added buttons to main state

src/states/OptionsState.h

@@ -0,0 +1,35 @@
+#pragma once
+
+#include "State.h"
+
+class OptionsState : public State {
+public:
+    explicit OptionsState(StateContext& ctx);
+    void onEnter() override;
+    void onExit() override;
+    void handleEvent(const SDL_Event& e) override;
+    void update(double frameMs) override;
+    void render(SDL_Renderer* renderer, float logicalScale, SDL_Rect logicalVP) override;
+
+private:
+    enum class Field : int {
+        PlayerName = 0,
+        Fullscreen = 1,
+        Back = 2
+    };
+
+    static constexpr int MAX_NAME_LENGTH = 12;
+    Field m_selectedField = Field::PlayerName;
+    double m_cursorTimer = 0.0;
+    bool m_cursorVisible = true;
+
+    void moveSelection(int delta);
+    void activateSelection();
+    void handleNameInput(const SDL_Event& e);
+    void addCharacter(char c);
+    void removeCharacter();
+    void toggleFullscreen();
+    void exitToMenu();
+    const std::string& playerName() const;
+    bool isFullscreen() const;
+};