common/universalelectricity/prefab/block/BlockRotatable.java

package universalelectricity.prefab.block;

import net.minecraft.block.material.Material;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;
import net.minecraft.util.MathHelper;
import net.minecraft.world.World;
import net.minecraftforge.common.ForgeDirection;

/** A block that can rotate based on placed position and wrenching.
 *
 * @author Calclavia */
public abstract class BlockRotatable extends BlockTile implements IRotatableBlock
{
    public BlockRotatable(int id, Material material)
    {
        super(id, material);
    }

    @Override
    public void onBlockPlacedBy(World world, int x, int y, int z, EntityLivingBase entityLiving, ItemStack itemStack)
    {
        int angle = MathHelper.floor_double((entityLiving.rotationYaw * 4.0F / 360.0F) + 0.5D) & 3;
        int change = 3;

        switch (angle)
        {
            case 0:
                change = 2;
                break;

            case 1:
                change = 5;
                break;

            case 2:
                change = 3;
                break;

            case 3:
                change = 4;
                break;
        }

        world.setBlockMetadataWithNotify(x, y, z, change, 3);
    }

    @Override
    public boolean onUseWrench(World world, int x, int y, int z, EntityPlayer par5EntityPlayer, int side, float hitX, float hitY, float hitZ)
    {
        this.rotateBlock(world, x, y, z, ForgeDirection.getOrientation(side));
        return true;
    }

    public static boolean rotateBlock(World worldObj, int x, int y, int z, ForgeDirection axis, int mask)
    {
        int rotMeta = worldObj.getBlockMetadata(x, y, z);
        int masked = rotMeta & ~mask;
        ForgeDirection orientation = ForgeDirection.getOrientation(rotMeta & mask);
        ForgeDirection rotated = orientation.getRotation(axis);
        worldObj.setBlockMetadataWithNotify(x, y, z, rotated.ordinal() & mask | masked, 3);
        return true;
    }

    @Override
    public ForgeDirection getDirection(World world, int x, int y, int z)
    {
        return ForgeDirection.getOrientation(world.getBlockMetadata(x, y, z));
    }

    @Override
    public void setDirection(World world, int x, int y, int z, ForgeDirection direction)
    {
        world.setBlockMetadataWithNotify(x, y, z, direction.ordinal(), 3);
    }
}