drawtype or "mesh"
def.mesh = raw_def.mesh or "signs_lib_standard_sign_wall.obj"
def.wield_image = raw_def.wield_image or def.inventory_image
def.drop = raw_def.drop or name
def.sounds = raw_def.sounds or signs_lib.standard_wood_sign_sounds
def.paramtype2 = raw_def.paramtype2 or "wallmounted"
def.on_rotate = raw_def.on_rotate or signs_lib.handle_rotation
if raw_def.groups then
def.groups = raw_def.groups
else
def.groups = signs_lib.standard_wood_groups
end
local cbox = signs_lib.make_selection_boxes(35, 25)
def.selection_box = raw_def.selection_box or cbox
def.node_box = table.copy(raw_def.node_box or raw_def.selection_box or cbox)
if def.sunlight_propagates ~= false then
def.sunlight_propagates = true
end
def.tiles[3] = "signs_lib_blank.png"
def.tiles[4] = "signs_lib_blank.png"
def.tiles[5] = "signs_lib_blank.png"
def.tiles[6] = "signs_lib_blank.png"
minetest.register_node(":"..name, def)
table.insert(signs_lib.lbm_restore_nodes, name)
local no_wall_name = string.gsub(name, "_wall", "")
local othermounts_def = table.copy(def)
if raw_def.allow_onpole or raw_def.allow_onpole_horizontal then
local offset = 0.3125
if othermounts_def.uses_slim_pole_mount then
offset = 0.35
end
othermounts_def.selection_box = raw_def.onpole_selection_box or othermounts_def.selection_box
othermounts_def.node_box = raw_def.onpole_node_box or othermounts_def.selection_box
if othermounts_def.paramtype2 == "wallmounted" then
othermounts_def.node_box.wall_side[1] = def.node_box.wall_side[1] - offset
othermounts_def.node_box.wall_side[4] = def.node_box.wall_side[4] - offset
othermounts_def.selection_box.wall_side[1] = def.selection_box.wall_side[1] - offset
othermounts_def.selection_box.wall_side[4] = def.selection_box.wall_side[4] - offset
else
othermounts_def.node_box.fixed[3] = def.node_box.fixed[3] + offset
othermounts_def.node_box.fixed[6] = def.node_box.fixed[6] + offset
othermounts_def.selection_box.fixed[3] = def.selection_box.fixed[3] + offset
othermounts_def.selection_box.fixed[6] = def.selection_box.fixed[6] + offset
end
othermounts_def.groups.not_in_creative_inventory = 1
othermounts_def.mesh = raw_def.onpole_mesh or string.gsub(othermounts_def.mesh, "wall.obj$", "onpole.obj")
if othermounts_def.entity_info then
othermounts_def.entity_info.mesh = string.gsub(othermounts_def.entity_info.mesh, "entity_wall.obj$", "entity_onpole.obj")
end
end
-- setting one of item 3 or 4 to a texture and leaving the other "blank",
-- reveals either the vertical or horizontal pole mount part of the model
if raw_def.allow_onpole then
othermounts_def.tiles[3] = raw_def.tiles[3] or "signs_lib_pole_mount.png"
othermounts_def.tiles[4] = "signs_lib_blank.png"
othermounts_def.tiles[5] = "signs_lib_blank.png"
othermounts_def.tiles[6] = "signs_lib_blank.png"
minetest.register_node(":"..no_wall_name.."_onpole", othermounts_def)
table.insert(signs_lib.lbm_restore_nodes, no_wall_name.."_onpole")
end
if raw_def.allow_onpole_horizontal then
local onpole_horiz_def = table.copy(othermounts_def)
onpole_horiz_def.tiles[3] = "signs_lib_blank.png"
onpole_horiz_def.tiles[4] = raw_def.tiles[3] or "signs_lib_pole_mount.png"
onpole_horiz_def.tiles[5] = "signs_lib_blank.png"
onpole_horiz_def.tiles[6] = "signs_lib_blank.png"
minetest.register_node(":"..no_wall_name.."_onpole_horiz", onpole_horiz_def)
table.insert(signs_lib.lbm_restore_nodes, no_wall_name.."_onpole_horiz")
end
if raw_def.allow_hanging then
local hanging_def = table.copy(def)
hanging_def.paramtype2 = "facedir"
local hcbox = signs_lib.make_selection_boxes(35, 32, nil, 0, 3, -18.5, true)
hanging_def.selection_box = raw_def.hanging_selection_box or hcbox
hanging_def.node_box = raw_def.hanging_node_box or raw_def.hanging_selection_box or hcbox
hanging_def.groups.not_in_creative_inventory = 1
hanging_def.tiles[3] = raw_def.tiles[4] or "signs_lib_hangers.png"
hanging_def.tiles[4] = "signs_lib_blank.png"
hanging_def.tiles[5] = "signs_lib_blank.png"
hanging_def.tiles[6] = "signs_lib_blank.png"
hanging_def.mesh = raw_def.hanging_mesh or string.gsub(string.gsub(hanging_def.mesh, "wall.obj$", "hanging.obj"), "_facedir", "")
if hanging_def.entity_info then
hanging_def.entity_info.mesh = string.gsub(string.gsub(hanging_def.entity_info.mesh, "entity_wall.obj$", "entity_hanging.obj"), "_facedir", "")
hanging_def.entity_info.yaw = signs_lib.standard_yaw
end
minetest.register_node(":"..no_wall_name.."_hanging", hanging_def)
