Method canPlaceAt

src/main/java/net/minecraft/block/BlockTorch.java:84–89

(World worldIn, BlockPos pos, EnumFacing facing)

    }

    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);
    }

    /**
     * Called by ItemBlocks just before a block is actually set in the world, to allow for adjustments to the