/
loc.cpp
2362 lines (1868 loc) · 49.9 KB
/
loc.cpp
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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.
*
*/
/*
* This code is based on original Tony Tough source code
*
* Copyright (c) 1997-2003 Nayma Software
*/
#include "common/memstream.h"
#include "common/scummsys.h"
#include "tony/mpal/mpalutils.h"
#include "tony/adv.h"
#include "tony/loc.h"
#include "tony/tony.h"
namespace Tony {
using namespace ::Tony::MPAL;
/****************************************************************************\
* RMPalette Methods
\****************************************************************************/
/**
* Operator for reading palette information from a data stream.
*
* @param ds Data stream
* @param pal Destination palette
*
* @returns Reference to the data stream
*/
RMDataStream &operator>>(RMDataStream &ds, RMPalette &pal) {
ds.read(pal._data, 1024);
return ds;
}
/****************************************************************************\
* RMSlot Methods
\****************************************************************************/
/**
* Operator for reading slot information from a data stream.
*
* @param ds Data stream
* @param slot Destination slot
*
* @returns Reference to the data stream
*/
RMDataStream &operator>>(RMDataStream &ds, RMPattern::RMSlot &slot) {
slot.readFromStream(ds);
return ds;
}
void RMPattern::RMSlot::readFromStream(RMDataStream &ds, bool bLOX) {
byte type;
// Type
ds >> type;
_type = (RMPattern::RMSlotType)type;
// Dati
ds >> _data;
// Posizione
ds >> _pos;
// Flag generica
ds >> _flag;
}
/****************************************************************************\
* Metodi di RMPattern
\****************************************************************************/
/**
* Operator for reading pattern information from a data stream
*
* @param ds Data stream
* @param pat Destination pattern
*
* @returns Reference to the data stream
*/
RMDataStream &operator>>(RMDataStream &ds, RMPattern &pat) {
pat.readFromStream(ds);
return ds;
}
void RMPattern::readFromStream(RMDataStream &ds, bool bLOX) {
int i;
// Pattern name
if (!bLOX)
ds >> _name;
// Velocity
ds >> _speed;
// Position
ds >> _pos;
// Flag for pattern looping
ds >> _bLoop;
// Number of slots
ds >> _nSlots;
// Create and read the slots
_slots = new RMSlot[_nSlots];
for (i = 0; i < _nSlots && !ds.isError(); i++) {
if (bLOX)
_slots[i].readFromStream(ds, true);
else
_slots[i].readFromStream(ds, false);
}
}
void RMPattern::updateCoord() {
_curPos = _pos + _slots[_nCurSlot].pos();
}
void RMPattern::stopSfx(RMSfx *sfx) {
for (int i = 0; i < _nSlots; i++) {
if (_slots[i]._type == SOUND) {
if (sfx[_slots[i]._data]._name[0] == '_')
sfx[_slots[i]._data].stop();
else if (GLOBALS._bSkipSfxNoLoop)
sfx[_slots[i]._data].stop();
}
}
}
int RMPattern::init(RMSfx *sfx, bool bPlayP0, byte *bFlag) {
int i;
// Read the current time
_nStartTime = g_vm->getTime();
_nCurSlot = 0;
// Find the first frame of the pattern
i = 0;
while (_slots[i]._type != SPRITE) {
assert(i + 1 < _nSlots);
i++;
}
_nCurSlot = i;
_nCurSprite = _slots[i]._data;
if (bFlag)
*bFlag = _slots[i]._flag;
// Calculate the current coordinates
updateCoord();
// Check for sound:
// If the slot is 0, play
// If speed = 0, must playing unless it goes into loop '_', or if specified by the parameter
// If speed != 0, play only the loop
for (i = 0; i < _nSlots; i++) {
if (_slots[i]._type == SOUND) {
if (i == 0) {
if (sfx[_slots[i]._data]._name[0] == '_') {
sfx[_slots[i]._data].setVolume(_slots[i].pos()._x);
sfx[_slots[i]._data].play(true);
} else {
sfx[_slots[i]._data].setVolume(_slots[i].pos()._x);
sfx[_slots[i]._data].play();
}
} else if (_speed == 0) {
if (bPlayP0) {
sfx[_slots[i]._data].setVolume(_slots[i].pos()._x);
sfx[_slots[i]._data].play();
} else if (sfx[_slots[i]._data]._name[0] == '_') {
sfx[_slots[i]._data].setVolume(_slots[i].pos()._x);
sfx[_slots[i]._data].play(true);
}
} else {
if (_bLoop && sfx[_slots[i]._data]._name[0] == '_') {
sfx[_slots[i]._data].setVolume(_slots[i].pos()._x);
sfx[_slots[i]._data].play(true);
}
}
}
}
return _nCurSprite;
}
int RMPattern::update(uint32 hEndPattern, byte &bFlag, RMSfx *sfx) {
int CurTime = g_vm->getTime();
// If the speed is 0, then the pattern never advances
if (_speed == 0) {
CoroScheduler.pulseEvent(hEndPattern);
bFlag = _slots[_nCurSlot]._flag;
return _nCurSprite;
}
// Is it time to change the slots?
