From 28bfe7374930cd78f722451b8754822a11dd500d Mon Sep 17 00:00:00 2001
From: Paul Gilbert <dreammaster@scummvm.org>
Date: Wed, 13 Aug 2014 22:23:08 -0400
Subject: [PATCH] ACCESS: Implemented cmdSpecial script opcode

---
 engines/access/amazon/amazon_scripts.cpp |  5 +++++
 engines/access/amazon/amazon_scripts.h   |  2 ++
 engines/access/screen.cpp                | 18 ++++++++++++++++++
 engines/access/screen.h                  |  6 ++++++
 engines/access/scripts.cpp               | 21 ++++++++++++++++++++-
 engines/access/scripts.h                 |  2 ++
 6 files changed, 53 insertions(+), 1 deletion(-)

diff --git a/engines/access/amazon/amazon_scripts.cpp b/engines/access/amazon/amazon_scripts.cpp
index 1d3e7b4b7699..d7e84394b51c 100644
--- a/engines/access/amazon/amazon_scripts.cpp
+++ b/engines/access/amazon/amazon_scripts.cpp
@@ -31,6 +31,11 @@ namespace Amazon {
 AmazonScripts::AmazonScripts(AccessEngine *vm) : Scripts(vm) {
 }
 
+void AmazonScripts::executeSpecial(int commandIndex, int param1, int param2) {
+	warning("TODO");
+}
+
+
 } // End of namespace Amazon
 
 } // End of namespace Access
diff --git a/engines/access/amazon/amazon_scripts.h b/engines/access/amazon/amazon_scripts.h
index 08fbc3a0f2ad..b8fdaaa7f3dc 100644
--- a/engines/access/amazon/amazon_scripts.h
+++ b/engines/access/amazon/amazon_scripts.h
@@ -31,6 +31,8 @@ namespace Access {
 namespace Amazon {
 
 class AmazonScripts: public Scripts {
+protected:
+	virtual void executeSpecial(int commandIndex, int param1, int param2);
 public:
 	AmazonScripts(AccessEngine *vm);
 };
diff --git a/engines/access/screen.cpp b/engines/access/screen.cpp
index 6f9b53994def..4673bb6136a6 100644
--- a/engines/access/screen.cpp
+++ b/engines/access/screen.cpp
@@ -40,6 +40,7 @@ Screen::Screen(AccessEngine *vm) : _vm(vm) {
 	Common::fill(&_manPal[0], &_manPal[0x60], 0);
 	Common::fill(&_scaleTable1[0], &_scaleTable1[256], 0);
 	Common::fill(&_scaleTable2[0], &_scaleTable2[256], 0);
+	_savedPaletteCount = 0;
 	_vesaMode = 0;
 	_vesaCurrentWin = 0;
 	_currentPanel = 0;
@@ -114,6 +115,23 @@ void Screen::updatePalette() {
 	updateScreen();
 }
 
+void Screen::savePalette() {
+	Common::copy(&_rawPalette[0], &_rawPalette[PALETTE_SIZE],
+		&_savedPalettes[_savedPaletteCount][0]);
+
+	if (++_savedPaletteCount == 2)
+		_savedPaletteCount = 1;
+}
+
+void Screen::restorePalette() {
+	if (--_savedPaletteCount < 0)
+		_savedPaletteCount = 0;
+
+	Common::copy(&_savedPalettes[_savedPaletteCount][0],
+		&_savedPalettes[_savedPaletteCount][PALETTE_SIZE], &_rawPalette[0]);
+}
+
+
 void Screen::forceFadeOut() {
 	const int FADE_AMOUNT = 2;
 	bool repeatFlag;
diff --git a/engines/access/screen.h b/engines/access/screen.h
index 6ede482e6101..d759ae119e9e 100644
--- a/engines/access/screen.h
+++ b/engines/access/screen.h
@@ -52,6 +52,8 @@ class Screen: public ASurface {
 	AccessEngine *_vm;
 	byte _tempPalette[PALETTE_SIZE];
 	byte _rawPalette[PALETTE_SIZE];
+	byte _savedPalettes[2][PALETTE_SIZE];
+	int _savedPaletteCount;
 	int _vesaCurrentWin;
 	int _currentPanel;
 	Common::Point _msVirtualOffset;
@@ -117,6 +119,10 @@ class Screen: public ASurface {
 
 	void loadRawPalette(Common::SeekableReadStream *stream);
 
+	void savePalette();
+
+	void restorePalette();
+
 	/**
 	 * Copy a buffer to the screen
 	 */
diff --git a/engines/access/scripts.cpp b/engines/access/scripts.cpp
index 19633544f488..0e1d421c346e 100644
--- a/engines/access/scripts.cpp
+++ b/engines/access/scripts.cpp
@@ -326,7 +326,26 @@ void Scripts::cmdRemoveLast() {
 	--_vm->_numAnimTimers;
 }
 
-void Scripts::CMDSPECIAL() { error("TODO"); }
+void Scripts::CMDSPECIAL() { 
+	_specialFunction = _data->readUint16LE();
+	int p1 = _data->readUint16LE();
+	int p2 = _data->readUint16LE();
+
+	if (_specialFunction == 1) {
+		if (_vm->_establishTable[p2] == 1)
+			return;
+
+		_vm->_screen->savePalette();
+	}
+
+	executeSpecial(_specialFunction, p1, p2);
+
+	if (_specialFunction == 1) {
+		_vm->_screen->restorePalette();
+		_vm->_room->_function = 3;
+	}
+}
+
 void Scripts::CMDSETCYCLE() { error("TODO"); }
 void Scripts::CMDCYCLE() { error("TODO"); }
 void Scripts::CMDCHARSPEAK() { error("TODO"); }
diff --git a/engines/access/scripts.h b/engines/access/scripts.h
index 495c4c5f9f8c..0916b9e9b16c 100644
--- a/engines/access/scripts.h
+++ b/engines/access/scripts.h
@@ -37,9 +37,11 @@ class Scripts {
 private:
 	const byte *_rawData;
 	Common::MemoryReadStream *_data;
+	int _specialFunction;
 protected:
 	AccessEngine *_vm;
 
+	virtual void executeSpecial(int commandIndex, int param1, int param2) = 0;
 	virtual void executeCommand(int commandIndex);
 	void CMDOBJECT();
 	void CMDENDOBJECT();