Mineclonia/mods/ITEMS/mcl_signs/init.lua

576 lines
16 KiB
Lua

local S = minetest.get_translator("mcl_signs")
local F = minetest.formspec_escape
-- Load the characters map (characters.txt)
--[[ File format of characters.txt:
It's an UTF-8 encoded text file that contains metadata for all supported characters. It contains a sequence of info blocks, one for each character. Each info block is made out of 3 lines:
Line 1: The literal UTF-8 encoded character
Line 2: Name of the texture file for this character minus the “.png” suffix; found in the “textures/” sub-directory
Line 3: Currently ignored. Previously this was for the character width in pixels
After line 3, another info block may follow. This repeats until the end of the file.
All character files must be 5 or 6 pixels wide (5 pixels are preferred)
]]
local chars_file = io.open(minetest.get_modpath("mcl_signs").."/characters.txt", "r")
-- FIXME: Support more characters (many characters are missing). Currently ASCII and Latin-1 Supplement are supported.
local charmap = {}
if not chars_file then
minetest.log("error", "[mcl_signs] : character map file not found")
else
while true do
local char = chars_file:read("*l")
if char == nil then
break
end
local img = chars_file:read("*l")
chars_file:read("*l")
charmap[char] = img
end
end
-- CONSTANTS
local SIGN_WIDTH = 115
local LINE_LENGTH = 15
local NUMBER_OF_LINES = 4
local LINE_HEIGHT = 14
local CHAR_WIDTH = 5
-- Helper functions
local function round(num, idp)
local mult = 10^(idp or 0)
return math.floor(num * mult + 0.5) / mult
end
local string_to_array = function(str)
local tab = {}
for i=1,string.len(str) do
table.insert(tab, string.sub(str, i,i))
end
return tab
end
local string_to_line_array = function(str)
local tab = {}
local current = 1
local linechar = 1
tab[1] = ""
for _,char in ipairs(string_to_array(str)) do
-- New line
if char == "\n" then
current = current + 1
tab[current] = ""
linechar = 1
else
tab[current] = tab[current]..char
linechar = linechar + 1
end
end
return tab
end
local create_lines = function(text)
local line_num = 1
local tab = {}
for _, line in ipairs(string_to_line_array(text)) do
if line_num > NUMBER_OF_LINES then
break
end
table.insert(tab, line)
line_num = line_num + 1
end
return tab
end
local generate_line = function(s, ypos)
local i = 1
local parsed = {}
local width = 0
local chars = 0
local printed_char_width = CHAR_WIDTH + 1
while chars < LINE_LENGTH and i <= #s do
local file = nil
-- Get and render character
if charmap[s:sub(i, i)] ~= nil then
file = charmap[s:sub(i, i)]
i = i + 1
elseif i < #s and charmap[s:sub(i, i + 1)] ~= nil then
file = charmap[s:sub(i, i + 1)]
i = i + 2
else
-- No character image found.
-- Use replacement character:
file = "_rc"
i = i + 1
minetest.log("verbose", "[mcl_signs] Unknown symbol in '"..s.."' at "..i)
end
if file ~= nil then
width = width + printed_char_width
table.insert(parsed, file)
chars = chars + 1
end
end
width = width - 1
local texture = ""
local xpos = math.floor((SIGN_WIDTH - width) / 2)
for i = 1, #parsed do
texture = texture..":"..xpos..","..ypos.."="..parsed[i]..".png"
xpos = xpos + printed_char_width
end
return texture
end
local generate_texture = function(lines, signnodename)
local texture = "[combine:"..SIGN_WIDTH.."x"..SIGN_WIDTH
local ypos
if signnodename == "mcl_signs:wall_sign" then
ypos = 30
else
ypos = 0
end
for i = 1, #lines do
texture = texture..generate_line(lines[i], ypos)
ypos = ypos + LINE_HEIGHT
end
return texture
end
local n = 23/56 - 1/128
local signtext_info_wall = {
{delta = {x = 0, y = 0, z = n}, yaw = 0},
{delta = {x = n, y = 0, z = 0}, yaw = math.pi / -2},
{delta = {x = 0, y = 0, z = -n}, yaw = math.pi},
{delta = {x = -n, y = 0, z = 0}, yaw = math.pi / 2},
}
local signtext_info_standing = {}
local m = -1/16 + 1/64
for rot=0, 15 do
local yaw = math.pi*2 - (((math.pi*2) / 16) * rot)
local delta = vector.multiply(minetest.yaw_to_dir(yaw), m)
-- Offset because sign is a bit above node boundaries
delta.y = delta.y + 2/28
table.insert(signtext_info_standing, { delta = delta, yaw = yaw })
end
local function get_rotation_level(facedir, nodename)
local rl = facedir * 4
if nodename == "mcl_signs:standing_sign22_5" then
rl = rl + 1
elseif nodename == "mcl_signs:standing_sign45" then
rl = rl + 2
elseif nodename == "mcl_signs:standing_sign67_5" then
rl = rl + 3
end
return rl
end
local function get_wall_signtext_info(param2, nodename)
local dir = minetest.wallmounted_to_dir(param2)
if dir.x > 0 then
return 2
elseif dir.z > 0 then
return 1
elseif dir.x < 0 then
return 4
else
return 3
end
end
local sign_groups = {handy=1,axey=1, flammable=1, deco_block=1, material_wood=1, attached_node=1, dig_by_piston=1}
local destruct_sign = function(pos)
