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[Solved] [1.13.2] Schedule Code to be Ran Later


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Posted (edited)

In my TileEntity#read, I am trying to do the following:

@Override
public void read(NBTTagCompound nbt) {
	super.read(nbt);
	
	/*... getting fields from nbt*/
	
	if (this.world.isRemote()) this.updateModel(); // Used by tesr. Must be called after getting fields from nbt is done.
	this.power = this.world.getRedstonePowerFromNeighbors(this.pos);
}

 

As shown in the code, the last two lines all require access to World; however, when TileEntity#read is called as the world initializes, TileEntity#world is null, and therefore the last two lines will encounter a NullPointerException.

My idea is that I can somehow schedule the lines that refers to TileEntity#world to be ran later when the world finishes loading. How would I achieve that?

Edited by DavidM

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Posted

Is your TE ITickable? If is is then you can simply do these things on the first tick(have a boolean or something). 

Otherwise you might be able to do it in TileEntity#setWorld, as far as I can tell it is called after the NBT was loaded. Just make sure you are on the server.

  • Like 1
Posted (edited)

Thanks.

Edited by DavidM

Some tips:

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Modder Support:

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1. Do not follow tutorials on YouTube, especially TechnoVision (previously called Loremaster) and HarryTalks, due to their promotion of bad practice and usage of outdated code.

2. Always post your code.

3. Never copy and paste code. You won't learn anything from doing that.

4. 

Quote

Programming via Eclipse's hotfixes will get you nowhere

5. Learn to use your IDE, especially the debugger.

6.

Quote

The "picture that's worth 1000 words" only works if there's an obvious problem or a freehand red circle around it.

Support & Bug Reports:

Spoiler

1. Read the EAQ before asking for help. Remember to provide the appropriate log(s).

2. Versions below 1.11 are no longer supported due to their age. Update to a modern version of Minecraft to receive support.

 

 

Posted

TileEntity#onLoad is the same as checking if the tick is the tiles first tick, but indicates your intention better

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