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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 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/debug.h"
#include "common/savefile.h"
#include "sludge/allfiles.h"
#include "sludge/fileset.h"
#include "sludge/moreio.h"
#include "sludge/newfatal.h"
#include "sludge/objtypes.h"
#include "sludge/people.h"
#include "sludge/sludge.h"
#include "sludge/variable.h"
namespace Sludge {
const char *typeName[] = { "undefined", "number", "user function", "string",
"built-in function", "file", "stack", "object type", "animation",
"costume" };
void Variable::unlinkVar() {
switch (varType) {
case SVT_STRING:
delete []varData.theString;
varData.theString = NULL;
break;
case SVT_STACK:
varData.theStack->timesUsed--;
if (varData.theStack->timesUsed <= 0) {
while (varData.theStack->first)
trimStack(varData.theStack->first);
delete varData.theStack;
varData.theStack = NULL;
}
break;
case SVT_FASTARRAY:
varData.fastArray->timesUsed--;
if (varData.theStack->timesUsed <= 0) {
delete varData.fastArray->fastVariables;
delete[] varData.fastArray;
varData.fastArray = NULL;
}
break;
case SVT_ANIM:
if (varData.animHandler) {
delete varData.animHandler;
varData.animHandler = nullptr;
}
break;
default:
break;
}
}
void Variable::setVariable(VariableType vT, int value) {
unlinkVar();
varType = vT;
varData.intValue = value;
}
void Variable::makeAnimationVariable(PersonaAnimation *i) {
unlinkVar();
varType = SVT_ANIM;
varData.animHandler = i;
}
PersonaAnimation *Variable::getAnimationFromVar() {
if (varType == SVT_ANIM)
return new PersonaAnimation(varData.animHandler);
if (varType == SVT_INT && varData.intValue == 0)
return new PersonaAnimation();
fatal("Expecting an animation variable; found Variable of type", typeName[varType]);
return NULL;
}
void Variable::makeCostumeVariable(Persona *i) {
unlinkVar();
varType = SVT_COSTUME;
varData.costumeHandler = i;
}
Persona *Variable::getCostumeFromVar() {
Persona *p = NULL;
switch (varType) {
case SVT_ANIM:
p = new Persona;
if (!checkNew(p))
return NULL;
p->numDirections = 1;
p->animation = new PersonaAnimation *[3];
if (!checkNew(p->animation))
return NULL;
for (int iii = 0; iii < 3; iii++)
p->animation[iii] = new PersonaAnimation(varData.animHandler);
break;
case SVT_COSTUME:
return varData.costumeHandler;
break;
default:
fatal("Expecting an animation variable; found Variable of type", typeName[varType]);
}
return p;
}
int StackHandler::getStackSize() const {
int r = 0;
VariableStack *a = first;
while (a) {
r++;
a = a->next;
}
return r;
}
bool StackHandler::getSavedGamesStack(const Common::String &ext) {
// Make pattern
uint len = ext.size();
Common::String pattern = "*";
pattern += ext;
// Get all saved files
Common::StringArray sa = g_system->getSavefileManager()->listSavefiles(pattern);
// Save file names to stacks
Variable newName;
newName.varType = SVT_NULL;
Common::StringArray::iterator it;
for (it = sa.begin(); it != sa.end(); ++it) {
(*it).erase((*it).size() - len, len);
newName.makeTextVar((*it));
if (!addVarToStack(newName, first))
return false;
if (last == NULL)
last = first;
}
return true;
}
bool Variable::copyStack(const Variable &from) {
varType = SVT_STACK;
varData.theStack = new StackHandler;
if (!checkNew(varData.theStack))
return false;
varData.theStack->first = NULL;
varData.theStack->last = NULL;
varData.theStack->timesUsed = 1;
VariableStack *a = from.varData.theStack->first;
while (a) {
addVarToStack(a->thisVar, varData.theStack->first);
if (varData.theStack->last == NULL) {
varData.theStack->last = varData.theStack->first;
}
a = a->next;
}
return true;
}
void Variable::addVariablesInSecond(const Variable &other) {
if (other.varType == SVT_INT && varType == SVT_INT) {
