So I'm trying to create a fishnet. To do so I'm implemeting IPlantable to Block (fishnets will grow like a crop. At the finish stage they will be changed to another block, which block model shows fish inside it and can be right clicked to aquire). Only problem that I have is that water currently destroys my block when it is being placed. So I make so that water that is toching this block, dosen't break it? Do I use doesBlockHaveSolidTopSurface or some other method and how?

 

My code for the net file

public BlocksVerkko() {
	super(Material.plants);


	float f = 0.375F;
        this.setTickRandomly(true);
	// TODO Auto-generated constructor stub
}
public static final PropertyInteger AGE = PropertyInteger.create("age", 0, 7);

 protected boolean canPlaceBlockOn(Block ground)
    {
        return ground == Blocks.sand || ground == Blocks.gravel;
    }

 public boolean isReplaceable(World worldIn, BlockPos pos)
    {
        return true;
    }

@Override
public boolean canPlaceBlockAt(World worldIn, BlockPos pos)
{
	int par2 = pos.getX();
	int par3 = pos.getY();
	int par4 = pos.getZ();

	if((worldIn.getBlockState(pos).getBlock() == Blocks.water
			&& worldIn.getBlockState(pos.down()).getBlock() == Blocks.sand
			&& worldIn.getBlockState(pos.up()).getBlock() == Blocks.water))
		return true;
	else if(worldIn.getBlockState(pos.down()).getBlock() == Blocks.sand
			&& worldIn.getBlockState(pos).getBlock() != Blocks.water)
		return true;
	else if((worldIn.getBlockState(pos).getBlock() == Blocks.water
			&& worldIn.getBlockState(pos.down()).getBlock() == Blocks.gravel
			&& worldIn.getBlockState(pos.up()).getBlock() == Blocks.water))
		return true;
	else if(worldIn.getBlockState(pos.down()).getBlock() == Blocks.gravel
			&& worldIn.getBlockState(pos).getBlock() != Blocks.water)
		return true;
	else
		return false;
}

@Override
public void onNeighborBlockChange(World par1World, BlockPos pos, IBlockState state, Block par5)
{
	super.onNeighborBlockChange(par1World, pos, state, par5);
	this.checkFlowerChange(par1World, pos, state);
}



protected final void checkFlowerChange(World worldIn, BlockPos pos, IBlockState state)
{

	if (!this.canBlockStay(worldIn, pos, state))
	{
		this.dropBlockAsItem(worldIn, pos, state, 0);
		if(worldIn.getBlockState(pos.down()).getBlock().equals(Blocks.air))
			worldIn.setBlockToAir(pos);
		if(worldIn.getBlockState(pos.up()).getBlock().equals(Blocks.water))
			worldIn.setBlockToAir(pos);
		else
			worldIn.setBlockToAir(pos);
	}
}

/**
* Can this block stay at this position.  Similar to canPlaceBlockAt except gets checked often with plants.
*/
public boolean canBlockStay(World worldIn, BlockPos pos, IBlockState state)
{
	BlockPos down = pos.down();
        Block soil = worldIn.getBlockState(down).getBlock();
        if (state.getBlock() != this) return this.canPlaceBlockOn(soil); //Forge: This function is called during world gen and placement, before this block is set, so if we are not 'here' then assume it's the pre-check.
        return soil.canSustainPlant(worldIn, down, net.minecraft.util.EnumFacing.UP, this);
}


public void updateTick(World worldIn, BlockPos pos, IBlockState state, Random rand)
{
        int j = ((Integer)state.getValue(AGE)).intValue();

        if (j == 7)
     {
        worldIn.setBlockState(pos, KivikausiBlocks.puska_marja.getDefaultState());
     }
    	  else
     {
        worldIn.setBlockState(pos, state.withProperty(AGE, Integer.valueOf(j + 1)), 4);
     }
  }       


  	@Override
    public boolean isOpaqueCube()
    {
        return false;
    }
  	
  	@Override
    public boolean isFullCube()
    {
        return false;
    }

    public IBlockState getStateFromMeta(int meta)
    {
        return this.getDefaultState().withProperty(AGE, Integer.valueOf(meta));
    }

    public int getMetaFromState(IBlockState state)
    {
        return ((Integer)state.getValue(AGE)).intValue();
    }

    protected BlockState createBlockState()
    {
        return new BlockState(this, new IProperty[] {AGE});
    }

	@Override
	public EnumPlantType getPlantType(IBlockAccess world, BlockPos pos) {
		// TODO Auto-generated method stub
		return EnumPlantType.Desert;
	}

	@Override
	public IBlockState getPlant(IBlockAccess world, BlockPos pos) {
		// TODO Auto-generated method stub
		return this.getDefaultState();
	}

	@Override
	public boolean canGrow(World worldIn, BlockPos pos, IBlockState state, boolean isClient) {
		// TODO Auto-generated method stub
		return false;
	}

	@Override
	public boolean canUseBonemeal(World worldIn, Random rand, BlockPos pos, IBlockState state) {
		// TODO Auto-generated method stub
		return false;
	}

	@Override
	public void grow(World worldIn, Random rand, BlockPos pos, IBlockState state) {
		// TODO Auto-generated method stub

	}




}

BlockDynamicLiquid#isBlocked

controls whether or not a liquid can flow into an adjacent block. Liquids won't replace a block if it's a door, a standing sign, a ladder, sugar canes, uses

Material.portal

or a

Material

that returns

true

from

Material#blocksMovement

.

 

In this case, you just need to use a

Material

that returns

true

from

Material#blocksMovement

. This can either be an existing one or your own.