Initial commit

engines/twine/parser/blocklibrary.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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "twine/parser/blocklibrary.h"
+#include "common/stream.h"
+
+namespace TwinE {
+
+void BlockLibraryData::reset() {
+	_layouts.clear();
+}
+
+bool BlockLibraryData::loadFromStream(Common::SeekableReadStream &stream, bool lba1) {
+	reset();
+	const uint32 numLayouts = stream.readUint32LE() / 4;
+	_layouts.resize(numLayouts);
+	stream.seek(0);
+	for (uint32 i = 0; i < numLayouts; ++i) {
+		BlockData &blockData = _layouts[i];
+		const uint32 offset = stream.readUint32LE();
+		const uint32 nextOffset = stream.pos();
+		if (!stream.seek(offset)) {
+			return false;
+		}
+		if (!parseLayout(blockData, stream, lba1)) {
+			return false;
+		}
+		stream.seek(nextOffset);
+	}
+	return !stream.err();
+}
+
+bool BlockLibraryData::parseLayout(BlockData &blockData, Common::SeekableReadStream &stream, bool lba1) {
+	const uint8 x = stream.readByte();
+	const uint8 y = stream.readByte();
+	const uint8 z = stream.readByte();
+	const int32 numBricks = x * y * z;
+	blockData.entries.resize(numBricks);
+	for (int32 i = 0; i < numBricks; ++i) {
+		BlockDataEntry &blockEntry = blockData.entries[i];
+		blockEntry.brickShape = stream.readByte();
+		blockEntry.brickType = stream.readByte();
+		blockEntry.brickIdx = stream.readUint16LE();
+		blockEntry.sound = bits(blockEntry.brickType, 0, 4);
+	}
+	return !stream.err();
+}
+
+const BlockData *BlockLibraryData::getLayout(int index) const {
+	if (index < 0 || index >= (int)_layouts.size()) {
+		error("Block library index out of range: %i", index);
+	}
+	return &_layouts[index];
+}
+
+} // End of namespace TwinE