如何在Minecraft 1.12.2中设置定向块？

Question

下面是我已经拥有的代码：

public class DirBlock extends BlockHorizontal implements IHasModel {

public DirBlock(String name) {
    super(Material.CLOTH);
    setSoundType(SoundType.CLOTH);
    setCreativeTab(Main.RM_TAB1);
    setUnlocalizedName(name);
    setRegistryName(name);
    setDefaultState(this.blockState.getBaseState().withProperty(FACING, EnumFacing.NORTH));

    ModBlocks.BLOCKS.add(this);
    ModItems.ITEMS.add(new ItemBlock(this).setRegistryName(this.getRegistryName()));
}

public static final PropertyDirection FACING = PropertyDirection.create("facing", EnumFacing.Plane.HORIZONTAL);

@Override
protected BlockStateContainer createBlockState() {
    return new BlockStateContainer(this, new IProperty[] { FACING });
}

@Override
public IBlockState getStateFromMeta(int meta) {
    return getDefaultState().withProperty(FACING, meta == 0 ? EnumFacing.WEST : EnumFacing.EAST);
}

@Override
public int getMetaFromState(IBlockState state) {
    EnumFacing facing = (EnumFacing) state.getValue(FACING);
    return facing.getHorizontalIndex();
}

@Override
public IBlockState getStateForPlacement(World world, BlockPos pos, EnumFacing facing, float hitX, float hitY,
    float hitZ, int meta, EntityLivingBase placer, EnumHand hand) {
return super.getStateForPlacement(world, pos, facing, hitX, hitY, hitZ, meta, placer, hand).withProperty(FACING, placer.getHorizontalFacing());
}

@Override
public void registerModels() {
    Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 0, "inventory");
}
}

Answer 1

@Override
public IBlockState getStateFromMeta(int meta) {
    return getDefaultState().withProperty(FACING, meta == 0 ? EnumFacing.WEST : EnumFacing.EAST);
}

@Override
public int getMetaFromState(IBlockState state) {
    EnumFacing facing = (EnumFacing) state.getValue(FACING);
    return facing.getHorizontalIndex();
}

您正在使用Face索引对元数据进行编码，但当您返回时，您要确定元数据是否正好为0，如果是，则Face是WEST（所有其他值都意味着EAST）。

不幸的是，韦斯特不是0。这来自getHorizontalIndex()的代码内Javadoc：

/**
 * Get the index of this horizontal facing (0-3). The order is S-W-N-E
 */

您应该使用以下内容：

//use existing getMetaFromState
@Override
public IBlockState getStateFromMeta(int meta)
{
    return this.getDefaultState().withProperty(FACING, EnumFacing.getHorizontal(meta));
}

//use existing getStateFromMeta
@Override
public int getMetaFromState(IBlockState state) {
    EnumFacing facing = (EnumFacing) state.getValue(FACING);
    return facing == EnumFacing.WEST?0:1;
}