content: package net.minecraft.block;
  
  import com.google.common.base.Predicate;
  import net.minecraft.block.material.Material;
  import net.minecraft.block.properties.IProperty;
  import net.minecraft.block.properties.PropertyDirection;
  import net.minecraft.block.state.BlockState;
  import net.minecraft.block.state.IBlockState;
  import net.minecraft.creativetab.CreativeTabs;
  import net.minecraft.entity.EntityLivingBase;
  import net.minecraft.init.Blocks;
  import net.minecraft.util.*;
  import net.minecraft.world.World;
  
  import java.util.Random;
  
  public class BlockTorch extends Block {
      public static final PropertyDirection FACING = PropertyDirection.create("facing", new Predicate<EnumFacing>() {
          public boolean apply(EnumFacing p_apply_1_) {
              return p_apply_1_ != EnumFacing.DOWN;
          }
      });
  
      protected BlockTorch() {
          super(Material.circuits);
          this.setDefaultState(this.blockState.getBaseState().withProperty(FACING, EnumFacing.UP));
          this.setTickRandomly(true);
          this.setCreativeTab(CreativeTabs.tabDecorations);
      }
  
      public AxisAlignedBB getCollisionBoundingBox(World worldIn, BlockPos pos, IBlockState state) {
          return null;
      }
  
      public boolean isOpaqueCube() {
          return false;
      }
  
      public boolean isFullCube() {
          return false;
      }
  
      private boolean canPlaceOn(World worldIn, BlockPos pos) {
          if (World.doesBlockHaveSolidTopSurface(worldIn, pos)) {
              return true;
          } else {
              Block block = worldIn.getBlockState(pos).getBlock();
              return block instanceof BlockFence || block == Blocks.glass || block == Blocks.cobblestone_wall || block == Blocks.stained_glass;
          }
      }
  
      public boolean canPlaceBlockAt(World worldIn, BlockPos pos) {
          for (EnumFacing enumfacing : FACING.getAllowedValues()) {
              if (this.canPlaceAt(worldIn, pos, enumfacing)) {
                  return true;
              }
          }
  
          return false;
      }
  
      private boolean canPlaceAt(World worldIn, BlockPos pos, EnumFacing facing) {
          BlockPos blockpos = pos.offset(facing.getOpposite());
          boolean flag = facing.getAxis().isHorizontal();
          return flag && worldIn.isBlockNormalCube(blockpos, true) || facing.equals(EnumFacing.UP) && this.canPlaceOn(worldIn, blockpos);
      }
  
      public IBlockState onBlockPlaced(World worldIn, BlockPos pos, EnumFacing facing, float hitX, float hitY, float hitZ, int meta, EntityLivingBase placer) {
          if (this.canPlaceAt(worldIn, pos, facing)) {
              return this.getDefaultState().withProperty(FACING, facing);
          } else {
              for (EnumFacing enumfacing : EnumFacing.Plane.HORIZONTAL) {
                  if (worldIn.isBlockNormalCube(pos.offset(enumfacing.getOpposite()), true)) {
                      return this.getDefaultState().withProperty(FACING, enumfacing);
                  }
              }
  
              return this.getDefaultState();
          }
      }
  
      public void onBlockAdded(World worldIn, BlockPos pos, IBlockState state) {
          this.checkForDrop(worldIn, pos, state);
      }
  
      public void onNeighborBlockChange(World worldIn, BlockPos pos, IBlockState state, Block neighborBlock) {
          this.onNeighborChangeInternal(worldIn, pos, state);
      }
  
      protected boolean onNeighborChangeInternal(World worldIn, BlockPos pos, IBlockState state) {
          if (!this.checkForDrop(worldIn, pos, state)) {
              return true;
          } else {
              EnumFacing enumfacing = state.getValue(FACING);
              EnumFacing.Axis enumfacing$axis = enumfacing.getAxis();
              EnumFacing enumfacing1 = enumfacing.getOpposite();
              boolean flag = false;
  
              if (enumfacing$axis.isHorizontal() && !worldIn.isBlockNormalCube(pos.offset(enumfacing1), true)) {
                  flag = true;
              } else if (enumfacing$axis.isVertical() && !this.canPlaceOn(worldIn, pos.offset(enumfacing1))) {
                  flag = true;
              }
  
              if (flag) {
                  this.dropBlockAsItem(worldIn, pos, state, 0);
                  worldIn.setBlockToAir(pos);
                  return true;
              } else {
                  return false;
              }
          }
      }
  
