diff --git a/source/engine/ffi.c b/source/engine/ffi.c
index 6cbcd83..ce6c746 100644
--- a/source/engine/ffi.c
+++ b/source/engine/ffi.c
@@ -256,7 +256,12 @@ duk_ret_t duk_spline_cmd(duk_context *duk)
     int d = duk_to_int(duk, 2);
     cpVect points[n*d]; 
 
-    ts_bspline_new(n, d, duk_to_int(duk, 1), duk_to_int(duk, 3), &spline, NULL);
+    tsStatus status;
+    ts_bspline_new(n, d, duk_to_int(duk, 1), duk_to_int(duk, 3), &spline, &status);
+
+    if (status.code) {
+      YughCritical("Spline creation error %d: %s", status.code, status.message);
+    }
 
       for (int i = 0; i < n; i++) {
       duk_get_prop_index(duk, 4, i);
@@ -626,6 +631,11 @@ duk_ret_t duk_cmd(duk_context *duk) {
 	case 59:
 	  duk_push_int(duk, point2segindex(duk2vec2(duk, 1), duk2cpvec2arr(duk, 2), duk_to_number(duk, 3)));
 	  return 1;
+	  
+	case 60:
+	  if (!id2sprite(duk_to_int(duk, 1))) return 0;
+          id2sprite(duk_to_int(duk, 1))->layer = duk_to_int(duk, 2);
+	  break;
     }
 
     return 0;
@@ -852,7 +862,7 @@ duk_ret_t duk_make_sprite(duk_context *duk) {
   sp->pos[0] = pos.x;
   sp->pos[1] = pos.y;
 
-   duk_push_int(duk, sprite);
+  duk_push_int(duk, sprite);
   return 1;
 }
 
diff --git a/source/engine/input.c b/source/engine/input.c
index 68ab954..524886a 100644
--- a/source/engine/input.c
+++ b/source/engine/input.c
@@ -55,7 +55,7 @@ static void cursor_pos_cb(GLFWwindow *w, double xpos, double ypos)
     mouse_pos.y = ypos;
 
     for (int i = 0; i < arrlen(pawns); i++) {
-        if (script_eval_setup("input_mouse_pos", pawns[i])) continue;
+        if (!pawns[i] || script_eval_setup("input_mouse_pos", pawns[i])) continue;
 	vect2duk(duk, mouse_pos);
         script_eval_exec(1);
     }
@@ -119,7 +119,8 @@ void call_input_signal(char *signal) {
     }
 
     for (int i = 0; i < arrlen(pawns); i++) {
-        script_eval_w_env(signal, pawns[i]);
+      if (!pawns[i]) continue;
+      script_eval_w_env(signal, pawns[i]);
     }
 }
 
@@ -215,6 +216,17 @@ const char *keyname_extd(int key, int scancode) {
 		case GLFW_KEY_KP_SUBTRACT:
 		  kkey = "minus";
 		  break;
+		case GLFW_KEY_GRAVE_ACCENT:
+		  kkey = "backtick";
+		  break;
+
+		case GLFW_KEY_LEFT_BRACKET:
+		  kkey = "lbracket";
+		  break;
+
+		case GLFW_KEY_RIGHT_BRACKET:
+		  kkey = "rbracket";
+		  break;
             }
 
             if (kkey) return kkey;
@@ -257,6 +269,7 @@ void win_key_callback(GLFWwindow *w, int key, int scancode, int action, int mods
         case GLFW_PRESS:
             snprintf(keystr, 50, "input_%s_pressed", kkey);
 	    add_downkey(key);
+	    call_input_signal("input_any_pressed");
             break;
 
         case GLFW_RELEASE:
diff --git a/source/engine/sprite.c b/source/engine/sprite.c
index 8a54e6d..4c9762e 100644
--- a/source/engine/sprite.c
+++ b/source/engine/sprite.c
@@ -27,6 +27,7 @@ int make_sprite(int go)
         .tex = texture_loadfromfile("ph.png"),
         .go = go,
         .next = -1,
+	.layer = 0,
         .enabled = 1  };
 
     int ret;
@@ -81,13 +82,20 @@ void sprite_io(struct sprite *sprite, FILE *f, int read)
     }
 }
 
-
-
 void sprite_draw_all()
 {
+    static struct sprite **layers[5];
+    
+    for (int i = 0; i < 5; i++)
+      arrfree(layers[i]);
+      
     for (int i = 0; i < arrlen(sprites); i++) {
-        if (sprites[i].go >= 0 && sprites[i].enabled) sprite_draw(&sprites[i]);
+        if (sprites[i].go >= 0 && sprites[i].enabled) arrpush(layers[sprites[i].layer], &sprites[i]);
     }
+
+    for (int i = 4; i >= 0; i--)
+      for (int j = 0; j < arrlen(layers[i]); j++)
+        sprite_draw(layers[i][j]);
 }
 
 void sprite_loadtex(struct sprite *sprite, const char *path)
diff --git a/source/engine/sprite.h b/source/engine/sprite.h
index bd7e372..0214677 100644
--- a/source/engine/sprite.h
+++ b/source/engine/sprite.h
@@ -20,6 +20,7 @@ struct sprite {
     struct glrect *frame;
     int next;
     int enabled;
+    int layer;
 };
 
 int make_sprite(int go);