[1.15.2] How can I get the block a water bucket was used on?

I am trying to add a check to see if a water bucket was used on an ice block.

This is my current implementation:

private static boolean wasBucketUsedOnIce(FillBucketEvent event) {

    Block targetedBlock = event.getWorld().getBlockState(new BlockPos(event.getTarget().getHitVec())).getBlock();

    return (targetedBlock == Blocks.ICE);
}

My problem is that this does not always return the block the water bucket was used on. It seems to depend on what the player is looking at after the water has been placed.

E.g.

In this case the targeted block is the ice block...

But in this case the targeted block is the block the water is placed in...

In either case I want my code to retrieve the ice block. However I am not sure how I can do this properly. 

I think one solution is to check if the targeted block is air, and if it is, get the next block along from the player's perspective. But I am not sure how to do this either.

Any advice will be greatly appreciated!

Edited February 9, 20205 yr by Zaboth