RuneScape combat calculator

package fearme;

public final class RuneScape {

    private static void combat(final double[] health, final double oaccuracy, final double obase_damage) {
        for (int i = 1; i < health.length; i++) {
            for (int j = 1; j < obase_damage; j++) {
                if (i - j >= 0) {
                    health[i + j] += oaccuracy * health[j] / obase_damage;
                } else {
                    health[0] += oaccuracy * health[j] / obase_damage;
                }
                health[j] *= 1 - oaccuracy;
                health[j] += oaccuracy * health[j] / obase_damage;
            }
        }
    }

    private static void statistics(double p, double win, double loss, final double[] health, final double[] ohealth) {
        double temp = 1 - (1 - health[0]) * (1 - ohealth[0]);
        temp -= p;
        if (health[0] > 0 || ohealth[0] > 0) {
            win += temp * (ohealth[0] / (ohealth[0] + health[0]));
            loss += temp * (health[0] / (ohealth[0] + health[0]));
        }
        p += temp;
    }

    private static void create_health(final double[] health, final double constitution) {
        for (int i = 0; i < constitution * 10; i++) {
            health[i] = 0;
        }
        health[health.length - 1] = 1;
    }

    public static void main(final String[] args) {
        // you
        final double attack = 99;
        final double strength = 99;
        final double defence = 99;
        final double constitution = 99;

        // opponent
        final double oattack = 99;
        final double ostrength = 99;
        final double odefence = 99;
        final double oconstitution = 99;

        final double effective_attack = 10 * (attack + 8 + 3); // 5/8 from standard formula, 3 from style bonus
        final double effective_strength = strength + 8;
        final double base_damage = effective_strength + 5;
        final double effective_defence = 10 * (defence + 8);
        final double oeffective_attack = 10 * (oattack + 8 + 3);
        final double oeffective_strength = ostrength + 8;
        final double obase_damage = oeffective_strength + 5;
        final double oeffective_defence = 10 * (odefence + 8);
        double accuracy;
        double oaccuracy;

        if (attack < odefence) {
            accuracy = (effective_attack - 1) / (2 * oeffective_defence);
        } else {
            accuracy = 1 - (oeffective_defence + 1) / (2 * effective_attack);
        }
        if (oattack < defence) {
            oaccuracy = (oeffective_attack - 1) / (2 * effective_defence);
        } else {
            oaccuracy = 1 - (effective_defence + 1) / (2 * oeffective_attack);
        }

        System.out.println("Your accuarcy: " + accuracy);
        System.out.println("Opponnent's accuracy: " + oaccuracy);

        final double[] health = new double[(int) (constitution * 10)];
        final double[] ohealth = new double[(int) (oconstitution * 10)];

        create_health(health, constitution);
        create_health(ohealth, oconstitution);

        final double p = 0;
        final double win = 0;
        final double loss = 0;
        for (int hit = 0; win + loss < 0.99 && hit < 1000; hit++) {
            combat(health, oaccuracy, obase_damage);
            combat(ohealth, accuracy, base_damage);
            statistics(p, win, loss, health, ohealth);
        }
        System.out.println("Your win chance: " + win);
        System.out.println("Opponent's win cahnce: " + loss);
    }

}