Games: Move to Userland/Games/

Userland/Games/2048/Game.h

@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2020, the SerenityOS developers.
+ * 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/Vector.h>
+
+class Game final {
+public:
+    Game(size_t board_size, size_t target_tile = 0);
+    Game(const Game&) = default;
+
+    enum class MoveOutcome {
+        OK,
+        InvalidMove,
+        GameOver,
+        Won,
+    };
+
+    enum class Direction {
+        Up,
+        Down,
+        Left,
+        Right,
+    };
+
+    MoveOutcome attempt_move(Direction);
+
+    size_t score() const { return m_score; }
+    size_t turns() const { return m_turns; }
+    u32 target_tile() const { return m_target_tile; }
+    u32 largest_tile() const;
+
+    using Board = Vector<Vector<u32>>;
+
+    const Board& board() const { return m_board; }
+
+    static size_t max_power_for_board(size_t size)
+    {
+        if (size >= 6)
+            return 31;
+
+        return size * size + 1;
+    }
+
+private:
+    void add_random_tile();
+
+    size_t m_grid_size { 0 };
+    u32 m_target_tile { 0 };
+
+    Board m_board;
+    size_t m_score { 0 };
+    size_t m_turns { 0 };
+};