Homework7

/*

@author Neil 06/8/2013 homework7

 */

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int ballNumber=200;

float[] posX=new float[ballNumber];

float[] posY=new float[ballNumber];

float[] speedX=new float[ballNumber];

float[] speedY=new float[ballNumber];

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void setup()

{

  size(500, 500);

  noStroke();

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  for (int i=0; i<ballNumber; i++) 

  {

    posX[i]=random(16, (width-15));

    posY[i]=random(16, (height-15));

    speedX[i]=random(-15, 15);

    speedY[i]=random(-15, 15);

  }

}

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void draw()

{  

  background(0);

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  for (int i=0;i<ballNumber;i++)

  {

    if (posX[i]>(width-15)||posX[i]<15)

    {

      speedX[i]=speedX[i]*-1;

    }

    if (posY[i]>(width-15)||posY[i]<15)

    {

      speedY[i]=speedY[i]*-1;

    }

    fill(random(0,255),random(0,255),random(0,255));

    ellipse(posX[i], posY[i], 30, 30);

    posX[i]+=speedX[i];

    posY[i]+=speedY[i];

  }

}

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