touchscreen input no longer buffers

src/js/main.js

@@ -90,11 +90,10 @@
 			}
 		};
 		currentGame=snek;
-		//XXX
-		window.snek=snek;
 	});
 
 	window.addEventListener('keydown', async e => {
+		e.preventDefault();
 		if(e.key=='f') {
 			if(document.fullscreenElement) await document.exitFullscreen();
 			else await main.requestFullscreen();
@@ -108,7 +107,8 @@
 		else if(e.key=='ArrowRight') inputs.right=true;
 	});
 
-	window.addEventListener('touchstart', e => {
+	const handleTouch=e => {
+		e.preventDefault();
 		let x=e.touches[0].clientX/window.innerWidth-.5;
 		let y=e.touches[0].clientY/window.innerHeight-.5;
 		const angle=((Math.atan2(x, y)+2*Math.PI)%(2*Math.PI))/Math.PI;
@@ -118,6 +118,10 @@
 		else if(angle>.75 && angle<1.25) inputs.up=true;
 		else if(angle>1.25 && angle<1.75) inputs.left=true;
 		else inputs.down=true;
-	});
+
+		inputs.clearBuffer=true;
+	};
+	window.addEventListener('touchstart', handleTouch);
+	window.addEventListener('touchmove', handleTouch);
 
 })();

src/js/snek.js

@@ -322,6 +322,12 @@ class SnekGame {
 		else if(inputs.right && trySet([ 1, 0])) return delete inputs.right;
 		else if(inputs.up && trySet([ 0,-1])) return delete inputs.up;
 		else if(inputs.down &&  trySet([ 0, 1])) return delete inputs.down;
+
+		if(inputs.clearBuffer) {
+			Object
+				.keys(inputs)
+				.forEach(k => delete inputs[k]);
+		}
 	}
 
 	start() {