System: Scaffolding for multi-system/multi-bios

src/core/host_interface.h

@@ -2,6 +2,8 @@
 #include "types.h"
 #include "settings.h"
 #include <memory>
+#include <optional>
+#include <vector>
 
 class AudioStream;
 class HostDisplay;
@@ -23,20 +25,26 @@ public:
   /// Returns a settings object which can be modified.
   Settings& GetSettings() { return m_settings; }
 
+  bool CreateSystem();
+  bool BootSystem(const char* filename, const char* state_filename);
+  void DestroySystem();
 
-  bool InitializeSystem(const char* filename, const char* exp1_filename);
-  void ShutdownSystem();
-
-
-  virtual void ReportMessage(const char* message) = 0;
+  virtual void ReportError(const char* message);
+  virtual void ReportMessage(const char* message);
 
   // Adds OSD messages, duration is in seconds.
   virtual void AddOSDMessage(const char* message, float duration = 2.0f) = 0;
 
+  /// Loads the BIOS image for the specified region.
+  virtual std::optional<std::vector<u8>> GetBIOSImage(ConsoleRegion region);
+
   bool LoadState(const char* filename);
   bool SaveState(const char* filename);
 
 protected:
+  /// Connects controllers. TODO: Clean this up later...
+  virtual void ConnectControllers();
+
   void UpdateAudioVisualSync();
 
   std::unique_ptr<HostDisplay> m_display;