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game_v1.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2004 Ivan Dubrov
 * Copyright (C) 2004-2006 The ScummVM project
 *
 * 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.
 *
 * $URL: https://svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-9-1/engines/gob/game_v1.cpp $
 * $Id: game_v1.cpp 23079 2006-06-13 08:10:54Z drmccoy $
 *
 */

#include "common/stdafx.h"
#include "common/endian.h"
#include "common/stream.h"

#include "gob/gob.h"
#include "gob/global.h"
#include "gob/game.h"
#include "gob/video.h"
#include "gob/dataio.h"
#include "gob/pack.h"
#include "gob/scenery.h"
#include "gob/inter.h"
#include "gob/parse.h"
#include "gob/draw.h"
#include "gob/mult.h"
#include "gob/util.h"
#include "gob/goblin.h"
#include "gob/cdrom.h"
#include "gob/music.h"

namespace Gob {

Game_v1::Game_v1(GobEngine *vm) : Game(vm) {
}

void Game_v1::playTot(int16 skipPlay) {
      char savedTotName[20];
      int16 *oldCaptureCounter;
      int16 *oldBreakFrom;
      int16 *oldNestLevel;
      int16 _captureCounter;
      int16 breakFrom;
      int16 nestLevel;
      int32 variablesCount;
      char *filePtr;
      char *savedIP;
      int16 i;

      oldNestLevel = _vm->_inter->_nestLevel;
      oldBreakFrom = _vm->_inter->_breakFromLevel;
      oldCaptureCounter = _vm->_scenery->_pCaptureCounter;
      savedIP = _vm->_global->_inter_execPtr;

      _vm->_inter->_nestLevel = &nestLevel;
      _vm->_inter->_breakFromLevel = &breakFrom;
      _vm->_scenery->_pCaptureCounter = &_captureCounter;
      strcpy(savedTotName, _curTotFile);

      if (skipPlay == 0) {
            while (!_vm->_quitRequested) {
                  for (i = 0; i < 4; i++) {
                        _vm->_draw->_fontToSprite[i].sprite = -1;
                        _vm->_draw->_fontToSprite[i].base = -1;
                        _vm->_draw->_fontToSprite[i].width = -1;
                        _vm->_draw->_fontToSprite[i].height = -1;
                  }

                  if (_vm->_features & GF_MAC)
                        _vm->_music->stopPlay();
                  else
                        _vm->_cdrom->stopPlaying();
                  _vm->_draw->animateCursor(4);
                  _vm->_inter->initControlVars();
                  _vm->_mult->initAll();
                  _vm->_mult->zeroMultData();

                  for (i = 0; i < 20; i++)
                        _vm->_draw->_spritesArray[i] = 0;

                  _vm->_draw->_spritesArray[20] = _vm->_draw->_frontSurface;
                  _vm->_draw->_spritesArray[21] = _vm->_draw->_backSurface;
                  _vm->_draw->_spritesArray[23] = _vm->_draw->_cursorSprites;

                  for (i = 0; i < 20; i++)
                        _soundSamples[i] = 0;

                  _totTextData = 0;
                  _totResourceTable = 0;
                  _imFileData = 0;
                  _extTable = 0;
                  _extHandle = -1;

                  _totToLoad[0] = 0;

                  if (_curTotFile[0] == 0 && _totFileData == 0)
                        break;

                  loadTotFile(_curTotFile);
                  if (_totFileData == 0) {
                        _vm->_draw->blitCursor();
                        break;
                  }

                  strcpy(_curImaFile, _curTotFile);
                  strcpy(_curExtFile, _curTotFile);

                  _curImaFile[strlen(_curImaFile) - 4] = 0;
                  strcat(_curImaFile, ".ima");

                  _curExtFile[strlen(_curExtFile) - 4] = 0;
                  strcat(_curExtFile, ".ext");

                  debugC(4, DEBUG_FILEIO, "IMA: %s", _curImaFile);
                  debugC(4, DEBUG_FILEIO, "EXT: %s", _curExtFile);

                  filePtr = (char *)_totFileData + 0x30;

