content: package net.minecraft.block;
  
  import net.minecraft.block.material.MapColor;
  import net.minecraft.block.material.Material;
  import net.minecraft.block.state.IBlockState;
  import net.minecraft.creativetab.CreativeTabs;
  import net.minecraft.init.Blocks;
  import net.minecraft.util.AxisAlignedBB;
  import net.minecraft.util.BlockPos;
  import net.minecraft.util.EnumWorldBlockLayer;
  import net.minecraft.world.World;
  
  import java.util.Random;
  
  public class BlockBush extends Block {
      protected BlockBush() {
          this(Material.plants);
      }
  
      protected BlockBush(Material materialIn) {
          this(materialIn, materialIn.getMaterialMapColor());
      }
  
      protected BlockBush(Material p_i46452_1_, MapColor p_i46452_2_) {
          super(p_i46452_1_, p_i46452_2_);
          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);
      }
  
      public boolean canPlaceBlockAt(World worldIn, BlockPos pos) {
          return super.canPlaceBlockAt(worldIn, pos) && this.canPlaceBlockOn(worldIn.getBlockState(pos.down()).getBlock());
      }
  
      protected boolean canPlaceBlockOn(Block ground) {
          return ground == Blocks.grass || ground == Blocks.dirt || ground == Blocks.farmland;
      }
  
      public void onNeighborBlockChange(World worldIn, BlockPos pos, IBlockState state, Block neighborBlock) {
          super.onNeighborBlockChange(worldIn, pos, state, neighborBlock);
          this.checkAndDropBlock(worldIn, pos, state);
      }
  
      public void updateTick(World worldIn, BlockPos pos, IBlockState state, Random rand) {
          this.checkAndDropBlock(worldIn, pos, state);
      }
  
      protected void checkAndDropBlock(World worldIn, BlockPos pos, IBlockState state) {
          if (!this.canBlockStay(worldIn, pos, state)) {
              this.dropBlockAsItem(worldIn, pos, state, 0);
              worldIn.setBlockState(pos, Blocks.air.getDefaultState(), 3);
          }
      }
  
      public boolean canBlockStay(World worldIn, BlockPos pos, IBlockState state) {
          return this.canPlaceBlockOn(worldIn.getBlockState(pos.down()).getBlock());
      }
  
      public AxisAlignedBB getCollisionBoundingBox(World worldIn, BlockPos pos, IBlockState state) {
          return null;
      }
  
      public boolean isOpaqueCube() {
          return false;
      }
  
      public boolean isFullCube() {
          return false;
      }
  
      public EnumWorldBlockLayer getBlockLayer() {
          return EnumWorldBlockLayer.CUTOUT;
      }
  }
  