Greetings, I would appreciate if someone helped me with this:

I want to store a boolean which is unique for each block, but when I use this

public boolean something = false; (in the block class)

and set it to true on some event like block placed, it changes to true for every block of the same type.

Is there a way I can store a variable that changes only in one block which caused the event and not all blocks?

 

There is always only one Block instance per client.

 

Think of Block.class as a "description" of given block, not a block itself.

A block in world has 4 bits of data. That gives you 16 possible values, called metadata, which you can set per-block.

If you need more you will need to use TileEntity.

 

So if you need one boolean, it will be meta=0 for false, meta=1 for true.

Google on how to use metadata, hella lot of it.

 

Also: 1.6.4 is ancient and we don't and can't really support you without you giving any code, so you'll have to figure it on your own.