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Diffstat (limited to 'engines/neverhood/gamevars.cpp')
| -rw-r--r-- | engines/neverhood/gamevars.cpp | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/engines/neverhood/gamevars.cpp b/engines/neverhood/gamevars.cpp new file mode 100644 index 0000000000..3e4e60438a --- /dev/null +++ b/engines/neverhood/gamevars.cpp @@ -0,0 +1,114 @@ +/* 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); + int16 varIndex = getSubVarIndex(0, nameHash); + //debug(" varIndex = %d", varIndex); + int16 subVarIndex = getSubVarIndex(varIndex, subNameHash); + //debug(" subVarIndex = %d", subVarIndex); + _vars[subVarIndex].value = 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; + int16 subVarIndex; + if (nextIndex == -1) { + subVarIndex = addVar(subNameHash, value); + _vars[varIndex].firstIndex = subVarIndex; + } else { + while (_vars[nextIndex].nextIndex != -1) + nextIndex = _vars[nextIndex].nextIndex; + subVarIndex = addVar(subNameHash, value); + _vars[nextIndex].nextIndex = subVarIndex; + } + return subVarIndex; +} + +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); + debug("need to create: subVarIndex = %d", subVarIndex); + } + return subVarIndex; +} + +} // End of namespace Neverhood |