local objects = minetest.get_objects_inside_radius(pos, 0.5)
for _, v in ipairs(objects) do
local ent = v:get_luaentity()
if ent and ent.name == "mcl_signs:text" then
v:remove()
end
end
local players = minetest.get_connected_players()
for p=1, #players do
minetest.close_formspec(players[p]:get_player_name(), "mcl_signs:set_text_"..pos.x.."_"..pos.y.."_"..pos.z)
end
end
local update_sign = function(pos, fields, sender, force_remove)
local meta = minetest.get_meta(pos)
if not meta then
return
end
local text = meta:get_string("text")
if fields and (text == "" and fields.text) then
meta:set_string("text", fields.text)
text = fields.text
end
if text == nil then
text = ""
end
local sign_info
local n = minetest.get_node(pos)
local nn = n.name
if nn == "mcl_signs:standing_sign" or nn == "mcl_signs:standing_sign22_5" or nn == "mcl_signs:standing_sign45" or nn == "mcl_signs:standing_sign67_5" then
sign_info = signtext_info_standing[get_rotation_level(n.param2, nn) + 1]
elseif nn == "mcl_signs:wall_sign" then
sign_info = signtext_info_wall[get_wall_signtext_info(n.param2)]
end
if sign_info == nil then
minetest.log("error", "[mcl_signs] Missing sign_info!")
return
end
local objects = minetest.get_objects_inside_radius(pos, 0.5)
local text_entity
for _, v in ipairs(objects) do
local ent = v:get_luaentity()
if ent and ent.name == "mcl_signs:text" then
if force_remove then
v:remove()
else
text_entity = v
break
end
end
end
if not text_entity then
text_entity = minetest.add_entity({
x = pos.x + sign_info.delta.x,
y = pos.y + sign_info.delta.y,
z = pos.z + sign_info.delta.z}, "mcl_signs:text")
end
text_entity:get_luaentity()._signnodename = nn
text_entity:set_properties({textures={generate_texture(create_lines(text), nn)}})
text_entity:set_yaw(sign_info.yaw)
end
local show_formspec = function(player, pos)
minetest.show_formspec(
player:get_player_name(),
"mcl_signs:set_text_"..pos.x.."_"..pos.y.."_"..pos.z,
"size[6,3]textarea[0.25,0.25;6,1.5;text;"..F(S("Enter sign text:"))..";]label[0,1.5;"..F(S("Maximum line length: 15")).."\n"..F(S("Maximum lines: 4")).."]button_exit[0,2.5;6,1;submit;"..F(S("Done")).."]"
)
end
minetest.register_on_player_receive_fields(function(player, formname, fields)
if formname:find("mcl_signs:set_text_") == 1 then
local x, y, z = formname:match("mcl_signs:set_text_(.-)_(.-)_(.*)")
local pos = {x=tonumber(x), y=tonumber(y), z=tonumber(z)}
if not pos or not pos.x or not pos.y or not pos.z then return end
update_sign(pos, fields, player)
end
end)
local node_sounds
if minetest.get_modpath("mcl_sounds") then
node_sounds = mcl_sounds.node_sound_wood_defaults()
end
minetest.register_node("mcl_signs:wall_sign", {
description = S("Sign"),
_tt_help = S("Can be written"),
_doc_items_longdesc = S("Signs can be written and come in two variants: Wall sign and sign on a sign post. Signs can be placed on the top and the sides of other blocks, but not below them."),
_doc_items_usagehelp = S("After placing the sign, you can write something on it. You have 4 lines of text with up to 15 characters for each line; anything beyond these limits is lost. Not all characters are supported. The text can not be changed once it has been written; you have to break and place the sign again."),
inventory_image = "default_sign.png",
walkable = false,
is_ground_content = false,
wield_image = "default_sign.png",
node_placement_prediction = "",
paramtype = "light",
sunlight_propagates = true,
paramtype2 = "wallmounted",
drawtype = "mesh",
mesh = "mcl_signs_signonwallmount.obj",
selection_box = {type = "wallmounted", wall_side = {-0.5, -7/28, -0.5, -23/56, 7/28, 0.5}},
tiles = {"mcl_signs_sign.png"},
groups = sign_groups,
stack_max = 16,
sounds = node_sounds,
on_place = function(itemstack, placer, pointed_thing)
local above = pointed_thing.above
local under = pointed_thing.under
-- Use pointed node's on_rightclick function first, if present
local node_under = minetest.get_node(under)
if placer and not placer:get_player_control().sneak then
if minetest.registered_nodes[node_under.name] and minetest.registered_nodes[node_under.name].on_rightclick then
return minetest.registered_nodes[node_under.name].on_rightclick(under, node_under, placer, itemstack) or itemstack
end
end
local dir = vector.subtract(under, above)
-- Only build when it's legal
local abovenodedef = minetest.registered_nodes[minetest.get_node(above).name]
if not abovenodedef or abovenodedef.buildable_to == false then
return itemstack
end
local wdir = minetest.dir_to_wallmounted(dir)
local placer_pos = placer:get_pos()
local fdir = minetest.dir_to_facedir(dir)
local sign_info
local nodeitem = ItemStack(itemstack)
-- Ceiling
if wdir == 0 then
--how would you add sign to ceiling?
