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engines/crab/ai/movement.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/ai/movement.h"
+
+namespace Crab {
+
+using namespace pyrodactyl::ai;
+
+//------------------------------------------------------------------------
+// Purpose: Walk in preset paths
+//------------------------------------------------------------------------
+void MovementSet::load(rapidxml::xml_node<char> *node) {
+	_enabled = true;
+	loadBool(_repeat, "repeat", node);
+	for (auto n = node->first_node("walk"); n != nullptr; n = n->next_sibling("walk"))
+		_path.push_back(n);
+}
+
+//------------------------------------------------------------------------
+// Purpose: To make the AI patrol/wait along certain points
+//------------------------------------------------------------------------
+bool MovementSet::internalEvents(const Rect rect) {
+	if (_enabled) {
+		// If we are at the current waypoint, get to the next waypoint
+		if (_path[_cur]._target.collide(rect)) {
+			_cur = (_cur + 1) % _path.size();
+			_timer.start();
+		}
+
+		// Wait according to the delay value in the node
+		if (_timer.ticks() >= _path[_cur]._delay)
+			return true;
+	}
+
+	return false;
+}
+
+} // End of namespace Crab