From 76f9e9d173c61c41e3072934aafe20612838c4df Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom@tomsmeding.com>
Date: Sun, 18 Feb 2024 12:34:26 +0100
Subject: let/const

---
 game.js | 58 +++++++++++++++++++++++++++++-----------------------------
 1 file changed, 29 insertions(+), 29 deletions(-)

diff --git a/game.js b/game.js
index e34f4c2..08baa51 100644
--- a/game.js
+++ b/game.js
@@ -1,15 +1,15 @@
 "use strict";
 
-var boardRatio = 1.5;
-var ballRadius = 0.01, padWidth = 0.01, padHeight = 0.15, padX = 0.01;
-var padBaseSpeed = 0.8;
+const boardRatio = 1.5;
+const ballRadius = 0.01, padWidth = 0.01, padHeight = 0.15, padX = 0.01;
+const padBaseSpeed = 0.8;
 
-var gameId;
-var cvs, ctx, cvsW, cvsH, bdW, bdH, bdltX, bdltY;
-var socket;
-var playing = false, flip = false;
-var ballX, ballY, ballVX, ballVY;
-var padPos, padVel, pad2Pos, pad2Vel;
+let gameId;
+let cvs, ctx, cvsW, cvsH, bdW, bdH, bdltX, bdltY;
+let socket;
+let playing = false, flip = false;
+let ballX, ballY, ballVX, ballVY;
+let padPos, padVel, pad2Pos, pad2Vel;
 
 function redraw() {
 	ctx.fillStyle = "#000000";
@@ -60,7 +60,7 @@ function undrawElements() {
 }
 
 function resizeHandler() {
-	var rect = cvs.getBoundingClientRect();
+	const rect = cvs.getBoundingClientRect();
 	cvsW = cvs.width = rect.width;
 	cvsH = cvs.height = rect.height;
 	// I believe this stuff is correct.
@@ -172,7 +172,7 @@ function openGame() {
 	socket.emit("open", gameId);
 }
 
-var graphicsLoopId = null, loopPhysics = false;
+let graphicsLoopId = null, loopPhysics = false;
 
 function startGraphicsLoop() {
 	// undrawElements();
@@ -196,7 +196,7 @@ function startPhysicsLoop() {
 		}
 
 		const now = performance.now();
-		var info = advancePhysics((now - prev) / 1e3);
+		const info = advancePhysics((now - prev) / 1e3);
 		prev = now;
 
 		if (info.bounce || info.otherBounce) {
@@ -233,14 +233,14 @@ function initPhysics() {
 
 // Returns {bounce, otherBounce, ourSide : Bool}
 function advancePhysics(deltaT) {
-	var ret = {bounce: false, otherBounce: false, ourSide: false};
+	const ret = {bounce: false, otherBounce: false, ourSide: false};
 
-	var newballX = ballX + ballVX * deltaT;
-	var newballY = ballY + ballVY * deltaT;
-	var newpadPos = padPos + padVel * deltaT;
-	var newpad2Pos = pad2Pos + pad2Vel * deltaT;
+	let newballX = ballX + ballVX * deltaT;
+	let newballY = ballY + ballVY * deltaT;
+	const newpadPos = padPos + padVel * deltaT;
+	const newpad2Pos = pad2Pos + pad2Vel * deltaT;
 
-	var t;
+	let t;
 	if (newballY <= ballRadius) {
 		t = (ballRadius - ballY) / ballVY;
 	} else if (newballY >= 1 - ballRadius) {
@@ -282,15 +282,15 @@ function advancePhysics(deltaT) {
 	return ret;
 }
 
-var soundMap = {};
+const soundMap = {};
 
 function preloadSounds() {
-	var names = ["bounce", "leave", "ready", "start", "join", "miss", "score"];
-	var types = [["audio/ogg", "ogg"], ["audio/mpeg", "mp3"], ["audio/wav", "wav"]];
-	for (var i = 0; i < names.length; i++) {
-		var audio = new Audio();
-		for (var j = 0; j < types.length; j++) {
-			var source = document.createElement("source");
+	const names = ["bounce", "leave", "ready", "start", "join", "miss", "score"];
+	const types = [["audio/ogg", "ogg"], ["audio/mpeg", "mp3"], ["audio/wav", "wav"]];
+	for (let i = 0; i < names.length; i++) {
+		const audio = new Audio();
+		for (let j = 0; j < types.length; j++) {
+			const source = document.createElement("source");
 			source.type = types[j][0];
 			source.src = "/snd/" + names[i] + "." + types[j][1];
 			audio.appendChild(source);
@@ -300,10 +300,10 @@ function preloadSounds() {
 	}
 }
 
-var lastSoundStampMap = {};
+const lastSoundStampMap = {};
 
 function playSound(name) {
-	var now = performance.now();
+	const now = performance.now();
 	console.log("playSound(\"" + name + "\")");
 	if (lastSoundStampMap[name] == null || now - lastSoundStampMap[name] >= 500) {
 		soundMap[name].play();
@@ -312,7 +312,7 @@ function playSound(name) {
 }
 
 function setupBindings() {
-	var up = false, down = false;
+	let up = false, down = false;
 
 	function padUpdate() {
 		padVel = (down - up) * padBaseSpeed;
@@ -347,7 +347,7 @@ window.addEventListener("load", function() {
 	openGame();
 });
 
-var resizeDebounceTimeout = null;
+let resizeDebounceTimeout = null;
 window.addEventListener("resize", function() {
 	if (resizeDebounceTimeout != null) return;
 	resizeDebounceTimeout = setTimeout(function() {
-- 
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