Calculating Damage Between Two Numbers In Java [du

问题:

This question already has an answer here:

• How do I generate random integers within a specific range in Java? 65 answers

This is not just about finding a random number,

The answer I am looking for is how to add an expression to a random number to calculate a number based on the expression.

For example a base random number from a range of numbers, + the current lvl of a character, * the character's damage gain.

If I am creating a character that does damage between two numbers like this in java,

Damage = 44 to 55 per hit and I want to write this into a variable, how can I do this?

I am trying this,

double BottomDamage = 44 + level * 1.9;
double TopDamage = 55 + level * 1.9;

What is the proper way to write something like this if the damage would be between these two numbers 44 through 55 + level * 1.9???

回答1:

You should write an interface with a method damage and each type of character would have a class that implements this interface.

public interface CausesDamage ()
{
    public double damage ();
}

public abstact class CharacterType implements CausesDamage ()
{
   private int _level;
   ...
   public abstract double damage ();
   ...
   public int getLevel ()
   {
       return _level;
   }
}

public class Warrior extends CharacteType ()
{
   public static final int MIN_DAMAGE = ..;
   public static final int MAX_DAMAGE = ..;
   ...
   private Random rand = new Random();
   ...
   public double damage ()
   {
       return rand.nextInt(MAX_DAMAGE-MIN_DAMAGE+1)+MIN_DAMAGE + getLevel()*1.9;
   }
}

回答2:

So a random number between the range 44 and 55?

Could be like this:

/* returns random number between min (inclusive) and max (inclusive) */
public static int randomInt(int min, int max) { 
    return min + (int)(Math.random() * (max - min + 1)); 
}

int damageRange = randomInt(44, 55);
int damage = damageRange + level * 1.9;