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engines/crab/event/triggerset.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 the CRAB engine
+ *
+ * Copyright (c) Arvind Raja Yadav
+ *
+ * Licensed under MIT
+ *
+ */
+
+#include "crab/event/triggerset.h"
+
+namespace Crab {
+
+using namespace pyrodactyl::event;
+
+void TriggerSet::load(rapidxml::xml_node<char> *node) {
+	for (rapidxml::xml_node<char> *n = node->first_node("trigger"); n != nullptr; n = n->next_sibling("trigger")) {
+		Trigger t(n);
+		_statement.push_back(t);
+	}
+}
+
+void TriggerSet::add(const Trigger &t) {
+	_statement.push_back(t);
+}
+
+bool TriggerSet::evaluate(pyrodactyl::event::Info &info) {
+	_result = true;
+
+	if (_statement.empty() == false) {
+		RelOp nextOp = OP_AND;
+		bool curResult = false;
+
+		for (auto &i : _statement) {
+			if (i._negate)
+				curResult = !i.evaluate(info);
+			else
+				curResult = i.evaluate(info);
+
+			if (nextOp == OP_AND)
+				_result = curResult && _result;
+			else
+				_result = curResult || _result;
+
+			nextOp = i._rel;
+		}
+	}
+
+	return _result;
+}
+
+} // End of namespace Crab