Merge branch 'jspong' into server

frontend/static/js/index.js

@@ -6,6 +6,9 @@ import Chat from "./views/Chat.js";
 import HomeView from "./views/HomeView.js";
 import RegisterView from "./views/accounts/RegisterView.js";
 import LogoutView from "./views/accounts/LogoutView.js";
+import GameView from "./views/Game.js"
+
+
 import AbstractRedirectView from "./views/AbstractRedirectView.js";
 import MeView from "./views/MeView.js";
 import ProfilePageView from "./views/profiles/ProfilePageView.js";
@@ -44,6 +47,7 @@ const router = async (uri) => {
         { path: "/home", view: HomeView },
         { path: "/me", view: MeView },
         { path: "/matchmaking", view: MatchMakingView },
+        { path: "/game", view: GameView },
     ];
 
     // Test each route for potential match

frontend/static/js/views/Game.js

@@ -0,0 +1,250 @@
+import AbstractView from './AbstractView.js'
+
+export default class extends AbstractView {
+	constructor(params) {
+		super(params, 'Game');
+		this.game = null;
+	}
+
+	async getHtml() {
+		return `
+			<h1>Game</h1>
+			<button id='startGameButton'>Start Game</button>
+			<button id='stopGameButton'>Stop Game</button>
+		`;
+	}
+
+	async postInit() {
+		document.getElementById('startGameButton').onclick = this.startGame.bind(this);
+		document.getElementById('stopGameButton').onclick = this.stopGame.bind(this);
+	}
+
+	startGame() {
+		if (this.game == null) {
+			document.getElementById('startGameButton').innerHTML = 'Reset Game';
+			this.game = new Game;
+		}
+		else {
+			document.getElementById('app').removeChild(this.game.canvas);
+			this.game.cleanup();
+			this.game = new Game;
+		}
+	}
+
+	stopGame() {
+		if (!this.game)
+			return;
+		document.getElementById('app').removeChild(this.game.canvas);
+		document.getElementById('app').removeChild(this.game.scoresDisplay);
+		this.game.cleanup();
+		this.game = null;
+		document.getElementById('startGameButton').innerHTML = 'Start Game';
+	}
+}
+
+class Game {
+	constructor() {
+		//Global variables
+		this.def = {
+			CANVASHEIGHT: 270,
+			CANVASWIDTH: 480,
+			PADDLEHEIGHT: 70,
+			PADDLEWIDTH: 10,
+			PADDLEMARGIN: 5,
+			PADDLESPEED: 3,
+			BALLRADIUS: 5,
+			BALLSPEED: 2,
+			BALLSPEEDINCR: 0.15,
+			MAXBOUNCEANGLE: 10 * (Math.PI / 12),
+			MAXSCORE: 6
+		};
+
+		this.canvas = document.createElement('canvas');
+		this.canvas.id = 'gameCanvas';
+		this.canvas.width = this.def.CANVASWIDTH;
+		this.canvas.height = this.def.CANVASHEIGHT;
+		this.canvas.style.border = '1px solid #d3d3d3';
+		this.canvas.style.backgroundColor = '#f1f1f1';
+		this.context = this.canvas.getContext('2d');
+		document.getElementById('app').appendChild(this.canvas);
+		this.scoresDisplay = document.createElement('p');
+		this.scoresDisplay.innerHTML = 'Scores: 0 - 0';
+		document.getElementById('app').appendChild(this.scoresDisplay);
+
+		this.players = [
+			{
+				paddle: new Paddle(this.context,
+							this.def.PADDLEMARGIN,
+							this.def),
+				score: 0
+			},
+			{
+				paddle: new Paddle(this.context,
+							this.def.CANVASWIDTH - this.def.PADDLEMARGIN - this.def.PADDLEWIDTH,
+							this.def),
+				score: 0
+			}
+		];
+		this.ballStartSide = 0;
+		this.ballRespawned = false;
+		this.ball = new Ball(this.context, this.def, this.ballStartSide);
+
+		this.interval = setInterval(this.updateGame.bind(this), 10);
+
+		this.keys = [];
+		this.keyUpHandler = this.keyUpHandler.bind(this);
+		this.keyDownHandler = this.keyDownHandler.bind(this);
+		document.addEventListener('keydown', this.keyDownHandler);
+		document.addEventListener('keyup', this.keyUpHandler);
+	}
+
+	cleanup() {
+		clearInterval(this.interval);
+		document.removeEventListener('keydown', this.keyDownHandler);
+		document.removeEventListener('keyup', this.keyUpHandler);
+		this.canvas.style.display = 'none';
+	}
+
+	clear() {
+		this.context.clearRect(0, 0, this.canvas.width, this.canvas.height);
+	}
+
+	updateGame() {
+		//Paddle movement
+		if (this.keys.includes('s') &&
