mirror of
https://github.com/libretro/scummvm.git
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135 lines
4.0 KiB
C++
135 lines
4.0 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "neverhood/console.h"
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#include "neverhood/gamevars.h"
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namespace Neverhood {
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GameVars::GameVars() {
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addVar(0, 0);
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}
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void GameVars::clear() {
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_vars.clear();
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addVar(0, 0);
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}
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void GameVars::loadState(Common::InSaveFile *in) {
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uint varCount;
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_vars.clear();
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varCount = in->readUint32LE();
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for (uint i = 0; i < varCount; ++i) {
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GameVar var;
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var.nameHash = in->readUint32LE();
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var.value = in->readUint32LE();
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var.firstIndex = in->readUint16LE();
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var.nextIndex = in->readUint16LE();
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_vars.push_back(var);
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}
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}
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void GameVars::saveState(Common::OutSaveFile *out) {
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out->writeUint32LE(_vars.size());
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for (uint i = 0; i < _vars.size(); ++i) {
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GameVar &var = _vars[i];
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out->writeUint32LE(var.nameHash);
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out->writeUint32LE(var.value);
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out->writeUint16LE(var.firstIndex);
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out->writeUint16LE(var.nextIndex);
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}
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}
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uint32 GameVars::getGlobalVar(uint32 nameHash) {
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int16 varIndex = findSubVarIndex(0, nameHash);
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return varIndex != -1 ? _vars[varIndex].value : 0;
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}
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void GameVars::setGlobalVar(uint32 nameHash, uint32 value) {
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_vars[getSubVarIndex(0, nameHash)].value = value;
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}
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uint32 GameVars::getSubVar(uint32 nameHash, uint32 subNameHash) {
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uint32 value = 0;
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int16 varIndex = findSubVarIndex(0, nameHash);
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if (varIndex != -1) {
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int16 subVarIndex = findSubVarIndex(varIndex, subNameHash);
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if (subVarIndex != -1)
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value = _vars[subVarIndex].value;
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}
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return value;
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}
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void GameVars::setSubVar(uint32 nameHash, uint32 subNameHash, uint32 value) {
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int16 varIndex = getSubVarIndex(0, nameHash);
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int16 subVarIndex = getSubVarIndex(varIndex, subNameHash);
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_vars[subVarIndex].value = value;
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}
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int16 GameVars::addVar(uint32 nameHash, uint32 value) {
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GameVar gameVar;
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gameVar.nameHash = nameHash;
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gameVar.value = value;
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gameVar.firstIndex = -1;
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gameVar.nextIndex = -1;
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_vars.push_back(gameVar);
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return _vars.size() - 1;
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}
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int16 GameVars::findSubVarIndex(int16 varIndex, uint32 subNameHash) {
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for (int16 nextIndex = _vars[varIndex].firstIndex; nextIndex != -1; nextIndex = _vars[nextIndex].nextIndex)
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if (_vars[nextIndex].nameHash == subNameHash)
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return nextIndex;
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return -1;
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}
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int16 GameVars::addSubVar(int16 varIndex, uint32 subNameHash, uint32 value) {
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int16 nextIndex = _vars[varIndex].firstIndex;
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int16 subVarIndex;
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if (nextIndex == -1) {
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subVarIndex = addVar(subNameHash, value);
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_vars[varIndex].firstIndex = subVarIndex;
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} else {
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while (_vars[nextIndex].nextIndex != -1)
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nextIndex = _vars[nextIndex].nextIndex;
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subVarIndex = addVar(subNameHash, value);
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_vars[nextIndex].nextIndex = subVarIndex;
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}
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return subVarIndex;
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}
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int16 GameVars::getSubVarIndex(int16 varIndex, uint32 subNameHash) {
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int16 subVarIndex = findSubVarIndex(varIndex, subNameHash);
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if (subVarIndex == -1)
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subVarIndex = addSubVar(varIndex, subNameHash, 0);
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return subVarIndex;
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}
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void GameVars::dumpVars(Console *con) {
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for (Common::Array<GameVar>::iterator it = _vars.begin(); it != _vars.end(); ++it) {
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GameVar gameVar = *it;
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con->debugPrintf("hash: %08X, var: %08X, first index: %3d, next index: %3d\n", gameVar.nameHash, gameVar.value, gameVar.firstIndex, gameVar.nextIndex);
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}
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}
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} // End of namespace Neverhood
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