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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Flappy Bird</title>
<style>
body {
margin: 0;
overflow: hidden;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
background-color: #70c5ce;
}
canvas {
border: 2px solid #333;
}
</style>
</head>
<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.4.0/p5.js"></script>
<script>
let bird;
let pipes = [];
let gameState = 0; // 0: not started, 1: playing, 2: game over
let score = 0;
function setup() {
createCanvas(windowWidth / 2, windowHeight / 1.5);
bird = new Bird();
pipes.push(new Pipe());
}
function draw() {
background(220);
if (gameState === 1) {
for (let i = pipes.length - 1; i >= 0; i--) {
pipes[i].show();
pipes[i].update();
if (pipes[i].hits(bird)) {
gameState = 2; // Game Over
}
if (pipes[i].offscreen()) {
pipes.splice(i, 1);
score++;
}
}
bird.update();
bird.show();
if (frameCount % 100 === 0) {
pipes.push(new Pipe());
}
} else if (gameState === 0) {
fill(0);
textAlign(CENTER);
text("Left click your mouse & Start with space key", width / 2, height / 2);
} else {
fill(255, 0, 0);
textSize(32);
textAlign(CENTER);
text("Game Over", width / 2, height / 2);
text("Score: " + score, width / 2, height / 2 + 40);
}
}
function keyPressed() {
if (key === ' ') {
if (gameState === 0 || gameState === 2) {
pipes = [];
bird = new Bird();
score = 0;
gameState = 1;
} else {
bird.up();
}
}
}
class Bird {
constructor() {
this.y = height / 2;
this.x = 64;
this.gravity = 0.6;
this.lift = -15;
this.velocity = 0;
this.size = 32;
}
show() {
fill(255, 200, 0);
ellipse(this.x, this.y, this.size, this.size);
}
update() {
this.velocity += this.gravity;
this.velocity *= 0.9;
this.y += this.velocity;
if (this.y > height) {
this.y = height;
this.velocity = 0;
}
if (this.y < 0) {
this.y = 0;
this.velocity = 0;
}
}
up() {
this.velocity += this.lift;
}
}
class Pipe {
constructor() {
this.top = random(height / 2);
this.bottom = random(height / 2);
this.x = width;
this.w = 20;
this.speed = 3;
}
show() {
fill(0, 200, 0);
rect(this.x, 0, this.w, this.top);
rect(this.x, height - this.bottom, this.w, this.bottom);
}
update() {
this.x -= this.speed;
}
offscreen() {
return this.x < -this.w;
}
hits(bird) {
if (bird.y < this.top || bird.y > height - this.bottom) {
if (bird.x > this.x && bird.x < this.x + this.w) {
return true;
}
}
return false;
}
}
</script>
</body>
</html> |