                  _totTextData = 0;
                  if (READ_LE_UINT32(filePtr) != (uint32)-1) {
                        _totTextData = new TotTextTable;
                        _totTextData->dataPtr = (_totFileData + READ_LE_UINT32((char *)_totFileData + 0x30));
                        Common::MemoryReadStream totTextData((byte *) _totTextData->dataPtr, 4294967295U);

                        _totTextData->itemsCount = totTextData.readSint16LE();

                        _totTextData->items = new TotTextItem[_totTextData->itemsCount];
                        for (i = 0; i < _totTextData->itemsCount; ++i) {
                              _totTextData->items[i].offset = totTextData.readSint16LE();
                              _totTextData->items[i].size = totTextData.readSint16LE();
                        }
                  }

                  filePtr = (char *)_totFileData + 0x34;
                  _totResourceTable = 0;
                  if (READ_LE_UINT32(filePtr) != (uint32)-1) {
                        _totResourceTable = new TotResTable;
                        _totResourceTable->dataPtr = _totFileData + READ_LE_UINT32((char *)_totFileData + 0x34);
                        Common::MemoryReadStream totResTable((byte *) _totResourceTable->dataPtr, 4294967295U);

                        _totResourceTable->itemsCount = totResTable.readSint16LE();
                        _totResourceTable->unknown = totResTable.readByte();

                        _totResourceTable->items = new TotResItem[_totResourceTable->itemsCount];
                        for (i = 0; i < _totResourceTable->itemsCount; ++i) {
                              _totResourceTable->items[i].offset = totResTable.readSint32LE();
                              _totResourceTable->items[i].size = totResTable.readSint16LE();
                              _totResourceTable->items[i].width = totResTable.readSint16LE();
                              _totResourceTable->items[i].height = totResTable.readSint16LE();
                        }
                  }

                  loadImFile();
                  loadExtTable();

                  _vm->_global->_inter_animDataSize = READ_LE_UINT16((char *)_totFileData + 0x38);
                  if (_vm->_global->_inter_variables == 0) {
                        variablesCount = READ_LE_UINT32((char *)_totFileData + 0x2c);
                        _vm->_global->_inter_variables = new char[variablesCount * 4];
                        for (i = 0; i < variablesCount; i++)
                              WRITE_VAR(i, 0);
                  }

                  _vm->_global->_inter_execPtr = (char *)_totFileData;
                  _vm->_global->_inter_execPtr += READ_LE_UINT32((char *)_totFileData + 0x64);

                  _vm->_inter->renewTimeInVars();

                  WRITE_VAR(13, _vm->_global->_useMouse);
                  WRITE_VAR(14, _vm->_global->_soundFlags);
                  WRITE_VAR(15, _vm->_global->_videoMode);
                  WRITE_VAR(16, _vm->_global->_language);

                  _vm->_inter->callSub(2);

                  if (_totToLoad[0] != 0)
                        _vm->_inter->_terminate = false;

                  variablesCount = READ_LE_UINT32((char *)_totFileData + 0x2c);
                  _vm->_draw->blitInvalidated();
                  delete[] _totFileData;
                  _totFileData = 0;

                  if (_totTextData) {
                        delete[] _totTextData->items;
                        delete _totTextData;
                  }
                  _totTextData = 0;

                  if (_totResourceTable) {
                        delete[] _totResourceTable->items;
                        delete _totResourceTable;
                  }
                  _totResourceTable = 0;

                  delete[] _imFileData;
                  _imFileData = 0;

                  if (_extTable)
                        delete[] _extTable->items;
                  delete _extTable;
                  _extTable = 0;

                  if (_extHandle >= 0)
                        _vm->_dataio->closeData(_extHandle);

                  _extHandle = -1;

                  for (i = 0; i < *_vm->_scenery->_pCaptureCounter; i++)
                        capturePop(0);

