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engines/wage/randomhat.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/>.
+ *
+ * MIT License:
+ *
+ * Copyright (c) 2009 Alexei Svitkine, Eugene Sandulenko
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#include "common/random.h"
+
+#include "common/hashmap.h"
+#include "wage/randomhat.h"
+
+namespace Wage {
+
+void RandomHat::addTokens(int type, int count) {
+	_tokens.setVal(type, _tokens.getValOrDefault(type, 0) + count);
+}
+
+int RandomHat::countTokens() {
+	int count = 0;
+	for (Common::HashMap<int, int>::const_iterator it = _tokens.begin(); it != _tokens.end(); ++it)
+		count += it->_value;
+
+	return count;
+}
+
+int RandomHat::drawToken() {
+	int total = countTokens();
+	if (total > 0) {
+		int random = _rnd->getRandomNumber(total - 1);
+		int count = 0;
+		for (Common::HashMap<int, int>::iterator it = _tokens.begin(); it != _tokens.end(); ++it) {
+			if (random >= count && random < count + it->_value) {
+				it->_value--;
+				return it->_key;
+			}
+			count += it->_value;
+		}
+	}
+	return kTokNone;
+}
+
+} // End of namespace Wage