From df3f0d1436c4f13656e09dc2ff5ae473ac82a775 Mon Sep 17 00:00:00 2001
From: Asraelite <markusscully@gmail.com>
Date: Thu, 24 Mar 2016 01:09:29 +0000
Subject: [PATCH] add interpolation

---
 public/js/starbugs/world/asteroid.js |  2 +-
 public/js/starbugs/world/physics.js  | 10 +++++++---
 public/js/starbugs/world/ship.js     |  2 +-
 3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/public/js/starbugs/world/asteroid.js b/public/js/starbugs/world/asteroid.js
index 5fb7251..135007c 100644
--- a/public/js/starbugs/world/asteroid.js
+++ b/public/js/starbugs/world/asteroid.js
@@ -27,7 +27,7 @@ function Asteroid(data) {
 		this.yvel = data[3];
 		this.r = data[4];
 		this.rvel = data[5];
-		this.updated = true;
+		this.updated = 10;
 	};
 
 	this.tick = function() {
diff --git a/public/js/starbugs/world/physics.js b/public/js/starbugs/world/physics.js
index c7658c9..b43214a 100644
--- a/public/js/starbugs/world/physics.js
+++ b/public/js/starbugs/world/physics.js
@@ -73,12 +73,16 @@ function Physics() {
 
 		for (var i in game.world.bodies) {
 			var s = SCALE;
+			var r = 0.1;
 			var body = game.world.bodies[i];
-			if (!body.updated) continue;
-			body.b2body.SetPositionAndAngle(new b2Vec2(body.x, body.y), body.r);
+			var pos = body.getPos();
+			var x = (body.x * r + pos.x) / (r + 1);
+			var y = (body.y * r + pos.y) / (r + 1);
+			var r = (body.r * r + pos.r) / (r + 1);
+			if (body.updated-- <= 0) continue;
+			body.b2body.SetPositionAndAngle(new b2Vec2(x, y), r);
 			body.b2body.SetLinearVelocity(new b2Vec2(body.xvel, body.yvel));
 			body.b2body.SetAngularVelocity(body.rvel);
-			body.updated = false;
 		}
 		for (var i = 0; i < this.toRemove.length; i++) {
 			this.world.DestroyBody(this.toRemove[i]);
diff --git a/public/js/starbugs/world/ship.js b/public/js/starbugs/world/ship.js
index c0b0001..9c2532b 100644
--- a/public/js/starbugs/world/ship.js
+++ b/public/js/starbugs/world/ship.js
@@ -45,7 +45,7 @@ function Ship(data) {
 		this.yvel = data[3];
 		this.r = data[4];
 		this.rvel = data[5];
-		this.updated = true;
+		this.updated = 10;
 		this.thrust = {
 			forward: data[6],
 			left: data[7],