public boolean isOverLiquid()
    {
        boolean foundLiquid = false;
        boolean foundSolid = false;

        // check collision boxes below player
        for(AxisAlignedBB bb : WMinecraft.getWorld().getCollisionBoxes(
            WMinecraft.getPlayer(),
            WMinecraft.getPlayer().boundingBox.offset(0, -0.5, 0)))
        {
            BlockPos pos = new BlockPos(bb.getCenter());
            Material material = WBlock.getMaterial(pos);

            if(material == Material.WATER || material == Material.LAVA)
                foundLiquid = true;
            else if(material != Material.AIR)
                foundSolid = true;
        }

        return foundLiquid && !foundSolid;
    }