Module cerberus.random

The random module provides functions to generate random numbers. More...

Declarations

Imported By
`cerberus`

Please note that only documented modules are listed here, there might be undocumented modules that import this one.

Globals
`Seed : Int`	The current random number generator seed used by Rnd.

Functions
`Rnd : Float ()`	Returns a random float in the range 0 (exclusive) to 1 (exclusive).
`Rnd : Float ( range:Float )`	Returns a random float in the range 0 (exclusive) to range (exclusive).
`Rnd : Float ( low:Float, high:Float )`	Returns a random float in the range low (exclusive) to high (exclusive).

Detailed Discussion

The random module provides functions to generate random numbers.

Print Rnd() ' anything between 0.0 and 1.0
Print Int(Rnd(10)) ' any integer from 0 to 9
Print Int(Rnd(5,10)) ' any integer from 5 to 9
Print (Int(Rnd(21))-10) ' any integer from -10 to 10

Globals Documentation

Global Seed : Int

The current random number generator seed used by Rnd.

A common way to initialize seed is to use the current system time, so the random number generator always generates different sequences after every start up:

Local date := GetDate()
Seed = date[3] * 3600000 + date[4] * 60000 + date[5] * 1000 + date[6]

See also

Rnd

Functions Documentation

Function Rnd : Float ()

Returns a random float in the range 0 (exclusive) to 1 (exclusive).

Print Rnd() ' anything between 0.0 and 1.0
Print Int(Rnd()) ' always 0

See also

Seed

Function Rnd : Float ( range:Float )

Returns a random float in the range 0 (exclusive) to range (exclusive).

Print Rnd(10) ' anything between 0.0 and 10.0
Print Int(Rnd(10)) ' any integer from 0 to 9

See also

Seed

Function Rnd : Float ( low:Float, high:Float )

Returns a random float in the range low (exclusive) to high (exclusive).

Print Rnd(5,10) ' anything between 5.0 and 10.0
Print Int(Rnd(5,10)) ' any integer from 5 to 9

Attention: When trying to generate integers around 0, don't write Int(Rnd(-10,10))! Because all numbers between -1.0 and +1.0 will get cast to 0, doubling the chance for a 0. Instead, write:

Print (Int(Rnd(21))-10) ' any integer (from 0 to 20)-10 = from -10 to 10

See also

Seed