varData.intValue += other.varData.intValue;
} else {
Common::String string1 = other.getTextFromAnyVar();
Common::String string2 = getTextFromAnyVar();
unlinkVar();
varData.theString = createCString(string1 + string2);
varType = SVT_STRING;
}
}
int Variable::compareVars(const Variable &other) const {
int re = 0;
if (other.varType == varType) {
switch (other.varType) {
case SVT_NULL:
re = 1;
break;
case SVT_COSTUME:
re = (other.varData.costumeHandler == varData.costumeHandler);
break;
case SVT_ANIM:
re = (other.varData.animHandler == varData.animHandler);
break;
case SVT_STRING:
re = (strcmp(other.varData.theString, varData.theString) == 0);
break;
case SVT_STACK:
re = (other.varData.theStack == varData.theStack);
break;
default:
re = (other.varData.intValue == varData.intValue);
}
}
return re;
}
void Variable::compareVariablesInSecond(const Variable &other) {
setVariable(SVT_INT, compareVars(other));
}
void Variable::makeTextVar(const Common::String &txt) {
unlinkVar();
varType = SVT_STRING;
varData.theString = createCString(txt);
}
bool Variable::loadStringToVar(int value) {
makeTextVar(g_sludge->_resMan->getNumberedString(value));
return (bool)(varData.theString != NULL);
}
Common::String Variable::getTextFromAnyVar() const {
switch (varType) {
case SVT_STRING:
return varData.theString;
case SVT_FASTARRAY: {
Common::String builder = "FAST:";
Common::String builder2 = "";
Common::String grabText = "";
for (int i = 0; i < varData.fastArray->size; i++) {
builder2 = builder + " ";
grabText = varData.fastArray->fastVariables[i].getTextFromAnyVar();
builder.clear();
builder = builder2 + grabText;
}
return builder;
}
case SVT_STACK: {
Common::String builder = "ARRAY:";
Common::String builder2 = "";
Common::String grabText = "";
VariableStack *stacky = varData.theStack->first;
while (stacky) {
builder2 = builder + " ";
grabText = stacky->thisVar.getTextFromAnyVar();
builder.clear();
builder = builder2 + grabText;
stacky = stacky->next;
}
return builder;
}
case SVT_INT: {
Common::String buff = Common::String::format("%i", varData.intValue);
return buff;
}
case SVT_FILE: {
return g_sludge->_resMan->resourceNameFromNum(varData.intValue);
}
case SVT_OBJTYPE: {
ObjectType *thisType = g_sludge->_objMan->findObjectType(varData.intValue);
if (thisType)
return thisType->screenName;
break;
}
default:
break;
}
return typeName[varType];
}
bool Variable::getBoolean() const {
switch (varType) {
case SVT_NULL:
return false;
case SVT_INT:
return (bool)(varData.intValue != 0);
case SVT_STACK:
return (bool)(varData.theStack->first != NULL);
case SVT_STRING:
return (bool)(varData.theString[0] != 0);
case SVT_FASTARRAY:
return (bool)(varData.fastArray->size != 0);
default:
break;
}
return true;
}
bool Variable::copyMain(const Variable &from) {
varType = from.varType;
switch (varType) {
case SVT_INT:
case SVT_FUNC:
case SVT_BUILT:
case SVT_FILE:
case SVT_OBJTYPE:
varData.intValue = from.varData.intValue;
return true;
case SVT_FASTARRAY:
varData.fastArray = from.varData.fastArray;
varData.fastArray->timesUsed++;
return true;
case SVT_STRING:
varData.theString = createCString(from.varData.theString);
return varData.theString ? true : false;
case SVT_STACK:
varData.theStack = from.varData.theStack;
varData.theStack->timesUsed++;
return true;
case SVT_COSTUME:
varData.costumeHandler = from.varData.costumeHandler;
return true;
case SVT_ANIM:
varData.animHandler = new PersonaAnimation(from.varData.animHandler);
return true;
case SVT_NULL:
return true;
default:
break;
}
fatal("Unknown value type");
return false;
}
bool Variable::copyFrom(const Variable &from) {
unlinkVar();
return copyMain(from);
}
Variable *FastArrayHandler::fastArrayGetByIndex(uint theIndex) {
if ((int)theIndex >= size)
return NULL;
return &fastVariables[theIndex];
}
