minecraft-kajetans-mod/src/main/java/me/km/blocks/BlockTrap.java

package me.km.blocks;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.block.state.IBlockState;
import net.minecraft.util.BlockRenderLayer;
import net.minecraft.util.math.AxisAlignedBB;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.IBlockAccess;
import net.minecraft.world.World;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

public class BlockTrap extends BlockBase
{
    protected static final AxisAlignedBB BOX = new AxisAlignedBB(0, 0, 0, 1, 0.0625d, 1);
    
    public BlockTrap(Material material, String name, String local) 
    {
        super(material, name, local);
    }  
    
    @Override
    public void neighborChanged(IBlockState state, World w, BlockPos pos, Block b, BlockPos fromPos)
    {
        if(!w.getBlockState(pos.down()).getMaterial().isSolid())
        {
            this.dropBlockAsItem(w, pos, state, 0);
            w.setBlockToAir(pos);
        }
        super.neighborChanged(state, w, pos, b, fromPos);
    }
    
    @Override
    public boolean canPlaceBlockAt(World w, BlockPos pos)
    {
        return w.getBlockState(pos.down()).getMaterial().isSolid() && super.canPlaceBlockAt(w, pos);
    }

    @Override
    public AxisAlignedBB getBoundingBox(IBlockState state, IBlockAccess source, BlockPos pos) 
    {
        return BOX;
    }

    @Override
    public AxisAlignedBB getCollisionBoundingBox(IBlockState blockState, IBlockAccess worldIn, BlockPos pos) 
    {
        return NULL_AABB;
    }
    
    @Override
    public boolean isOpaqueCube(IBlockState state)
    {
        return false;
    }

    @Override
    public boolean isFullCube(IBlockState state)
    {
        return false;
    }
    
    @Override
    public boolean canSpawnInBlock()
    {
        return false;
    }
    
    @SideOnly(Side.CLIENT)
    @Override
    public BlockRenderLayer getBlockLayer()
    {
        return BlockRenderLayer.CUTOUT;
    }
    
    @Override
    public boolean isPassable(IBlockAccess worldIn, BlockPos pos)
    {
        return true;
    }
}