added quick restart and crosspad grid

assets/config.json

@@ -1,7 +1,7 @@
 {
 	"touchscreen": {
 		"enabled": true,
-		"mode": "swipe",
+		"mode": "crosspad",
 		"deadzone": 50,
 		"buffer": false
 	},

public/index.html

@@ -19,6 +19,7 @@
 		<main>
 			<nav></nav>
 			<canvas class="hidden"></canvas>
+			<div id="hud" class="hidden"></div>
 		</main>
 		<footer>
 			<img src="assets/icon32.png">

src/js/input.js

@@ -1,6 +1,7 @@
 let currentInputs={};
 let handlers=[];
 let config;
+let hud;
 
 const toAngleMagnitude=(x, y) => {
 	return {
@@ -25,6 +26,26 @@ const handleAngleMagnitude=(x, y, threshold=0, fn=null, clearBuffer=false) => {
 }
 
 const handleCrosspad=(() => {
+	const ns='http://www.w3.org/2000/svg';
+	const cross=document.createElementNS(ns, 'svg');
+	cross.classList.add('crosspadOverlay');
+	cross.setAttribute('width', 1000);
+	cross.setAttribute('height', 1000);
+	let dr=document.createElementNS(ns, 'line');
+	dr.setAttribute('x1', 0);
+	dr.setAttribute('y1', 0);
+	dr.setAttribute('x2', 1000);
+	dr.setAttribute('y2', 1000);
+	dr.setAttribute('stroke', 'black');
+	cross.appendChild(dr);
+	let dl=document.createElementNS(ns, 'line');
+	dl.setAttribute('x1', 1000);
+	dl.setAttribute('y1', 0);
+	dl.setAttribute('x2', 0);
+	dl.setAttribute('y2', 1000);
+	dl.setAttribute('stroke', 'black');
+	cross.appendChild(dl);
+
 	const fn=e =>
 		handleAngleMagnitude(
 			e.touches[0].clientX-window.innerWidth/2,
@@ -35,7 +56,9 @@ const handleCrosspad=(() => {
 		);
 	return {
 		touchstart: fn,
-		touchmove: fn
+		touchmove: fn,
+		init: () => hud.appendChild(cross),
+		fini: () => hud.removeChild(cross)
 	};
 })();
 
@@ -118,15 +141,23 @@ const handleEvent=(type, evt) => {
 };
 
 const enableHandler=handler => {
-	if(!handlers.includes(handler)) handlers.push(handler);
+	if(!handlers.includes(handler)) {
+		handlers.push(handler);
+		if(handler.init) handler.init();
+	}
 };
 const disableHandler=handler => {
 	let idx=handlers.indexOf(handler);
-	if(idx!=-1) handlers.splice(idx, 1);
+	if(idx!=-1) {
+		handlers.splice(idx, 1);
+		if(handler.fini) handler.fini();
+	}
 };
 
 const updateConfig=cfg =>
 	config=cfg;
+const setHud=elem =>
+	hud=elem;
 
 const clear=() =>
 	Object
@@ -149,5 +180,5 @@ return module.exports={
 		touchscreenJoystick: handleJoystick,
 		touchscreenSwipe: handleSwipe
 	},
-	updateConfig
+	updateConfig, setHud
 };

src/js/main.js

@@ -15,6 +15,7 @@
 	const main=document.querySelector('main');
 	const nav=main.querySelector('nav');
 	const canvas=main.querySelector('canvas');
+	const hud=main.querySelector('#hud');
 
 	// load config
 	const config=assets.get('config'); //TODO use an actual config module
@@ -26,7 +27,7 @@
 	let currentGame=null;
 
 	// forward-declare functions
-	let resizeCanvas, getLevel, startGame, handleWin, handleDeath, menu, help;
+	let resizeCanvas, getLevel, startGame, handleWin, handleDeath, menu, help, restart;
 
 	// handle window resize and fullscreen
 	resizeCanvas=() => {
@@ -119,6 +120,7 @@
 		// setup the DOM
 		nav.classList.add('hidden');
 		canvas.classList.remove('hidden');
+		hud.classList.remove('hidden');
 
 		// push some userdata to the snake
 		snek.userdata={
@@ -142,12 +144,13 @@
 		// setup the DOM
 		nav.classList.remove('hidden');
 		canvas.classList.add('hidden');
+		hud.classList.add('hidden');
 	};
 
 	// display the win popup
 	handleWin=async snek => {
-		// get userdata back
-		const {category, levelId, filename}=snek.userdata;
+		// hide the HUD
+		hud.classList.add('hidden');
 
 		// create and configure popup
 		let popup=new Popup("Finished!");
@@ -171,10 +174,11 @@
 
 		// act on it
 		if(result=='retry') {
-			startGame(category, levelId, filename);
+			restart();
 		} else if(result=='menu') {
 			location.hash='menu';
 		} else if(result=='next') {
+			const {category, levelId}=snek.userdata;
 			let nextId=(+levelId)+1;
 			let {levelString}=getLevel(category, nextId)
 			location.hash=levelString;
@@ -183,8 +187,8 @@
 
 	// display the death popup
 	handleDeath=async snek => {
-		// get userdata back
-		const {category, levelId, filename}=snek.userdata;
+		// hide the HUD
+		hud.classList.add('hidden');
 
 		// create and configure popup
 		let popup=new Popup("Finished!");
@@ -204,12 +208,29 @@
 
 		// act on it
 		if(result=='retry') {
-			startGame(category, levelId, filename);
+			restart();
 		} else if(result=='menu') {
 			location.hash='menu';
 		}
 	};
 
+	// quick restart
+	restart=() => {
+		if(currentGame && currentGame.playing) {
+			const {category, levelId, filename}=currentGame.userdata;
+			startGame(category, levelId, filename);
+		}
+	}
+	window.addEventListener('keydown', e => {
+		if(e.key=='r') restart();
+	});
+	(() => {
+		let restartbtn=hud.appendChild(document.createElement('span'));
+		restartbtn.classList.add('restart');
+		restartbtn.addEventListener('click', restart);
+		restartbtn.addEventListener('touchend', restart);
+	})();
+
 	// handle page navigation
 	window.addEventListener('hashchange', () => {
 		const hash=location.hash.substr(1);
@@ -222,6 +243,7 @@
 	});
 
 	// enable input methods according to config
+	input.setHud(hud);
 	if(config.keyboard.enabled) {
 		input.enableHandler(input.availableHandlers.keyboard);
 	}

src/less/hud.less

@@ -0,0 +1,34 @@
+#hud {
+	position: fixed;
+	top: 0;
+	left: 0;
+	width: 100vw;
+	height: 100vh;
+
+	pointer-events: none;
+
+	& > * {
+		position: fixed;
+		pointer-events: auto;
+	}
+
+	.restart {
+		top: 0;
+		right: 0;
+
+		&::before {
+			content: '⟳';
+			font-size: 3rem;
+			opacity: .5;
+			color: @accentfg;
+		}
+	}
+
+	.crosspadOverlay {
+		pointer-events: none;
+		top: 50vh;
+		left: 50vw;
+		transform: translate(-50%, -50%);
+		opacity: .5;
+	}
+}

src/less/snek.less

@@ -105,3 +105,5 @@ p {
 // setup the popups
 @import 'popup';
 
+// setup the hud
+@import 'hud';