added event.timestamp and event.delta to collision events, closes #368

src/core/Engine.js

@@ -149,8 +149,13 @@ var Body = require('../body/Body');
  Sleeping.afterCollisions(pairs.list);
 
  // trigger collision events
- if (pairs.collisionStart.length > 0)
- Events.trigger(engine, 'collisionStart', { pairs: pairs.collisionStart });
+ if (pairs.collisionStart.length > 0) {
+ Events.trigger(engine, 'collisionStart', { 
+ pairs: pairs.collisionStart,
+ timestamp: timing.timestamp,
+ delta: delta
+ });
+ }
 
  // iteratively resolve position between collisions
  var positionDamping = Common.clamp(20 / engine.positionIterations, 0, 1);
@@ -178,11 +183,21 @@ var Body = require('../body/Body');
  Engine._bodiesUpdateVelocities(allBodies);
 
  // trigger collision events
- if (pairs.collisionActive.length > 0)
- Events.trigger(engine, 'collisionActive', { pairs: pairs.collisionActive });
+ if (pairs.collisionActive.length > 0) {
+ Events.trigger(engine, 'collisionActive', { 
+ pairs: pairs.collisionActive, 
+ timestamp: timing.timestamp,
+ delta: delta
+ });
+ }
 
- if (pairs.collisionEnd.length > 0)
- Events.trigger(engine, 'collisionEnd', { pairs: pairs.collisionEnd });
+ if (pairs.collisionEnd.length > 0) {
+ Events.trigger(engine, 'collisionEnd', {
+ pairs: pairs.collisionEnd,
+ timestamp: timing.timestamp,
+ delta: delta
+ });
+ }
 
  // clear force buffers
  Engine._bodiesClearForces(allBodies);