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diff --git a/src/blu_cat/gra/sprite_to_draw.hpp b/src/blu_cat/gra/sprite_to_draw.hpp
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+++ b/src/blu_cat/gra/sprite_to_draw.hpp
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+/*
+ * Copyright 2022-2024 Frederico de Oliveira Linhares
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef BLU_CAT_GRA_SPRITES_TO_DRAW_H
+#define BLU_CAT_GRA_SPRITES_TO_DRAW_H 1
+
+#include <memory>
+
+#include "vulkan.hpp"
+#include "sprite.hpp"
+
+namespace BluCat::GRA
+{
+  struct SpriteToDraw
+  {
+    std::shared_ptr<Sprite> sprite;
+    glm::vec4 position;
+    float z_index;
+
+    SpriteToDraw(std::shared_ptr<Sprite> sprite, const glm::vec4 &position,
+                 float z_index);
+  };
+
+  bool
+  operator<(const SpriteToDraw &a, const SpriteToDraw &b);
+
+  bool
+  operator>(const SpriteToDraw &a, const SpriteToDraw &b);
+}
+
+#endif /* BLU_CAT_GRA_SPRITES_TO_DRAW_H */