How to make a 3x3 tile entity?

[Jummit]

How would I go about making a 3x3 block that you can place and break like a normal one? I looked into tile entities and got one to work, but how can I make it occupy nine blocks? I also looked at how the bed does it, and it looks like what I need, but that are only two parts. Mine has way more.

[Draco18s]

20 minutes ago, Jummit said:

I also looked at how the bed does it, and it looks like what I need, but that are only two parts. Mine has way more.

Then you need way more.

There is no way around this, you MUST place a block in each of the 27 occupied places otherwise all kinds of things get screwed up, like players falling on it or mobs trying to pathfind over it.

[Jummit]

2 minutes ago, Draco18s said:

Then you need way more.

There is no way around this, you MUST place a block in each of the 27 occupied places otherwise all kinds of things get screwed up, like players falling on it or mobs trying to pathfind over it.

Could I make a block that if placed creates a 3x3 block around itself, and if broken deconstructs it again?

[Draco18s]

Sure can.

 

Of course, that central block is probably not the one that you want to initiate things, as the player can't place a block in mid-air. But you can treat it as the "central core" if you will, that if any block breaks, it knows where the core is, tells the core to break, and if the core breaks, it can tell every block around it to break.

[Jummit]

Should I use tile entities for that? Or are normal block sufficient, for the non-core blocks at least?

[Jummit]

That worked pretty good!

Here is a terrible choppy video of it working.

[Cadiboo]

Can you post your code for future people? This concept is often badly implemented