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engines/scumm/he/moonbase/ai_node.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/>.
+ *
+ */
+
+#include "scumm/he/moonbase/ai_node.h"
+
+namespace Scumm {
+
+IContainedObject::IContainedObject(IContainedObject &sourceContainedObject) {
+	_objID = sourceContainedObject.getObjID();
+	_valueG = sourceContainedObject.getG();
+}
+
+int Node::_nodeCount = 0;
+
+Node::Node() {
+	_parent = nullptr;
+	_depth = 0;
+	_nodeCount++;
+	_contents = nullptr;
+}
+
+Node::Node(Node *sourceNode) {
+	_parent = nullptr;
+	_children = sourceNode->getChildren();
+
+	_depth = sourceNode->getDepth();
+
+	_contents = sourceNode->getContainedObject()->duplicate();
+}
+
+Node::~Node() {
+	if (_contents != nullptr) {
+		delete _contents;
+		_contents = nullptr;
+	}
+
+	_nodeCount--;
+}
+
+int Node::generateChildren() {
+	int numChildren = _contents->numChildrenToGen();
+
+	int numChildrenGenerated = numChildren;
+	int errorCode = -1;
+	static int i = 0;
+
+	while (i < numChildren) {
+		Node *tempNode = new Node;
+		_children.push_back(tempNode);
+		tempNode->setParent(this);
+		tempNode->setDepth(_depth + 1);
+
+		int completionFlag;
+
+		IContainedObject *thisContObj = _contents->createChildObj(i, completionFlag);
+		assert(!(thisContObj != nullptr && completionFlag == 0));
+
+		if (!completionFlag) {
+			_children.pop_back();
+			delete tempNode;
+			return 0;
+		}
+
+		i++;
+
+		if (thisContObj != nullptr) {
+			tempNode->setContainedObject(thisContObj);
+		} else {
+			_children.pop_back();
+			delete tempNode;
+			numChildrenGenerated--;
+		}
+	}
+
+	i = 0;
+
+	if (numChildrenGenerated > 0)
+		return numChildrenGenerated;
+
+	return errorCode;
+}
+
+
+int Node::generateNextChild() {
+	int numChildren = _contents->numChildrenToGen();
+
+	static int i = 0;
+
+	Node *tempNode = new Node;
+	_children.push_back(tempNode);
+	tempNode->setParent(this);
+	tempNode->setDepth(_depth + 1);
+
+	int compFlag;
+	IContainedObject *thisContObj = _contents->createChildObj(i, compFlag);
+
+	if (thisContObj != nullptr) {
+		tempNode->setContainedObject(thisContObj);
+	} else {
+		_children.pop_back();
+		delete tempNode;
+	}
+
+	++i;
+
+	if (i > numChildren)
+		i = 0;
+
+	return i;
+}
+
+Node *Node::popChild() {
+	Node *temp;
+
+	temp = _children.back();
+	_children.pop_back();
+	return temp;
+}
+
+Node *Node::getFirstStep() {
+	Node *currentNode = this;
+
+	if (currentNode->getParent() == nullptr)
+		return currentNode;
+
+	while (currentNode->getParent()->getParent() != nullptr)
+		currentNode = currentNode->getParent();
+
+	assert(currentNode->getDepth() == 1);
+
+	return currentNode;
+}
+
+} // End of namespace Scumm