I'm having a strange problem... When someone right clicks my custom block, I set it's metadata to 1 with:

 

world.setBlockMetadataWithNotify(x, y, z, 1, 2)

 

Where x, y, z, and world are the values passed in onBlockActivated. I have a check in that method so I can make sure the set metadata method returns true, and it does.

 

The problem is, when I close Minecraft and come back, the metadata has reset itself to 0.

 

This is how I am checking the metadata (onChunkLoad):

 

	@ForgeSubscribe
public void onChunkLoad(ChunkDataEvent.Load e){
	for(ExtendedBlockStorage storage:e.getChunk().getBlockStorageArray())
		if(storage != null && !storage.isEmpty())
			for(int x = 0; x < 16; x++)
				for(int z = 0; z < 16; z++)
					for(int y = 0; y < 16; y++)
						if(storage.getExtBlockID(x, y, z) == FirstMod.instance.fishDirt.blockID){
							System.out.println(storage.getExtBlockMetadata(x, y, z));
							System.out.println(((e.getChunk().xPosition << 4) + x) +":"+ (storage.getYLocation()+y) +":"+ ((e.getChunk().zPosition << 4) + z));
						}

}

 

The prints are from me testing if the coordinates matched up to when I set the metadata(they do). The fist print prints 0. I can not figure out why.

 

I'm a fairly adept java programmer (about a year's experience) but I just started this whole forge modding thing, so if I made a stupid mistake somewhere, please correct me (nicely ). And, before you ask, yes I did a Google search and a search on here.

client-server disparity.

 

Minecraft.getMinecraft().theWorld returns the client's world, so you're only changing the block on the client side, and when the chunk gets an update packet from the server, the block will reset.

That's an interesting concept, but not the problem. I changed the code so it uses the world passed in onBlockActivated and get the same result.

Do a quick "if(!world.isRemote){}" around your code and see if that changes anything.

Which code? The chunk load or the block activate? And why would that fix it? It would just make the code not activate if I'm not mistaken.

Around the part where you're changing the block metadata?

Well, that didn't fix anything but the world.isRemote is true.

	@Override
    public boolean onBlockActivated(World world, int x, int y, int z, EntityPlayer player, int par6, float par7, float par8, float par9) {
	if(world.isRemote){
		return true;
	}
	Location location = new Location(x, y, z);
    	if(!FirstMod.instance.fishDirts.remove(location)){
    			FirstMod.instance.fishDirts.add(location);
    			if(world.setBlockMetadataWithNotify(x, y, z, 1, 2))
    				System.out.println("set to 1");
    			Minecraft.getMinecraft().theWorld.addWeatherEffect(new EntityLightningBolt(Minecraft.getMinecraft().theWorld, x, y, z));
    	}else{
    		if(Minecraft.getMinecraft().theWorld.setBlockMetadataWithNotify(x, y, z, 0, 2))
    			System.out.println("set to 0");
    	}
	return true;
}

 

That's my onBlockActivated method. The metadata is now somehow permanently set to 1. The "set to 1" print never happens, but the "set to 0" print happens when I deactivate it, as expected. 

 

The Location class is made by me for storing x-y-z triplets, if you were wondering (I'm a Bukkit programmer at heart  ).

Not sure what's going on; I'm a little worn out after a long day.

 

The Location class is made by me for storing x-y-z triplets, if you were wondering (I'm a Bukkit programmer at heart  ).

 

Look up Vec3.  You reimplemented it with a new name.

Thanks for all your help today Maybe you'll be inspired overnight.

 

I realize that I recreated Vec3, but I prefer the way I made it. It stores ints, not doubles, and doesn't require a static constructor method. I think it comes from the Bukkit programmer in me 

The metadata is still stuck at 1... I've stared at this for hours now. Does anyway have any ideas?

Location location = new Location(x, y, z);
    	if(!FirstMod.instance.fishDirts.remove(location)){

Well, you're making a new Location object which you're trying to remove from a list? In that case, you'll always fail to remove it, as the reference of the new object never can be the same as one of the objects in the list. Unless you've correctly overriden the equals() method in your Location class?

 

Also this will not work on the server side, as mentioned before by Draco18s:

Minecraft.getMinecraft().theWorld.addWeatherEffect(new EntityLightningBolt(Minecraft.getMinecraft().theWorld, x, y, z));

Thanks for the reply.

 

I have extended HashSet as a LocationSet, so yes, it's correctly overridden.

 

This still doesn't fix my problem. I do think it has something to do with the client-server thing but I don't know what. I'll post more of my code when I get home.

Here's my base class:

@Mod(modid="FirstMod", name="First Mod", version="1.0")
@NetworkMod(clientSideRequired=true)
public class FirstMod{

public final ItemStack fishRod = new ItemStack(new FishRod(900));
public final Block fishDirt = new FishDirt(901);

@Instance(value = "FirstMod")
public static FirstMod instance;

public Set<Location> fishDirts = new LocationSet();

@cpw.mods.fml.common.Mod.EventHandler
public void preInit(FMLPreInitializationEvent e){

}

@cpw.mods.fml.common.Mod.EventHandler
public void load(FMLInitializationEvent e){
	TickRegistry.registerTickHandler(new PlayerTickListener(), Side.CLIENT);
	TickRegistry.registerTickHandler(new WorldTickListener(), Side.CLIENT);
	MinecraftForge.EVENT_BUS.register(new EventHandler());
	GameRegistry.registerBlock(this.fishDirt, "FishDirt");
	GameRegistry.registerItem(this.fishRod.getItem(), "FishRod");
	LanguageRegistry.addName(this.fishRod, "Great Rod of the Fish God");
	LanguageRegistry.addName(this.fishDirt, "Great Dirt of the Fish God");
	GameRegistry.addRecipe(this.fishRod, "  x", " y ", 'x', new ItemStack(Item.fishRaw), 'y', new ItemStack(Item.stick));
	GameRegistry.addRecipe(new ItemStack(this.fishDirt), "xxx", "xyx", "xxx", 'x', new ItemStack(Item.fishRaw), 'y', new ItemStack(Block.dirt));
}

@cpw.mods.fml.common.Mod.EventHandler
public void postInit(FMLPostInitializationEvent e){
}


}

If you require anything else, just ask. I don't think the Tick or Event handlers are necessary as they don't touch anything with blocks or metadata (except the chunk load one).

Never mind, I solved it. It was due to the client-server thing. I forgot to change the method call that sets the metadata to 0 to use the world passed in onBlockActivated... Thanks for the help guys!