while (_nStartTime + _speed <= (uint32)CurTime) {
_nStartTime += _speed;
if (_slots[_nCurSlot]._type == SPRITE)
_nCurSlot++;
if (_nCurSlot == _nSlots) {
_nCurSlot = 0;
bFlag = _slots[_nCurSlot]._flag;
CoroScheduler.pulseEvent(hEndPattern);
// @@@ If there is no loop pattern, and there's a warning that it's the final
// frame, then remain on the last frame
if (!_bLoop) {
_nCurSlot = _nSlots - 1;
bFlag = _slots[_nCurSlot]._flag;
return _nCurSprite;
}
}
for (;;) {
switch (_slots[_nCurSlot]._type) {
case SPRITE:
// Read the next sprite
_nCurSprite = _slots[_nCurSlot]._data;
// Update the parent & child coordinates
updateCoord();
break;
case SOUND:
if (sfx != NULL) {
sfx[_slots[_nCurSlot]._data].setVolume(_slots[_nCurSlot].pos()._x);
if (sfx[_slots[_nCurSlot]._data]._name[0] != '_')
sfx[_slots[_nCurSlot]._data].play(false);
else
sfx[_slots[_nCurSlot]._data].play(true);
}
break;
case COMMAND:
assert(0);
break;
default:
assert(0);
break;
}
if (_slots[_nCurSlot]._type == SPRITE)
break;
_nCurSlot++;
}
}
// Return the current sprite
bFlag = _slots[_nCurSlot]._flag;
return _nCurSprite;
}
RMPattern::RMPattern() {
_slots = NULL;
_speed = 0;
_bLoop = 0;
_nSlots = 0;
_nCurSlot = 0;
_nCurSprite = 0;
_nStartTime = 0;
_slots = NULL;
}
RMPattern::~RMPattern() {
if (_slots != NULL) {
delete[] _slots;
_slots = NULL;
}
}
/****************************************************************************\
* RMSprite Methods
\****************************************************************************/
/**
* Operator for reading sprite information from a data stream.
*
* @param ds Data stream
* @param sprite Destination slot
*
* @returns Reference to the data stream
*/
RMDataStream &operator>>(RMDataStream &ds, RMSprite &sprite) {
sprite.readFromStream(ds);
return ds;
}
void RMSprite::init(RMGfxSourceBuffer *buf) {
_buf = buf;
}
void RMSprite::LOXGetSizeFromStream(RMDataStream &ds, int *dimx, int *dimy) {
int pos = ds.pos();
ds >> *dimx >> *dimy;
ds.seek(pos, ds.START);
}
void RMSprite::getSizeFromStream(RMDataStream &ds, int *dimx, int *dimy) {
int pos = ds.pos();
ds >> _name;
ds >> *dimx >> *dimy;
ds.seek(pos, ds.START);
}
void RMSprite::readFromStream(RMDataStream &ds, bool bLOX) {
int dimx, dimy;
// Sprite name
if (!bLOX)
ds >> _name;
// Dimensions
ds >> dimx >> dimy;
// Bounding box
ds >> _rcBox;
// Unused space
if (!bLOX)
ds += 32;
// Create buffer and read
_buf->init(ds, dimx, dimy);
}
void RMSprite::draw(CORO_PARAM, RMGfxTargetBuffer &bigBuf, RMGfxPrimitive *prim) {
_buf->draw(coroParam, bigBuf, prim);
}
void RMSprite::setPalette(byte *buf) {
((RMGfxSourceBufferPal *)_buf)->loadPalette(buf);
}
RMSprite::RMSprite() {
_buf = NULL;
}
RMSprite::~RMSprite() {
if (_buf) {
delete _buf;
_buf = NULL;
}
}
/****************************************************************************\
* RMSfx Methods
\****************************************************************************/
/**
* Operator for reading SFX information from a data stream.