bool Variable::makeFastArraySize(int size) {
if (size < 0)
return fatal("Can't create a fast array with a negative number of elements!");
unlinkVar();
varType = SVT_FASTARRAY;
varData.fastArray = new FastArrayHandler;
if (!checkNew(varData.fastArray))
return false;
varData.fastArray->fastVariables = new Variable[size];
if (!checkNew(varData.fastArray->fastVariables))
return false;
varData.fastArray->size = size;
varData.fastArray->timesUsed = 1;
return true;
}
bool Variable::makeFastArrayFromStack(const StackHandler *stacky) {
int size = stacky->getStackSize();
if (!makeFastArraySize(size))
return false;
// Now let's fill up the new array
VariableStack *allV = stacky->first;
size = 0;
while (allV) {
varData.fastArray->fastVariables[size].copyMain(allV->thisVar);
size++;
allV = allV->next;
}
return true;
}
bool addVarToStack(const Variable &va, VariableStack *&thisStack) {
VariableStack *newStack = new VariableStack;
if (!checkNew(newStack))
return false;
if (!newStack->thisVar.copyMain(va))
return false;
newStack->next = thisStack;
thisStack = newStack;
//debugC(2, kSludgeDebugStackMachine, "Variable %s was added to stack", getTextFromAnyVar(va));
return true;
}
bool addVarToStackQuick(Variable &va, VariableStack *&thisStack) {
VariableStack *newStack = new VariableStack;
if (!checkNew(newStack))
return false;
// if (! copyMain (va, newStack -> thisVar)) return false;
memcpy(&(newStack->thisVar), &va, sizeof(Variable));
va.varType = SVT_NULL;
newStack->next = thisStack;
thisStack = newStack;
//debugC(2, kSludgeDebugStackMachine, "Variable %s was added to stack quick", getTextFromAnyVar(va));
return true;
}
bool VariableStack::stackSetByIndex(uint theIndex, const Variable &va) {
VariableStack *vS = this;
while (theIndex--) {
vS = vS->next;
if (!vS)
return fatal("Index past end of stack.");
}
return vS->thisVar.copyFrom(va);
}
Variable *VariableStack::stackGetByIndex(uint theIndex) {
VariableStack *vS = this;
while (theIndex--) {
vS = vS->next;
if (!vS) {
return NULL;
}
}
return &(vS->thisVar);
}
int deleteVarFromStack(const Variable &va, VariableStack *&thisStack, bool allOfEm) {
VariableStack **huntVar = &thisStack;
VariableStack *killMe;
int reply = 0;
while (*huntVar) {
if (va.compareVars((*huntVar)->thisVar)) {
killMe = *huntVar;
*huntVar = killMe->next;
killMe->thisVar.unlinkVar();
delete killMe;
if (!allOfEm)
return 1;
reply++;
} else {
huntVar = &((*huntVar)->next);
}
}
return reply;
}
// Would be a LOT better just to keep this up to date in the above function... ah well
VariableStack *VariableStack::stackFindLast() {
VariableStack *hunt = this;
while (hunt->next)
hunt = hunt->next;
return hunt;
}
bool Variable::getValueType(int &toHere, VariableType vT) const {
if (varType != vT) {
Common::String e1 = "Can only perform specified operation on a value which is of type ";
e1 += typeName[vT];
Common::String e2 = "... value supplied was of type ";
e2 += typeName[varType];
fatal(e1, e2);
return false;
}
toHere = varData.intValue;
return true;
}
void trimStack(VariableStack *&stack) {
VariableStack *killMe = stack;
stack = stack->next;
//debugC(2, kSludgeDebugStackMachine, "Variable %s was removed from stack", getTextFromAnyVar(killMe->thisVar));
// When calling this, we've ALWAYS checked that stack != NULL
killMe->thisVar.unlinkVar();
delete killMe;
}
//----------------------------------------------------------------------
// Globals (so we know what's saved already and what's a reference
//----------------------------------------------------------------------
struct stackLibrary {
StackHandler *stack;
stackLibrary *next;
};
int stackLibTotal = 0;
stackLibrary *stackLib = NULL;
//----------------------------------------------------------------------
// For saving and loading stacks...
