New 1.5 feature: Custom minecart blocks

Some of you may remember, but 1.5 adds the functionality of setting the blocks of minecarts. Bukkit has not yet added support, but they probably will. In the meantime, you can use the following (NMS) code to do it:

PHP:

    /**
    * Gets the block type for this Minecart
    *
    * @return block type
    */
    public Material getBlockType() {
        return Material.getMaterial(getBlockId());
    }
 
    /**
    * Gets the block type id for this Minecart
    *
    * @return block type id
    */
    public int getBlockId() {
        return getHandle(EntityMinecartAbstract.class).getDataWatcher().getInt(20) & '\uffff';
    }
 
    /**
    * Gets the block data for this Minecart
    *
    * @return block data
    */
    public int getBlockData() {
        return getHandle(EntityMinecartAbstract.class).o();
    }
 
    /**
    * Sets the Block displayed in this Minecart
    *
    * @param blockType of the Block
    */
    public void setBlock(Material blockType) {
        setBlock(blockType, 0);
    }
 
    /**
    * Sets the Block displayed in this Minecart
    *
    * @param blockId of the Block
    */
    public void setBlock(int blockId) {
        setBlock(blockId, 0);
    }
 
    /**
    * Sets the Block displayed in this Minecart
    *
    * @param blockType of the Block
    * @param blockData of the Block
    */
    public void setBlock(Material blockType, int blockData) {
        setBlock(blockType == null ? 0 : blockType.getId(), blockData);
    }
 
    /**
    * Sets the Block displayed in this Minecart
    *
    * @param blockId of the Block
    * @param blockData of the Block
    */
    public void setBlock(int blockId, int blockData) {
        EntityMinecartAbstract handle = getHandle(EntityMinecartAbstract.class);
        handle.k(blockId);
        handle.l(blockData);
    }


This is the same code I use in BKCommonLib, where a lot of other functionality is as well. I just recently found out that the '20' datawatcher value was added, so why not add support?

 

bergerkiller
Very cool I will be sure to test this out later!

 

MCForger

This looks awesome, I didn't even know they added this. The time for mobile pig spawners is near...

 

bergerkiller What's the "getHandle()" method from? Does that class extend any other, or is it a method that you created, but is not in your code?

 

chasechocolate
Well it being BKCommonLib, getHandle refers to the 'CraftEntity.getHandle()' method, cast to a type. Equivalent call:

Code:

Minecart entity = ???;
EntityMinecartAbstract handle = (EntityMinecartAbstract) ((CraftEntity) entity).getHandle();
handle.etc

 

Wait, are you saying this allows any block to be inside a minecart? :O

 

CreeperShift
Yup.

 

Pure awesomeness! 1.5 added so many small things that aren't public knowledge :3

 

Watch Sethbling, he normally reveals these kind of features.

 

I do occasionally But hes too busy stacking entities to make rocketships ;DD

 

I fully implemented this feature in TrainCarts now, liking it thus far. For those that don't know what this is about:

 

When you break said minecart, would the block in it drop as well?

 

turt2live
Not entirely sure, I do suspect that it will drop both a regular Minecart and the Block type. There is no combined item for all blocks though, so it is not possible to place these minecarts with special blocks on-the-fly.

 

--- solved ---