How would I automatically join a server after I get kicked from one?

So. You want to automatically send commands to a Server in a predefined Intervall and reconnect when disconnecting.. I am not sure if I want to know where this is heading.

This is not spam or anything bad, the server reboots at a time, and I want to be on it when after it starts up again, and the command sending is not irrelevant to this at all

a) That's a dick move.

b) ClientDisconnectionFromServerEvent and check out GuiMultiplayer to see how to initialize a connection to a server.

Anyway on knowing if the connection succeeded?

This is typical "try over and over again util you succed" case.

 

1. Setup ClientTickEvent and ClientDisconnectionFromServerEvent.

2. Create some static boolean "shouldAutoReconnect".

3. When you get DC, in your ClientDisconnectionFromServerEvent you can set boolean to true.

4. Use ClientTickEvent to check that boolean, then check current screen (instanceof GuiSomething).

5. Make whatever if statements you need and create some incrementation - make client try to reconnect every e.g 2sec (if conditions are met and you are not ingame) or whatever.

6. Done.

 

If you would need to directly know the moment when client faild to connect you can check if current screen displays error msg. Again - you need to do that per-tick with ClientTickEvent.

 

At least that''s what I'd do.

FMLClientHandler.instance().connectToServer(FMLClientHandler.instance().getClient().currentScreen, new ServerData(null, Main.getConfigData().getIP() + ":" + Main.getConfigData().getPort()));

 

^ I am getting a null point exception while running this

Just look at callbacks

 

In GuiMultiplayer:

private void connectToServer(ServerData server)
    {
        net.minecraftforge.fml.client.FMLClientHandler.instance().connectToServer(this, server);
    }

 

You could assume that you need GuiMultiplayer.

Just look at callbacks

 

In GuiMultiplayer:

private void connectToServer(ServerData server)
    {
        net.minecraftforge.fml.client.FMLClientHandler.instance().connectToServer(this, server);
    }

You could assume that you need GuiMultiplayer.

I keep getting a null pointer

 

java.lang.NullPointerException

at net.minecraft.client.Minecraft.runTick(Minecraft.java:1994) ~[Minecraft.class:?]

at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1028) ~[Minecraft.class:?]

at net.minecraft.client.Minecraft.run(Minecraft.java:951) [Minecraft.class:?]

at net.minecraft.client.main.Main.main(Main.java:164) [Main.class:?]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_71]

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_71]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_71]

at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_71]

at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?]

at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]

at net.minecraftforge.gradle.GradleStartCommon.launch(Unknown Source) [start/:?]

at GradleStart.main(Unknown Source) [start/:?]

[02:51:33] [Client thread/INFO] [sTDOUT]: [net.minecraft.client.Minecraft:displayCrashReport:388]: ---- Minecraft Crash Report ----

// Ouch. That hurt

 

Time: 07/07/15 02:51

Description: Unexpected error

 

java.lang.NullPointerException: Unexpected error

at net.minecraft.client.Minecraft.runTick(Minecraft.java:1994)

at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1028)

at net.minecraft.client.Minecraft.run(Minecraft.java:951)

at net.minecraft.client.main.Main.main(Main.java:164)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

at net.minecraftforge.gradle.GradleStartCommon.launch(Unknown Source)

at GradleStart.main(Unknown Source)

*Ernio focuses on blank page with white-colored letters that supposed to be OP's code*

 

We are not wizards - post your code.

*Ernio focuses on blank page with white-colored letters that supposed to be OP's code*

 

We are not wizards - post your code.

				FMLClientHandler.instance().setupServerList();//might be unnecessary
			FMLClientHandler.instance().connectToServer(new GuiMultiplayer(FMLClientHandler.instance().getClient().currentScreen), new ServerData("", Main.getConfigData().getIP() + ":" + Main.getConfigData().getPort()));

Try using

FMLClientHandler#connectToServerAtStartup(hostAddress, port)

 

What it does is basically setupServerList and connectToServer, but also first pings the server for availability.