*
* @param ds Data stream
* @param sfx Destination SFX
*
* @returns Reference to the data stream
*/
RMDataStream &operator>>(RMDataStream &ds, RMSfx &sfx) {
sfx.readFromStream(ds);
return ds;
}
void RMSfx::readFromStream(RMDataStream &ds, bool bLOX) {
int size;
// sfx name
ds >> _name;
ds >> size;
// Read the entire buffer into a MemoryReadStream
byte *buffer = (byte *)malloc(size);
ds.read(buffer, size);
Common::SeekableReadStream *stream = new Common::MemoryReadStream(buffer, size, DisposeAfterUse::YES);
// Create the sound effect
_fx = g_vm->createSFX(stream);
_fx->setLoop(false);
}
RMSfx::RMSfx() {
_fx = NULL;
_bPlayingLoop = false;
}
RMSfx::~RMSfx() {
if (_fx) {
_fx->release();
_fx = NULL;
}
}
void RMSfx::play(bool bLoop) {
if (_fx && !_bPlayingLoop) {
_fx->setLoop(bLoop);
_fx->play();
if (bLoop)
_bPlayingLoop = true;
}
}
void RMSfx::setVolume(int vol) {
if (_fx) {
_fx->setVolume(vol);
}
}
void RMSfx::pause(bool bPause) {
if (_fx) {
_fx->pause(bPause);
}
}
void RMSfx::stop() {
if (_fx) {
_fx->stop();
_bPlayingLoop = false;
}
}
/****************************************************************************\
* RMItem Methods
\****************************************************************************/
/**
* Operator for reading item information from a data stream.
*
* @param ds Data stream
* @param tem Destination item
*
* @returns Reference to the data stream
*/
RMDataStream &operator>>(RMDataStream &ds, RMItem &item) {
item.readFromStream(ds);
return ds;
}
RMGfxSourceBuffer *RMItem::newItemSpriteBuffer(int dimx, int dimy, bool bPreRLE) {
if (_cm == CM_256) {
RMGfxSourceBuffer8RLE *spr;
if (_FX == 2) { // AB
spr = new RMGfxSourceBuffer8RLEWordAB;
} else if (_FX == 1) { // OMBRA+AA
if (dimx == -1 || dimx > 255)
spr = new RMGfxSourceBuffer8RLEWordAA;
else
spr = new RMGfxSourceBuffer8RLEByteAA;
spr->setAlphaBlendColor(_FXparm);
if (bPreRLE)
spr->setAlreadyCompressed();
} else {
if (dimx == -1 || dimx > 255)
spr = new RMGfxSourceBuffer8RLEWord;
else
spr = new RMGfxSourceBuffer8RLEByte;
if (bPreRLE)
spr->setAlreadyCompressed();
}
return spr;
} else
return new RMGfxSourceBuffer16;
}
bool RMItem::isIn(const RMPoint &pt, int *size) {
RMRect rc;
if (!_bIsActive)
return false;
// Search for the right bounding box to use - use the sprite's if it has one, otherwise use the generic one
if (_nCurPattern != 0 && !_sprites[_nCurSprite]._rcBox.isEmpty())
rc = _sprites[_nCurSprite]._rcBox + calculatePos();
else if (!_rcBox.isEmpty())
rc = _rcBox;
// If no box, return immediately
else
return false;
if (size != NULL)
*size = rc.size();
return rc.ptInRect(pt + _curScroll);
}
void RMItem::readFromStream(RMDataStream &ds, bool bLOX) {