table.insert(signs_lib.lbm_restore_nodes, no_wall_name.."_hanging")
end
if raw_def.allow_yard then
local ydef = table.copy(def)
ydef.paramtype2 = "facedir"
local ycbox = signs_lib.make_selection_boxes(35, 34.5, false, 0, -1.25, -19.69, true)
ydef.selection_box = raw_def.yard_selection_box or ycbox
ydef.tiles[3] = raw_def.tiles[5] or "default_wood.png"
ydef.tiles[4] = "signs_lib_blank.png"
ydef.tiles[5] = "signs_lib_blank.png"
ydef.tiles[6] = "signs_lib_blank.png"
ydef.node_box = raw_def.yard_node_box or raw_def.yard_selection_box or ycbox
ydef.groups.not_in_creative_inventory = 1
ydef.mesh = raw_def.yard_mesh or string.gsub(string.gsub(ydef.mesh, "wall.obj$", "yard.obj"), "_facedir", "")
if ydef.entity_info then
ydef.entity_info.mesh = string.gsub(string.gsub(ydef.entity_info.mesh, "entity_wall.obj$", "entity_yard.obj"), "_facedir", "")
ydef.entity_info.yaw = signs_lib.standard_yaw
end
minetest.register_node(":"..no_wall_name.."_yard", ydef)
table.insert(signs_lib.lbm_restore_nodes, no_wall_name.."_yard")
end
if raw_def.allow_widefont then
table.insert(signs_lib.old_widefont_signs, name.."_widefont")
table.insert(signs_lib.old_widefont_signs, name.."_widefont_onpole")
table.insert(signs_lib.old_widefont_signs, name.."_widefont_hanging")
table.insert(signs_lib.old_widefont_signs, name.."_widefont_yard")
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]
signs_lib.delete_objects(pos)
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
})
-- Convert widefont sign nodes to use one base node with meta flag to select wide mode
minetest.register_lbm({
nodenames = signs_lib.old_widefont_signs,
name = "signs_lib:convert_widefont_signs",
label = "Convert widefont sign nodes",
run_at_every_load = false,
action = function(pos, node)
local basename = string.gsub(node.name, "_widefont", "")
minetest.swap_node(pos, {name = basename, param2 = node.param2})
local meta = minetest.get_meta(pos)
meta:set_int("widefont", 1)
signs_lib.update_sign(pos)
end
})
-- 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 = "",
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
signs_lib.delete_objects(pos)
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
})
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minetest.register_privilege("signslib_edit", {})
--
-- local functions
--
function get_sign_formspec(pos, nodename)
local meta = minetest.get_meta(pos)
local txt = meta:get_string("text")
local formspec = {
"size[6,4]",
"background[-0.5,-0.5;7,5;signs_lib_sign_bg.png]",
"image[0.1,2.4;7,1;signs_lib_sign_color_palette.png]",
"textarea[0.15,-0.2;6.3,2.8;text;;" .. minetest.formspec_escape(txt) .. "]",
"button_exit[3,3.4;2,1;ok;" .. S("Write") .. "]"
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}
if minetest.registered_nodes[nodename].allow_widefont then
local state = "off"
if meta:get_int("widefont") == 1 then state = "on" end
formspec[#formspec+1] = "label[0.9,3.4;Use wide font]"
formspec[#formspec+1] = "image_button[1.1,3.7;1,0.6;signs_lib_switch_" .. state .. ".png;"
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.. state .. ";;;false;signs_lib_switch_interm.png]"
end
return table.concat(formspec, "")
end
minetest.register_on_player_receive_fields(function(player, formname, fields)
if formname ~= "signs_lib:sign" then return end
local pos_string = player:get_meta():get_string("signslib:pos")
local pos = minetest.string_to_pos(pos_string)
local playername = player:get_player_name()
if fields.text and fields.ok then
minetest.log("action", S("@1 wrote \"@2\" to sign at @3",
(playername or ""),
fields.text:gsub('\\', '\\\\'):gsub("\n", "\\n"),
pos_string
))
signs_lib.update_sign(pos, fields)
elseif fields.on or fields.off then
local node = minetest.get_node(pos)
local meta = minetest.get_meta(pos)
local change
if fields.on and meta:get_int("widefont") == 1 then
meta:set_int("widefont", 0)
change = true
elseif fields.off and meta:get_int("widefont") == 0 then
meta:set_int("widefont", 1)
change = true
end
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if change then
minetest.log("action", S("@1 flipped the wide-font switch to \"@2\" at @3",
(playername or ""),
(fields.on and "off" or "on"),
minetest.pos_to_string(pos)
))
signs_lib.update_sign(pos, fields)
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minetest.show_formspec(playername, "signs_lib:sign", get_sign_formspec(pos, node.name))
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end
end
end)