public class ExplosionCustom implements Runnable {

    public final static double sqrt3 = Math.sqrt(3);
    public static boolean busyLock = false;
    List<Thread> waitingThreads = new Vector<Thread>();


    public static void doExplosion(final Entity exploder,final double r0,final boolean drop, final String type){


        System.out.println("Starting Explosion");
        final double A = 5*100; //This is a constant that corresponds to blast strength.
        final double B = 1; //This corresponds to strength of blast at max range. 1 means will damage leaves.
        final World worldObj = exploder.worldObj;
        final int rMax = Math.min((int)(Math.sqrt(A*r0/B)),128); //Maximium radius of damage  (r0*A/B, 1/E)
        int realRMax = (int)(Math.sqrt(A*r0/B));
        System.out.println("Max Radius "+rMax);
        final int x0 = (int) exploder.posX;
        final int y0 = (int) exploder.posY;
        final int z0 = (int) exploder.posZ;
        final double[] centreD = {exploder.posX,exploder.posZ,exploder.posY};
        EntityExplosionFireball fireball = new EntityExplosionFireball(exploder.worldObj,centreD,r0);
        exploder.worldObj.spawnEntityInWorld(fireball);
    //*


        new Thread( new Runnable(){public void run(){

                sphereSmartV2(exploder,r0, drop, A, B, rMax);

                System.out.println("Finished Explosion");
        }} ).start();



    }