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diff --git a/engines/neverhood/screen.cpp b/engines/neverhood/screen.cpp
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+/* 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 "graphics/palette.h"
+#include "neverhood/screen.h"
+
+namespace Neverhood {
+
+Screen::Screen(NeverhoodEngine *vm)
+ : _vm(vm), _paletteData(NULL), _paletteChanged(false) {
+
+ _ticks = _vm->_system->getMillis();
+
+ _backScreen = new Graphics::Surface();
+ _backScreen->create(640, 480, Graphics::PixelFormat::createFormatCLUT8());
+
+}
+
+Screen::~Screen() {
+ delete _backScreen;
+}
+
+void Screen::update() {
+ updatePalette();
+ // TODO: Implement actual code
+ _vm->_system->copyRectToScreen((const byte*)_backScreen->pixels, _backScreen->pitch, 0, 0, 640, 480);
+ _vm->_system->updateScreen();
+}
+
+void Screen::wait() {
+ // TODO
+ _vm->_system->delayMillis(40);
+}
+
+void Screen::setFps(int fps) {
+ _frameDelay = 1000 / fps;
+}
+
+int Screen::getFps() {
+ return 1000 / _frameDelay;
+}
+
+void Screen::setPaletteData(byte *paletteData) {
+ _paletteChanged = true;
+ _paletteData = paletteData;
+}
+
+void Screen::unsetPaletteData(byte *paletteData) {
+ if (_paletteData == paletteData) {
+ _paletteChanged = false;
+ _paletteData = NULL;
+ }
+}
+
+void Screen::testPalette(byte *paletteData) {
+ if (_paletteData == paletteData)
+ _paletteChanged = true;
+}
+
+void Screen::updatePalette() {
+ if (_paletteChanged && _paletteData) {
+ byte *tempPalette = new byte[768];
+ for (int i = 0; i < 256; i++) {
+ tempPalette[i * 3 + 0] = _paletteData[i * 4 + 0];
+ tempPalette[i * 3 + 1] = _paletteData[i * 4 + 1];
+ tempPalette[i * 3 + 2] = _paletteData[i * 4 + 2];
+ }
+ _vm->_system->getPaletteManager()->setPalette(tempPalette, 0, 256);
+ delete[] tempPalette;
+ _paletteChanged = false;
+ }
+}
+
+void Screen::clear() {
+ memset(_backScreen->pixels, 0, _backScreen->pitch * _backScreen->h);
+}
+
+void Screen::drawSurface2(const Graphics::Surface *surface, NDrawRect &drawRect, NRect &clipRect, bool transparent) {
+
+ int16 destX, destY;
+ NRect ddRect;
+
+ if (drawRect.x + drawRect.width >= clipRect.x2)
+ ddRect.x2 = clipRect.x2 - drawRect.x;
+ else
+ ddRect.x2 = drawRect.width;
+
+ if (drawRect.x < clipRect.x1) {
+ destX = clipRect.x1;
+ ddRect.x1 = clipRect.x1 - drawRect.x;
+ } else {
+ destX = drawRect.x;
+ ddRect.x1 = 0;
+ }
+
+ if (drawRect.y + drawRect.height >= clipRect.y2)
+ ddRect.y2 = clipRect.y2 - drawRect.y;
+ else
+ ddRect.y2 = drawRect.height;
+
+ if (drawRect.y < clipRect.y1) {
+ destY = clipRect.y1;
+ ddRect.y1 = clipRect.y1 - drawRect.y;
+ } else {
+ destY = drawRect.y;
+ ddRect.y1 = 0;
+ }
+
+ //debug(2, "draw: x = %d; y = %d; (%d, %d, %d, %d)", destX, destY, ddRect.x1, ddRect.y1, ddRect.x2, ddRect.y2);
+
+ blit(surface, destX, destY, ddRect, transparent);
+
+ // Useful for debugging
+ //_backScreen->frameRect(Common::Rect(clipRect.x1, clipRect.y1, clipRect.x2, clipRect.y2), 250);
+ //_backScreen->frameRect(Common::Rect(destX, destY, destX + ddRect.x2, destY + ddRect.y2), 255);
+ //_backScreen->frameRect(Common::Rect(drawRect.x, drawRect.y, drawRect.x + drawRect.width, drawRect.y + drawRect.height), 255);
+
+}
+
+void Screen::drawSurface3(const Graphics::Surface *surface, int16 x, int16 y, NDrawRect &drawRect, NRect &clipRect, bool transparent) {
+
+ int16 destX, destY;
+ NRect ddRect;
+
+ if (x + drawRect.width >= clipRect.x2)
+ ddRect.x2 = clipRect.x2 - drawRect.x - x;
+ else
+ ddRect.x2 = drawRect.x + drawRect.width;
+
+ if (x < clipRect.x1) {
+ destX = clipRect.x1;
+ ddRect.x1 = clipRect.x1 + drawRect.x - x;
