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local sdl = require("SDL")
sdl.init({sdl.flags.video})
local windows = {}
local renderers = {}
local function drawrect(renderer,x,y,color,scale)
x = x - 1
y = y - 1
local rect = {x=x*scale,y=y*scale,w=scale,h=scale}
if string.sub(color,1,1) == "#" then color = string.sub(color,2,-1) end
renderer:setDrawColor(tonumber(color,16))
renderer:fillRect(rect)
end
minetest.register_node("sdl_display:display",{
description = "SDL Display",
groups = {dig_immediate=2},
tiles = {"sdl_display_sides.png"},
digiline =
{
receptor = {},
effector = {
action = function(pos,node,channel,msg)
local meta = minetest.get_meta(pos)
if (not msg) or channel ~= meta:get_string("channel") then
return
end
local w = meta:get_int("width")
local h = meta:get_int("height")
local scale = meta:get_int("scale")
local hash = minetest.hash_node_position(pos)
if not windows[hash] then
windows[hash] = sdl.createWindow({
title = meta:get_string("windowtitle"),
width = w*scale,
height = h*scale,
})
renderers[hash] = sdl.createRenderer(windows[hash],0,0)
end
renderers[hash]:clear()
for y=1,h,1 do
if type(msg[y]) == "table" then
for x=1,w,1 do
if type(msg[y][x]) =="string" and string.len(msg[y][x]) >= 6 then
drawrect(renderers[hash],x,y,msg[y][x],scale)
end
end
end
end
renderers[hash]:present()
end,
},
},
on_destruct = function(pos)
local hash = minetest.hash_node_position(pos)
if windows[hash] then windows[hash]:hide() end
windows[hash] = nil
renderers[hash] = nil
end,
after_place_node = function(pos)
local meta = minetest.get_meta(pos)
meta:set_string("channel","display")
meta:set_int("width",10)
meta:set_int("height",10)
meta:set_string("windowtitle","Display")
meta:set_int("scale",40)
local fs = "size[3,6.5]"
fs = fs.."field[0,0.5;3,1;channel;Channel;${channel}]"
fs = fs.."field[0,1.5;3,1;title;Window Title;${windowtitle}]"
fs = fs.."field[0,2.5;3,1;width;Width;${width}]"
fs = fs.."field[0,3.5;3,1;height;Height;${height}]"
fs = fs.."field[0,4.5;3,1;scale;Scale;${scale}]"
fs = fs.."button[0,5.5;3,1;save;Save]"
meta:set_string("formspec",fs)
meta:set_string("infotext","SDL Display (\"Display\")")
end,
on_receive_fields = function(pos,_,fields)
if not fields.save then return end
local meta = minetest.get_meta(pos)
meta:set_string("channel",fields.channel)
meta:set_string("windowtitle",fields.title)
meta:set_int("width",fields.width)
meta:set_int("height",fields.height)
meta:set_int("scale",fields.scale)
meta:set_string("infotext",string.format("SDL Display (\"%s\")",fields.title))
local hash = minetest.hash_node_position(pos)
if windows[hash] then windows[hash]:hide() end
windows[hash] = nil
renderers[hash] = nil
end,
})
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