1 files changed, 89 insertions, 0 deletions
diff --git a/engines/titanic/true_talk/tt_node.cpp b/engines/titanic/true_talk/tt_node.cpp
new file mode 100644
index 0000000000..cbbb1dd756
--- /dev/null
+++ b/engines/titanic/true_talk/tt_node.cpp
@@ -0,0 +1,89 @@
+/* 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "common/textconsole.h"
+#include "titanic/true_talk/tt_node.h"
+
+namespace Titanic {
+
+TTnode::TTnode() : _priorP(nullptr), _nextP(nullptr) {
+}
+
+TTnode::~TTnode() {
+	detach();
+}
+
+void TTnode::addToTail(TTnode *newNode) {
+	TTnode *tail = getTail();
+	tail->_nextP = newNode;
+	newNode->_priorP = this;
+}
+
+void TTnode::addToHead(TTnode *newNode) {
+	TTnode *head = getHead();
+	head->_priorP = newNode;
+	newNode->_nextP = head;
+}
+
+void TTnode::detach() {
+	if (_priorP)
+		_priorP->_nextP = _nextP;
+
+	if (_nextP)
+		_nextP->_priorP = _priorP;
+}
+
+void TTnode::deleteSiblings() {
+	// Detach current node from prior one, if there is one
+	if (_priorP)
+		_priorP->_nextP = nullptr;
+
+	// Iterate through the linked chain of nodes, deleting each in turn
+	for (TTnode *curP = _nextP, *nextP = nullptr; nextP; curP = nextP) {
+		nextP = curP->_nextP;
+		delete curP;
+	}
+}
+
+TTnode *TTnode::getHead() {
+	if (_priorP == nullptr)
+		return this;
+
+	TTnode *node = _priorP;
+	while (node->_priorP)
+		node = node->_priorP;
+
+	return node;
+}
+
+TTnode *TTnode::getTail() {
+	if (_nextP == nullptr)
+		return this;
+	
+	TTnode *node = _nextP;
+	while (node->_nextP)
+		node = node->_nextP;
+
+	return node;
+}
+
+} // End of namespace Titanic