Add LCD Display: Just send a string to it and it will display it
Credits go to thexyz for his sign mod, this is a strongly modified version of it.
This commit is contained in:
Jeija
234
digilines_lcd/init.lua
Normal file
234
digilines_lcd/init.lua
Normal file
@@ -0,0 +1,234 @@
|
||||
--* 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.env:get_meta(pos):set_string("formspec", "field[channel;Channel;${channel}]")
|
||||
end
|
||||
|
||||
local clearscreen = function(pos)
|
||||
local objects = minetest.env:get_objects_inside_radius(pos, 0.5)
|
||||
for _, o in ipairs(objects) do
|
||||
if o:get_entity_name() == "digilines_lcd:text" then
|
||||
o:remove()
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
local prepare_writing = function (pos)
|
||||
lcd_info = lcds[minetest.env:get_node(pos).param2]
|
||||
if lcd_info == nil then return end
|
||||
local text = minetest.env: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)
|
||||
clearscreen(pos)
|
||||
local setchan = minetest.env:get_meta(pos):get_string("channel")
|
||||
if setchan ~= channel then return end
|
||||
|
||||
local text = prepare_writing (pos)
|
||||
text:set_properties({textures={generate_texture(create_lines(msg))}})
|
||||
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.env:get_node(pos).param2
|
||||
if param2 == 0 or param2 == 1 then
|
||||
minetest.env: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)
|
||||
minetest.env:get_meta(pos):set_string("channel", fields.channel)
|
||||
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.env: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
|
||||
|
||||
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
|
||||
|
||||
string_to_word_array = function(str)
|
||||
local tab = {}
|
||||
local current = 1
|
||||
tab[1] = ""
|
||||
for _,char in ipairs(string_to_array(str)) do
|
||||
if char ~= " " then
|
||||
tab[current] = tab[current]..char
|
||||
else
|
||||
current = current+1
|
||||
tab[current] = ""
|
||||
end
|
||||
end
|
||||
return tab
|
||||
end
|
||||
|
||||
create_lines = function(text)
|
||||
local line = ""
|
||||
local line_num = 1
|
||||
local tab = {}
|
||||
for _,word in ipairs(string_to_word_array(text)) 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
|
||||
Reference in New Issue
Block a user