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[1.8] Passing IBlockState info through IMessage


TKContinuum

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I'm trying to figure out if there's a way to convert an IBlockState into some form that can be passed through a Packet to the server. I'd like to be able to update a certain position on a map with a specific block (in a specific orientation) whenever this is called. The position was easy enough, but I can't seem to find any way to get the block with all its orientation data converted into something that can be passed...

 

public class SetBlock implements IMessage, IMessageHandler<SetBlock, IMessage>
{
    private int x;
    private int y;
    private int z;
    private IBlockState blockState;
  
    public SetBlock() {}
   
    public SetBlock(int x, int y, int z, IBlockState blockState)
    {
        this.x = x;
        this.y = y;
        this.z = z;
        this.blockState = blockState;
    }
   
    @Override   
    public void toBytes(ByteBuf buf)
    {
    	buf.writeInt(x);
    	buf.writeInt(y);
    	buf.writeInt(z);
    	//blockState stuff
    }
    
    @Override
    public void fromBytes(ByteBuf buf)
    {
    	this.x = buf.readInt();
    	this.y = buf.readInt();
    	this.z = buf.readInt();
    	//blockState stuff
    }
    
    @Override
    public IMessage onMessage(final SetBlock message, final MessageContext ctx) 
    {
    	World world = ctx.getServerHandler().playerEntity.worldObj;
    	world.setBlockState(new BlockPos(message.x,message.y,message.z),Blocks.dirt.getDefaultState());
    	return null;
    }
    
}

 

The Dirt Block created was just a way for me to tell if the position was being passed correctly, and it is.

Any help would be fantastic...this is that last thing I need to figure out.

 

Thanks

 

P.S. Yes, I know this probably isn't an ideal way to do this, but this mod is just for my personal use so there's no worrying about others potentially abusing the placement system.

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Minecraft does this using

Block.BLOCK_STATE_IDS

, which is the same map returned by

GameData.getBlockStateIDMap

.

 

I would recommend against implementing

IMessage

and

IMessageHandler

in the same class, since it's easy to get confused and use values from

this

instead of the

message

argument in

IMessageHandler#onMessage

. Either move the handler to a separate class or a static inner class.

 

It's not safe to interact with normal Minecraft classes directly in your

IMessageHandler

, since it's called from a separate thread to the main client/server thread. You need to schedule a task on the main thread using

IThreadListener#addScheduledTask

, this page explains how to do this.

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

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