Adding a step feature

sources/Debugger/DebugCpu.cpp

@@ -16,6 +16,7 @@ namespace ComSquare::Debugger
 
 		this->_ui.setupUi(this);
 		QMainWindow::connect(this->_ui.actionPause, &QAction::triggered, this, &CPUDebug::pause);
+		QMainWindow::connect(this->_ui.actionStep, &QAction::triggered, this, &CPUDebug::step);
 		this->show();
 	}
 
@@ -33,6 +34,12 @@ namespace ComSquare::Debugger
 
 	unsigned CPUDebug::_executeInstruction(uint8_t opcode)
 	{
+		if (this->_isPaused)
+			return 0;
+		if (this->_isStepping) {
+			this->_isStepping = false;
+			this->_isPaused = true;
+		}
 		this->_ui.logger->append(CPUDebug::_getInstructionString(opcode).c_str());
 		return CPU::_executeInstruction(opcode);
 	}
@@ -46,6 +53,12 @@ namespace ComSquare::Debugger
 			this->_ui.actionPause->setText("Pause");
 	}
 
+	void CPUDebug::step()
+	{
+		this->_isStepping = true;
+		this->_isPaused = false;
+	}
+
 	std::string CPUDebug::_getInstructionString(uint8_t opcode)
 	{
 		switch (opcode) {

sources/Debugger/DebugCpu.hpp

@@ -20,6 +20,8 @@ namespace ComSquare::Debugger
 		Ui::CPUView _ui;
 		//! @brief If this is set to true, the execution of the CPU will be paused.
 		bool _isPaused = true;
+		//! @brief If this is set to true, the CPU will execute one instruction and pause itself.
+		bool _isStepping = false;
 		//! @brief A reference to the snes (to disable the debugger).
 		SNES &_snes;
 		//! @brief Reimplement the basic instruction execution method to log instructions inside the logger view.
@@ -29,6 +31,8 @@ namespace ComSquare::Debugger
 	public slots:
 		//! @brief Pause/Resume the CPU.
 		void pause();
+		//! @brief Step - Execute a single instruction.
+		void step();
 	public:
 		//! @brief Convert a basic CPU to a debugging CPU.
 		explicit CPUDebug(ComSquare::CPU::CPU &cpu, SNES &snes);