1 files changed, 141 insertions, 0 deletions
diff --git a/engines/bbvs/graphics.cpp b/engines/bbvs/graphics.cpp
new file mode 100644
index 0000000000..810d910abf
--- /dev/null
+++ b/engines/bbvs/graphics.cpp
@@ -0,0 +1,141 @@
+/* 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 "bbvs/graphics.h"
+
+namespace Bbvs {
+
+void DrawList::add(int index, int x, int y, int priority) {
+	debug(5, "DrawList::add() %d (%d, %d) %d", index, x, y, priority);
+	DrawListEntry drawListEntry;
+	drawListEntry.index = index;
+	drawListEntry.x = x;
+	drawListEntry.y = y;
+	drawListEntry.priority = priority;
+	// Insert the sprite at the correct position
+	uint insertIndex = 0;
+	while (insertIndex < size() && (*this)[insertIndex].priority <= priority)
+		++insertIndex;
+	insert_at(insertIndex, drawListEntry);
+}
+
+Screen::Screen(OSystem *system) : _system(system) {
+	_surface = new Graphics::Surface();
+	_surface->create(320, 240, Graphics::PixelFormat::createFormatCLUT8());
+}
+
+Screen::~Screen() {
+	_surface->free();
+	delete _surface;
+}
+
+void Screen::setPalette(Palette &palette) {
+	byte pal[768];
+	memset(pal, 0, 768);
+	memcpy(&pal[palette.start * 3], palette.data, palette.count * 3);
+	_system->getPaletteManager()->setPalette(pal, 0, 256);
+}
+
+void Screen::copyToScreen() {
+	_system->copyRectToScreen((const byte*)_surface->getBasePtr(0, 0), _surface->pitch, 0, 0, 320, 240);
+	_system->updateScreen();
+}
+
+void Screen::clear() {
+	_surface->fillRect(Common::Rect(0, 0, 320, 240), 0);
+}
+
+void Screen::drawDrawList(DrawList &drawList, SpriteModule *spriteModule) {
+	for (uint i = 0; i < drawList.size(); ++i) {
+		debug(1, "index: %d; x: %d; y: %d; priority: %d", drawList[i].index, drawList[i].x, drawList[i].y, drawList[i].priority);
+		Sprite sprite = spriteModule->getSprite(drawList[i].index);
+		drawSprite(sprite, drawList[i].x, drawList[i].y);
+	}
+}
+
+void Screen::drawSprite(Sprite &sprite, int x, int y) {
+	debug(5, "Screen::drawSprite()");
+
+	int destX, destY, width, height, skipX = 0, skipY = 0;
+
+	destX = sprite.xOffs + x;
+	destY = sprite.yOffs + y;
+
+	if (destX >= _surface->w || destY >= _surface->h)
+		return;
+
+	height = sprite.height;
+	if (destY < 0) {
+		height += destY;
+		if (height <= 0)
+			return;
+		skipY = -destY;
+		destY = 0;
+	}
+	if (destY + height > _surface->h)
+		height = _surface->h - destY;
+
+	width = sprite.width;
+	if (destX < 0) {
+		width += destX;
+		if (width <= 0)
+			return;
+		skipX = -destX;
+		destX = 0;
+	}
+	if (destX + width >= _surface->w)
+		width = _surface->w - destX;
+	
+	debug(0, "drawSprite() (%d, %d, %d, %d); skipX: %d; skipY: %d; %d", destX, destY, width, height, skipX, skipY, sprite.type);
+	
+	if (sprite.type == 1) {
+		for (int yc = 0; yc < height; ++yc) {
+			byte *source = sprite.getRow(skipY + yc);
+			byte *dest = (byte*)_surface->getBasePtr(destX, destY + yc);
+			int currWidth = -skipX;
+			while (currWidth < width) {
+				int8 op = *source++;
+				if (op < 0) {
+					currWidth += (-op);
+				} else {
+					while (op >= 0 && currWidth < width) {
+						if (currWidth >= 0)
+							dest[currWidth] = *source;
+						++source;
+						++currWidth;
+						--op;
+					}
+				}
+			}
+		}
+	} else {
+		for (int yc = 0; yc < height; ++yc) {
+			byte *source = sprite.getRow(skipY + yc) + skipX;
+			byte *dest = (byte*)_surface->getBasePtr(destX, destY + yc);
+			memcpy(dest, source, width);
+		}
+	}
+
+	debug(5, "Screen::drawSprite() OK");
+}
+
+} // End of namespace Bbvs