VoxeLibre/mods/ITEMS/mcl_signs/init.lua
2017-07-25 03:33:54 +02:00

373 lines
10 KiB
Lua

-- Font: 04.jp.org
-- load characters map
local chars_file = io.open(minetest.get_modpath("mcl_signs").."/characters", "r")
-- FIXME: Support more characters (many characters are missing)
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
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
-- This check cuts off overlong lines
elseif linechar <= LINE_LENGTH then
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
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
minetest.log("warning", "[mcl_signs] Unknown symbol in '"..s.."' at "..i.." (probably "..s:sub(i, i)..")")
i = i + 1
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)
local texture = "[combine:"..SIGN_WIDTH.."x"..SIGN_WIDTH
local ypos = 9
for i = 1, #lines do
texture = texture..generate_line(lines[i], ypos)
ypos = ypos + LINE_HEIGHT
end
return texture
end
local n = 7/16 - 1/128
local signs = {
{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 m = 1/32 + 1/128
local signs_yard = {
{delta = {x = 0, y = 0, z = -m}, yaw = 0},
{delta = {x = -m, y = 0, z = 0}, yaw = math.pi / -2},
{delta = {x = 0, y = 0, z = m}, yaw = math.pi},
{delta = {x = m, y = 0, z = 0}, yaw = math.pi / 2},
}
local sign_groups = {handy=1,axey=1, flammable=1, deco_block=1, material_wood=1, attached_node=1}
local destruct_sign = function(pos)
local objects = minetest.get_objects_inside_radius(pos, 0.5)
for _, v in ipairs(objects) do
if v:get_entity_name() == "mcl_signs:text" then
v:remove()
end
end
end
local update_sign = function(pos, fields, sender)
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 objects = minetest.get_objects_inside_radius(pos, 0.5)
for _, v in ipairs(objects) do
if v:get_entity_name() == "mcl_signs:text" then
v:set_properties({textures={generate_texture(create_lines(text))}})
return
end
end
-- if there is no entity
local sign_info
if minetest.get_node(pos).name == "mcl_signs:standing_sign" then
sign_info = signs_yard[minetest.get_node(pos).param2 + 1]
elseif minetest.get_node(pos).name == "mcl_signs:wall_sign" then
sign_info = signs[minetest.get_node(pos).param2 + 1]
end
if sign_info == nil then
return
end
local 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")
text_entity:setyaw(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;Edit sign text:;]label[0,1.5;Maximum line length: 15\nMaximum lines: 4]button_exit[0,2.5;6,1;submit;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)
minetest.register_node("mcl_signs:wall_sign", {
description = "Sign",
_doc_items_longdesc = "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 = "Place the sign at the side to build a wall sign, place it on top of another block to build a sign with a sign post.\nAfter 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. 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 = "nodebox",
node_box = {type = "wallmounted", wall_side = {-0.499, -1/16, -7/16, -7/16, 7/16, 7/16}},
tiles = {"signs_wall.png"},
groups = sign_groups,
stack_max = 16,
sounds = mcl_sounds.node_sound_wood_defaults(),
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 = minetest.get_node(under)
if placer and not placer:get_player_control().sneak then
if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].on_rightclick then
return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack) or itemstack
end
end
local dir = {x = under.x - above.x,
y = under.y - above.y,
z = under.z - above.z}
-- 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:getpos()
if placer_pos then
dir = {
x = above.x - placer_pos.x,
y = above.y - placer_pos.y,
z = above.z - placer_pos.z
}
end
local fdir = minetest.dir_to_facedir(dir)
local sign_info
local place_pos
if wdir == 0 then
--how would you add sign to ceiling?
return itemstack
elseif wdir == 1 then
place_pos = above
local stand = ItemStack(itemstack)
stand:set_name("mcl_signs:standing_sign")
local _, success = minetest.item_place_node(stand, placer, pointed_thing, fdir)
if not success then
return itemstack
end
sign_info = signs_yard[fdir + 1]
else
place_pos = above
local _, success = minetest.item_place_node(itemstack, placer, pointed_thing, wdir)
if not success then
return itemstack
end
sign_info = signs[fdir + 1]
end
local text = 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:setyaw(sign_info.yaw)
if not minetest.setting_getbool("creative_mode") then
itemstack:take_item()
end
minetest.sound_play({name="default_place_node_hard", gain=1.0}, {pos = place_pos})
show_formspec(placer, place_pos)
return itemstack
end,
on_destruct = destruct_sign,
on_receive_fields = function(pos, formname, fields, sender)
update_sign(pos, fields, sender)
end,
on_punch = function(pos, node, puncher)
update_sign(pos)
end,
_mcl_hardness = 1,
_mcl_blast_resistance = 5,
})
minetest.register_node("mcl_signs:standing_sign", {
paramtype = "light",
sunlight_propagates = true,
walkable = false,
is_ground_content = false,
paramtype2 = "facedir",
drawtype = "nodebox",
node_box = {type = "fixed", fixed = {
{-7/16, -1/16, -1/32, 7/16, 7/16, 1/32},
{-1/16, -0.5, -1/32, 1/16, -1/16, 1/32},
}},
selection_box = {type = "fixed", fixed = {-7/16, -0.5, -1/32, 7/16, 7/16, 1/32}},
tiles = {"signs_top.png", "signs_bottom.png", "signs_side.png", "signs_side.png", "signs_back.png", "signs_front.png"},
groups = sign_groups,
drop = "mcl_signs:wall_sign",
stack_max = 16,
sounds = mcl_sounds.node_sound_wood_defaults(),
on_destruct = destruct_sign,
on_receive_fields = function(pos, formname, fields, sender)
update_sign(pos, fields, sender)
end,
on_punch = function(pos, node, puncher)
update_sign(pos)
end,
_mcl_hardness = 1,
_mcl_blast_resistance = 5,
})
minetest.register_entity("mcl_signs:text", {
collisionbox = { 0, 0, 0, 0, 0, 0 },
visual = "upright_sprite",
textures = {},
physical = false,
collide_with_objects = false,
on_activate = function(self)
local meta = minetest.get_meta(self.object:getpos())
local text = meta:get_string("text")
self.object:set_properties({
textures={generate_texture(create_lines(text))},
})
self.object:set_armor_groups({ immortal = 1 })
end
})
if minetest.setting_get("log_mods") then
minetest.log("action", "[mcl_signs] loaded")
end
minetest.register_craft({
type = "fuel",
recipe = "mcl_signs:wall_sign",
burntime = 10,
})
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', ''},
}
})
if minetest.get_modpath("doc") then
doc.add_entry_alias("nodes", "mcl_signs:wall_sign", "nodes", "mcl_signs:standing_sign")
end
minetest.register_alias("signs:sign_wall", "mcl_signs:wall_sign")
minetest.register_alias("signs:sign_yard", "mcl_signs:standing_sign")