                  _vm->_mult->checkFreeMult();
                  _vm->_mult->freeAll();

                  for (i = 0; i < 20; i++) {
                        if (_vm->_draw->_spritesArray[i] != 0)
                              _vm->_video->freeSurfDesc(_vm->_draw->_spritesArray[i]);
                        _vm->_draw->_spritesArray[i] = 0;
                  }
                  _vm->_snd->stopSound(0);

                  for (i = 0; i < 20; i++)
                        freeSoundSlot(i);

                  if (_totToLoad[0] == 0)
                        break;

                  strcpy(_curTotFile, _totToLoad);
            }
      }

      strcpy(_curTotFile, savedTotName);

      _vm->_inter->_nestLevel = oldNestLevel;
      _vm->_inter->_breakFromLevel = oldBreakFrom;
      _vm->_scenery->_pCaptureCounter = oldCaptureCounter;
      _vm->_global->_inter_execPtr = savedIP;
}

void Game_v1::clearCollisions() {
      int16 i;
      for (i = 0; i < 250; i++) {
            _collisionAreas[i].id = 0;
            _collisionAreas[i].left = -1;
      }
}

void Game_v1::addNewCollision(int16 id, int16 left, int16 top, int16 right, int16 bottom,
          int16 flags, int16 key, int16 funcEnter, int16 funcLeave) {
      int16 i;
      Collision *ptr;

      debugC(5, DEBUG_COLLISIONS, "addNewCollision");
      debugC(5, DEBUG_COLLISIONS, "id = %x", id);
      debugC(5, DEBUG_COLLISIONS, "left = %d, top = %d, right = %d, bottom = %d", left, top, right, bottom);
      debugC(5, DEBUG_COLLISIONS, "flags = %x, key = %x", flags, key);
      debugC(5, DEBUG_COLLISIONS, "funcEnter = %d, funcLeave = %d", funcEnter, funcLeave);

      for (i = 0; i < 250; i++) {
            if (_collisionAreas[i].left != -1)
                  continue;

            ptr = &_collisionAreas[i];
            ptr->id = id;
            ptr->left = left;
            ptr->top = top;
            ptr->right = right;
            ptr->bottom = bottom;
            ptr->flags = flags;
            ptr->key = key;
            ptr->funcEnter = funcEnter;
            ptr->funcLeave = funcLeave;
            return;
      }
      error("addNewCollision: Collision array full!\n");
}

void Game_v1::pushCollisions(char all) {
      Collision *srcPtr;
      Collision *destPtr;
      int16 size;

      debugC(1, DEBUG_COLLISIONS, "pushCollisions");
      for (size = 0, srcPtr = _collisionAreas; srcPtr->left != -1;
          srcPtr++) {
            if (all || (srcPtr->id & 0x8000))
                  size++;
      }

      destPtr = new Collision[size];
      _collStack[_collStackSize] = destPtr;
      _collStackElemSizes[_collStackSize] = size;
      _collStackSize++;

      for (srcPtr = _collisionAreas; srcPtr->left != -1; srcPtr++) {
            if (all || (srcPtr->id & 0x8000)) {
                  memcpy(destPtr, srcPtr, sizeof(Collision));
                  srcPtr->left = -1;
                  destPtr++;
            }
      }
}

void Game_v1::popCollisions(void) {
      Collision *destPtr;
      Collision *srcPtr;

      debugC(1, DEBUG_COLLISIONS, "popCollision");

      _collStackSize--;
      for (destPtr = _collisionAreas; destPtr->left != -1; destPtr++);

      srcPtr = _collStack[_collStackSize];
      memcpy(destPtr, srcPtr,
          _collStackElemSizes[_collStackSize] *
          sizeof(Collision));

      delete[] _collStack[_collStackSize];
}

int16 Game_v1::checkKeys(int16 *pMouseX, int16 *pMouseY, int16 *pButtons, char handleMouse) {
      _vm->_util->processInput();

      if (VAR(58) != 0) {
            if (_vm->_mult->_frameStart != (int)VAR(58) - 1)
                  _vm->_mult->_frameStart++;
            else
                  _vm->_mult->_frameStart = 0;

