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engines/lab/labsets.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/>.
+ *
+ */
+
+/*
+ * This code is based on Labyrinth of Time code with assistance of
+ *
+ * Copyright (c) 1993 Terra Nova Development
+ * Copyright (c) 2004 The Wyrmkeep Entertainment Co.
+ *
+ */
+
+#include "common/file.h"
+
+#include "lab/lab.h"
+
+#include "lab/labsets.h"
+#include "lab/resource.h"
+
+namespace Lab {
+
+LargeSet::LargeSet(uint16 last, LabEngine *vm) : _vm(vm) {
+	last = (((last + 15) >> 4) << 4);
+
+	_array = new uint16[last >> 3]();
+	_lastElement = last;
+}
+
+LargeSet::~LargeSet() {
+	delete[] _array;
+}
+
+bool LargeSet::in(uint16 element) {
+	return ((1 << ((element - 1) % 16)) & (_array[(element - 1) >> 4])) > 0;
+}
+
+void LargeSet::inclElement(uint16 element) {
+	_array[(element - 1) >> 4] |= 1 << ((element - 1) % 16);
+}
+
+void LargeSet::exclElement(uint16 element) {
+	_array[(element - 1) >> 4] &= ~(1 << ((element - 1) % 16));
+}
+
+bool LargeSet::readInitialConditions(const Common::String &fileName) {
+	Common::File *file = _vm->_resource->openDataFile(fileName, MKTAG('C', 'O', 'N', '0'));
+
+	uint16 conditions = file->readUint16LE();
+	for (int i = 0; i < conditions; i++) {
+		inclElement(file->readUint16LE());
+	}
+
+	delete file;
+	return true;
+}
+
+
+} // End of namespace Lab