//----------------------------------------------------------------------
void saveStack(VariableStack *vs, Common::WriteStream *stream) {
int elements = 0;
int a;
VariableStack *search = vs;
while (search) {
elements++;
search = search->next;
}
stream->writeUint16BE(elements);
search = vs;
for (a = 0; a < elements; a++) {
search->thisVar.save(stream);
search = search->next;
}
}
VariableStack *loadStack(Common::SeekableReadStream *stream, VariableStack **last) {
int elements = stream->readUint16BE();
int a;
VariableStack *first = NULL;
VariableStack **changeMe = &first;
for (a = 0; a < elements; a++) {
VariableStack *nS = new VariableStack;
if (!checkNew(nS))
return NULL;
nS->thisVar.load(stream);
if (last && a == elements - 1) {
*last = nS;
}
nS->next = NULL;
(*changeMe) = nS;
changeMe = &(nS->next);
}
return first;
}
bool saveStackRef(StackHandler *vs, Common::WriteStream *stream) {
stackLibrary *s = stackLib;
int a = 0;
while (s) {
if (s->stack == vs) {
stream->writeByte(1);
stream->writeUint16BE(stackLibTotal - a);
return true;
}
s = s->next;
a++;
}
stream->writeByte(0);
saveStack(vs->first, stream);
s = new stackLibrary;
stackLibTotal++;
if (!checkNew(s))
return false;
s->next = stackLib;
s->stack = vs;
stackLib = s;
return true;
}
void clearStackLib() {
stackLibrary *k;
while (stackLib) {
k = stackLib;
stackLib = stackLib->next;
delete k;
}
stackLibTotal = 0;
}
StackHandler *getStackFromLibrary(int n) {
n = stackLibTotal - n;
while (n) {
stackLib = stackLib->next;
n--;
}
return stackLib->stack;
}
StackHandler *loadStackRef(Common::SeekableReadStream *stream) {
StackHandler *nsh;
if (stream->readByte()) { // It's one we've loaded already...
nsh = getStackFromLibrary(stream->readUint16BE());
nsh->timesUsed++;
} else {
// Load the new stack
nsh = new StackHandler;
if (!checkNew(nsh))
return NULL;
nsh->last = NULL;
nsh->first = loadStack(stream, &nsh->last);
nsh->timesUsed = 1;
// Add it to the library of loaded stacks
stackLibrary *s = new stackLibrary;
if (!checkNew(s))
return NULL;
s->stack = nsh;
s->next = stackLib;
stackLib = s;
stackLibTotal++;
}
return nsh;
}
//----------------------------------------------------------------------
// For saving and loading variables...
//----------------------------------------------------------------------
bool Variable::save(Common::WriteStream *stream) {
stream->writeByte(varType);
switch (varType) {
case SVT_INT:
case SVT_FUNC:
case SVT_BUILT:
case SVT_FILE:
case SVT_OBJTYPE:
stream->writeUint32LE(varData.intValue);
return true;
case SVT_STRING:
writeString(varData.theString, stream);
return true;
case SVT_STACK:
return saveStackRef(varData.theStack, stream);
case SVT_COSTUME:
varData.costumeHandler->save(stream);
return false;
case SVT_ANIM:
varData.animHandler->save(stream);
return false;
case SVT_NULL:
return false;
default:
fatal("Can't save variables of this type:", (varType < SVT_NUM_TYPES) ? typeName[varType] : "bad ID");
}
return true;
}
bool Variable::load(Common::SeekableReadStream *stream) {
varType = (VariableType)stream->readByte();
switch (varType) {
case SVT_INT:
case SVT_FUNC:
case SVT_BUILT:
case SVT_FILE:
case SVT_OBJTYPE:
varData.intValue = stream->readUint32LE();
return true;
case SVT_STRING:
varData.theString = createCString(readString(stream));
return true;
case SVT_STACK:
varData.theStack = loadStackRef(stream);
return true;
case SVT_COSTUME:
varData.costumeHandler = new Persona;
if (!checkNew(varData.costumeHandler))
return false;
varData.costumeHandler->load(stream);
return true;
case SVT_ANIM:
varData.animHandler = new PersonaAnimation;
if (!checkNew(varData.animHandler))
return false;
varData.animHandler->load(stream);
return true;
default:
break;
}
return true;
}
} // End of namespace Sludge
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