diff --git a/source/engine/2dphysics.c b/source/engine/2dphysics.c
index 5988e57..5c607d2 100644
--- a/source/engine/2dphysics.c
+++ b/source/engine/2dphysics.c
@@ -119,8 +119,7 @@ struct phys2d_circle *Make2DCircle(int go)
     struct phys2d_circle *new = malloc(sizeof(struct phys2d_circle));
 
     new->radius = 10.f;
-    new->offset[0] = 0.f;
-    new->offset[1] = 0.f;
+    new->offset = cpvzero;
 
     new->shape.shape = cpSpaceAddShape(space, cpCircleShapeNew(id2go(go)->body, new->radius, cpvzero));
     new->shape.debugdraw = phys2d_dbgdrawcircle;
@@ -137,7 +136,7 @@ void phys2d_circledel(struct phys2d_circle *c)
 void circle_gui(struct phys2d_circle *circle)
 {
     nuke_property_float("Radius", 1.f, &circle->radius, 10000.f, 1.f, 1.f);
-    nuke_property_float2("Offset", 0.f, circle->offset, 1.f, 0.01f, 0.01f);
+    //nuke_property_float2("Offset", 0.f, circle->offset, 1.f, 0.01f, 0.01f);
 
     phys2d_applycircle(circle);
 }
@@ -366,7 +365,7 @@ void phys2d_applycircle(struct phys2d_circle *circle)
 
     float radius = circle->radius * go->scale;
     float s = go->scale;
-    cpVect offset = { circle->offset[0] * s, circle->offset[1] * s };
+    cpVect offset = { circle->offset.x * s, circle->offset.y * s };
 
     cpCircleShapeSetRadius(circle->shape.shape, radius);
     cpCircleShapeSetOffset(circle->shape.shape, offset);
diff --git a/source/engine/2dphysics.h b/source/engine/2dphysics.h
index 92c9fce..d23f068 100644
--- a/source/engine/2dphysics.h
+++ b/source/engine/2dphysics.h
@@ -25,7 +25,7 @@ struct phys2d_shape {
 
 struct phys2d_circle {
     float radius;
-    float offset[2];
+    cpVect offset;
     struct phys2d_shape shape;
 };
 
diff --git a/source/engine/ffi.c b/source/engine/ffi.c
index 0a98714..0064dac 100644
--- a/source/engine/ffi.c
+++ b/source/engine/ffi.c
@@ -45,6 +45,12 @@ cpVect duk2vec2(duk_context *duk, int p) {
     return pos;
 }
 
+void vec2float(cpVect v, float *f)
+{
+    f[0] = v.x;
+    f[1] = v.y;
+}
+
 duk_ret_t duk_gui_text(duk_context *duk) {
     const char *s = duk_to_string(duk, 0);
     cpVect pos = duk2vec2(duk, 1);
@@ -80,7 +86,7 @@ duk_ret_t duk_nuke(duk_context *duk)
 
         case 2:
           editnum = duk_to_number(duk, 2);
-          nuke_property_float(duk_to_string(duk, 1), 0.f, &editnum, 100.f, 0.01f, 0.01f);
+          nuke_property_float(duk_to_string(duk, 1), duk_to_number(duk, 3), &editnum, duk_to_number(duk, 4), duk_to_number(duk, 5), duk_to_number(duk, 5));
           duk_push_number(duk, editnum);
           return 1;
 
@@ -261,6 +267,15 @@ duk_ret_t duk_cmd(duk_context *duk) {
        case 35:
          ((struct timer*)duk_to_pointer(duk, 1))->repeat = duk_to_boolean(duk, 2);
          return 0;
+
+       case 36:
+         id2go(duk_to_int(duk, 1))->scale = duk_to_number(duk, 2);
+         return 0;
+
+       case 37:
+         if (!id2sprite(duk_to_int(duk, 1))) return 0;
+         vec2float(duk2vec2(duk, 2), id2sprite(duk_to_int(duk, 1))->pos);
+         break;
     }
 
     return 0;
@@ -515,7 +530,11 @@ duk_ret_t duk_make_box2d(duk_context *duk) {
 
   phys2d_applybox(box);
 
-  duk_push_pointer(duk, &box->shape);
+      int idx = duk_push_object(duk);
+    duk_push_pointer(duk, &box->shape);
+    duk_put_prop_string(duk, idx, "id");
+    duk_push_pointer(duk, box);
+    duk_put_prop_string(duk, idx, "shape");
 
   return 1;
 }
@@ -524,19 +543,33 @@ duk_ret_t duk_cmd_box2d(duk_context *duk)
 {
     int cmd = duk_to_int(duk, 0);
     struct phys2d_box *box = duk_to_pointer(duk, 1);
+    cpVect arg = duk2vec2(duk, 2);
 
+    if (!box) return 0;
+
+    switch(cmd) {
+        case 0:
+          box->w = arg.x;
+          box->h = arg.y;
+          break;
+
+        case 1:
+          box->offset[0] = arg.x;
+          box->offset[1] = arg.y;
+          break;
+    }
+
+    phys2d_applybox(box);
     return 0;
 }
 
 duk_ret_t duk_make_circle2d(duk_context *duk) {
    int go = duk_to_int(duk, 0);
   double radius = duk_to_number(duk, 1);
-  cpVect offset = duk2vec2(duk, 2);
 
     struct phys2d_circle *circle = Make2DCircle(go);
     circle->radius = radius;
-    circle->offset[0] = offset.x;
-    circle->offset[1] = offset.y;
+    circle->offset = duk2vec2(duk, 2);
 
     phys2d_applycircle(circle);
 
@@ -559,12 +592,14 @@ duk_ret_t duk_cmd_circle2d(duk_context *duk)
     switch(cmd) {
         case 0:
           circle->radius = duk_to_number(duk, 2);
-          phys2d_applycircle(circle);
-          return 0;
+          break;
 
+        case 1:
+          circle->offset = duk2vec2(duk, 2);
+          break;
     }
 
-
+    phys2d_applycircle(circle);
     return 0;
 }
 
diff --git a/source/engine/openglrender.c b/source/engine/openglrender.c
index 3eae7fb..2efcff5 100644
--- a/source/engine/openglrender.c
+++ b/source/engine/openglrender.c
@@ -124,7 +124,10 @@ void add_zoom(float val) { zoom = val; }
 
 void openglRender(struct window *window)
 {
+    glCullFace(GL_BACK);
 
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
     //////////// 2D projection
     mfloat_t projection[16] = { 0.f };
     cpVect pos = cam_pos();
diff --git a/source/engine/sprite.c b/source/engine/sprite.c
index 385e197..2571452 100644
--- a/source/engine/sprite.c
+++ b/source/engine/sprite.c
@@ -58,6 +58,7 @@ void sprite_enabled(int id, int e)
 }
 
 struct sprite *id2sprite(int id) {
+    if (id < 0) return NULL;
     return &sprites[id];
 }
 
@@ -180,6 +181,7 @@ void sprite_draw(struct sprite *sprite)
 
 void sprite_setanim(struct sprite *sprite, struct TexAnim *anim, int frame)
 {
+    if (!sprite) return;
     sprite->tex = anim->tex;
     sprite->frame = &anim->st_frames[frame];
 }