Limit velocity change from click, add position: fixed so this finally works on mobile

script.js

@@ -202,7 +202,7 @@ function tick() {
 // Use click to update velocities
 function updatev(event) {
 	for (a of A) {
-		let d = ds(a, {x: event.clientX, y: event.clientY})
+		let d = Math.max(ds(a, {x: event.clientX, y: event.clientY}), 100)
 		a.vx += 100 * (a.x - event.clientX) / d
 		a.vy += 100 * (a.y - event.clientY) / d
 	}

style.css

@@ -1,4 +1,5 @@
 body {
+	position: fixed;
 	overflow: hidden;
 	touch-action: none;
 }