public class Hit_calc
{
  //Attacking player
  static final boolean mageAtk=false; //True if using a Magic attack on a non NPC
  static final int atkLvl=61; //Range, Magic or Attack level
  static final int atkBonus=12; //Slash, Crush, Stab, Range or Magic attack bonus
  static final int atkStyleBonus=0; //3 for Accurate, 1 for Controlled, 0 otherwise
  static final double atkPrayBonus=1.00; //Offensive prayer multiplier
  static final double atkVoidBonus=1.10; //Void accuracy multiplier

  //Defending player
  static final int defLvl=1; //Defense or NPC magic level
  static final int defBonus=0; //Slash, Crush, Stab, Range or Magic defense bonus
  static final int defStyleBonus=0; //3 for Defensive or Long range, 1 for Controlled, 0 otherwise
  static final double defPrayBonus=1.00; //Defensive prayer multiplier
  static final double magePrayBonus=1.00; //Magic prayer multiplier
  static final int mageLvl=1; //Opponents Magic level


  public static void main(String[] args)
  {
    System.out.println("Chance to hit: "+hitChance());
  }

  public static double hitChance()
  {
    double atkRoll=getRoll(atkLvl,atkPrayBonus,atkStyleBonus,atkBonus,atkVoidBonus);
    double defRoll=getRoll(defLvl,defPrayBonus,defStyleBonus,defBonus,1.00);
    if(mageAtk)
      defRoll=getMageRoll();
    if(atkRoll>defRoll)
      return 1-(defRoll+2)/(2*(atkRoll+1));
    else
      return atkRoll/(2*(defRoll+1));
  }

  private static int getRoll(int atkLvl, double prayBonus, int styleBonus, int bonus, double voidBonus)
  {
    int effectiveLvl=(int)((((int)(atkLvl*prayBonus))+styleBonus+8)*voidBonus);
    return effectiveLvl*(bonus+64);
  }

  private static double getMageRoll()
  {
    int effectiveDefLvl=(int)((((int)(defLvl*defPrayBonus))+defStyleBonus+8)*0.30);
    int effectiveLvl=(int)(((int)(mageLvl*magePrayBonus)+8)*0.70)+effectiveDefLvl;
    return effectiveLvl*(defBonus+64);
  }

}