1 files changed, 105 insertions, 0 deletions
diff --git a/engines/neverhood/gamevars.cpp b/engines/neverhood/gamevars.cpp
new file mode 100644
index 0000000000..98ae709cfd
--- /dev/null
+++ b/engines/neverhood/gamevars.cpp
@@ -0,0 +1,105 @@
+/* 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 "neverhood/gamevars.h"
+
+namespace Neverhood {
+
+GameVars::GameVars() {
+	addVar(0, 0);
+}
+
+GameVars::~GameVars() {
+}
+
+uint32 GameVars::getGlobalVar(uint32 nameHash) {
+	debug("GameVars::getGlobalVar(%08X)", nameHash);
+	int16 varIndex = findSubVarIndex(0, nameHash);
+	return varIndex != -1 ? _vars[varIndex].value : 0;
+}
+
+void GameVars::setGlobalVar(uint32 nameHash, uint32 value) {
+	debug("GameVars::setGlobalVar(%08X, %d)", nameHash, value);
+	_vars[getSubVarIndex(0, nameHash)].value = value;
+}
+
+uint32 GameVars::getSubVar(uint32 nameHash, uint32 subNameHash) {
+	debug("GameVars::getSubVar(%08X, %08X)", nameHash, subNameHash);
+	uint32 value = 0;
+	int16 varIndex = findSubVarIndex(0, nameHash);
+	if (varIndex != -1) {
+		int16 subVarIndex = findSubVarIndex(varIndex, subNameHash);
+		if (subVarIndex != -1) {
+			value = _vars[subVarIndex].value;
+		}
+	} 
+	return value;
+}
+
+void GameVars::setSubVar(uint32 nameHash, uint32 subNameHash, uint32 value) {
+	debug("GameVars::setSubVar(%08X, %08X, %d)", nameHash, subNameHash, value);
+	_vars[getSubVarIndex(getSubVarIndex(0, nameHash), subNameHash)].value = value;
+}
+
+int16 GameVars::addVar(uint32 nameHash, uint32 value) {
+	debug("GameVars::addVar(%08X, %d)", nameHash, value);
+	GameVar gameVar;
+	gameVar.nameHash = nameHash;
+	gameVar.value = value;
+	gameVar.firstIndex = -1;
+	gameVar.nextIndex = -1;
+	_vars.push_back(gameVar);
+	return _vars.size() - 1;
+}
+
+int16 GameVars::findSubVarIndex(int16 varIndex, uint32 subNameHash) {
+	debug("GameVars::findSubVarIndex(%d, %08X)", varIndex, subNameHash);
+	for (int16 nextIndex = _vars[varIndex].firstIndex; nextIndex != -1; nextIndex = _vars[nextIndex].nextIndex) {
+		if (_vars[nextIndex].nameHash == subNameHash)
+			return nextIndex;
+	}
+	return -1;
+}
+
+int16 GameVars::addSubVar(int16 varIndex, uint32 subNameHash, uint32 value) {
+	debug("GameVars::addSubVar(%d, %08X, %d)", varIndex, subNameHash, value);
+	int16 nextIndex = _vars[varIndex].firstIndex;
+	if (nextIndex == -1) {
+		_vars[varIndex].firstIndex = addVar(subNameHash, value);
+		return _vars[varIndex].firstIndex;
+	} else {
+		while (_vars[nextIndex].nextIndex != -1)
+			nextIndex = _vars[nextIndex].nextIndex;
+		_vars[nextIndex].nextIndex = addVar(subNameHash, value);
+		return _vars[nextIndex].nextIndex;
+	}
+}
+
+int16 GameVars::getSubVarIndex(int16 varIndex, uint32 subNameHash) {
+	debug("GameVars::getSubVarIndex(%d, %08X)", varIndex, subNameHash);
+	int16 subVarIndex = findSubVarIndex(varIndex, subNameHash);
+	if (subVarIndex == -1)
+		subVarIndex = addSubVar(varIndex, subNameHash, 0);
+	return subVarIndex;
+}
+
+} // End of namespace Neverhood