Initial support for correct colors in the interface of Kyra1 AMIGA.

svn-id: r43192

3 files changed, 58 insertions, 4 deletions

diff --git a/engines/kyra/screen.cpp b/engines/kyra/screen.cpp
index 11467231ad..7547643071 100644
--- a/engines/kyra/screen.cpp
+++ b/engines/kyra/screen.cpp
@@ -113,6 +113,8 @@ bool Screen::init() {
 	const int paletteCount = (_vm->gameFlags().platform == Common::kPlatformAmiga) ? 12 : 4;
 	const int numColors = _use16ColorMode ? 16 : ((_vm->gameFlags().platform == Common::kPlatformAmiga) ? 32 : 256);
 
+	_interfacePaletteEnabled = false;
+
 	_screenPalette = new Palette(numColors);
 	assert(_screenPalette);
 
@@ -217,8 +219,23 @@ void Screen::updateScreen() {
 }
 
 void Screen::updateDirtyRects() {
-	if (_forceFullUpdate) {
-		_system->copyRectToScreen(getCPagePtr(0), SCREEN_W, 0, 0, SCREEN_W, SCREEN_H);
+	// TODO: Enable dirty rect handling for the AMIGA version
+	if (_forceFullUpdate || _vm->gameFlags().platform == Common::kPlatformAmiga) {
+		if (_interfacePaletteEnabled) {
+			_system->copyRectToScreen(getCPagePtr(0), SCREEN_W, 0, 0, SCREEN_W, 136);
+
+			// Page 8 is not used by Kyra 1 AMIGA, thus we can use it to adjust the colors
+			copyRegion(0, 136, 0, 0, 320, 64, 0, 8, CR_NO_P_CHECK);
+
+			uint8 *dst = getPagePtr(8);
+			for (int y = 0; y < 64; ++y)
+				for (int x = 0; x < 320; ++x)
+					*dst++ += 32;
+
+			_system->copyRectToScreen(getCPagePtr(8), SCREEN_W, 0, 136, SCREEN_W, 64);
+		} else {
+			_system->copyRectToScreen(getCPagePtr(0), SCREEN_W, 0, 0, SCREEN_W, SCREEN_H);
+		}
 	} else {
 		const byte *page0 = getCPagePtr(0);
 		Common::List<Common::Rect>::iterator it;
@@ -620,6 +637,31 @@ void Screen::setScreenPalette(const Palette &pal) {
 	_system->setPalette(screenPal, 0, pal.getNumColors());
 }
 
+void Screen::enableInterfacePalette(bool e) {
+	_interfacePaletteEnabled = e;
+
+	_forceFullUpdate = true;
+	_dirtyRects.clear();
+
+	updateScreen();
+}
+
+void Screen::setInterfacePalette(const Palette &pal) {
+	if (_vm->gameFlags().platform != Common::kPlatformAmiga)
+		return;
+
+	uint8 screenPal[256 * 4];
+
+	for (int i = 0; i < pal.getNumColors(); ++i) {
+		screenPal[4 * i + 0] = (pal[i * 3 + 0] * 0xFF) / 0x3F;
+		screenPal[4 * i + 1] = (pal[i * 3 + 1] * 0xFF) / 0x3F;
+		screenPal[4 * i + 2] = (pal[i * 3 + 2] * 0xFF) / 0x3F;
+		screenPal[4 * i + 3] = 0;
+	}
+
+	_system->setPalette(screenPal, 32, pal.getNumColors());
+}
+
 void Screen::copyToPage0(int y, int h, uint8 page, uint8 *seqBuf) {
 	assert(y + h <= SCREEN_H);
 	const uint8 *src = getPagePtr(page) + y * SCREEN_W;
diff --git a/engines/kyra/screen.h b/engines/kyra/screen.h
index f947d2b9a9..07b4562ffa 100644
--- a/engines/kyra/screen.h
+++ b/engines/kyra/screen.h
@@ -355,6 +355,10 @@ public:
 	void setPaletteIndex(uint8 index, uint8 red, uint8 green, uint8 blue);
 	virtual void setScreenPalette(const Palette &pal);
 
+	// AMIGA version only
+	void enableInterfacePalette(bool e);
+	void setInterfacePalette(const Palette &pal);
+
 	void getRealPalette(int num, uint8 *dst);
 	Palette &getPalette(int num);
 	void copyPalette(const int dst, const int src);
@@ -568,6 +572,9 @@ protected:
 	int _drawShapeVar4;
 	int _drawShapeVar5;
 
+	// AMIGA version
+	bool _interfacePaletteEnabled;
+
 	// debug
 	bool _debugEnabled;
 };
diff --git a/engines/kyra/staticres.cpp b/engines/kyra/staticres.cpp
index 86680a7b76..a65c99434b 100644
--- a/engines/kyra/staticres.cpp
+++ b/engines/kyra/staticres.cpp
@@ -1598,10 +1598,15 @@ void KyraEngine_LoK::loadMainScreen(int page) {
 	else
 		warning("no main graphics file found");
 
-	if (_flags.platform == Common::kPlatformAmiga)
+	_screen->copyRegion(0, 0, 0, 0, 320, 200, page, 0, Screen::CR_NO_P_CHECK);
+
+	if (_flags.platform == Common::kPlatformAmiga) {
 		_screen->copyPalette(1, 0);
+		_screen->setInterfacePalette(_screen->getPalette(1));
 
-	_screen->copyRegion(0, 0, 0, 0, 320, 200, page, 0);
+		// TODO: Move this to a better place
+		_screen->enableInterfacePalette(true);
+	}
 }
 
 void KyraEngine_HoF::initStaticResource() {