+ } else {
+ destX = x;
+ ddRect.x1 = drawRect.x;
+ }
+
+ if (y + drawRect.height >= clipRect.y2)
+ ddRect.y2 = clipRect.y2 + drawRect.y - y;
+ else
+ ddRect.y2 = drawRect.y + drawRect.height;
+
+ if (y < clipRect.y1) {
+ destY = clipRect.y1;
+ ddRect.y1 = clipRect.y1 + drawRect.y - y;
+ } else {
+ destY = y;
+ ddRect.y1 = drawRect.y;
+ }
+
+ blit(surface, destX, destY, ddRect, transparent);
+
+}
+
+void Screen::blit(const Graphics::Surface *surface, int16 destX, int16 destY, NRect &ddRect, bool transparent) {
+
+ const byte *source = (const byte*)surface->getBasePtr(ddRect.x1, ddRect.y1);
+ byte *dest = (byte*)_backScreen->getBasePtr(destX, destY);
+ int width = ddRect.x2 - ddRect.x1;
+ int height = ddRect.y2 - ddRect.y1;
+
+ if (width <= 0 || height <= 0)
+ return;
+
+ if (!transparent) {
+ while (height--) {
+ memcpy(dest, source, width);
+ source += surface->pitch;
+ dest += _backScreen->pitch;
+ }
+ } else {
+ while (height--) {
+ for (int xc = 0; xc < width; xc++)
+ if (source[xc] != 0)
+ dest[xc] = source[xc];
+ source += surface->pitch;
+ dest += _backScreen->pitch;
+ }
+ }
+
+}
+
+void Screen::drawDoubleSurface2(const Graphics::Surface *surface, NDrawRect &drawRect) {
+
+ const byte *source = (const byte*)surface->getBasePtr(0, 0);
+ byte *dest = (byte*)_backScreen->getBasePtr(drawRect.x, drawRect.y);
+
+ for (int16 yc = 0; yc < surface->h; yc++) {
+ byte *row = dest;
+ for (int16 xc = 0; xc < surface->w; xc++) {
+ *row++ = *source;
+ *row++ = *source++;
+ }
+ memcpy(dest + _backScreen->pitch, dest, surface->w * 2);
+ dest += _backScreen->pitch;
+ dest += _backScreen->pitch;
+ }
+
+}
+
+void Screen::drawUnk(const Graphics::Surface *surface, NDrawRect &drawRect, NDrawRect &sysRect, NRect &clipRect, bool transparent) {
+
+ int16 x, y;
+ bool xflag, yflag;
+ NDrawRect newDrawRect;
+
+ x = sysRect.x;
+ if (sysRect.width <= x || -sysRect.width >= x) {
+ x = x % sysRect.width;
+ }
+ if (x < 0)
+ x += sysRect.width;
+
+ y = sysRect.y;
+ if (y >= sysRect.height || -sysRect.height >= y) {
+ y = y % sysRect.height;
+ }
+ if (y < 0)
+ y += sysRect.height;
+
+ xflag = x <= 0;
+ yflag = y <= 0;
+
+ newDrawRect.x = x;
+ newDrawRect.width = sysRect.width - x;
+ if (drawRect.width < newDrawRect.width) {
+ xflag = true;
+ newDrawRect.width = drawRect.width;
+ }
+
+ newDrawRect.y = y;
+ newDrawRect.height = sysRect.height - y;
+ if (drawRect.height < newDrawRect.height) {
+ yflag = true;
+ newDrawRect.height = drawRect.height;
+ }
+
+ drawSurface3(surface, drawRect.x, drawRect.y, newDrawRect, clipRect, transparent);
+
+ if (!xflag) {
+ newDrawRect.x = 0;
+ newDrawRect.y = y;
+ newDrawRect.width = x + drawRect.width - sysRect.width;
+ newDrawRect.height = sysRect.height - y;
+ if (drawRect.height < newDrawRect.height)
+ newDrawRect.height = drawRect.height;
+ drawSurface3(surface, sysRect.width + drawRect.x - x, drawRect.y, newDrawRect, clipRect, transparent);
+ }
+
+ if (!yflag) {
+ newDrawRect.x = x;
+ newDrawRect.y = 0;
+ newDrawRect.width = sysRect.width - x;
+ newDrawRect.height = y + drawRect.height - sysRect.height;
+ if (drawRect.width < newDrawRect.width)
+ newDrawRect.width = drawRect.width;
+ drawSurface3(surface, drawRect.x, sysRect.height + drawRect.y - y, newDrawRect, clipRect, transparent);
+ }
+
+ if (!xflag && !yflag) {
+ newDrawRect.x = 0;
+ newDrawRect.y = 0;
+ newDrawRect.width = x + drawRect.width - sysRect.width;
+ newDrawRect.height = y + drawRect.height - sysRect.height;
+ drawSurface3(surface, sysRect.width + drawRect.x - x, sysRect.height + drawRect.y - y, newDrawRect, clipRect, transparent);
+ }
+
+}
+
+} // End of namespace Neverhood