// Class Implementation File for the Universe Class

// (c) 1999 Guy W. Lecky-Thompson

// All Rights Reserved

Universe::Universe(unsigned long ulXDimension,

unsigned long ulYDimension)

{

// Set the parameters for this universe

this->ulXDimension = ulXDimension;

this->ulYDimension = ulYDimension;

// Initialise the randomizer

this->prRandomizer = new PseudoRandomizer(ulXDimension,

ulYDimension,

ulXDimension * ulYDimension);

}

int Universe::StarAt(unsigned long ulXPosition,

unsigned long ulYPosition,

unsigned long ulSerialNumber)

{

unsigned long ulRandomValue;

// Set up the serial number for this grid reference

ulSerialNumber = ((ulYPosition + 1) * this->ulXDimension) + ulXPosition);

for (unsigned long ulCounter = 0; ulCounter < ulSerialNumber; ulCounter++)

{

ulRandomValue = this->prRandomizer->PseudoRandom();

}

// If ulRandomValue falls in the lower 1%, there is a star here

if (ulRandomValue <= ((this->ulXDimension * this->ulYDimension) / 100))

return 1;

return 0;

}

// Class Header File for the Universe Class

// (c) 1999 Guy W. Lecky-Thompson

// All Rights Reserved

#include "prand.h" // The Class Definition for the random number generation

class Universe

{

private:

unsigned long ulXDimension, ulYDimension; // The 'size' of the Universe

unsigned long ulUniverseSerialNumber;

PseudoRandomizer * prRandomizer;

public:

Universe(unsigned long ulXDimension,

unsigned long ulYDimension);

int StarAt(unsigned long ulXPosition,

unsigned long ulYPosition,

unsigned long ulSerialNumber);

};