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--* parts are currently not possible because you cannot set the pitch of an entity from lua
-- Font: 04.jp.org
-- load characters map
local chars_file = io.open(minetest.get_modpath("digilines_lcd").."/characters", "r")
local charmap = {}
local max_chars = 12
if not chars_file then
print("[digilines_lcd] E: 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
local lcds = {
-- on ceiling
--* [0] = {delta = {x = 0, y = 0.4, z = 0}, pitch = math.pi / -2},
-- on ground
--* [1] = {delta = {x = 0, y =-0.4, z = 0}, pitch = math.pi / 2},
-- sides
[2] = {delta = {x = 0.4, y = 0, z = 0}, yaw = math.pi / -2},
[3] = {delta = {x = -0.4, y = 0, z = 0}, yaw = math.pi / 2},
[4] = {delta = {x = 0, y = 0, z = 0.4}, yaw = 0},
[5] = {delta = {x = 0, y = 0, z = -0.4}, yaw = math.pi},
}
local reset_meta = function(pos)
minetest.get_meta(pos):set_string("formspec", "field[channel;Channel;${channel}]")
end
local clearscreen = function(pos)
local objects = minetest.get_objects_inside_radius(pos, 0.5)
for _, o in ipairs(objects) do
local o_entity = o:get_luaentity()
if o_entity and o_entity.name == "digilines_lcd:text" then
o:remove()
end
end
end
local prepare_writing = function(pos)
local lcd_info = lcds[minetest.get_node(pos).param2]
if lcd_info == nil then return end
local text = minetest.add_entity(
{x = pos.x + lcd_info.delta.x,
y = pos.y + lcd_info.delta.y,
z = pos.z + lcd_info.delta.z}, "digilines_lcd:text")
text:setyaw(lcd_info.yaw or 0)
--* text:setpitch(lcd_info.yaw or 0)
return text
end
local on_digiline_receive = function(pos, node, channel, msg)
local meta = minetest.get_meta(pos)
local setchan = meta:get_string("channel")
if setchan ~= channel then return end
meta:set_string("text", msg)
meta:set_string("infotext", msg)
clearscreen(pos)
if msg ~= "" then
prepare_writing(pos)
end
end
local lcd_box = {
type = "wallmounted",
wall_top = {-8/16, 7/16, -8/16, 8/16, 8/16, 8/16}
}
minetest.register_node("digilines_lcd:lcd", {
drawtype = "nodebox",
description = "Digiline LCD",
inventory_image = "lcd_lcd.png",
wield_image = "lcd_lcd.png",
tiles = {"lcd_anyside.png"},
paramtype = "light",
sunlight_propagates = true,
paramtype2 = "wallmounted",
node_box = lcd_box,
selection_box = lcd_box,
groups = {choppy = 3, dig_immediate = 2},
after_place_node = function (pos, placer, itemstack)
local param2 = minetest.get_node(pos).param2
if param2 == 0 or param2 == 1 then
minetest.add_node(pos, {name = "digilines_lcd:lcd", param2 = 3})
end
prepare_writing (pos)
end,
on_construct = function(pos)
reset_meta(pos)
end,
on_destruct = function(pos)
clearscreen(pos)
end,
on_receive_fields = function(pos, formname, fields, sender)
if (fields.channel) then
minetest.get_meta(pos):set_string("channel", fields.channel)
end
end,
digiline =
{
receptor = {},
effector = {
action = on_digiline_receive
},
},
light_source = 6,
})
minetest.register_entity("digilines_lcd:text", {
collisionbox = { 0, 0, 0, 0, 0, 0 },
visual = "upright_sprite",
textures = {},
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))}})
end
})
-- CONSTANTS
local LCD_WITH = 100
local LCD_PADDING = 8
local LINE_LENGTH = 12
local NUMBER_OF_LINES = 5
local LINE_HEIGHT = 14
local CHAR_WIDTH = 5
create_lines = function(text)
local line = ""
local line_num = 1
local tab = {}
for word in string.gmatch(text, "%S+") do
if string.len(line)+string.len(word) < LINE_LENGTH and word ~= "|" then
if line ~= "" then
line = line.." "..word
else
line = word
end
else
table.insert(tab, line)
if word ~= "|" then
line = word
else
line = ""
end
line_num = line_num+1
if line_num > NUMBER_OF_LINES then
return tab
end
end
end
table.insert(tab, line)
return tab
end
generate_texture = function(lines)
local texture = "[combine:"..LCD_WITH.."x"..LCD_WITH
local ypos = 16
for i = 1, #lines do
texture = texture..generate_line(lines[i], ypos)
ypos = ypos + LINE_HEIGHT
end
return texture
end
generate_line = function(s, ypos)
local i = 1
local parsed = {}
local width = 0
local chars = 0
while chars < max_chars 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
print("[digilines_lcd] W: unknown symbol in '"..s.."' at "..i)
i = i + 1
end
if file ~= nil then
width = width + CHAR_WIDTH
table.insert(parsed, file)
chars = chars + 1
end
end
width = width - 1
local texture = ""
local xpos = math.floor((LCD_WITH - 2 * LCD_PADDING - width) / 2 + LCD_PADDING)
for i = 1, #parsed do
texture = texture..":"..xpos..","..ypos.."="..parsed[i]..".png"
xpos = xpos + CHAR_WIDTH + 1
end
return texture
end
minetest.register_craft({
output = "digilines_lcd:lcd 2",
recipe = {
{"default:steel_ingot", "digilines:wire_std_00000000", "default:steel_ingot"},
{"mesecons_lightstone:lightstone_green_off","mesecons_lightstone:lightstone_green_off","mesecons_lightstone:lightstone_green_off"},
{"default:glass","default:glass","default:glass"}
}
})
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