BlockBush.java

package net.minecraft.block;

import java.util.Random;
import net.minecraft.block.material.Material;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.init.Blocks;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.world.World;
import net.minecraft.world.IBlockAccess;
import net.minecraftforge.common.EnumPlantType;
import net.minecraftforge.common.util.ForgeDirection;
import net.minecraftforge.common.IPlantable;
import static net.minecraftforge.common.EnumPlantType.*;

public class BlockBush extends Block implements IPlantable
{
    private static final String __OBFID = "CL_00000208";

    protected BlockBush(Material materialIn)
    {
        super(materialIn);
        this.setTickRandomly(true);
        float f = 0.2F;
        this.setBlockBounds(0.5F - f, 0.0F, 0.5F - f, 0.5F + f, f * 3.0F, 0.5F + f);
        this.setCreativeTab(CreativeTabs.tabDecorations);
    }

    protected BlockBush()
    {
        this(Material.plants);
    }

    public boolean canPlaceBlockAt(World worldIn, int x, int y, int z)
    {
        return super.canPlaceBlockAt(worldIn, x, y, z) && this.canBlockStay(worldIn, x, y, z);
    }

    /**
     * is the block grass, dirt or farmland
     */
    protected boolean canPlaceBlockOn(Block ground)
    {
        return ground == Blocks.grass || ground == Blocks.dirt || ground == Blocks.farmland;
    }

    public void onNeighborBlockChange(World worldIn, int x, int y, int z, Block neighbor)
    {
        super.onNeighborBlockChange(worldIn, x, y, z, neighbor);
        this.checkAndDropBlock(worldIn, x, y, z);
    }

    /**
     * Ticks the block if it's been scheduled
     */
    public void updateTick(World worldIn, int x, int y, int z, Random random)
    {
        this.checkAndDropBlock(worldIn, x, y, z);
    }

    /**
     * checks if the block can stay, if not drop as item
     */
    protected void checkAndDropBlock(World worldIn, int x, int y, int z)
    {
        if (!this.canBlockStay(worldIn, x, y, z))
        {
            this.dropBlockAsItem(worldIn, x, y, z, worldIn.getBlockMetadata(x, y, z), 0);
            worldIn.setBlock(x, y, z, getBlockById(0), 0, 2);
        }
    }

    /**
     * Can this block stay at this position.  Similar to canPlaceBlockAt except gets checked often with plants.
     */
    public boolean canBlockStay(World worldIn, int x, int y, int z)
    {
        return  worldIn.getBlock(x, y - 1, z).canSustainPlant(worldIn, x, y - 1, z, ForgeDirection.UP, this);
    }

    /**
     * Returns a bounding box from the pool of bounding boxes (this means this box can change after the pool has been
     * cleared to be reused)
     */
    public AxisAlignedBB getCollisionBoundingBoxFromPool(World worldIn, int x, int y, int z)
    {
        return null;
    }

    public boolean isOpaqueCube()
    {
        return false;
    }

    public boolean renderAsNormalBlock()
    {
        return false;
    }

    /**
     * The type of render function that is called for this block
     */
    public int getRenderType()
    {
        return 1;
    }

    @Override
    public EnumPlantType getPlantType(IBlockAccess world, int x, int y, int z)
    {
        if (this == Blocks.wheat)          return Crop;
        if (this == Blocks.carrots)        return Crop;
        if (this == Blocks.potatoes)       return Crop;
        if (this == Blocks.melon_stem)     return Crop;
        if (this == Blocks.pumpkin_stem)   return Crop;
        if (this == Blocks.deadbush)       return Desert;
        if (this == Blocks.waterlily)      return Water;
        if (this == Blocks.red_mushroom)   return Cave;
        if (this == Blocks.brown_mushroom) return Cave;
        if (this == Blocks.nether_wart)    return Nether;
        if (this == Blocks.sapling)        return Plains;
        if (this == Blocks.tallgrass)      return Plains;
        if (this == Blocks.double_plant)   return Plains;
        if (this == Blocks.red_flower)     return Plains;
        if (this == Blocks.yellow_flower)  return Plains;        
        return Plains;
    }

    @Override
    public Block getPlant(IBlockAccess world, int x, int y, int z)
    {
        return this;
    }

    @Override
    public int getPlantMetadata(IBlockAccess world, int x, int y, int z)
    {
        return world.getBlockMetadata(x, y, z);
    }
}