Hi,

 

How would I go about changing a block's texture on right-click by holding something or not holding anything at all in Forge 1.7.2? I can't seem to find another forum thread about this anywhere.

 

Thanks in advance,

Noodly_Doodly

I'm pretty sure Vswe (author of Steve's Carts) has a tutorial explaining what you're looking for, he did a sort of modding course a while back and I remember watching it. https://www.youtube.com/user/VsweGoesMinecraft/videos they're really useful tutorials as well.

override "onBlockActivated"

params in it are :World world, int x, int y, int z, EntityPlayer player, int side, float hitX, float hitY, float hitZ

 

then inside you can check for the player.getHeldItem() and set the blocks metaData

 

if(!world.isRemote) 
{
   if (player.getHeldItem().getItem().equals(Items.apple))
   world.setBlockMetadataWithNotify(x, y, z, metaData, 2);
}
return true;

 

metaData will be 0-15 (16 spots? from what I remember people saying) and all you have to do is register your icons and display the correct one through the GetIcon method.

 

Sorry for being away for 3 days, but now I have another question. I used the above code, but now I need it to be so that I can switch the block from metadata 0 to metadata 1 and back again an unlimited number of times. No matter where I place my "while (true) {" or "do {" 's, I still can only change the metadata once. How could I do this?

Do you need to change metadata more than once after every click?

 

While(true) is a terrible idea, as the game will freeze since it will stop 'ticking'.

 

If you want to toggle it every time it's clicked then you can do something like

world.setBlockMetadataWithNotify(x, y, z, metadata == 0 ? 1 : 0, FLAG)

If you want to change independently every tick from the moment it was clicked, however, I suggest a TileEntity.

 

If you want it to change independently every so often from the moment it was clicked you could probably get away with setTickRandomly and using the method that gets called then (onUpdate or onUpdateTick or something)

I only need the meta to change once when I right click on the block, but I need to be able to right click on the block more than once. With the previous code, once you right-clicked on the block it would be stuck in meta 0.

use shieldBugs's toggle code that he posted.

I've tried using sheildBug's code, but I still can only switch the meta once. Would this have something to to with FLAG?

world.setBlockMetadataWithNotify(x, y, z, metadata == 0 ? 1 : 0, FLAG)

 

EDIT: As in what should I replace flag with?

Read the JavaDoc comments.

 

/**

  * Sets the blocks metadata and if set will then notify blocks that this block changed, depending on the flag. Args:

  * x, y, z, metadata, flag. See setBlock for flag description

  */

 

/**

  * Sets the block ID and metadata at a given location. Args: X, Y, Z, new block ID, new metadata, flags. 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.

  */

 

You're probably gonna use 3 (flag 2 + flag 1).

 

Also remember to use world.getBlockMetadata(x, y, z) in place of metadata, you can't use an instance variable as there is only 1 instance of a block ever.