+			this.players[0].paddle.y + this.def.PADDLEHEIGHT < this.def.CANVASHEIGHT - this.def.PADDLEMARGIN)
+				this.players[0].paddle.y += this.def.PADDLESPEED;
+		if (this.keys.includes('w') &&
+			this.players[0].paddle.y > 0 + this.def.PADDLEMARGIN)
+				this.players[0].paddle.y -= this.def.PADDLESPEED;
+
+		if (this.keys.includes('ArrowDown') &&
+			this.players[1].paddle.y + this.def.PADDLEHEIGHT < this.def.CANVASHEIGHT - this.def.PADDLEMARGIN)
+				this.players[1].paddle.y += this.def.PADDLESPEED;
+		if (this.keys.includes('ArrowUp') &&
+			this.players[1].paddle.y > 0 + this.def.PADDLEMARGIN)
+				this.players[1].paddle.y -= this.def.PADDLESPEED;
+
+		//GOOAAAAL
+		if (this.ball.x <= 0)
+			this.updateScore(this.players[0].score, ++this.players[1].score);
+		else if (this.ball.x >= this.def.CANVASWIDTH)
+			this.updateScore(++this.players[0].score, this.players[1].score);
+
+		//Ball collisions
+		if (this.detectCollision(this.players[0].paddle, this.ball))
+			this.calculateBallVelocity(this.players[0].paddle.getCenter().y, this.ball);
+		else if (this.detectCollision(this.players[1].paddle, this.ball))
+			this.calculateBallVelocity(this.players[1].paddle.getCenter().y, this.ball, -1);
+
+		if (this.ball.y - this.ball.radius <= 0)
+			this.ball.vy *= -1;
+		else if (this.ball.y + this.ball.radius >= this.canvas.height)
+			this.ball.vy *= -1;
+
+		if (!this.ballRespawned) {
+			this.ball.x += this.ball.vx;
+			this.ball.y += this.ball.vy;
+		}
+
+		this.clear();
+		this.players[0].paddle.update();
+		this.players[1].paddle.update();
+		this.ball.update();
+	}
+
+	updateScore(p1Score, p2Score) {
+		if (p1Score > this.def.MAXSCORE) {
+			this.scoresDisplay.innerHTML = 'Player 1 wins!! GGS';
+			this.cleanup();
+		}
+		else if (p2Score > this.def.MAXSCORE) {
+			this.scoresDisplay.innerHTML = 'Player 2 wins!! GGS';
+			this.cleanup();
+		} else {
+			this.scoresDisplay.innerHTML = `Scores: ${p1Score} - ${p2Score}`;
+			this.ballStartSide = 1 - this.ballStartSide;
+			this.ball = new Ball(this.context, this.def, this.ballStartSide);
+			this.ballRespawned = true;
+			new Promise(r => setTimeout(r, 300))
+				.then(_ => this.ballRespawned = false);
+		}
+	}
+
+	detectCollision(paddle, ball) {
+		let paddleCenter = paddle.getCenter();
+		let dx = Math.abs(ball.x - paddleCenter.x);
+		let dy = Math.abs(ball.y - paddleCenter.y);
+		if (dx <= ball.radius + paddle.width / 2 &&
+			dy <= ball.radius + paddle.height / 2)
+				return true;
+		return false;
+	}
+
+	calculateBallVelocity(paddleCenterY, ball, side = 1) {
+		let relativeIntersectY = paddleCenterY - ball.y;
+		let normRelIntersectY = relativeIntersectY / this.def.PADDLEHEIGHT / 2;
+		let bounceAngle = normRelIntersectY * this.def.MAXBOUNCEANGLE;
+
+		ball.speed += this.def.BALLSPEEDINCR;
+		ball.vx = ball.speed * side * Math.cos(bounceAngle);
+		ball.vy = ball.speed * -Math.sin(bounceAngle);
+	}
+
+	keyUpHandler(ev) {
+		const idx = this.keys.indexOf(ev.key);
+		if (idx != -1)
+			this.keys.splice(idx, 1);
+	}
+
+	keyDownHandler(ev) {
+		if (!this.keys.includes(ev.key))
+			this.keys.push(ev.key);
+	}
+}
+
+class Paddle {
+	constructor(context, paddleSide, def) {
+		this.width = def.PADDLEWIDTH;
+		this.height = def.PADDLEHEIGHT;
+		this.x = paddleSide;
+		this.y = def.CANVASHEIGHT / 2 - this.height / 2;
+		this.ctx = context;
+		this.update();
+	}
+
+	update() {
+		this.ctx.fillStyle = 'black';
+		this.ctx.fillRect(this.x, this.y, this.width, this.height);
+	}
+
+	getCenter() {
+		return {
+			x: this.x + this.width / 2,
+			y: this.y + this.height / 2
+		};
+	}
+}
+
+class Ball {
+	constructor(context, def, startSide) {
+		this.radius = def.BALLRADIUS;
+		this.speed = def.BALLSPEED;
+		this.x = def.CANVASWIDTH / 2;
+		this.y = def.CANVASHEIGHT / 2;
+		this.vy = 0;
+		if (startSide === 0)
+			this.vx = -this.speed;
+		else
+			this.vx = this.speed;
+		this.ctx = context;
+		this.update();
+	}
+
+	update() {
+		this.ctx.fillStyle = 'black';
+		this.ctx.beginPath();
+		this.ctx.arc(this.x, this.y, this.radius, 0, 2 * Math.PI);
+		this.ctx.fill();
+	}
+}