Added auto-save/load for config

Config.cpp

@@ -0,0 +1,51 @@
+#include "Config.h"
+
+Config::Config(const String& fileName)
+{
+	this->fileName = fileName;
+	AudioEnabled = true;
+	AudioLatencyIndex = 2;
+	VideoZoomIndex = 1;
+	SystemSpeedIndex = 4;
+
+	try
+	{
+		auto input = File::ReadAllLines(fileName);
+
+		int value;
+		if (tryGetValue(input, "AudioEnabled", value)) AudioEnabled = value != 0;
+		if (tryGetValue(input, "AudioLatencyIndex", value)) AudioLatencyIndex = value;
+		if (tryGetValue(input, "VideoZoomIndex", value)) VideoZoomIndex = value;
+		if (tryGetValue(input, "SystemSpeedIndex", value)) SystemSpeedIndex = value;
+	}
+	catch (...) { }
+}
+
+void Config::Save()
+{
+	String output;
+
+	output += String("AudioEnabled:") + AudioEnabled + "\n";
+	output += String("AudioLatencyIndex:") + AudioLatencyIndex + "\n";
+	output += String("VideoZoomIndex:") + VideoZoomIndex + "\n";
+	output += String("SystemSpeedIndex:") + SystemSpeedIndex + "\n";
+
+	try
+	{
+		File::WriteAllText(fileName, output);
+	}
+	catch (...) { }
+}
+
+bool Config::tryGetValue(const List<String>& input, const String& name, int& value)
+{
+	for (int i = 0; i < input.Count(); i++)
+	{
+		auto parts = input[i].Split(':');
+		if (parts.Count() == 2 && parts[0] == name)
+		{
+			if (parts[1].TryParseInt(value)) return true;
+		}
+	}
+	return false;
+}

Config.h

@@ -0,0 +1,24 @@
+#ifndef __CONFIG_H__
+#define __CONFIG_H__
+
+#include "Common.h"
+
+class Config
+{
+public:
+	Config(const String& fileName);
+
+	void Save();
+
+	bool AudioEnabled;
+	int AudioLatencyIndex;
+	int VideoZoomIndex;
+	int SystemSpeedIndex;
+
+private:
+	static bool tryGetValue(const List<String>& input, const String& name, int& value);
+
+	String fileName;
+};
+
+#endif

Main.cpp

@@ -1,5 +1,6 @@
 #include "Common.h"
 #include "Chip8/Chip8.h"
+#include "Config.h"
 #include "GLVideoDriver.h"
 #include "DirectSoundAudioDriver.h"
 
@@ -11,6 +12,8 @@ int Main(const List<String>& arguments)
 
 		auto running = true;
 
+		Config config(Directory::GetApplicationDirectory() + "\\config.cfg");
+
 		auto window = Window::Create("Vip8");
 		Key keys[] =
 		{
@@ -89,28 +92,33 @@ int Main(const List<String>& arguments)
 
