techpack/smartline/display.lua

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--[[
SmartLine
=========
Copyright (C) 2018 Joachim Stolberg
LGPLv2.1+
See LICENSE.txt for more information
display.lua:
]]--
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lcdlib.register_display_entity("smartline:entity")
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local function display_update(pos, objref)
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local meta = minetest.get_meta(pos)
local text = meta:get_string("text") or ""
text = string.gsub(text, "|", " \n")
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local texture = lcdlib.make_multiline_texture(
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"default", text,
120, 120, 9, "top", "#000")
objref:set_properties({ textures = {texture},
visual_size = {x=0.94, y=0.94} })
end
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local function on_timer(pos)
local meta = minetest.get_meta(pos)
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lcdlib.update_entities(pos)
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return false
end
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local lcd_box = {
type = "wallmounted",
wall_top = {-8/16, 15/32, -8/16, 8/16, 8/16, 8/16}
}
minetest.register_node("smartline:display", {
description = "SmartLine Display",
inventory_image = 'smartline_display_inventory.png',
tiles = {"smartline_display.png"},
drawtype = "nodebox",
paramtype = "light",
sunlight_propagates = true,
paramtype2 = "wallmounted",
node_box = lcd_box,
selection_box = lcd_box,
light_source = 6,
display_entities = {
["smartline:entity"] = { depth = 0.42,
on_display_update = display_update},
},
after_place_node = function(pos, placer)
local number = tubelib.add_node(pos, "smartline:display")
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local meta = minetest.get_meta(pos)
meta:set_string("number", number)
meta:set_string("text", " \n \nMinetest\nSmartLine Tools\n \nDisplay\nNumber: "..number)
meta:set_int("startscreen", 1)
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lcdlib.update_entities(pos)
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end,
after_dig_node = function(pos)
tubelib.remove_node(pos)
end,
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on_timer = on_timer,
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on_place = lcdlib.on_place,
on_construct = lcdlib.on_construct,
on_destruct = lcdlib.on_destruct,
on_rotate = lcdlib.on_rotate,
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groups = {cracky=2, crumbly=2},
is_ground_content = false,
sounds = default.node_sound_glass_defaults(),
})
minetest.register_craft({
output = "smartline:display",
recipe = {
{"", "", ""},
{"default:glass", "dye:green", "tubelib:wlanchip"},
{"", "default:copper_ingot", ""},
},
})
local function add_line(meta, payload)
local text = meta:get_string("text")
local rows
if meta:get_int("startscreen") == 1 then
rows = {}
meta:set_int("startscreen", 0)
else
rows = string.split(text, "|")
end
if #rows > 8 then
table.remove(rows, 1)
end
table.insert(rows, payload)
text = table.concat(rows, "|")
meta:set_string("text", text)
end
local function write_row(meta, payload)
local text = meta:get_string("text")
if type(payload) == "table" then
local row = tonumber(payload.row) or 0
if row > 9 then row = 9 end
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local str = payload.str or "oops"
if row == 0 then
meta:set_string("infotext", str)
return
end
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local rows
if meta:get_int("startscreen") == 1 then
rows = {}
meta:set_int("startscreen", 0)
else
rows = string.split(text, "|")
end
if #rows < 9 then
for i = #rows, 9 do
table.insert(rows, " ")
end
end
rows[row] = str
text = table.concat(rows, "|")
meta:set_string("text", text)
end
end
tubelib.register_node("smartline:display", {}, {
on_recv_message = function(pos, topic, payload)
local node = minetest.get_node(pos)
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local timer = minetest.get_node_timer(pos)
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if topic == "text" then -- add one line and scroll if necessary
local meta = minetest.get_meta(pos)
add_line(meta, payload)
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if not timer:is_started() then
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timer:start(1)
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end
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elseif topic == "row" then -- overwrite the given row
local meta = minetest.get_meta(pos)
write_row(meta, payload)
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if not timer:is_started() then
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timer:start(1)
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end
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elseif topic == "clear" then -- clear the screen
local meta = minetest.get_meta(pos)
meta:set_string("text", "")
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if not timer:is_started() then
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timer:start(1)
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end
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end
end,
})