Update tron

tron

@@ -1,4 +1,8 @@
 local scr_x, scr_y = term.getSize()
+local modemID = 712
+local gamename = ""
+
+waitingForGame = true
 
 local grid = {
 	x1 = -80,
@@ -361,6 +365,7 @@ local evt
 local keysDown = {}
 
 local getInput = function()
+	os.pullEvent("new_game")
 	while true do
 		evt = {os.pullEvent()}
 		if lockInput then
@@ -459,6 +464,7 @@ end
 local game = function()
 	local p = player[you]
 	local outcome
+	os.pullEvent("new_game")
 	while true do
 		p.putTrail = not keysDown[control.release]
 		if keysDown[control.left] and p.direction ~= 0 then
@@ -488,6 +494,7 @@ local game = function()
 		scrollAdjY = scrollAdjY * 0.8
 		
 		outcome = moveTick()
+		sendInfo(gameID)
 		
 		if outcome == "end" then
 			return
@@ -502,6 +509,38 @@ local game = function()
 end
 
 local decision
+local modem = peripheral.find("modem")
+if modem then
+	modem.open(modemID)
+else
+	error("You need a modem.")
+end
+
+local sendInfo = function(gameID)
+	modem.transmit(modemID, modemID, {
+		player = player,
+		gameID = gameID
+	})
+end
+
+local networking = function()
+	local evt, side, channel, repchannel, msg, distance
+	while true do
+		evt, side, channel, repchannel, msg, distance = os.pullEvent("modem_message")
+		if channel == modemID and repchannel == modemID and type(msg) == "table" then
+			if type(msg.player) == "table" and type(msg.gameID) == "string" then
+				if waitingForGame and (type(msg.new) == "number") then
+					if msg.new < os.time() then
+						you, nou = you, nou
+						gamename = msg.gameID
+					end
+					waitingForGame = false
+					os.queueEvent("new_game", gameID)
+				end
+			end
+		end
+	end
+end
 
 while true do
 	decision = titleScreen()
@@ -509,7 +548,16 @@ while true do
 	if decision == "start" then
 		trail = {}
 		resetPlayers()
-		parallel.waitForAny(getInput, game)
+		gamename = ""
+		for i = 1, 32 do
+			gamename = gamename .. string.char(math.random(1,126))
+		end
+		modem.transmit(modemID, modemID, {
+			player = player,
+			gameID = gamename,
+			new = os.time()
+		})
+		parallel.waitForAny(getInput, game, networking)
 	elseif decision == "demo" then
 		parallel.waitForAny(getInput, gridDemo)
 	elseif decision == "exit" then