return itemstack
-- Floor
elseif wdir == 1 then
-- Standing sign
-- Determine the sign rotation based on player's yaw
local yaw = math.pi*2 - placer:get_look_horizontal()
-- Select one of 16 possible rotations (0-15)
local rotation_level = round((yaw / (math.pi*2)) * 16)
if rotation_level > 15 then
rotation_level = 0
elseif rotation_level < 0 then
rotation_level = 15
end
-- The actual rotation is a combination of predefined mesh and facedir (see node definition)
if rotation_level % 4 == 0 then
nodeitem:set_name("mcl_signs:standing_sign")
elseif rotation_level % 4 == 1 then
nodeitem:set_name("mcl_signs:standing_sign22_5")
elseif rotation_level % 4 == 2 then
nodeitem:set_name("mcl_signs:standing_sign45")
elseif rotation_level % 4 == 3 then
nodeitem:set_name("mcl_signs:standing_sign67_5")
end
fdir = math.floor(rotation_level / 4)
-- Place the node!
local _, success = minetest.item_place_node(nodeitem, placer, pointed_thing, fdir)
if not success then
return itemstack
end
if not minetest.settings:get_bool("creative_mode") then
itemstack:take_item()
end
sign_info = signtext_info_standing[rotation_level + 1]
-- Side
else
-- Wall sign
local _, success = minetest.item_place_node(itemstack, placer, pointed_thing, wdir)
if not success then
return itemstack
end
sign_info = signtext_info_wall[fdir + 1]
end
-- Determine spawn position of entity
local place_pos
if minetest.registered_nodes[node_under.name].buildable_to then
place_pos = under
else
place_pos = above
end
local text_entity = minetest.add_entity({
x = place_pos.x + sign_info.delta.x,
y = place_pos.y + sign_info.delta.y,
z = place_pos.z + sign_info.delta.z}, "mcl_signs:text")
text_entity:set_yaw(sign_info.yaw)
text_entity:get_luaentity()._signnodename = nodeitem:get_name()
minetest.sound_play({name="default_place_node_hard", gain=1.0}, {pos = place_pos}, true)
show_formspec(placer, place_pos)
return itemstack
end,
on_destruct = destruct_sign,
on_punch = function(pos, node, puncher)
update_sign(pos)
end,
on_rotate = function(pos, node, user, mode)
if mode == screwdriver.ROTATE_FACE then
local r = screwdriver.rotate.wallmounted(pos, node, mode)
node.param2 = r
minetest.swap_node(pos, node)
update_sign(pos, nil, nil, true)
return true
else
return false
end
end,
_mcl_hardness = 1,
_mcl_blast_resistance = 5,
})
-- Standing sign nodes.
-- 4 rotations at 0°, 22.5°, 45° and 67.5°.
-- These are 4 out of 16 possible rotations.
-- With facedir the remaining 12 rotations are constructed.
