[1.15.2] Allow placing the given block only in a village

[FiveShipHUN]

I'd like to create a block which can be placed only in a village. Is there a way to find out whether the given coordinates/BlockPos is inside a village or not?

This is my current code (not so much): 
 

@Override
public void onBlockPlacedBy(World world, BlockPos pos, BlockState state, LivingEntity placer, ItemStack stack) {
	if (!world.isRemote()) {
	}
}

(The uploaded file contains the code above.)

EventSubscriber.java

Edited February 2, 2020 by FiveShipHUN

[FiveShipHUN]

Thanks the help!

Here's the code
 

			@Override
			public void onBlockPlacedBy(World world, BlockPos pos1, BlockState state, LivingEntity placer,
					ItemStack stack) {
				if (!world.isRemote()) {
					ServerWorld w = world.getServer().getWorld(placer.dimension);
					BlockPos pos2 = w.findNearestStructure("Village", pos1, 100, false);
					if (pos2 == null) {
						destroyIt(world, pos1, state, placer, stack);
						return;
					}
					double i = pos1.getX() - pos2.getX();
					double j = pos1.getZ() - pos2.getZ();
					double d = MathHelper.sqrt((float) (i * i + j * j));
					if (d > 100) {
						destroyIt(world, pos1, state, placer, stack);
						return;
					}
				}
			}

			private void destroyIt(World world, BlockPos pos1, BlockState state, LivingEntity placer, ItemStack stack) {
                if(placer instanceof PlayerEntity) {
				   world.destroyBlock(pos1, !((PlayerEntity) placer).isCreative());
				   ((PlayerEntity) placer)
						.sendMessage(new TranslationTextComponent("block.cae.colony_table.placedInWrongPlace"));
                }
			}

 

Edited February 2, 2020 by FiveShipHUN