int i, dimx, dimy;
byte cm;
// MPAL code
ds >> _mpalCode;
// Object name
ds >> _name;
// Z (signed)
ds >> _z;
// Parent position
ds >> _pos;
// Hotspot
ds >> _hot;
// Bounding box
ds >> _rcBox;
// Number of sprites, sound effects, and patterns
ds >> _nSprites >> _nSfx >> _nPatterns;
// Color mode
ds >> cm;
_cm = (RMColorMode)cm;
// Flag for the presence of custom palette differences
ds >> _bPal;
if (_cm == CM_256) {
// If there is a palette, read it in
if (_bPal)
ds >> _pal;
}
// MPAL data
if (!bLOX)
ds += 20;
ds >> _FX;
ds >> _FXparm;
if (!bLOX)
ds += 106;
// Create sub-classes
if (_nSprites > 0)
_sprites = new RMSprite[_nSprites];
if (_nSfx > 0)
_sfx = new RMSfx[_nSfx];
_patterns = new RMPattern[_nPatterns + 1];
// Read in class data
if (!ds.isError())
for (i = 0; i < _nSprites && !ds.isError(); i++) {
// Download the sprites
if (bLOX) {
_sprites[i].LOXGetSizeFromStream(ds, &dimx, &dimy);
_sprites[i].init(newItemSpriteBuffer(dimx, dimy, true));
_sprites[i].readFromStream(ds, true);
} else {
_sprites[i].getSizeFromStream(ds, &dimx, &dimy);
_sprites[i].init(newItemSpriteBuffer(dimx, dimy, false));
_sprites[i].readFromStream(ds, false);
}
if (_cm == CM_256 && _bPal)
_sprites[i].setPalette(_pal._data);
}
if (!ds.isError())
for (i = 0; i < _nSfx && !ds.isError(); i++) {
if (bLOX)
_sfx[i].readFromStream(ds, true);
else
_sfx[i].readFromStream(ds, false);
}
// Read the pattern from pattern 1
if (!ds.isError())
for (i = 1; i <= _nPatterns && !ds.isError(); i++) {
if (bLOX)
_patterns[i].readFromStream(ds, true);
else
_patterns[i].readFromStream(ds, false);
}
// Initialize the current pattern
if (_bInitCurPattern)
setPattern(mpalQueryItemPattern(_mpalCode));
// Initailise the current activation state
_bIsActive = mpalQueryItemIsActive(_mpalCode);
}
RMGfxPrimitive *RMItem::newItemPrimitive() {
return new RMGfxPrimitive(this);
}
void RMItem::setScrollPosition(const RMPoint &scroll) {
_curScroll = scroll;
}
bool RMItem::doFrame(RMGfxTargetBuffer *bigBuf, bool bAddToList) {
int oldSprite = _nCurSprite;
// Pattern 0 = Do not draw anything!
if (_nCurPattern == 0)
return false;
// We do an update of the pattern, which also returns the current frame
if (_nCurPattern != 0) {
_nCurSprite = _patterns[_nCurPattern].update(_hEndPattern, _bCurFlag, _sfx);
// WORKAROUND: Currently, m_nCurSprite = -1 is used to flag that an item should be removed.
// However, this seems to be done inside a process waiting on an event pulsed inside the pattern
// Update method. So the value of m_nCurSprite = -1 is being destroyed with the return value
// replacing it. It may be that the current coroutine PulseEvent implementation is wrong somehow.