I keep getting a nullpointer D:

 

java.lang.NullPointerException
at net.minecraft.client.Minecraft.runTick(Minecraft.java:1994) ~[Minecraft.class:?]
at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1028) ~[Minecraft.class:?]
at net.minecraft.client.Minecraft.run(Minecraft.java:951) [Minecraft.class:?]
at net.minecraft.client.main.Main.main(Main.java:164) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_71]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_71]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_71]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_71]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]
at net.minecraftforge.gradle.GradleStartCommon.launch(Unknown Source) [start/:?]
at GradleStart.main(Unknown Source) [start/:?]

My code

FMLClientHandler.instance().connectToServerAtStartup(Main.getConfigData().getIP(), Integer.parseInt(Main.getConfigData().getPort()));

a) That's a dick move.

b) ClientDisconnectionFromServerEvent and check out GuiMultiplayer to see how to initialize a connection to a server.

you know what am I doing wrong?

Look at the line that the crash points to and figure out what is null there and what you are doing that is causing that.

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

^I think the nullpointer is caused because there is no arguments on line 28 at net.minecraft.launchwrapper.Launch.main?

*Ernio focuses on blank page with white-colored letters that supposed to be OP's code*

 

We are not wizards - post your code.

spoonfeed me abit?

bump

bump...

- Less bumping, more figuring it out yourself.

- There will be no spoonfeeding.

- net.minecraft.client.Minecraft.runTick(Minecraft.java:1994) <- THIS is where the crash occurs. Look at that line.

it it to do with me creating the connection on a keybind?

I will not write any more responses until you follow what I told you:

Look at the line that the crash points to and figure out what is null there and what you are doing that is causing that.

 

At least tell us what is null on that line so we can do your work for you.

EntityPlayer.itemInUse (ItemStack)

Look at the line that the crash points to and figure out what is null there and what you are doing that is causing that.

I don't see the link between itemuse, and what I am doing.

Use a debugger.

instead of a nullpointer, now I am getting a runtime error

[15:52:20] [Timer-0/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: java.lang.RuntimeException: No OpenGL context found in the current thread.
Exception in thread "Timer-0" [15:52:20] [Timer-0/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at org.lwjgl.opengl.GLContext.getCapabilities(GLContext.java:124)
[15:52:20] [Timer-0/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at net.minecraft.client.gui.GuiMainMenu.<init>(GuiMainMenu.java:125)
[15:52:20] [Timer-0/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at cpw.mods.fml.client.FMLClientHandler.connectToServerAtStartup(FMLClientHandler.java:806)
[15:52:20] [Timer-0/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at net.RPD.BlazeBot.Bot$3.run(Bot.java:67)
[15:52:20] [Timer-0/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at java.util.TimerThread.mainLoop(Unknown Source)
[15:52:20] [Timer-0/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: 	at java.util.TimerThread.run(Unknown Source)

and my event

	@SubscribeEvent
public void onDisconnect(ClientDisconnectionFromServerEvent e) {
	Timer t = new Timer();
	t.schedule(new TimerTask() {
		@Override
		public void run() {
			FMLClientHandler.instance().connectToServerAtStartup("192.168.1.8", 69);
		}
	}, 5000);
}

The message tells you exactly what is wrong: you must interact with the game on the main thread. Timer obviously uses a 2nd thread.

k, I thought the game was multi threaded xdd, going to make new timers now on the same thread

This is typical "try over and over again util you succed" case.

 

1. Setup ClientTickEvent and ClientDisconnectionFromServerEvent.

2. Create some static boolean "shouldAutoReconnect".

3. When you get DC, in your ClientDisconnectionFromServerEvent you can set boolean to true.

4. Use ClientTickEvent to check that boolean, then check current screen (instanceof GuiSomething).

5. Make whatever if statements you need and create some incrementation - make client try to reconnect every e.g 2sec (if conditions are met and you are not ingame) or whatever.

6. Done.

 

If you would need to directly know the moment when client faild to connect you can check if current screen displays error msg. Again - you need to do that per-tick with ClientTickEvent.

 

At least that''s what I'd do.

Whats the name of the GUI screen of the actual game ingame?

The message tells you exactly what is wrong: you must interact with the game on the main thread. Timer obviously uses a 2nd thread.

Thank you all for helping me out!