Fix velocity clamping to initial

static/js/background_anim.js

@@ -235,11 +235,19 @@ const physics = () => {
         dot.xy *= VELOCITY_SLOWDOWN_MULTIPLIER;
 
         // Stop velocity from going below initial velocity
-        if(dot.vx < dot.initial_vx) {
+        if(Math.abs(dot.vx) < Math.abs(dot.initial_vx)) {
+            if((dot.vx > 0 && dot.initial_vx > 0) || (dot.vx < 0 && dot.initial_vx < 0)) {
                 dot.vx = dot.initial_vx;
+            } else {
+                dot.vx = -dot.initial_vx;
             }
-        if(dot.vy < dot.initial_vy) {
+        }
+        if(Math.abs(dot.vy) < Math.abs(dot.initial_vy)) {
+            if((dot.vy > 0 && dot.initial_vy > 0) || (dot.vy < 0 && dot.initial_vy < 0)) {
                 dot.vy = dot.initial_vy;
+            } else {
+                dot.vy = -dot.initial_vy;
+            }
         }
 
         // Invert velocities if off-screen and not already inverted