rle.util
Class Rng

java.lang.Object
  rle.util.Rng

public class Rng
extends java.lang.Object

Some useful Random number functions.

Field Summary

static java.util.Random

random The random number generator

Constructor Summary

Rng()

Method Summary

static boolean	nIn(int n, int x) Perform a check with the probability of n / x, with n <= x.
static int	normal(int mean, int dev) Normal dist.
static boolean	oneIn(int x) Convenience -- 1 in X chance
static int	percent() Convenience -- 0-99 inclusive
static int	randInt(int n) Generates a random long integer X where O<=X
static int	randInt(int n, java.util.Random rng) Generates a random long integer X where O<=X
static int	randRange(int min, int max)
static int	randSpread(int ctr, int range)
static int	roll(int dice, int sides) Convenience -- simulated die roll.
static int	roll(int dice, int sides, int bonus) Convenience -- simulated die roll.
static int	rollStat() Roll a stat.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

random

public static java.util.Random random

The random number generator

Constructor Detail

Rng

public Rng()

Method Detail

randInt

public static int randInt(int n)

Generates a random long integer X where O<=X

randInt

public static int randInt(int n,
                          java.util.Random rng)

Generates a random long integer X where O<=X

randRange

public static int randRange(int min,
                            int max)

randSpread

public static int randSpread(int ctr,
                             int range)

percent

public static int percent()

Convenience -- 0-99 inclusive

roll

public static int roll(int dice,
                       int sides,
                       int bonus)

Convenience -- simulated die roll. eg (2,5,1) --> 3-11

roll

public static int roll(int dice,
                       int sides)

Convenience -- simulated die roll. eg (2,5) --> 2-10

oneIn

public static boolean oneIn(int x)

Convenience -- 1 in X chance

nIn

public static boolean nIn(int n,
                          int x)

Perform a check with the probability of n / x, with n <= x. The ratio will be computed with double precision.

rollStat

public static int rollStat()

Roll a stat.

normal

public static int normal(int mean,
                         int dev)

Normal dist.