            _vm->_mult->playMult(_vm->_mult->_frameStart + VAR(57), _vm->_mult->_frameStart + VAR(57), 1,
                handleMouse);
      }

      if (_vm->_inter->_soundEndTimeKey != 0
          && _vm->_util->getTimeKey() >= _vm->_inter->_soundEndTimeKey) {
            _vm->_snd->stopSound(_vm->_inter->_soundStopVal);
            _vm->_inter->_soundEndTimeKey = 0;
      }

      if (_vm->_global->_useMouse == 0)
            error("checkKeys: Can't work without mouse!");

      _vm->_util->getMouseState(pMouseX, pMouseY, pButtons);

      if (*pButtons == 3)
            *pButtons = 0;

      return _vm->_util->checkKey();
}

int16 Game_v1::checkCollisions(char handleMouse, int16 deltaTime, int16 *pResId,
          int16 *pResIndex) {
      char *savedIP;
      int16 resIndex;
      int16 key;
      int16 oldIndex;
      int16 oldId;
      uint32 timeKey;

      if (deltaTime >= -1) {
            _lastCollKey = 0;
            _lastCollAreaIndex = 0;
            _lastCollId = 0;
      }

      if (pResId != 0)
            *pResId = 0;

      resIndex = 0;

      if (_vm->_draw->_cursorIndex == -1 && handleMouse != 0
          && _lastCollKey == 0) {
            _lastCollKey =
                checkMousePoint(1, &_lastCollId,
                &_lastCollAreaIndex);

            if (_lastCollKey != 0 && (_lastCollId & 0x8000) != 0) {
                  savedIP = _vm->_global->_inter_execPtr;
                  _vm->_global->_inter_execPtr = (char *)_totFileData +
                      _collisionAreas[_lastCollAreaIndex].funcEnter;

                  _vm->_inter->funcBlock(0);
                  _vm->_global->_inter_execPtr = savedIP;
            }
      }

      if (handleMouse != 0)
            _vm->_draw->animateCursor(-1);

      timeKey = _vm->_util->getTimeKey();
      while (1) {
            if (_vm->_inter->_terminate) {
                  if (handleMouse)
                        _vm->_draw->blitCursor();
                  return 0;
            }

            if (_vm->_draw->_noInvalidated == 0) {
                  if (handleMouse)
                        _vm->_draw->animateCursor(-1);
                  else
                        _vm->_draw->blitInvalidated();
            }

            // NOTE: the original asm does the below checkKeys call
            // _before_ this check. However, that can cause keypresses to get lost
            // since there's a return statement in this check.
            // Additionally, I added a 'deltaTime == -1' check there, since
            // when this function is called with deltaTime == -1 in inputArea,
            // and the return value is then discarded.
            if (deltaTime < 0) {
                  uint32 curtime = _vm->_util->getTimeKey();
                  if (deltaTime == -1 || curtime + deltaTime > timeKey) {
                        if (pResId != 0)
                              *pResId = 0;

                        if (pResIndex != 0)
                              *pResIndex = 0;

                        return 0;
                  }
            }

            key = checkKeys(&_vm->_global->_inter_mouseX, &_vm->_global->_inter_mouseY,
                                           &_mouseButtons, handleMouse);

            if (handleMouse == 0 && _mouseButtons != 0) {
                  _vm->_util->waitMouseRelease(0);
                  key = 3;
            }

            if (key != 0) {

                  if (handleMouse == 1)
                        _vm->_draw->blitCursor();

                  if (pResId != 0)
                        *pResId = 0;

                  if (pResIndex != 0)
                        *pResIndex = 0;

                  if (_lastCollKey != 0 &&
                      _collisionAreas[_lastCollAreaIndex].funcLeave != 0) {
                        savedIP = _vm->_global->_inter_execPtr;
                        _vm->_global->_inter_execPtr = (char *)_totFileData +
                            _collisionAreas[_lastCollAreaIndex].funcLeave;

