Add assignment

Engine.hpp

@@ -0,0 +1,37 @@
+#ifndef CHESS_ENGINE_ENGINE_HPP
+#define CHESS_ENGINE_ENGINE_HPP
+
+#include "PrincipalVariation.hpp"
+#include "Board.hpp"
+#include "TimeInfo.hpp"
+
+#include <string>
+#include <optional>
+#include <cstddef>
+
+struct HashInfo {
+    std::size_t defaultSize;
+    std::size_t minSize;
+    std::size_t maxSize;
+};
+
+class Engine {
+public:
+
+    virtual ~Engine() = default;
+
+    virtual std::string name() const = 0;
+    virtual std::string version() const = 0;
+    virtual std::string author() const = 0;
+
+    virtual void newGame() = 0;
+    virtual PrincipalVariation pv(
+        const Board& board,
+        const TimeInfo::Optional& timeInfo = std::nullopt
+    ) = 0;
+
+    virtual std::optional<HashInfo> hashInfo() const;
+    virtual void setHashSize(std::size_t size);
+};
+
+#endif