Minor cleanups.

js/arc.js

@@ -161,7 +161,8 @@ const Arc = {
     },
 
     evade: function(arc) {
-        arc = Arc.changeRadius(arc, 15);
+        // Randomness here mitigates sticking in corners and between walls.
+        arc = Arc.changeRadius(arc, Random.num(15, 30));
         arc.length = 0.3;
 
         return arc;

js/index.js

@@ -29,11 +29,4 @@ window.addEventListener('load', () => {
 });
 
 // TODO remove bottom padding from Disqus
-// TODO sort out particle nextframe
-
-// INTERESTING CONTROLS:
-// sensitivity
-// rigidity
-// show leaders
-
-// TURN THE CORRECT DIRECTION - HUGE EFFICIENCY INCREASE
+// TODO TURN THE CORRECT DIRECTION - HUGE EFFICIENCY INCREASE

js/particle.js

@@ -210,19 +210,20 @@ function look(arc, grids) {
     const { global, vision } = grids;
 
     return vision.reduce((acc, point) => {
+        point.touch = false;
+
         const x = arc.endX + point.x;
         const y = arc.endY + point.y;
         const p = global.getPoint({ x, y, type: ENTITIES.PARTICLE });
 
         if (p) {
             acc.particles.push(p);
+            point.touch = true;
         }
 
         if (global.getPoint({ x, y, type: ENTITIES.HAZARD })) {
             acc.hazards.push({ x, y });
             point.touch = true;
-        } else {
-            point.touch = false;
         }
 
         return acc;