If I use:

public AxisAlignedBB getBoundingBox(IBlockState state, IBlockAccess source, BlockPos pos) {
		AxisAlignedBB collision = new AxisAlignedBB(0, 0, 0, 0, 0, 0);

		return collision;
	}

There is no player collision although the block can't be mined.

Two things.

1. Use Block.NULL_AABB instead
2. Second override rayTrace and properly raytrace a collision box.

Edited July 23, 20178 yr by Animefan8888

Override Block#getCollisionBoundingBox to return Block.NULL_AABB instead of overriding Block#getBoundingBox.