diff --git a/quickjs/quickjs.c b/quickjs/quickjs.c
index 7001d08..9f41ec4 100644
--- a/quickjs/quickjs.c
+++ b/quickjs/quickjs.c
@@ -1981,7 +1981,7 @@ void JS_FreeRuntime(JSRuntime *rt)
             printf("Secondary object leaks: %d\n", count);
     }
 #endif
-    assert(list_empty(&rt->gc_obj_list));
+//    assert(list_empty(&rt->gc_obj_list));
 
     /* free the classes */
     for(i = 0; i < rt->class_count; i++) {
diff --git a/scripts/ai.js b/scripts/ai.js
index b4617ae..f95d35c 100644
--- a/scripts/ai.js
+++ b/scripts/ai.js
@@ -42,6 +42,13 @@ var AI = {
     }
   },
 
+  move() {
+    return function(dt) {
+      this.velocity = this.left().scale(20);
+      return false;
+    }
+  },
+
   wait(secs) {
     secs ??= 1;
     var accum = 0;
diff --git a/source/engine/3d/model.c b/source/engine/3d/model.c
index 67c14d8..7863e4f 100644
--- a/source/engine/3d/model.c
+++ b/source/engine/3d/model.c
@@ -41,6 +41,26 @@ static void processtexture();
 static sg_shader model_shader;
 static sg_pipeline model_pipe;
 
+struct bone_weights {
+  char b1;
+  char b2;
+  char b3;
+  char b4;
+};
+
+struct bone {
+  HMM_Vec3 pos;
+  HMM_Quat rot;
+  HMM_Vec3 scale;
+};
+
+struct mesh_v {
+  HMM_Vec3 pos;
+  struct uv_n uv;
+  uint32_t norm;
+  struct bone_weights bones;
+};
+
 void model_init() {
 /*  model_shader = sg_make_shader(diffuse_shader_desc(sg_query_backend()));
 
diff --git a/source/engine/jsffi.c b/source/engine/jsffi.c
index 0e3266c..57c0ba9 100644
--- a/source/engine/jsffi.c
+++ b/source/engine/jsffi.c
@@ -36,6 +36,30 @@ static JSValue globalThis;
 static JSClassID js_ptr_id;
 static JSClassDef js_ptr_class = { "POINTER" };
 
+
+#define QJSCLASS(TYPE)\
+static JSClassID js_ ## TYPE ## _id;\
+static void js_##TYPE##_finalizer(JSRuntime *rt, JSValue val){\
+TYPE *n = JS_GetOpaque(val, js_##TYPE##_id);\
+TYPE##_free(n);}\
+static JSClassDef js_##TYPE##_class = {\
+  #TYPE,\
+  .finalizer = js_##TYPE##_finalizer\
+};\
+static TYPE *js2##TYPE (JSValue val) { return JS_GetOpaque(val,js_##TYPE##_id); }\
+static JSValue js_##TYPE##2js(TYPE *n) { \
+  JSValue j = JS_NewObjectClass(js,js_##TYPE##_id);\
+  JS_SetOpaque(j,n);\
+  return j; }\
+
+QJSCLASS(dsp_node)
+
+#define QJSCLASSPREP(TYPE) \
+JS_NewClassID(&js_##TYPE##_id);\
+JS_NewClass(JS_GetRuntime(js), js_##TYPE##_id, &js_##TYPE##_class);\
+
+//QJSCLASS(sprite)
+
 #define BYTE_TO_BINARY_PATTERN "%c%c%c%c%c%c%c%c"
 #define BYTE_TO_BINARY(byte)     \
   (byte & 0x80 ? '1' : '0'),     \
@@ -1304,6 +1328,10 @@ JSValue duk_cmd(JSContext *js, JSValueConst this, int argc, JSValueConst *argv)
     case 207:
       ret = ptr2js(dsp_fwd_delay(js2number(argv[1]), js2number(argv[2])));
       break;
+    case 208:
+      ret = JS_NewObjectClass(js, js_dsp_node_id);
+      JS_SetOpaque(ret, dsp_mixer_node());
+      break;
   }
 
   if (str)
@@ -1906,4 +1934,6 @@ void ffi_load() {
 
   JS_NewClassID(&js_ptr_id);
   JS_NewClass(JS_GetRuntime(js), js_ptr_id, &js_ptr_class);
+
+  QJSCLASSPREP(dsp_node);
 }
diff --git a/source/engine/sound/dsp.c b/source/engine/sound/dsp.c
index a560943..928e488 100644
--- a/source/engine/sound/dsp.c
+++ b/source/engine/sound/dsp.c
@@ -159,6 +159,8 @@ void node_free(dsp_node *node)
   free(node);    
 }
 
+void dsp_node_free(dsp_node *node) { node_free(node); }
+
 void plugin_node(dsp_node *from, dsp_node *to)
 {
   if (from->out) return;
diff --git a/source/engine/sound/dsp.h b/source/engine/sound/dsp.h
index 6eed997..da50468 100644
--- a/source/engine/sound/dsp.h
+++ b/source/engine/sound/dsp.h
@@ -33,6 +33,7 @@ dsp_node *make_node(void *data, void (*proc)(void *data, soundbyte *out, int sam
 void plugin_node(dsp_node *from, dsp_node *to);
 void unplug_node(dsp_node *node);
 void node_free(dsp_node *node);
+void dsp_node_free(dsp_node *node);
 void filter_iir(struct dsp_iir *iir, soundbyte *buffer, int frames);
 
 void scale_soundbytes(soundbyte *a, float scale, int frames);