      protected boolean checkForDrop(World worldIn, BlockPos pos, IBlockState state) {
          if (state.getBlock() == this && this.canPlaceAt(worldIn, pos, state.getValue(FACING))) {
              return true;
          } else {
              if (worldIn.getBlockState(pos).getBlock() == this) {
                  this.dropBlockAsItem(worldIn, pos, state, 0);
                  worldIn.setBlockToAir(pos);
              }
  
              return false;
          }
      }
  
      public MovingObjectPosition collisionRayTrace(World worldIn, BlockPos pos, Vec3 start, Vec3 end) {
          EnumFacing enumfacing = worldIn.getBlockState(pos).getValue(FACING);
          float f = 0.15F;
  
          if (enumfacing == EnumFacing.EAST) {
              this.setBlockBounds(0.0F, 0.2F, 0.5F - f, f * 2.0F, 0.8F, 0.5F + f);
          } else if (enumfacing == EnumFacing.WEST) {
              this.setBlockBounds(1.0F - f * 2.0F, 0.2F, 0.5F - f, 1.0F, 0.8F, 0.5F + f);
          } else if (enumfacing == EnumFacing.SOUTH) {
              this.setBlockBounds(0.5F - f, 0.2F, 0.0F, 0.5F + f, 0.8F, f * 2.0F);
          } else if (enumfacing == EnumFacing.NORTH) {
              this.setBlockBounds(0.5F - f, 0.2F, 1.0F - f * 2.0F, 0.5F + f, 0.8F, 1.0F);
          } else {
              f = 0.1F;
              this.setBlockBounds(0.5F - f, 0.0F, 0.5F - f, 0.5F + f, 0.6F, 0.5F + f);
          }
  
          return super.collisionRayTrace(worldIn, pos, start, end);
      }
  
      public void randomDisplayTick(World worldIn, BlockPos pos, IBlockState state, Random rand) {
          EnumFacing enumfacing = state.getValue(FACING);
          double d0 = (double) pos.getX() + 0.5D;
          double d1 = (double) pos.getY() + 0.7D;
          double d2 = (double) pos.getZ() + 0.5D;
          double d3 = 0.22D;
          double d4 = 0.27D;
  
          if (enumfacing.getAxis().isHorizontal()) {
              EnumFacing enumfacing1 = enumfacing.getOpposite();
              worldIn.spawnParticle(EnumParticleTypes.SMOKE_NORMAL, d0 + d4 * (double) enumfacing1.getFrontOffsetX(), d1 + d3, d2 + d4 * (double) enumfacing1.getFrontOffsetZ(), 0.0D, 0.0D, 0.0D);
              worldIn.spawnParticle(EnumParticleTypes.FLAME, d0 + d4 * (double) enumfacing1.getFrontOffsetX(), d1 + d3, d2 + d4 * (double) enumfacing1.getFrontOffsetZ(), 0.0D, 0.0D, 0.0D);
          } else {
              worldIn.spawnParticle(EnumParticleTypes.SMOKE_NORMAL, d0, d1, d2, 0.0D, 0.0D, 0.0D);
              worldIn.spawnParticle(EnumParticleTypes.FLAME, d0, d1, d2, 0.0D, 0.0D, 0.0D);
          }
      }
  
      public EnumWorldBlockLayer getBlockLayer() {
          return EnumWorldBlockLayer.CUTOUT;
      }
  
      public IBlockState getStateFromMeta(int meta) {
          IBlockState iblockstate = this.getDefaultState();
  
          switch (meta) {
              case 1:
                  iblockstate = iblockstate.withProperty(FACING, EnumFacing.EAST);
                  break;
  
              case 2:
                  iblockstate = iblockstate.withProperty(FACING, EnumFacing.WEST);
                  break;
  
              case 3:
                  iblockstate = iblockstate.withProperty(FACING, EnumFacing.SOUTH);
                  break;
  
              case 4:
                  iblockstate = iblockstate.withProperty(FACING, EnumFacing.NORTH);
                  break;
  
              case 5:
              default:
                  iblockstate = iblockstate.withProperty(FACING, EnumFacing.UP);
          }
  
          return iblockstate;
      }
  
      public int getMetaFromState(IBlockState state) {
          int i = 0;
  
          switch (state.getValue(FACING)) {
              case EAST:
                  i = i | 1;
                  break;
  
              case WEST:
                  i = i | 2;
                  break;
  
              case SOUTH:
                  i = i | 3;
                  break;
  
              case NORTH:
                  i = i | 4;
                  break;
  
              case DOWN:
              case UP:
              default:
                  i = i | 5;
          }
  
          return i;
      }
  
      protected BlockState createBlockState() {
          return new BlockState(this, FACING);
      }
  }
  