We can now load lua scripts properly

include/emulator.hpp

@@ -119,6 +119,8 @@ class Emulator {
 	EmulatorConfig& getConfig() { return config; }
 	Cheats& getCheats() { return cheats; }
 	ServiceManager& getServiceManager() { return kernel.getServiceManager(); }
+	LuaManager& getLua() { return lua; }
+
 	RendererType getRendererType() const { return config.rendererType; }
 	Renderer* getRenderer() { return gpu.getRenderer(); }
 	u64 getTicks() { return cpu.getTicks(); }

include/lua_manager.hpp

@@ -1,4 +1,6 @@
 #pragma once
+#include <string>
+
 #include "helpers.hpp"
 #include "memory.hpp"
 
@@ -36,6 +38,8 @@ class LuaManager {
 	void initialize();
 	void initializeThunks();
 	void loadFile(const char* path);
+	void loadString(const std::string& code);
+
 	void reset();
 	void signalEvent(LuaEvent e) {
 		if (haveScript) [[unlikely]] {
@@ -52,6 +56,7 @@ class LuaManager {
 	void close() {}
 	void initialize() {}
 	void loadFile(const char* path) {}
+	void loadString(const std::string& code) {}
 	void reset() {}
 	void signalEvent(LuaEvent e) {}
 };

include/panda_qt/main_window.hpp

@@ -21,7 +21,7 @@ class MainWindow : public QMainWindow {
 
   private:
 	// Types of messages we might send from the GUI thread to the emulator thread
-	enum class MessageType { LoadROM, Reset, Pause, Resume, TogglePause, DumpRomFS, PressKey, ReleaseKey };
+	enum class MessageType { LoadROM, Reset, Pause, Resume, TogglePause, DumpRomFS, PressKey, ReleaseKey, LoadLuaScript };
 
 	// Tagged union representing our message queue messages
 	struct EmulatorMessage {
@@ -35,6 +35,10 @@ class MainWindow : public QMainWindow {
 			struct {
 				u32 key;
 			} key;
+
+			struct {
+				std::string* str;
+			} string;
 		};
 	};
 
@@ -72,4 +76,5 @@ class MainWindow : public QMainWindow {
 
 	void keyPressEvent(QKeyEvent* event) override;
 	void keyReleaseEvent(QKeyEvent* event) override;
+	void loadLuaScript(const std::string& code);
 };

src/lua.cpp

@@ -51,6 +51,31 @@ void LuaManager::loadFile(const char* path) {
 	}
 }
 
+void LuaManager::loadString(const std::string& code) {
+	// Initialize Lua if it has not been initialized
+	if (!initialized) {
+		initialize();
+	}
+
+	// If init failed, don't execute
+	if (!initialized) {
+		printf("Lua initialization failed, file won't run\n");
+		haveScript = false;
+
+		return;
+	}
+
+	int status = luaL_loadstring(L, code.c_str());  // load Lua script
+	int ret = lua_pcall(L, 0, 0, 0);                // tell Lua to run the script
+
+	if (ret != 0) {
+		haveScript = false;
+		fprintf(stderr, "%s\n", lua_tostring(L, -1));  // tell us what mistake we made
+	} else {
+		haveScript = true;
+	}
+}
+
 void LuaManager::signalEventInternal(LuaEvent e) {
 	lua_getglobal(L, "eventHandler"); // We want to call the event handler
 	lua_pushnumber(L, static_cast<int>(e)); // Push event type

src/panda_qt/main_window.cpp

@@ -195,6 +195,11 @@ void MainWindow::dispatchMessage(const EmulatorMessage& message) {
 			delete message.path.p;
 			break;
 
+		case MessageType::LoadLuaScript:
+			emu->getLua().loadString(*message.string.str);
+			delete message.string.str;
+			break;
+
 		case MessageType::Pause: emu->pause(); break;
 		case MessageType::Resume: emu->resume(); break;
 		case MessageType::TogglePause: emu->togglePause(); break;
@@ -259,3 +264,11 @@ void MainWindow::keyReleaseEvent(QKeyEvent* event) {
 		case Qt::Key_Backspace: releaseKey(HID::Keys::Select); break;
 	}
 }
+
+void MainWindow::loadLuaScript(const std::string& code) {
+	EmulatorMessage message{.type = MessageType::LoadLuaScript};
+
+	// Make a copy of the code on the heap to send via the message queue
+	message.string.str = new std::string(code);
+	sendMessage(message);
+}

src/panda_qt/text_editor.cpp

@@ -1,6 +1,10 @@
 #include "panda_qt/text_editor.hpp"
+
+#include <QPushButton>
 #include <QVBoxLayout>
 
+#include "panda_qt/main_window.hpp"
+
 using namespace Zep;
 
 TextEditorWindow::TextEditorWindow(QWidget* parent, const std::string& filename, const std::string& initialText)
@@ -13,8 +17,25 @@ TextEditorWindow::TextEditorWindow(QWidget* parent, const std::string& filename,
 
 	zepWidget.GetEditor().SetGlobalMode(Zep::ZepMode_Standard::StaticName());
 	zepWidget.GetEditor().InitWithText(filename, initialText);
-	
+
 	QVBoxLayout* mainLayout = new QVBoxLayout();
 	setLayout(mainLayout);
+
+	QPushButton* button = new QPushButton(tr("Load script"), this);
+	button->setFixedSize(100, 20);
+
+	connect(button, &QPushButton::pressed, this, [this]() {
+		if (parentWidget()) {
+			auto buffer = zepWidget.GetEditor().GetMRUBuffer();
+			const std::string text = buffer->GetBufferText(buffer->Begin(), buffer->End());
+
+			static_cast<MainWindow*>(parentWidget())->loadLuaScript(text);
+		} else {
+			// This should be unreachable, only here for safety purposes
+			printf("Text editor does not have any parent widget, click doesn't work :(\n");
+		}
+	});
+
+	mainLayout->addWidget(button);
 	mainLayout->addWidget(&zepWidget);
 }