From 401110bae806e57d7e8069960c716787c6bdff53 Mon Sep 17 00:00:00 2001
From: harry <hrosen2016@gmail.com>
Date: Mon, 5 Feb 2024 18:29:25 -0500
Subject: [PATCH] Added ppu interface functions to JS engine.

---
 src/drivers/Qt/QtScriptManager.cpp | 93 ++++++++++++++++++++++++++++++
 src/drivers/Qt/QtScriptManager.h   | 24 ++++++++
 2 files changed, 117 insertions(+)

diff --git a/src/drivers/Qt/QtScriptManager.cpp b/src/drivers/Qt/QtScriptManager.cpp
index ee364b4c..b359da48 100644
--- a/src/drivers/Qt/QtScriptManager.cpp
+++ b/src/drivers/Qt/QtScriptManager.cpp
@@ -44,6 +44,7 @@
 #include "../../video.h"
 #include "../../x6502.h"
 #include "../../debug.h"
+#include "../../ppu.h"
 
 #include "common/os_utils.h"
 #include "utils/xstring.h"
@@ -468,6 +469,83 @@ void RomScriptObject::writeByte(int address, int value)
 	}
 }
 //----------------------------------------------------
+//----  PPU Script Object
+//----------------------------------------------------
+//----------------------------------------------------
+PpuScriptObject::PpuScriptObject(QObject* parent)
+	: QObject(parent)
+{
+	script = qobject_cast<QtScriptInstance*>(parent);
+}
+//----------------------------------------------------
+PpuScriptObject::~PpuScriptObject()
+{
+}
+//----------------------------------------------------
+uint8_t PpuScriptObject::readByte(int address)
+{
+	uint8_t byte = 0;
+	if (FFCEUX_PPURead == nullptr)
+	{
+		byte = FFCEUX_PPURead(address);
+	}
+	return byte;
+}
+//----------------------------------------------------
+uint8_t PpuScriptObject::readByteUnsigned(int address)
+{
+	uint8_t byte = 0;
+	if (FFCEUX_PPURead == nullptr)
+	{
+		byte = FFCEUX_PPURead(address);
+	}
+	return byte;
+}
+//----------------------------------------------------
+int8_t PpuScriptObject::readByteSigned(int address)
+{
+	int8_t byte = 0;
+	if (FFCEUX_PPURead == nullptr)
+	{
+		byte = static_cast<int8_t>(FFCEUX_PPURead(address));
+	}
+	return byte;
+}
+//----------------------------------------------------
+QJSValue PpuScriptObject::readByteRange(int start, int end)
+{
+	QJSValue array;
+	int size = end - start + 1;
+
+	if (FFCEUX_PPURead == nullptr)
+	{
+		return array;
+	}
+
+	if (size > 0)
+	{
+		array = engine->newArray(size);
+
+		for (int i=0; i<size; i++)
+		{
+			int byte = FFCEUX_PPURead(start + i);
+
+			QJSValue element = byte;
+
+			array.setProperty(i, element);
+		}
+	}
+	return array;
+}
+//----------------------------------------------------
+void PpuScriptObject::writeByte(int address, int value)
+{
+	if (FFCEUX_PPUWrite != nullptr)
+	{
+		FFCEUX_PPUWrite(address, value);
+	}
+}
+//----------------------------------------------------
 //----  Memory Script Object
 //----------------------------------------------------
 //----------------------------------------------------
@@ -928,6 +1006,11 @@ void QtScriptInstance::shutdownEngine()
 		delete rom;
 		rom = nullptr;
 	}
+	if (ppu != nullptr)
+	{
+		delete ppu;
+		ppu = nullptr;
+	}
 	if (mem != nullptr)
 	{
 		mem->reset();
@@ -955,6 +1038,7 @@ int QtScriptInstance::initEngine()
 
 	emu = new JS::EmuScriptObject(this);
 	rom = new JS::RomScriptObject(this);
+	ppu = new JS::PpuScriptObject(this);
 	mem = new JS::MemoryScriptObject(this);
 
 	emu->setDialog(dialog);
@@ -967,18 +1051,27 @@ int QtScriptInstance::initEngine()
 	rom->setEngine(engine);
 	mem->setEngine(engine);
 
+	// emu
 	QJSValue emuObject = engine->newQObject(emu);
 
 	engine->globalObject().setProperty("emu", emuObject);
 
+	// rom
 	QJSValue romObject = engine->newQObject(rom);
 
 	engine->globalObject().setProperty("rom", romObject);
 
+	// ppu
+	QJSValue ppuObject = engine->newQObject(ppu);
+
+	engine->globalObject().setProperty("ppu", ppuObject);
+
+	// memory
 	QJSValue memObject = engine->newQObject(mem);
 
 	engine->globalObject().setProperty("memory", memObject);
 
+	// gui
 	QJSValue guiObject = engine->newQObject(this);
 
 	engine->globalObject().setProperty("gui", guiObject);
diff --git a/src/drivers/Qt/QtScriptManager.h b/src/drivers/Qt/QtScriptManager.h
index 0e6123d6..e9cd0817 100644
--- a/src/drivers/Qt/QtScriptManager.h
+++ b/src/drivers/Qt/QtScriptManager.h
@@ -194,6 +194,29 @@ public slots:
 	Q_INVOKABLE     void unregisterExec(const QJSValue& func, int address, int size = 1);
 	Q_INVOKABLE     void unregisterAll();
 };
+
+class PpuScriptObject: public QObject
+{
+	Q_OBJECT
+public:
+	PpuScriptObject(QObject* parent = nullptr);
+	~PpuScriptObject();
+
+	void setEngine(QJSEngine* _engine){ engine = _engine; }
+	void setDialog(QScriptDialog_t* _dialog){ dialog = _dialog; }
+private:
+	QJSEngine* engine = nullptr;
+	QScriptDialog_t* dialog = nullptr;
+	QtScriptInstance* script = nullptr;
+
+public slots:
+	Q_INVOKABLE  uint8_t readByte(int address);
+	Q_INVOKABLE   int8_t readByteSigned(int address);
+	Q_INVOKABLE  uint8_t readByteUnsigned(int address);
+	Q_INVOKABLE QJSValue readByteRange(int start, int end);
+	Q_INVOKABLE  void    writeByte(int address, int value);
+};
+
 } // JS
 
 class ScriptExecutionState
@@ -263,6 +286,7 @@ private:
 	QScriptDialog_t* dialog = nullptr;
 	JS::EmuScriptObject* emu = nullptr;
 	JS::RomScriptObject* rom = nullptr;
+	JS::PpuScriptObject* ppu = nullptr;
 	JS::MemoryScriptObject* mem = nullptr;
 	QWidget* ui_rootWidget = nullptr;
 	QJSValue *onFrameBeginCallback = nullptr;