asteroids

float xPos;

float yPos;

float friction;

float velocity;

​

void setup () {

  size(500,500);

  background(150);

  xPos = width/2;

  yPos = height/2;

  strokeWeight(5);

  friction = 100;

}

​

​

void draw () {

  noStroke();

  fill(150,150,150,100);

  rect(0,0,width,height);

​

  xPos += ((mouseX-(width/2))/friction);

  yPos += ((mouseY-(height/2))/friction);

  if(xPos > width+25){xPos = -25;}

  else if (xPos < -25){xPos = width+25;}

​

  if(yPos > height+25){yPos = -25;}

  else if (yPos < -25){yPos = height+25;}

  velocity = sqrt((mouseX-(width/2))*(mouseX-(width/2)) + (mouseY-(height/2))*(mouseY-(height/2)));

  stroke(255,255-(velocity/2),255-(velocity/2));

  fill(255,255-(velocity/2),255-(velocity/2));

  ellipse(xPos,yPos,50,50);

}

​

​