Get our first AR code running

include/action_replay.hpp

@@ -3,9 +3,10 @@
 #include <vector>
 
 #include "helpers.hpp"
+#include "memory.hpp"
 
 class ActionReplay {
-	using Cheat = std::vector<u32>;  // A cheat is really just a bunch of u32 opcodes
+	using Cheat = std::vector<u32>;  // A cheat is really just a bunch of 64-bit opcodes neatly encoded into 32-bit chunks
 
 	u32 offset1, offset2;    // Memory offset registers. Non-persistent.
 	u32 data1, data2;        // Data offset registers. Non-persistent.
@@ -14,9 +15,29 @@ class ActionReplay {
 	// When an instruction does not specify which offset or data register to use, we use the "active" one
 	// Which is by default #1 and may be changed by certain AR operations
 	u32 *activeOffset, *activeData;
+	
+	// Program counter
+	u32 pc = 0;
+	Memory& mem;
+
+	// Has the cheat ended?
+	bool running = false;
+	// Run 1 AR instruction
+	void runInstruction(const Cheat& cheat, u32 instruction);
+
+	// Action Replay has a billion D-type opcodes so this handles all of them
+	void executeDType(const Cheat& cheat, u32 instruction);
+
+	u8 read8(u32 addr);
+	u16 read16(u32 addr);
+	u32 read32(u32 addr);
+
+	void write8(u32 addr, u8 value);
+	void write16(u32 addr, u16 value);
+	void write32(u32 addr, u32 value);
 
   public:
-	ActionReplay();
+	ActionReplay(Memory& mem);
 	void runCheat(const Cheat& cheat);
 	void reset();
 };

include/cheats.hpp

@@ -5,6 +5,9 @@
 #include "action_replay.hpp"
 #include "helpers.hpp"
 
+// Forward-declare this since it's just passed and we don't want to include memory.hpp and increase compile time
+class Memory;
+
 class Cheats {
   public:
 	enum class CheatType {
@@ -17,10 +20,10 @@ class Cheats {
 		std::vector<u32> instructions;
 	};
 
-	Cheats();
+	Cheats(Memory& mem);
 	void addCheat(const Cheat& cheat);
-	void runCheats();
 	void reset();
+	void run();
 
   private:
 	ActionReplay ar; // An ActionReplay cheat machine for executing CTRPF codes

include/emulator.hpp

@@ -32,7 +32,7 @@ class Emulator {
 	Memory memory;
 	Kernel kernel;
 	Crypto::AESEngine aesEngine;
-	ActionReplay cheats;
+	Cheats cheats;
 
 	SDL_Window* window;