Rave Ball

float xPos;

float yPos;

float xSpeed;

float ySpeed;

float startSpeed = 2;

int index = 0;

​

void setup () {

  size(500,400);

  background(150);

  //defines innitial position of ellipse

  xPos = width/2;

  yPos = height/2;

  strokeWeight(5);

  //defines the inital speed of the ellipse

  xSpeed = startSpeed;

  ySpeed = startSpeed;

  //change color mode to Hue, Saturation, Brightness

  colorMode(HSB, 360, 100, 100);

}

​

​

void draw () {

  //cycles through Hues

  if (index<360){

    index++;

  } else {index =0;}

  //adds faded background

  //creates ghosting effect

  noStroke();

  fill(0,0,0,50);

  rect(0,0,width,height);

  //checks if ellipse is within width and height

  //reverses speed direction on collision

  if (xPos > (width+56)) {xPos = -56;}

  else if (xPos < -56) {xPos = (width+56);}

  if (yPos > (height-26) || yPos < 26) {ySpeed*=-1;}

  //applies speed to ellipse

  xPos+=xSpeed;

  yPos+=ySpeed;

  //draw glow effect

  fill(index,100,100,5);

  for(int i=0;i<10;i++){

    ellipse(xPos,yPos,50+(i*5),50+(i*5));

  }

  //draws ellipse 

  noStroke();

  fill(index,100,100,100);

  ellipse(xPos,yPos,50,50);

}

​

void mousePressed() {

  if (dist(mouseX,mouseY,xPos,yPos)<26) {xSpeed*=-1;}

}

​

​