retro-asteroids/sketch.js

let ship;
let asteroids = [];
let bullets = [];
let shieldOrb = null;
let greenOrb = null;
let lives = 3;
let score = 0;
let gameOver = false;
let lastShieldSpawn = 0;
let lastGreenSpawn = 0;

function setup() {
  createCanvas(800, 600);
  ship = new Ship();
  for (let i = 0; i < 5; i++) {
    asteroids.push(new Asteroid());
  }
}

function draw() {
  background(0);
  
  if (gameOver) {
    textSize(32);
    fill(255);
    textAlign(CENTER);
    text("Game Over! Score: " + score, width / 2, height / 2);
    text("Press R to Restart", width / 2, height / 2 + 40);
    return;
  }

  // Display lives and score
  textSize(20);
  fill(255);
  text("Lives: " + lives, 50, 30);
  text("Score: " + score, 50, 60);

  // Handle continuous key input (WASD)
  if (keyIsDown(65)) { // A key
    ship.setRotation(-0.1);
  }
  if (keyIsDown(68)) { // D key
    ship.setRotation(0.1);
  }
  if (keyIsDown(87)) { // W key
    ship.boosting(true);
  } else {
    ship.boosting(false);
  }

  // Update and show ship
  ship.update();
  ship.show();
  ship.edges();

  // Spawn shield orb periodically
  if (millis() - lastShieldSpawn > 15000 && !shieldOrb) {
    shieldOrb = new ShieldOrb();
    lastShieldSpawn = millis();
  }

  // Spawn green orb periodically
  if (millis() - lastGreenSpawn > 20000 && !greenOrb) {
    greenOrb = new GreenOrb();
    lastGreenSpawn = millis();
  }

  // Update and show shield orb
  if (shieldOrb) {
    shieldOrb.update();
    shieldOrb.show();
    shieldOrb.edges();
    if (ship.hits(shieldOrb)) {
      ship.activateShield();
      shieldOrb = null;
    }
  }

  // Update and show green orb
  if (greenOrb) {
    greenOrb.update();
    greenOrb.show();
    greenOrb.edges();
    if (ship.hits(greenOrb)) {
      ship.activateQuadShot();
      greenOrb = null;
    }
  }

  // Update and show bullets
  for (let i = bullets.length - 1; i >= 0; i--) {
    bullets[i].update();
    bullets[i].show();
    if (bullets[i].offscreen()) {
      bullets.splice(i, 1);
    }
  }

  // Update and show asteroids
  for (let i = asteroids.length - 1; i >= 0; i--) {
    if (!asteroids[i]) continue; // Skip if asteroid is undefined
    asteroids[i].update();
    asteroids[i].show();
    asteroids[i].edges();

    // Check collision with ship
    if (ship.hits(asteroids[i]) && !ship.shieldActive) {
      lives--;
      if (lives <= 0) {
        gameOver = true;
      } else {
        ship = new Ship(); // Reset ship position
      }
    }

    // Check collision with bullets
    for (let j = bullets.length - 1; j >= 0; j--) {
      if (asteroids[i] && asteroids[i].hits(bullets[j])) {
        let isGolden = asteroids[i].isGolden; // Store before removal
        let newAsteroids = asteroids[i].breakup();
        asteroids.splice(i, 1);
        bullets.splice(j, 1);
        asteroids.push(...newAsteroids);
        score += isGolden ? 20 : 10; // Use stored isGolden value
        break; // Exit bullet loop after collision
      }
    }
  }
}

function keyPressed() {
  if (keyCode === 32) { // Spacebar to shoot
    if (ship.quadShotActive) {
      // Fire in four directions: forward, backward, left, right
      bullets.push(new Bullet(ship.pos, ship.heading));
      bullets.push(new Bullet(ship.pos, ship.heading + PI));
      bullets.push(new Bullet(ship.pos, ship.heading - PI / 2));
      bullets.push(new Bullet(ship.pos, ship.heading + PI / 2));
    } else {
      bullets.push(new Bullet(ship.pos, ship.heading));
    }
  }
  if (keyCode === 82 && gameOver) { // R to restart
    lives = 3;
    score = 0;
    asteroids = [];
    bullets = [];
    shieldOrb = null;
    greenOrb = null;
    ship = new Ship();
    lastShieldSpawn = millis();
    lastGreenSpawn = millis();
    for (let i = 0; i < 5; i++) {
      asteroids.push(new Asteroid());
    }
    gameOver = false;
  }
}

function keyReleased() {
  if (keyCode === 65 || keyCode === 68) { // A or D key
    ship.setRotation(0);
  }
  if (keyCode === 87) { // W key
    ship.boosting(false);
  }
}