? - OpenProcessing

mySketch
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Physics physics;
​
float ground;
​
PVector flyPos;
​
int score = 0;
int goal = 10;
int time = 20;
​
void setup() {
  size(500, 500);
​
  physics = new Physics(width / 2, height / 2, 2, .95);
​
  ground = height - 50;
​
  flyPos = randomPos();
}
​
void draw() {
  background(0, 30, 21);
​
  float secondsPassed = millis() / 1000;
  float timeLeft = time - secondsPassed;
  strokeWeight(5);
  stroke(255);
  noFill();
  arc(100, 50, 125, 75, 0, timeLeft / time * 2 * PI);
  strokeWeight(1);
​
  if (secondsPassed > time) {
    background(0);
    fill(255);
    textAlign(CENTER, CENTER);
    if (score < goal) {
      textSize(75);
      text("GAME OVER", width / 2, height / 2);
    } else {
      fill(255, 200, 0);
      textSize(75);
      text("GAME WON", width / 2, height / 2);
    }
    textSize(50);
    text("Your score was " + score, width / 2, height / 2 + 100);
    noLoop();
    return;
  }
​
  textSize(48);
  textAlign(CENTER, CENTER);
  fill(0, 255, 0);
  text("?", physics.playerPos.x, physics.playerPos.y);
​
  groundCollisionResponse(groundCollisionDetection());
​
  if (!isOnGround())
    physics.gravity();
  physics.update();
​
  if (physics.playerPos.x > width) {
    physics.playerPos.x = 0;
  }
  if (physics.playerPos.x < 0) {
    physics.playerPos.x = width;
  }
  if (physics.playerPos.y > height) {
    physics.playerPos.y = 0;
  }
  if (physics.playerPos.y < 0) {
    physics.playerPos.y = height;
  }
​
  text("?", flyPos.x, flyPos.y);
​
  if (PVector.dist(physics.playerPos, flyPos) < 50) {
    eatFly();
  }
​
  textSize(20);
  fill(255);
  if (score > goal)
    fill(255, 200, 0);
  text("Score: " + score + "/" + goal, 100, 50);
}
​
void keyPressed() {
  if ((key == ' ' || key == 'w') && abs(physics.playerPos.y - ground) < 10) {
    physics.addForce(0, -30);
  }
  if (key == 'a') {
    physics.addForce(-10, 0);
  }
  if (key == 'd') {
    physics.addForce(10, 0);
  }
}
​
boolean groundCollisionDetection() {
  if (isOnGround() && physics.playerVel.y > 0) {
    return true;
  }
  return false;
}
​
void groundCollisionResponse(boolean _collisionDetected) {
  if (_collisionDetected)
    physics.bounce();
}
​
boolean isOnGround() {
  return physics.playerPos.y > ground;
}
​
PVector randomPos() {
  return new PVector(random(width), random(ground));
}
​
void eatFly() {
  flyPos = randomPos();
  score++;
}
​
class Physics {
  PVector playerPos;
  PVector playerVel;
  float weight, friction;
​
  Physics(float _xPos, _yPos, float _weight, float _friction) {
    playerPos = new PVector(_xPos, _yPos);
    playerVel = new PVector(0, 0);
    weight = _weight;
    friction = _friction;
  }
​
  void update() {
    if (isOnGround())
      playerVel.x *= friction;
    playerPos.add(playerVel);
​
  }
​
  void gravity() {
    addForce(0, .8);
  }
​
  void bounce() {
    playerVel.y = -1 * abs(playerVel.y) / weight;
    update();
  }
​
  void addForce(float x, y) {
    playerVel.add(new PVector(x, y));
  }
​
}