From bc8715f4038c545ca1afb645e16514d531641982 Mon Sep 17 00:00:00 2001
From: cha0s <git@cha0s.io>
Date: Tue, 20 Apr 2021 08:19:45 -0500
Subject: [PATCH] chore: API

---
 packages/physics/src/traits/emitter.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/physics/src/traits/emitter.js b/packages/physics/src/traits/emitter.js
index a502546..70fb4b3 100644
--- a/packages/physics/src/traits/emitter.js
+++ b/packages/physics/src/traits/emitter.js
@@ -288,7 +288,7 @@ export default (latus) => class Emitter extends decorate(Trait) {
         return stream;
       },
 
-      emitParticle: (key, json) => {
+      emitParticle: (key, json = {}) => {
         const particleJson = this.#particles[key];
         if (!particleJson) {
           return undefined;
@@ -296,7 +296,7 @@ export default (latus) => class Emitter extends decorate(Trait) {
         return this.entity.emitParticleJson(merge(particleJson, json));
       },
 
-      jsonForParticle: (key) => this.#particles[key] || {},
+      jsonForParticle: (key, json = {}) => merge(this.#particles[key] || {}, json),
 
     };
   }