content: package net.minecraft.block;
  
  import net.minecraft.block.material.Material;
  import net.minecraft.block.state.IBlockState;
  import net.minecraft.creativetab.CreativeTabs;
  import net.minecraft.enchantment.EnchantmentHelper;
  import net.minecraft.entity.player.EntityPlayer;
  import net.minecraft.init.Blocks;
  import net.minecraft.item.ItemStack;
  import net.minecraft.stats.StatList;
  import net.minecraft.tileentity.TileEntity;
  import net.minecraft.util.BlockPos;
  import net.minecraft.util.EnumWorldBlockLayer;
  import net.minecraft.world.EnumSkyBlock;
  import net.minecraft.world.World;
  
  import java.util.Random;
  
  public class BlockIce extends BlockBreakable {
      public BlockIce() {
          super(Material.ice, false);
          this.slipperiness = 0.98F;
          this.setTickRandomly(true);
          this.setCreativeTab(CreativeTabs.tabBlock);
      }
  
      public EnumWorldBlockLayer getBlockLayer() {
          return EnumWorldBlockLayer.TRANSLUCENT;
      }
  
      public void harvestBlock(World worldIn, EntityPlayer player, BlockPos pos, IBlockState state, TileEntity te) {
          player.triggerAchievement(StatList.mineBlockStatArray[Block.getIdFromBlock(this)]);
          player.addExhaustion(0.025F);
  
          if (this.canSilkHarvest() && EnchantmentHelper.getSilkTouchModifier(player)) {
              ItemStack itemstack = this.createStackedBlock(state);
  
              if (itemstack != null) {
                  spawnAsEntity(worldIn, pos, itemstack);
              }
          } else {
              if (worldIn.provider.doesWaterVaporize()) {
                  worldIn.setBlockToAir(pos);
                  return;
              }
  
              int i = EnchantmentHelper.getFortuneModifier(player);
              this.dropBlockAsItem(worldIn, pos, state, i);
              Material material = worldIn.getBlockState(pos.down()).getBlock().getMaterial();
  
              if (material.blocksMovement() || material.isLiquid()) {
                  worldIn.setBlockState(pos, Blocks.flowing_water.getDefaultState());
              }
          }
      }
  
      public int quantityDropped(Random random) {
          return 0;
      }
  
      public void updateTick(World worldIn, BlockPos pos, IBlockState state, Random rand) {
          if (worldIn.getLightFor(EnumSkyBlock.BLOCK, pos) > 11 - this.getLightOpacity()) {
              if (worldIn.provider.doesWaterVaporize()) {
                  worldIn.setBlockToAir(pos);
              } else {
                  this.dropBlockAsItem(worldIn, pos, worldIn.getBlockState(pos), 0);
                  worldIn.setBlockState(pos, Blocks.water.getDefaultState());
              }
          }
      }
  
      public int getMobilityFlag() {
          return 0;
      }
  }
  