 		auto systemAudioMenu = Menu::Create("Audio");
 		auto systemAudioEnabled = MenuItem::Create("Enabled");
-		systemAudioEnabled->SetChecked(audioDriver->GetEnabled());
+		systemAudioEnabled->SetChecked(config.AudioEnabled);
 		systemAudioEnabled->SetToggleEnabled(true);
-		systemAudioEnabled->CheckedChanged += [&] { audioDriver->SetEnabled(systemAudioEnabled->GetChecked()); };
+		auto reflectAudioEnabled = [&]
+			{
+				config.AudioEnabled = systemAudioEnabled->GetChecked();
+				audioDriver->SetEnabled(config.AudioEnabled);
+			};
+		systemAudioEnabled->CheckedChanged += reflectAudioEnabled;
+		reflectAudioEnabled();
 		systemAudioMenu->AddChild(systemAudioEnabled);
 		auto systemAudioLatencyMenu = Menu::Create("Latency");
 		const int numLatencies = 8;
 		const int latencies[] = { 20, 40, 60, 80, 100, 200, 500, 1000 };
-		int latencyIndex = 2;
 		List<MenuItem *> systemAudioLatencyItems;
 		auto reflectLatencyIndex = [&]
 			{
-				auto latency = latencies[latencyIndex];
+				auto latency = latencies[config.AudioLatencyIndex];
 				audioDriver->SetLatencyMs(latency);
-				for (int i = 0; i < systemAudioLatencyItems.Count(); i++) systemAudioLatencyItems[i]->SetChecked(i == latencyIndex);
+				for (int i = 0; i < systemAudioLatencyItems.Count(); i++) systemAudioLatencyItems[i]->SetChecked(i == config.AudioLatencyIndex);
 			};
 		for (int i = 0; i < numLatencies; i++)
 		{
 			auto latency = latencies[i];
 			auto item = MenuItem::Create(String(latency) + " ms");
 			item->Click += [&, i]
 				{
-					latencyIndex = i;
+					config.AudioLatencyIndex = i;
 					reflectLatencyIndex();
 				};
 			systemAudioLatencyMenu->AddChild(item);
@@ -124,21 +132,20 @@ int Main(const List<String>& arguments)
 		auto systemVideoZoomMenu = Menu::Create("Zoom");
 		const int numZooms = 4;
 		const int zooms[] = { 4, 8, 16, 32 };
-		int zoomIndex = 1;
 		List<MenuItem *> systemVideoZoomItems;
 		auto reflectZoomIndex = [&]
 			{
-				auto zoom = zooms[zoomIndex];
+				auto zoom = zooms[config.VideoZoomIndex];
 				window->SetDesiredSize(chip8.GetOutputWidth() * zoom, chip8.GetOutputHeight() * zoom);
-				for (int i = 0; i < systemVideoZoomItems.Count(); i++) systemVideoZoomItems[i]->SetChecked(i == zoomIndex);
+				for (int i = 0; i < systemVideoZoomItems.Count(); i++) systemVideoZoomItems[i]->SetChecked(i == config.VideoZoomIndex);
 			};
 		for (int i = 0; i < numZooms; i++)
 		{
 			auto zoom = zooms[i];
 			auto item = MenuItem::Create(String(zoom) + "x" + zoom);
 			item->Click += [&, i]
 				{
-					zoomIndex = i;
+					config.VideoZoomIndex = i;
 					reflectZoomIndex();
 				};
 			systemVideoZoomMenu->AddChild(item);
@@ -151,21 +158,20 @@ int Main(const List<String>& arguments)
 		auto systemSpeedMenu = Menu::Create("Speed");
 		const int numSpeeds = 10;
 		const int speeds[] = { 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000 };
-		int speedIndex = 4;
 		List<MenuItem *> systemSpeedItems;
 		auto reflectSpeedIndex = [&]
 			{
-				auto speed = speeds[speedIndex];
+				auto speed = speeds[config.SystemSpeedIndex];
 				chip8.SetSpeed(speed);
-				for (int i = 0; i < systemSpeedItems.Count(); i++) systemSpeedItems[i]->SetChecked(i == speedIndex);
+				for (int i = 0; i < systemSpeedItems.Count(); i++) systemSpeedItems[i]->SetChecked(i == config.SystemSpeedIndex);
 			};
 		for (int i = 0; i < numSpeeds; i++)
 		{
 			auto speed = speeds[i];
 			auto item = MenuItem::Create(String(speed) + " instruction" + (speed > 1 ? "s" : "") + "/frame");
 			item->Click += [&, i]
 				{
-					speedIndex = i;
+					config.SystemSpeedIndex = i;
 					reflectSpeedIndex();
 				};
 			systemSpeedMenu->AddChild(item);
@@ -197,6 +203,8 @@ int Main(const List<String>& arguments)
 			window->Update();
 		}
 
+		config.Save();
+
 		delete window;
 		delete menu;
 		delete fileMenu;

Vip8.vcxproj

@@ -81,6 +81,7 @@
     <ClCompile Include="Chip8\Apu.cpp" />
     <ClCompile Include="Chip8\Chip8.cpp" />
     <ClCompile Include="Chip8\Gpu.cpp" />
+    <ClCompile Include="Config.cpp" />
     <ClCompile Include="DirectSoundAudioDriver.cpp" />
     <ClCompile Include="GLVideoDriver.cpp" />
     <ClCompile Include="Main.cpp" />
@@ -90,6 +91,7 @@
     <ClInclude Include="Chip8\Chip8.h" />
     <ClInclude Include="Chip8\Gpu.h" />
     <ClInclude Include="Common.h" />
+    <ClInclude Include="Config.h" />
     <ClInclude Include="DirectSoundAudioDriver.h" />
     <ClInclude Include="GLVideoDriver.h" />
   </ItemGroup>

Vip8.vcxproj.filters

@@ -18,6 +18,7 @@
     <ClCompile Include="Chip8\Apu.cpp">
       <Filter>Chip8</Filter>
     </ClCompile>
+    <ClCompile Include="Config.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="Chip8\Chip8.h">
@@ -32,5 +33,6 @@
     <ClInclude Include="Chip8\Apu.h">
       <Filter>Chip8</Filter>
     </ClInclude>
+    <ClInclude Include="Config.h" />
   </ItemGroup>
 </Project>