1 files changed, 91 insertions, 0 deletions
diff --git a/Userland/Games/Snake/SnakeGame.h b/Userland/Games/Snake/SnakeGame.h
new file mode 100644
index 0000000000..790fc75746
--- /dev/null
+++ b/Userland/Games/Snake/SnakeGame.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <AK/CircularQueue.h>
+#include <AK/NonnullRefPtrVector.h>
+#include <LibGUI/Widget.h>
+
+class SnakeGame : public GUI::Widget {
+    C_OBJECT(SnakeGame)
+public:
+    virtual ~SnakeGame() override;
+
+    void reset();
+
+private:
+    SnakeGame();
+    virtual void paint_event(GUI::PaintEvent&) override;
+    virtual void keydown_event(GUI::KeyEvent&) override;
+    virtual void timer_event(Core::TimerEvent&) override;
+
+    struct Coordinate {
+        int row { 0 };
+        int column { 0 };
+
+        bool operator==(const Coordinate& other) const
+        {
+            return row == other.row && column == other.column;
+        }
+    };
+
+    struct Velocity {
+        int vertical { 0 };
+        int horizontal { 0 };
+    };
+
+    void game_over();
+    void spawn_fruit();
+    bool is_available(const Coordinate&);
+    void queue_velocity(int v, int h);
+    const Velocity& last_velocity() const;
+    Gfx::IntRect cell_rect(const Coordinate&) const;
+    Gfx::IntRect score_rect() const;
+    Gfx::IntRect high_score_rect() const;
+
+    int m_rows { 20 };
+    int m_columns { 20 };
+
+    Velocity m_velocity { 0, 1 };
+    Velocity m_last_velocity { 0, 1 };
+
+    CircularQueue<Velocity, 10> m_velocity_queue;
+
+    Coordinate m_head;
+    Vector<Coordinate> m_tail;
+
+    Coordinate m_fruit;
+    int m_fruit_type { 0 };
+
+    size_t m_length { 0 };
+    unsigned m_score { 0 };
+    String m_score_text;
+    unsigned m_high_score { 0 };
+    String m_high_score_text;
+
+    NonnullRefPtrVector<Gfx::Bitmap> m_fruit_bitmaps;
+};