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Posted (edited)

Hi there.

 

I've been trying to create a basic Gui for my Mod. The Gui has a background, a text input, buttons and has strings drawn on. My Gui displays and functions correctly but every now and then it will cause a fatal crash. The crash happens randomly. Sometimes when I try and display it, it will instantly crash. Other times I can open and close the screen multiple times with no issue.

 

The Gui is called by right clicking on a block using:

 

	Minecraft.getMinecraft().displayGuiScreen(new GuiAdditionBlock());

 

My Gui class can be found at : GuiMathsBlock

 

The Crash report for it can be seen at: Crash Report

 

I think the error is being created with drawing strings as fontRendererObj is being set to null somehow (You can see the print statements in the crash report).

 

To test this I created an even simpler GUI screen that had just a background and a button. This also crashes but threw a different error. Can anyone see what i'm doing wrong here?

Here is the other Gui made : The Even simpler Gui

Crash report from that one : crash report

 

I've attached images of the working Gui but the upload has failed. Please let me know if you have any suggestions or need more details.

 

Heres a quick video if my bug. (Video is a little laggy) : GUI Bug

 

Thanks.

Screen Shot 2017-04-17 at 10.27.04.png

Edited by Sparky3295
added video link
Posted (edited)

Hi, GUI is strictly client-sided.

 In your GUIMathsBlock.java your block activation method should check whether the its on the client side.

 

if (player.world.isRemote){
	Minecraft.getMinecraft().displayGuiScreen(new GuiAdditionBlock());
}

Should fix it.

world.isRemote refers to client side. If its false, its server side.

Edited by kirinnee97
Posted
1 minute ago, Sparky3295 said:

@kirinnee97 I do already do that if you look at my code.

You used (!player.world.isRemote) instead of (player.world.isRemote).

If you want it to work on dedicated server, replace the openGUI statement with one that sends a packet to client side. Then on the client packet handler, open the gui.

Posted (edited)
4 minutes ago, Sparky3295 said:

@diesieben07 All I want is the player to answer the question and if its right they are given an item as a reward. This is for a singleplayer mod.

Then using  (player.world.isRemote) instead of (!player.world.isRemote)  for your check would work.

6 minutes ago, diesieben07 said:

This is not needed. The GUI can be opened on the client directly through the client proxy if no inventory interaction is needed.

Oops looks like i was mistaken. So by registering the open gui statement under clientproxy that overrides commonproxy, then call the common proxy would work?

Edited by kirinnee97
Posted
3 minutes ago, diesieben07 said:

Only when the displayGuiScreen call is moved to the client proxy.

Sorry, but i just did a test

	@Override
		public boolean onBlockActivated(World worldIn, BlockPos pos, IBlockState state, EntityPlayer playerIn, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ){
			if(worldIn.isRemote){
				Minecraft.getMinecraft().displayGuiScreen(new HUDEditorGUI(playerIn));
			}
			return true;
		}

Works fine in single player, but as you predicted, fails in dedi servs, so since he is using for SP,  it assume it should work fine?

Posted

Try running your game in Eclipse as the dedicated server*, then run a client and connect to it (server IP: 127.0.0.1) and interacting with your block.

 

*Next to the green "run" button is a little down-pointing triangle. Click that and pick "Run Server" then again for "Run Client"

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

DO NOT PM ME WITH PROBLEMS. No help will be given.

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