ACCESS: Implement fading routines

9 files changed, 195 insertions, 7 deletions

diff --git a/engines/access/access.cpp b/engines/access/access.cpp
index 8aabac2b0b..3acd4c530a 100644
--- a/engines/access/access.cpp
+++ b/engines/access/access.cpp
@@ -34,12 +34,14 @@ AccessEngine::AccessEngine(OSystem *syst, const AccessGameDescription *gameDesc)
 	_debugger = nullptr;
 	_events = nullptr;
 	_graphics = nullptr;
+	_screen = nullptr;
 }
 
 AccessEngine::~AccessEngine() {
 	delete _debugger;
 	delete _events;
 	delete _graphics;
+	delete _screen;
 }
 
 void AccessEngine::initialize() {
@@ -51,16 +53,18 @@ void AccessEngine::initialize() {
 	_debugger = new Debugger(this);
 	_events = new EventsManager(this);
 	_graphics = new GraphicsManager(this);
+	_screen = new Screen(this);
 }
 
 Common::Error AccessEngine::run() {
 	initialize();
 
 	setVGA();
-	_graphics->setPalettte();
-	_graphics->setPanel(0);
+	_screen->setInitialPalettte();
 	_events->setCursor(CURSOR_0);
 	_events->showCursor();
+	_graphics->setPanel(0);
+	doTitle();
 
 	dummyLoop();
 	return Common::kNoError;
diff --git a/engines/access/access.h b/engines/access/access.h
index 16487ea64f..4676d73d1d 100644
--- a/engines/access/access.h
+++ b/engines/access/access.h
@@ -33,6 +33,7 @@
 #include "access/debugger.h"
 #include "access/events.h"
 #include "access/graphics.h"
+#include "access/screen.h"
 
 /**
  * This is the namespace of the Access engine.
@@ -77,10 +78,16 @@ protected:
 	// Engine APIs
 	virtual Common::Error run();
 	virtual bool hasFeature(EngineFeature f) const;
+protected:
+	/**
+	 * Show game title
+	 */
+	virtual void doTitle() = 0;
 public:
 	Debugger *_debugger;
 	EventsManager *_events;
 	GraphicsManager *_graphics;
+	Screen *_screen;
 public:
 	AccessEngine(OSystem *syst, const AccessGameDescription *gameDesc);
 	virtual ~AccessEngine();
diff --git a/engines/access/amazon/amazon_game.cpp b/engines/access/amazon/amazon_game.cpp
index 2b4196a406..37441411d6 100644
--- a/engines/access/amazon/amazon_game.cpp
+++ b/engines/access/amazon/amazon_game.cpp
@@ -30,6 +30,13 @@ AmazonEngine::AmazonEngine(OSystem *syst, const AccessGameDescription *gameDesc)
 		AccessEngine(syst, gameDesc) {
 }
 
+void AmazonEngine::doTitle() {
+	_screen->setDisplayScan();
+	_screen->forceFadeOut();
+	_events->hideCursor();
+
+}
+
 } // End of namespace Amazon
 
 } // End of namespace Access
diff --git a/engines/access/amazon/amazon_game.h b/engines/access/amazon/amazon_game.h
index 1bccd1cedc..30ec2c6519 100644
--- a/engines/access/amazon/amazon_game.h
+++ b/engines/access/amazon/amazon_game.h
@@ -30,6 +30,8 @@ namespace Access {
 namespace Amazon {
 
 class AmazonEngine : public AccessEngine {
+protected:
+	virtual void doTitle();
 public:
 	AmazonEngine(OSystem *syst, const AccessGameDescription *gameDesc);
 
diff --git a/engines/access/graphics.cpp b/engines/access/graphics.cpp
index 8f0e22f2b1..c1187f2eb3 100644
--- a/engines/access/graphics.cpp
+++ b/engines/access/graphics.cpp
@@ -39,8 +39,4 @@ void GraphicsManager::setPanel(int num) {
 	_msVirtualOffset = _virtualOffsetsTable[num];
 }
 
-void GraphicsManager::setPalettte() {
-	g_system->getPaletteManager()->setPalette(INITIAL_PALETTE, 0, 18);
-}
-
 } // End of namespace Access
diff --git a/engines/access/graphics.h b/engines/access/graphics.h
index c7d2acd54e..df626176fa 100644
--- a/engines/access/graphics.h
+++ b/engines/access/graphics.h
@@ -43,7 +43,6 @@ public:
 	GraphicsManager(AccessEngine *vm);
 
 	void setPanel(int num);
-	void setPalettte();
 };
 
