I know that pre 1.9 you just did worldObj.markBlockForupdate but i just can't find the 1.9 alternative.

Thanks in advance, Laseph.

Use

World#notifyBlockUpdate

. You can see an example of this here.

Sorry to invade but there is something I never understood:

 

Use

World#notifyBlockUpdate

. You can see an example of this here.

 

getWorld().notifyBlockUpdate(getPos(), state, state, [u]3[/u]);

 

3. Where does this come from? I had no idea what to put there when I was needing to sync data, so I put Integer.MAX_VALUE.

getWorld().notifyBlockUpdate(getPos(), state, state, [u]3[/u]);

 

3. Where does this come from? I had no idea what to put there when I was needing to sync data, so I put Integer.MAX_VALUE.

 

Vanilla mostly uses 3 but it looks like the only place the argument is actually used is in

RenderGlobal#notifyBlockUpdate

, which only checks if

(flags &  != 0

. This is

false

for 3, but

true

for

Integer.MAX_VALUE

.

 

I don't fully understand the rendering code, but it looks like this value controls whether the

RenderChunk

updates now (

true

) or later (

false

).

From

World#getBlockState

:

/**
* Sets the block state at a given location. Flag 1 will cause a block update. Flag 2 will send the change to
* clients (you almost always want this). Flag 4 prevents the block from being re-rendered, if this is a client
* world. Flags can be added together.
*/

 

3 means it uses flags 1 and 2, so using flag 3 will cause a block update and send the changes to the client.

Those are the flags for

World#setBlockState

. Vanilla seems to use the same values for

World#notifyBlockUpdate

; but as I pointed out, only

RenderManager

(the client-side

IWorldEventListener

) checks if flag 8 is set.

PathWorldListener

(the common

IWorldEventListener

) and

WorldManager

(the server-side

IWorldEventListener

) ignore the flags completely.

You're right, totally missed that. Would that be the only place flag 8 is ever checked? I haven't seen it been used anywhere else.

 

As for the flags I posted,

World#getBlockState

it's the only place in

World

with flag descriptions.

You're right, totally missed that. Would that be the only place flag 8 is ever checked? I haven't seen it been used anywhere else.

 

That is the only place flag 8 is checked, yes.

World#markAndNotifyBlock

is the only other place that checks flags and it only checks flags 1, 2 and 4.