-- 0°
local ssign = {
paramtype = "light",
sunlight_propagates = true,
walkable = false,
is_ground_content = false,
paramtype2 = "facedir",
drawtype = "mesh",
mesh = "mcl_signs_sign.obj",
selection_box = {type = "fixed", fixed = {-0.2, -0.5, -0.2, 0.2, 0.5, 0.2}},
tiles = {"mcl_signs_sign.png"},
groups = sign_groups,
drop = "mcl_signs:wall_sign",
stack_max = 16,
sounds = node_sounds,
on_destruct = destruct_sign,
on_punch = function(pos, node, puncher)
update_sign(pos)
end,
on_rotate = function(pos, node, user, mode)
if mode == screwdriver.ROTATE_FACE then
node.name = "mcl_signs:standing_sign22_5"
minetest.swap_node(pos, node)
elseif mode == screwdriver.ROTATE_AXIS then
return false
end
update_sign(pos, nil, nil, true)
return true
end,
_mcl_hardness = 1,
_mcl_blast_resistance = 5,
}
minetest.register_node("mcl_signs:standing_sign", ssign)
-- 22.5°
local ssign22_5 = table.copy(ssign)
ssign22_5.mesh = "mcl_signs_sign22.5.obj"
ssign22_5.on_rotate = function(pos, node, user, mode)
if mode == screwdriver.ROTATE_FACE then
node.name = "mcl_signs:standing_sign45"
minetest.swap_node(pos, node)
elseif mode == screwdriver.ROTATE_AXIS then
return false
end
update_sign(pos, nil, nil, true)
return true
end
minetest.register_node("mcl_signs:standing_sign22_5", ssign22_5)
-- 45°
local ssign45 = table.copy(ssign)
ssign45.mesh = "mcl_signs_sign45.obj"
ssign45.on_rotate = function(pos, node, user, mode)
if mode == screwdriver.ROTATE_FACE then
node.name = "mcl_signs:standing_sign67_5"
minetest.swap_node(pos, node)
elseif mode == screwdriver.ROTATE_AXIS then
return false
end
update_sign(pos, nil, nil, true)
return true
end
minetest.register_node("mcl_signs:standing_sign45", ssign45)
-- 67.5°
local ssign67_5 = table.copy(ssign)
ssign67_5.mesh = "mcl_signs_sign67.5.obj"
ssign67_5.on_rotate = function(pos, node, user, mode)
if mode == screwdriver.ROTATE_FACE then
node.name = "mcl_signs:standing_sign"
node.param2 = (node.param2 + 1) % 4
minetest.swap_node(pos, node)
elseif mode == screwdriver.ROTATE_AXIS then
return false
end
update_sign(pos, nil, nil, true)
return true
end
minetest.register_node("mcl_signs:standing_sign67_5", ssign67_5)
-- FIXME: Prevent entity destruction by /clearobjects
minetest.register_entity("mcl_signs:text", {
pointable = false,
visual = "upright_sprite",
textures = {},
physical = false,
collide_with_objects = false,
_signnodename = nil, -- node name of sign node to which the text belongs
on_activate = function(self, staticdata)
if staticdata ~= nil and staticdata ~= "" then
local des = minetest.deserialize(staticdata)
if des then
self._signnodename = des._signnodename
end
end
local meta = minetest.get_meta(self.object:get_pos())
local text = meta:get_string("text")
self.object:set_properties({
textures={generate_texture(create_lines(text), self._signnodename)},
})
self.object:set_armor_groups({ immortal = 1 })
end,
get_staticdata = function(self)
local out = { _signnodename = self._signnodename }
return minetest.serialize(out)
end,
})
minetest.register_craft({
type = "fuel",
recipe = "mcl_signs:wall_sign",
burntime = 10,
})
if minetest.get_modpath("mcl_core") then
minetest.register_craft({
output = 'mcl_signs:wall_sign 3',
recipe = {
{'group:wood', 'group:wood', 'group:wood'},
{'group:wood', 'group:wood', 'group:wood'},
{'', 'mcl_core:stick', ''},
}
})
end
if minetest.get_modpath("doc") then
doc.add_entry_alias("nodes", "mcl_signs:wall_sign", "nodes", "mcl_signs:standing_sign")
doc.add_entry_alias("nodes", "mcl_signs:wall_sign", "nodes", "mcl_signs:standing_sign22_5")
doc.add_entry_alias("nodes", "mcl_signs:wall_sign", "nodes", "mcl_signs:standing_sign45")
doc.add_entry_alias("nodes", "mcl_signs:wall_sign", "nodes", "mcl_signs:standing_sign67_5")
end
minetest.register_alias("signs:sign_wall", "mcl_signs:wall_sign")
minetest.register_alias("signs:sign_yard", "mcl_signs:standing_sign")
minetest.register_lbm({
name = "mcl_signs:respawn_entities",
label = "Respawn sign text entities",
run_at_every_load = true,
nodenames = { "mcl_signs:wall_sign", "mcl_signs:standing_sign", "mcl_signs:standing_sign22_5", "mcl_signs:standing_sign45", "mcl_signs:standing_sign67_5" },
action = function(pos, node)
update_sign(pos)
end,
})
if minetest.settings:get_bool("log_mods") then
minetest.log("action", "[mcl_signs] loaded")
end