 } // End of namespace Access
diff --git a/engines/access/module.mk b/engines/access/module.mk
index d8867bc593..a4fb8646ba 100644
--- a/engines/access/module.mk
+++ b/engines/access/module.mk
@@ -7,6 +7,7 @@ MODULE_OBJS := \
 	events.o \
 	graphics.o \
 	resources.o \
+	screen.o \
 	amazon\amazon_game.o
 
 # This module can be built as a plugin
diff --git a/engines/access/screen.cpp b/engines/access/screen.cpp
new file mode 100644
index 0000000000..3f8dc4ecda
--- /dev/null
+++ b/engines/access/screen.cpp
@@ -0,0 +1,100 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "common/algorithm.h"
+#include "common/textconsole.h"
+#include "common/system.h"
+#include "graphics/palette.h"
+#include "access/screen.h"
+#include "access/resources.h"
+
+namespace Access {
+
+Screen::Screen(AccessEngine *vm) : _vm(vm) {
+	create(320, 200, Graphics::PixelFormat::createFormatCLUT8());
+	Common::fill(&_tempPalette[0], &_tempPalette[PALETTE_SIZE], 0);
+}
+
+void Screen::setDisplayScan() {
+	warning("TODO: setDisplayScan");
+}
+
+void Screen::updateScreen() {
+	g_system->updateScreen();
+}
+
+void Screen::setInitialPalettte() {
+	Common::copy(&INITIAL_PALETTE[0], &INITIAL_PALETTE[18 * 3], _rawPalette);
+	Common::fill(&_rawPalette[18 * 3], &_rawPalette[PALETTE_SIZE], 0);
+
+	g_system->getPaletteManager()->setPalette(INITIAL_PALETTE, 0, 18);
+}
+
+void Screen::updatePalette() {
+	g_system->getPaletteManager()->setPalette(&_tempPalette[0], 0, PALETTE_COUNT);
+	updateScreen();
+}
+
+void Screen::forceFadeOut() {
+	const int FADE_AMOUNT = 2;
+	bool repeatFlag;
+	byte *srcP;
+	int count;
+
+	do {
+		repeatFlag = false;
+		for (srcP = &_tempPalette[0], count = 0; count < PALETTE_COUNT; ++count, ++srcP) {
+			int v = *srcP;
+			if (v) {
+				repeatFlag = true;
+				*srcP = MAX(*srcP - FADE_AMOUNT, 0);
+			}
+		}
+
+		updatePalette();
+		g_system->delayMillis(10);
+	} while (repeatFlag);
+}
+
+void Screen::forceFadeIn() {
+	Common::fill(&_tempPalette[0], &_tempPalette[PALETTE_SIZE], 0);
+
+	const int FADE_AMOUNT = 2;
+	bool repeatFlag;
+	do {
+		repeatFlag = false;
+		const byte *srcP = &_rawPalette[0];
+		byte *destP = &_tempPalette[0];
+
+		for (int idx = 0; idx < PALETTE_SIZE; ++idx, ++srcP, ++destP) {
+			if (*destP != *srcP) {
+				repeatFlag = true;
+				*destP = MAX((int)*destP + FADE_AMOUNT, (int)*srcP);
+			}
+		}
+
+		updatePalette();
+		g_system->delayMillis(10);
+	} while (repeatFlag);
+}
+
+} // End of namespace Access
diff --git a/engines/access/screen.h b/engines/access/screen.h
new file mode 100644
index 0000000000..f8e0dab1b1
--- /dev/null
+++ b/engines/access/screen.h
@@ -0,0 +1,72 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef ACCESS_SCREEN_H
+#define ACCESS_SCREEN_H
+
+#include "common/scummsys.h"
+#include "common/rect.h"
+#include "graphics/surface.h"
+
+namespace Access {
+
+class AccessEngine;
+
+#define PALETTE_COUNT 256
+#define PALETTE_SIZE (256 * 3)
+
+class Screen: public Graphics::Surface {
+private:
+	AccessEngine *_vm;
+	byte _tempPalette[PALETTE_SIZE];
+	byte _rawPalette[PALETTE_SIZE];
+
+	void updatePalette();
+public:
+	Screen(AccessEngine *vm);
+
+	void setDisplayScan();
+
+	/**
+	 * Update the underlying screen
+	 */
+	void updateScreen();
+
+	/**
+	 * Fade out screen
+	 */
+	void forceFadeOut();
+
+	/**
+	 * Fade in screen
+	 */
+	void forceFadeIn();
+
+	/**
+	 * Set the initial palette
+	 */
+	void setInitialPalettte();
+};
+
+} // End of namespace Access
+
+#endif /* ACCESS_SCREEN_H */