Games: Add ColorLines

Userland/Games/ColorLines/Marble.h

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2022, Oleg Kosenkov <oleg@kosenkov.ca>
+ * Copyright (c) 2022, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibGfx/Point.h>
+
+class Marble final {
+public:
+    using Point = Gfx::IntPoint;
+    using Color = u8;
+
+    static constexpr int number_of_colors { 6 };
+    static constexpr Color empty_cell = NumericLimits<Color>::max();
+
+    Marble() = default;
+    Marble(Point position, Color color)
+        : m_position { position }
+        , m_color { color }
+    {
+    }
+
+    bool operator==(Marble const& other) const = default;
+
+    [[nodiscard]] constexpr Point position() const { return m_position; }
+
+    [[nodiscard]] constexpr Color color() const { return m_color; }
+
+private:
+    Point m_position {};
+    Color m_color {};
+};
+
+namespace AK {
+template<>
+struct Traits<Marble> : public GenericTraits<Marble> {
+    static unsigned hash(Marble const& marble)
+    {
+        return Traits<Marble::Point>::hash(marble.position());
+    }
+};
+}