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engines/tetraedge/te/te_references_counter.h

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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/>.
+ *
+ */
+
+#ifndef TETRAEDGE_TE_TE_REFERENCES_COUNTER_H
+#define TETRAEDGE_TE_TE_REFERENCES_COUNTER_H
+
+namespace Tetraedge {
+
+class TeReferencesCounter {
+public:
+	TeReferencesCounter() : _refCount(0) {};
+	virtual ~TeReferencesCounter() {};
+
+	bool decrementCounter() {
+		if (_refCount) {
+			_refCount--;
+			return _refCount == 0;
+		}
+		return false;
+	}
+
+	void incrementCounter() {
+		_refCount++;
+	}
+
+	void resetCounter() {
+		_refCount = 0;
+	}
+
+private:
+	int _refCount;
+};
+
+} // end namespace Tetraedge
+
+#endif // TETRAEDGE_TE_TE_REFERENCES_COUNTER_H