Simple HTML Platformer

To create a simple HTML platformer, we will need to use HTML, CSS, and JavaScript.

HTML

First, let's create the basic structure of our platformer using HTML. We will need a canvas element to draw our game on, as well as some buttons to control the player.

<!DOCTYPE html>
<html>
  <head>
    <title>Simple HTML Platformer</title>
    <style>
      canvas {
        border: 1px solid black;
      }
    </style>
  </head>
  <body>
    <canvas id='canvas' width='400' height='300'></canvas>
    <br>
    <button id='left'>Left</button>
    <button id='right'>Right</button>
    <button id='jump'>Jump</button>
  </body>
</html>

CSS

Next, let's style our buttons to make them look nice.

button {
  font-size: 20px;
  padding: 10px 20px;
  margin: 10px;
  border-radius: 5px;
  background-color: #4CAF50;
  color: white;
  border: none;
}

JavaScript

Finally, let's write some JavaScript to make our platformer work. We will need to create a player object, handle player movement, and handle collisions with the game world.

const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');

const player = {
  x: 50,
  y: 50,
  width: 20,
  height: 20,
  speed: 5,
  jumping: false,
  jumpHeight: 100,
  jumpCount: 0
};

function drawPlayer() {
  ctx.fillRect(player.x, player.y, player.width, player.height);
}

function clearCanvas() {
  ctx.clearRect(0, 0, canvas.width, canvas.height);
}

function movePlayer() {
  if (leftPressed && player.x > 0) {
    player.x -= player.speed;
  }
  if (rightPressed && player.x < canvas.width - player.width) {
    player.x += player.speed;
  }
  if (jumpPressed && !player.jumping) {
    player.jumping = true;
  }
  if (player.jumping) {
    player.y -= 5;
    player.jumpCount += 5;
    if (player.jumpCount > player.jumpHeight) {
      player.jumping = false;
      player.jumpCount = 0;
    }
  } else if (player.y < canvas.height - player.height) {
    player.y += 5;
  }
}

function detectCollisions() {
  if (player.y >= canvas.height - player.height) {
    player.y = canvas.height - player.height;
    player.jumping = false;
    player.jumpCount = 0;
  }
}

let leftPressed = false;
let rightPressed = false;
let jumpPressed = false;

document.addEventListener('keydown', event => {
  if (event.code === 'ArrowLeft') {
    leftPressed = true;
  } else if (event.code === 'ArrowRight') {
    rightPressed = true;
  } else if (event.code === 'Space') {
    jumpPressed = true;
  }
});

document.addEventListener('keyup', event => {
  if (event.code === 'ArrowLeft') {
    leftPressed = false;
  } else if (event.code === 'ArrowRight') {
    rightPressed = false;
  } else if (event.code === 'Space') {
    jumpPressed = false;
  }
});

function update() {
  clearCanvas();
  drawPlayer();
  movePlayer();
  detectCollisions();
  requestAnimationFrame(update);
}

update();

Conclusion

And there you have it! A simple HTML platformer using HTML, CSS, and JavaScript. Feel free to customize it and make it your own. Happy coding!

Simple HTML Platformer: Build Your Own Game with HTML, CSS, and JavaScript

Simple HTML Platformer: Build Your Own Game with HTML, CSS, and JavaScript

Simple HTML Platformer

HTML

CSS

JavaScript

Conclusion