ILLUSIONS: Add GAM archive reader for Duckman and adjust the resource reader/system

1 files changed, 79 insertions, 0 deletions

diff --git a/engines/illusions/fileresourcereader.cpp b/engines/illusions/fileresourcereader.cpp
new file mode 100644
index 0000000000..c707c6535a
--- /dev/null
+++ b/engines/illusions/fileresourcereader.cpp
@@ -0,0 +1,79 @@
+/* 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 "illusions/resourcesystem.h"
+#include "illusions/fileresourcereader.h"
+#include "illusions/illusions.h"
+#include "common/file.h"
+#include "common/str.h"
+
+namespace Illusions {
+
+byte *ResourceReaderFileReader::readResource(uint32 sceneId, uint32 resId, uint32 &dataSize) {
+	debug("ResourceReaderFileReader::readResource(%08X, %08X)", sceneId, resId);
+	
+	Common::String filename = buildResourceFilename(resId);
+	Common::File fd;
+	if (!fd.open(filename))
+		error("Resource::loadData() Could not open %s for reading", filename.c_str());
+	dataSize = fd.size();
+	byte *data = (byte*)malloc(dataSize);
+	fd.read(data, dataSize);
+	return data;
+}
+
+Common::String ResourceReaderFileReader::buildResourceFilename(uint32 resId) {
+	const char *ext = getResourceExtension(resId);
+	return Common::String::format("%08X%s", resId, ext);
+}
+
+const char *ResourceReaderFileReader::getResourceExtension(uint32 resId) {
+	// TODO Make constants
+	switch (ResourceTypeId(resId)) {
+	case 0x00060000:
+	case 0x00100000:
+		// ActorResource
+		return ".act";
+	case 0x00080000:
+		// SoundGroupResource
+		return ".sg";
+	case 0x000D0000:
+		// ScriptResource
+		return ".scr";
+	case 0x000F0000:
+		// TalkResource
+		return ".tlk";
+	case 0x00110000:
+		// BackgroundResource
+		return ".bg";
+	case 0x00120000:
+		// FontResource
+		return ".fnt";
+	case 0x00170000:
+		// SpecialCode
+		return "";
+	default:
+		return "";
+	}
+}
+
+} // End of namespace Illusions