From 3daf5edb1ade6bead5afccd086b0f524599bfa08 Mon Sep 17 00:00:00 2001
From: Moxious <moxious@oldhat.org>
Date: Mon, 15 Jan 2018 11:48:57 -0500
Subject: [PATCH] tweaks to COF and starting constant velocity

---
 src/model/World.js                            | 6 +++---
 src/model/worlds/BouncingBalls.js             | 2 +-
 src/model/worlds/bumpers/SimpleGridBumpers.js | 2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/model/World.js b/src/model/World.js
index 235280a..85fc2f2 100644
--- a/src/model/World.js
+++ b/src/model/World.js
@@ -134,13 +134,13 @@ export default class World {
         const bodyProps = _.merge({
             x: numberDefault(opts.x, Math.random() * renderer.width),
             y: numberDefault(opts.y, 0),
-            vx: numberDefault(opts.vx, (Math.random() * 0.5 * (neg ? -1 : 1))),
-            vy: numberDefault(opts.vy, (Math.random() * 0.5 * (neg ? -1 : 1))),
+            vx: numberDefault(opts.vx, (0.2/*Math.random() * 0.4 */* (neg ? -1 : 1))),
+            vy: numberDefault(opts.vy, (0.2/*Math.random() * 0.4 */* (neg ? -1 : 1))),
             mass: opts.mass || 0.1, // cannot be zero.
             radius: numberDefault(opts.radius, 20),
             width: numberDefault(opts.width, 30),
             height: numberDefault(opts.height, 30),
-            cof: numberDefault(opts.cof, 0.7),
+            cof: numberDefault(opts.cof, 0),
             label: opts.label || 'body-' + (++this.bodyCounter),
             restitution: numberDefault(opts.restitution, 1),
             treatment: opts.treatment || 'dynamic',
diff --git a/src/model/worlds/BouncingBalls.js b/src/model/worlds/BouncingBalls.js
index 96397cc..81d74ae 100644
--- a/src/model/worlds/BouncingBalls.js
+++ b/src/model/worlds/BouncingBalls.js
@@ -67,7 +67,7 @@ export default class BouncingBalls extends World {
             var edgeBounce = Physics.behavior('edge-collision-detection', {
                 aabb: viewportBounds,
                 restitution: 1,
-                cof: 1,
+                cof: 0,
             });
 
             // resize events
diff --git a/src/model/worlds/bumpers/SimpleGridBumpers.js b/src/model/worlds/bumpers/SimpleGridBumpers.js
index b1ad706..8ef371d 100644
--- a/src/model/worlds/bumpers/SimpleGridBumpers.js
+++ b/src/model/worlds/bumpers/SimpleGridBumpers.js
@@ -49,7 +49,7 @@ export default class SimpleGridBumpers extends Bumpers {
                 vertices: shapes.random(),
                 treatment: 'static',
                 restitution: 1,
-                cof: 1,
+                cof: 0,
                 styles: this.component.styleBumper(),
             }));
         }