PRINCE: mhwanh decoder added. simple game loop works

1 files changed, 77 insertions, 0 deletions

diff --git a/engines/prince/mhwanh.cpp b/engines/prince/mhwanh.cpp
new file mode 100644
index 0000000000..4ce7beded9
--- /dev/null
+++ b/engines/prince/mhwanh.cpp
@@ -0,0 +1,77 @@
+/* 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/stream.h"
+
+#include "graphics/surface.h"
+
+#include "prince/mhwanh.h"
+
+namespace Prince {
+
+MhwanhDecoder::MhwanhDecoder() : _surface(0), _palette(0), _paletteColorCount(0)
+{
+}
+
+MhwanhDecoder::~MhwanhDecoder()
+{
+    destroy();
+}
+
+void MhwanhDecoder::destroy()
+{
+    if (_surface)
+    {
+        _surface->free();
+        delete _surface; _surface = 0;
+    }
+
+    delete [] _palette; _palette = 0;
+    _paletteColorCount = 0;
+}
+
+bool MhwanhDecoder::loadStream(Common::SeekableReadStream &stream)
+{
+    _paletteColorCount = 256;
+    stream.seek(0);
+    stream.skip(0x20);
+    // Read the palette
+    _palette = new byte[_paletteColorCount * 3]; 
+    for (uint16 i = 0; i < _paletteColorCount; i++) {
+        _palette[i * 3 + 0] = stream.readByte();
+        _palette[i * 3 + 1] = stream.readByte();
+        _palette[i * 3 + 2] = stream.readByte();
+    }  
+
+    _surface = new Graphics::Surface();
+    _surface->create(640, 480, Graphics::PixelFormat::createFormatCLUT8());
+    for (int h = 0; h < 480; ++h)
+    {
+        stream.read(_surface->getBasePtr(0, h - 1), 640);
+    }
+
+    return true;
+}
+
+}
+
+