// In any case, a special check here is done for items that have ended
if (_nCurPattern == 0)
_nCurSprite = -1;
}
// If the function returned -1, it means that the pattern has finished
if (_nCurSprite == -1) {
// We have pattern 0, so leave. The class will self de-register from the OT list
_nCurPattern = 0;
return false;
}
// If we are not in the OT list, add ourselves
if (!_nInList && bAddToList)
bigBuf->addPrim(newItemPrimitive());
return oldSprite != _nCurSprite;
}
RMPoint RMItem::calculatePos() {
return _pos + _patterns[_nCurPattern].pos();
}
void RMItem::draw(CORO_PARAM, RMGfxTargetBuffer &bigBuf, RMGfxPrimitive *prim) {
CORO_BEGIN_CONTEXT;
CORO_END_CONTEXT(_ctx);
CORO_BEGIN_CODE(_ctx);
// If CurSprite == -1, then the pattern is finished
if (_nCurSprite == -1)
return;
// Set the flag
prim->setFlag(_bCurFlag);
// Offset direction for scrolling
prim->getDst().offset(-_curScroll);
// We must offset the cordinates of the item inside the primitive
// It is estimated as nonno + (babbo + figlio)
prim->getDst().offset(calculatePos());
// No stretching, please
prim->setStretch(false);
// Now we turn to the generic surface drawing routines
CORO_INVOKE_2(_sprites[_nCurSprite].draw, bigBuf, prim);
CORO_END_CODE;
}
void RMItem::removeThis(CORO_PARAM, bool &result) {
// Remove from the OT list if the current frame is -1 (pattern over)
result = (_nCurSprite == -1);
}
void RMItem::setStatus(int nStatus) {
_bIsActive = (nStatus > 0);
}
void RMItem::setPattern(int nPattern, bool bPlayP0) {
assert(nPattern >= 0 && nPattern <= _nPatterns);
if (_sfx) {
if (_nCurPattern > 0)
_patterns[_nCurPattern].stopSfx(_sfx);
}
// Remember the current pattern
_nCurPattern = nPattern;
// Start the pattern to start the animation
if (_nCurPattern != 0)
_nCurSprite = _patterns[_nCurPattern].init(_sfx, bPlayP0, &_bCurFlag);
else {
_nCurSprite = -1;
// Look for the sound effect for pattern 0
if (bPlayP0) {
for (int i = 0; i < _nSfx; i++) {
if (strcmp(_sfx[i]._name, "p0") == 0)
_sfx[i].play();
}
}
}
}
bool RMItem::getName(RMString &name) {
char buf[256];
mpalQueryItemName(_mpalCode, buf);
name = buf;
if (buf[0] == '\0')
return false;
return true;
}
void RMItem::unload() {
if (_patterns != NULL) {
delete[] _patterns;
_patterns = NULL;
}
if (_sprites != NULL) {
delete[] _sprites;
_sprites = NULL;
}
if (_sfx != NULL) {
delete[] _sfx;
_sfx = NULL;
}
}
RMItem::RMItem() {
_bCurFlag = 0;
_patterns = NULL;
_sprites = NULL;
_sfx = NULL;
_curScroll.set(0, 0);
_bInitCurPattern = true;
_nCurPattern = 0;
_z = 0;
_cm = CM_256;
_FX = 0;
_FXparm = 0;
_mpalCode = 0;
_nSprites = 0;
_nSfx = 0;
_nPatterns = 0;
_bPal = 0;
_nCurSprite = 0;
_bIsActive = false;
memset(_pal._data, 0, sizeof(_pal._data));
_hEndPattern = CoroScheduler.createEvent(false, false);
}
RMItem::~RMItem() {
unload();
CoroScheduler.closeEvent(_hEndPattern);
}
void RMItem::waitForEndPattern(CORO_PARAM, uint32 hCustomSkip) {
CORO_BEGIN_CONTEXT;
uint32 h[2];
CORO_END_CONTEXT(_ctx);
CORO_BEGIN_CODE(_ctx);
if (_nCurPattern != 0) {
if (hCustomSkip == CORO_INVALID_PID_VALUE)
CORO_INVOKE_2(CoroScheduler.waitForSingleObject, _hEndPattern, CORO_INFINITE);
else {
_ctx->h[0] = hCustomSkip;
_ctx->h[1] = _hEndPattern;
CORO_INVOKE_4(CoroScheduler.waitForMultipleObjects, 2, &_ctx->h[0], false, CORO_INFINITE);
}
}
CORO_END_CODE;
}
void RMItem::changeHotspot(const RMPoint &pt) {
_hot = pt;
}
void RMItem::playSfx(int nSfx) {
if (nSfx < _nSfx)
_sfx[nSfx].play();
}
void RMItem::pauseSound(bool bPause) {
int i;
for (i = 0; i < _nSfx; i++)
_sfx[i].pause(bPause);
}
/****************************************************************************\
