 <!DOCTYPE html>
<html>
<head>
  <title>Basic Doodle Jump HTML Game</title>
  <meta charset="UTF-8">
  <style>
    html, body {
      height: 100%;
      margin: 0;
    }

    body {
      display: flex;
      align-items: center;
      justify-content: center;
    }

    canvas {
      border: 1px solid black;
      display: none; /* Hidden by default */
      background: linear-gradient(to bottom, #87CEEB, #f0f8ff); /* Sky-like gradient */
    }

    /* Game Over and Play Screens Style */
    #game-over, #play-screen {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: rgba(0, 0, 0, 0.8);
      color: white;
      padding: 20px;
      text-align: center;
      border-radius: 10px;
    }

    #game-over {
      display: none; /* Hidden by default */
    }
  </style>
</head>
<body>
<canvas width="375" height="667" id="game"></canvas>

<!-- Play Screen -->
<div id="play-screen">
  <h1>Doodle Jump</h1>
  <button id="play">Play</button>
</div>

<!-- Game Over Screen -->
<div id="game-over">
  <h1>Game Over</h1>
  <p>Your score is: <span id="score"></span></p>
  <button id="restart">Restart</button>
</div>

<script>
const canvas = document.getElementById('game');
const context = canvas.getContext('2d');

// width and height of each platform and where platforms start
const platformWidth = 65;
const platformHeight = 20;
const platformStart = canvas.height - 50;

// player physics
const gravity = 0.33;
const drag = 0.3;
const bounceVelocity = -12.5;

// minimum and maximum vertical space between each platform
let minPlatformSpace = 15;
let maxPlatformSpace = 20;

// variables to store game state
let platforms = [];
let doodle = {};
let playerDir = 0;
let keydown = false;
let prevDoodleY = 0;
let gameOver = false; // Track game over state
let score = 0; // Initialize score

const gameOverScreen = document.getElementById('game-over');
const playScreen = document.getElementById('play-screen');
const scoreDisplay = document.getElementById('score');
const playButton = document.getElementById('play');
const restartButton = document.getElementById('restart');

// Function to reset the game state
function resetGame() {
  // Reset doodle and platforms
  platforms = [{
    x: canvas.width / 2 - platformWidth / 2,
    y: platformStart
  }];
  
  doodle = {
    width: 40,
    height: 60,
    x: canvas.width / 2 - 20,
    y: platformStart - 60,
    dx: 0,
    dy: 0
  };

  // Refill the screen with platforms
  let y = platformStart;
  while (y > 0) {
    y -= platformHeight + random(minPlatformSpace, maxPlatformSpace);
    let x = random(25, canvas.width - 25 - platformWidth);
    platforms.push({ x, y });
  }

  // Reset game variables
  playerDir = 0;
  keydown = false;
  prevDoodleY = doodle.y;
  gameOver = false;
  score = 0;
}

// Get a random number between the min (inclusive) and max (exclusive)
function random(min, max) {
  return Math.random() * (max - min) + min;
}

// Game loop
function loop() {
  if (!gameOver) {
    requestAnimationFrame(loop);
    context.clearRect(0, 0, canvas.width, canvas.height);

    // Apply gravity to doodle
    doodle.dy += gravity;

    if (doodle.y < canvas.height / 2 && doodle.dy < 0) {
      platforms.forEach(function(platform) {
        platform.y += -doodle.dy;
      });

      while (platforms[platforms.length - 1].y > 0) {
        platforms.push({
          x: random(25, canvas.width - 25 - platformWidth),
          y: platforms[platforms.length - 1].y - (platformHeight + random(minPlatformSpace, maxPlatformSpace))
        });

        minPlatformSpace += 0.5;
        maxPlatformSpace += 0.5;
        maxPlatformSpace = Math.min(maxPlatformSpace, canvas.height / 2);
      }
    } else {
      doodle.y += doodle.dy;
    }

    if (!keydown) {
      if (playerDir < 0) {
        doodle.dx += drag;
        if (doodle.dx > 0) {
          doodle.dx = 0;
          playerDir = 0;
        }
      } else if (playerDir > 0) {
        doodle.dx -= drag;
        if (doodle.dx < 0) {
          doodle.dx = 0;
          playerDir = 0;
        }
      }
    }

