let obstacles = [];

let score = 0;

let gameSpeed = 6;

​

function setup() {

  createCanvas(600, 400);

  dino = new Dino();

}

​

function draw() {

  background(255);

  // Display the score

  textSize(20);

  text("Score: " + score, 500, 30);

  // Generate obstacles randomly

  if (frameCount % 60 === 0) {

    obstacles.push(new Obstacle());

  }

  // Update and display the obstacles

  for (let i = obstacles.length - 1; i >= 0; i--) {

    obstacles[i].update();

    obstacles[i].show();

    // If the obstacle hits the dino, end the game

    if (obstacles[i].hits(dino)) {

      console.log("Game over!");

      noLoop();

    }

    // Remove the obstacle from the array if it's off screen

    if (obstacles[i].offscreen()) {

      obstacles.splice(i, 1);

      score++;

    }

  }

  // Update and display the dino

  dino.update();

  dino.show();

}

​

function keyPressed() {

  // Jump when space key is pressed

  if (key === " " && dino.isOnGround()) {

    dino.jump();

  }

}

​

// Define the Obstacle constructor function

function Obstacle() {

  this.width = 20;

  this.height = 50;

  this.x = width;

  this.y = height - this.height;

  this.velocity = gameSpeed;

  // Update the obstacle's position

  this.update = function() {

    this.x -= this.velocity;

  }

  // Display the obstacle on the screen

  this.show = function() {

    fill(0);

    rect(this.x, this.y, this.width, this.height);

  }

  // Check if the obstacle hits the dino

  this.hits = function(dino) {

    return collideRectRect(this.x, this.y, this.width, this.height, 

                           dino.x, dino.y, dino.width, dino.height);

  }

  // Check if the obstacle is off screen

  this.offscreen = function() {

    return this.x < -this.width;

  }

}

​

// Define the Dino constructor function

function Dino() {

  this.x = 50;

  this.y = height - 50;

  this.width = 40;

  this.height = 50;

  this.velocity = 0;

  this.gravity = 0.6;

  // Check if the dino is on the ground

  this.isOnGround = function() {

    return this.y === height - this.height;

  }

  // Jump when space key is pressed

  this.jump = function() {

    if (this.isOnGround()) {

      this.velocity = -15;

    }

  }

  // Update the dino's position and velocity

  this.update = function() {

    this.velocity += this.gravity;

    this.y += this.velocity;

    // Keep the dino on the ground

    if (this.y > height - this.height) {

      this.y = height - this.height;

      this.velocity = 0;

    }

  }

  // Display the dino on the screen

  this.show = function() {

    fill(0);

    rect(this.x, this.y, this.width, this.height);

  }

}

​

​