* RMWipe Methods
\****************************************************************************/
RMWipe::RMWipe() {
_hUnregistered = CoroScheduler.createEvent(false, false);
_hEndOfFade = CoroScheduler.createEvent(false, false);
_bMustRegister = false;
_bUnregister = false;
_bEndFade = false;
_bFading = false;
_nFadeStep = 0;
}
RMWipe::~RMWipe() {
CoroScheduler.closeEvent(_hUnregistered);
CoroScheduler.closeEvent(_hEndOfFade);
}
int RMWipe::priority() {
return 200;
}
void RMWipe::Unregister() {
RMGfxTask::Unregister();
assert(_nInList == 0);
CoroScheduler.setEvent(_hUnregistered);
}
void RMWipe::removeThis(CORO_PARAM, bool &result) {
result = _bUnregister;
}
void RMWipe::waitForFadeEnd(CORO_PARAM) {
CORO_BEGIN_CONTEXT;
CORO_END_CONTEXT(_ctx);
CORO_BEGIN_CODE(_ctx);
CORO_INVOKE_2(CoroScheduler.waitForSingleObject, _hEndOfFade, CORO_INFINITE);
_bEndFade = true;
_bFading = false;
CORO_INVOKE_0(mainWaitFrame);
CORO_INVOKE_0(mainWaitFrame);
CORO_END_CODE;
}
void RMWipe::closeFade() {
_wip0r.unload();
}
void RMWipe::initFade(int type) {
// Activate the fade
_bUnregister = false;
_bEndFade = false;
_nFadeStep = 0;
_bMustRegister = true;
RMRes res(RES_W_CIRCLE);
RMDataStream ds;
ds.openBuffer(res);
ds >> _wip0r;
ds.close();
_wip0r.setPattern(1);
_bFading = true;
}
void RMWipe::doFrame(RMGfxTargetBuffer &bigBuf) {
if (_bMustRegister) {
bigBuf.addPrim(new RMGfxPrimitive(this));
_bMustRegister = false;
}
if (_bFading) {
_wip0r.doFrame(&bigBuf, false);
_nFadeStep++;
if (_nFadeStep == 10) {
CoroScheduler.setEvent(_hEndOfFade);
}
}
}
void RMWipe::draw(CORO_PARAM, RMGfxTargetBuffer &bigBuf, RMGfxPrimitive *prim) {
CORO_BEGIN_CONTEXT;
CORO_END_CONTEXT(_ctx);
CORO_BEGIN_CODE(_ctx);
if (_bFading) {
CORO_INVOKE_2(_wip0r.draw, bigBuf, prim);
}
if (_bEndFade)
Common::fill((byte *)bigBuf, (byte *)bigBuf + bigBuf.getDimx() * bigBuf.getDimy() * 2, 0x0);
CORO_END_CODE;
}
/****************************************************************************\
* RMCharacter Methods
\****************************************************************************/
/****************************************************************************/
/* Find the shortest path between two nodes of the graph connecting the BOX */
/* Returns path along the vector path path[] */
/****************************************************************************/
short RMCharacter::findPath(short source, short destination) {
static RMBox BOX[MAXBOXES]; // Matrix of adjacent boxes
static short COSTO[MAXBOXES]; // Cost per node
static short VALIDO[MAXBOXES]; // 0:Invalid 1:Valid 2:Saturated
static short NEXT[MAXBOXES]; // Prossimo Nodo
short i, j, k, costominimo, fine, errore = 0;
RMBoxLoc *cur;
g_system->lockMutex(_csMove);
if (source == -1 || destination == -1) {
g_system->unlockMutex(_csMove);
return 0;
}
// Get the boxes
cur = _theBoxes->getBoxes(_curLocation);
// Make a backup copy to work on
for (i = 0; i < cur->_numbBox; i++)
memcpy(&BOX[i], &cur->_boxes[i], sizeof(RMBox));
// Invalidate all nodes
for (i = 0; i < cur->_numbBox; i++)
VALIDO[i] = 0;
// Prepare source and variables for the procedure
COSTO[source] = 0;
VALIDO[source] = 1;
fine = 0;
// Find the shortest path
while (!fine) {
costominimo = 32000; // Reset the minimum cost
errore = 1; // Possible error
// 1st cycle: explore possible new nodes
for (i = 0; i < cur->_numbBox; i++)
if (VALIDO[i] == 1) {
errore = 0; // Failure de-bunked
j = 0;
while (((BOX[i]._adj[j]) != 1) && (j < cur->_numbBox))
j++;
if (j >= cur->_numbBox)
VALIDO[i] = 2; // nodo saturated?