    doodle.x += doodle.dx;

    if (doodle.x + doodle.width < 0) {
      doodle.x = canvas.width;
    } else if (doodle.x > canvas.width) {
      doodle.x = -doodle.width;
    }

    context.fillStyle = 'green';
    platforms.forEach(function(platform) {
      drawPlatform(platform.x, platform.y);
      if (
        doodle.dy > 0 &&
        prevDoodleY + doodle.height <= platform.y &&
        doodle.x < platform.x + platformWidth &&
        doodle.x + doodle.width > platform.x &&
        doodle.y < platform.y + platformHeight &&
        doodle.y + doodle.height > platform.y
      ) {
        doodle.y = platform.y - doodle.height;
        doodle.dy = bounceVelocity;
      }
    });

    // Draw doodle with gradient
    drawDoodle(doodle.x, doodle.y, doodle.width, doodle.height);
    prevDoodleY = doodle.y;

    // Check for game over condition
    if (doodle.y > canvas.height) {
      gameOver = true;
      scoreDisplay.textContent = score; // Display score
      gameOverScreen.style.display = 'block'; // Show game over screen
    }

    score = Math.floor(doodle.y / 10); // Update score
    platforms = platforms.filter(function(platform) {
      return platform.y < canvas.height;
    });
  }
}

// Draw the doodle with a gradient fill
function drawDoodle(x, y, width, height) {
  const gradient = context.createLinearGradient(x, y, x, y + height);
  gradient.addColorStop(0, 'yellow');
  gradient.addColorStop(1, 'orange');
  context.fillStyle = gradient;
  
  // Draw the doodle as a simple circle
  context.beginPath();
  context.arc(x + width / 2, y + height / 2, width / 2, 0, Math.PI * 2);
  context.fill();

  // Add a simple shadow
  context.shadowColor = 'rgba(0,0,0,0.5)';
  context.shadowBlur = 15;
  context.shadowOffsetX = 3;
  context.shadowOffsetY = 3;
}

// Draw platforms with a shadow and round edges
function drawPlatform(x, y) {
  context.fillStyle = 'green';
  context.shadowColor = 'rgba(0, 0, 0, 0.2)';
  context.shadowBlur = 10;
  context.shadowOffsetX = 2;
  context.shadowOffsetY = 2;

  // Draw rounded platforms
  context.beginPath();
  context.roundRect(x, y, platformWidth, platformHeight, 10); // Rounded corners
  context.fill();
}

// Listen to keyboard events to move doodle
document.addEventListener('keydown', function(e) {
  if (gameOver) return; // Do nothing if game is over
  if (e.which === 37) {
    keydown = true;
    playerDir = -1;
    doodle.dx = -3;
  } else if (e.which === 39) {
    keydown = true;
    playerDir = 1;
    doodle.dx = 3;
  }
});

document.addEventListener('keyup', function(e) {
  keydown = false;
});

// Play button to start the game
playButton.addEventListener('click', function() {
  playScreen.style.display = 'none'; // Hide the play screen
  canvas.style.display = 'block'; // Show the canvas
  resetGame(); // Reset game state
  requestAnimationFrame(loop); // Start the game loop
});

// Restart the game
restartButton.addEventListener('click', function() {
  gameOverScreen.style.display = 'none'; // Hide game over screen
  resetGame(); // Reset the game state
  requestAnimationFrame(loop); // Restart the game loop
});

// Add support for roundRect
CanvasRenderingContext2D.prototype.roundRect = function (x, y, w, h, r) {
  if (w < 2 * r) r = w / 2;
  if (h < 2 * r) r = h / 2;
  this.beginPath();
  this.moveTo(x + r, y);
  this.arcTo(x + w, y, x + w, y + h, r);
  this.arcTo(x + w, y + h, x, y + h, r);
  this.arcTo(x, y + h, x, y, r);
  this.arcTo(x, y, x + w, y, r);
  this.closePath();
  return this;
}
</script>
</body>
</html>

created 1 year ago

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