From ad13a1e334d644b7b889b41effe5ca38bbd847ec Mon Sep 17 00:00:00 2001
From: cheapie <no-email-for-you@example.com>
Date: Sat, 18 Feb 2017 00:15:04 -0600
Subject: Add content

---
 init.lua | 91 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 init.lua

(limited to 'init.lua')

diff --git a/init.lua b/init.lua
new file mode 100644
index 0000000..338800f
--- /dev/null
+++ b/init.lua
@@ -0,0 +1,91 @@
+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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