bugs and perfomance cleanup.

include/binding/definitions.h

@@ -65,6 +65,7 @@ static mrb_value params_set(mrb_state *mrb, mrb_value self) {
   app::EText *element = (app::EText *)app::element_pool[id];
 
   element->params[mrb_sym2name(mrb, key)] = mrb_str_to_cstr(mrb, mrb_obj_as_string(mrb, value));
+  element->reload_text();
 
   return mrb_nil_value();
 }
@@ -509,7 +510,7 @@ static mrb_value element_text_inspect(mrb_state *mrb, mrb_value self) {
 static mrb_value element_text_to_s(mrb_state *mrb, mrb_value self) {
   uint64_t id = get_id_ElementText(mrb, self);
   app::EText *element = (app::EText *)app::element_pool[id];
-  std::string localized_text = Localization::get(Ruby::mrb, element->key, element->params);
+  std::string localized_text = Localization::get(element->key, element->params);
   return mrb_str_new_cstr(mrb, localized_text.c_str());
 }
 
@@ -1173,6 +1174,7 @@ static mrb_value ElementImage_init(mrb_state *mrb, mrb_value self) {
   }
 
   uint64_t id = get_id_Animation(mrb, animation_val);
+  animation_pool.use(id);
 
   app::EImage *element = new app::EImage(id);
   element->position = {x, y};
@@ -1572,7 +1574,7 @@ static mrb_value scene_elements_at(mrb_state *mrb, mrb_value self) {
   mrb_value position_val;
   mrb_get_args(mrb, "o", &position_val);
 
-  float x, y;
+  float x = 0, y = 0;
   HASH_FLOAT(position_val, x, x);
   HASH_FLOAT(position_val, y, y);
   Vec2<float> position = {x, y};

include/binding/ruby.h

@@ -20,8 +20,6 @@
       out = mrb_float(v);           \
     else if (mrb_fixnum_p(v))       \
       out = (float)mrb_fixnum(v);   \
-    else                            \
-      out = 0;                      \
   } while (0)
 
 #define HASH_BOOL(h, key, out)      \