                        _vm->_inter->funcBlock(0);
                        _vm->_global->_inter_execPtr = savedIP;
                  }

                  _lastCollKey = 0;
                  if (key != 0)
                        return key;
            }

            if (handleMouse != 0) {
                  if (_mouseButtons != 0) {
                        oldIndex = 0;

                        _vm->_draw->animateCursor(2);
                        if (deltaTime <= 0) {
                              if (handleMouse == 1)
                                    _vm->_util->waitMouseRelease(1);
                        } else if (deltaTime > 0) {
                              _vm->_util->delay(deltaTime);
                        }

                        _vm->_draw->animateCursor(-1);
                        if (pResId != 0)
                              *pResId = 0;

                        key = checkMousePoint(0, pResId, &resIndex);

                        if (pResIndex != 0)
                              *pResIndex = resIndex;

                        if (key != 0 || (pResId != 0 && *pResId != 0)) {
                              if (handleMouse == 1 && (deltaTime <= 0
                                    || _mouseButtons == 0))
                                    _vm->_draw->blitCursor();

                              if (_lastCollKey != 0 &&
                                    _collisionAreas[_lastCollAreaIndex].funcLeave != 0) {
                                    savedIP = _vm->_global->_inter_execPtr;
                                    _vm->_global->_inter_execPtr =
                                        (char *)_totFileData +
                                        _collisionAreas[_lastCollAreaIndex].funcLeave;

                                    _vm->_inter->funcBlock(0);
                                    _vm->_global->_inter_execPtr = savedIP;
                              }
                              _lastCollKey = 0;
                              return key;
                        }

                        if (_lastCollKey != 0 &&
                            _collisionAreas[_lastCollAreaIndex].funcLeave != 0) {
                              savedIP = _vm->_global->_inter_execPtr;
                              _vm->_global->_inter_execPtr =
                                  (char *)_totFileData +
                                  _collisionAreas[_lastCollAreaIndex].funcLeave;

                              _vm->_inter->funcBlock(0);
                              _vm->_global->_inter_execPtr = savedIP;
                        }

                        _lastCollKey =
                            checkMousePoint(1, &_lastCollId,
                            &_lastCollAreaIndex);

                        if (_lastCollKey != 0
                            && (_lastCollId & 0x8000) != 0) {
                              savedIP = _vm->_global->_inter_execPtr;
                              _vm->_global->_inter_execPtr =
                                  (char *)_totFileData +
                                  _collisionAreas[_lastCollAreaIndex].funcEnter;

                              _vm->_inter->funcBlock(0);
                              _vm->_global->_inter_execPtr = savedIP;
                        }
                  } else {

                        if (handleMouse != 0 &&
                            (_vm->_global->_inter_mouseX != _vm->_draw->_cursorX
                              || _vm->_global->_inter_mouseY != _vm->_draw->_cursorY)) {
                              oldIndex = _lastCollAreaIndex;
                              oldId = _lastCollId;

                              key =
                                  checkMousePoint(1,
                                  &_lastCollId,
                                  &_lastCollAreaIndex);

                              if (key != _lastCollKey) {
                                    if (_lastCollKey != 0
                                        && (oldId & 0x8000) != 0) {
                                          savedIP = _vm->_global->_inter_execPtr;
                                          _vm->_global->_inter_execPtr = (char *)_totFileData +
                                              _collisionAreas[oldIndex].funcLeave;

                                          _vm->_inter->funcBlock(0);
                                          _vm->_global->_inter_execPtr = savedIP;
                                    }

                                    _lastCollKey = key;
                                    if (_lastCollKey != 0 && (_lastCollId & 0x8000) != 0) {
                                          savedIP = _vm->_global->_inter_execPtr;
                                          _vm->_global->_inter_execPtr = (char *)_totFileData +
                                              _collisionAreas[_lastCollAreaIndex].funcEnter;

                                          _vm->_inter->funcBlock(0);
                                          _vm->_global->_inter_execPtr = savedIP;
                                    }
                              }
                        }
                  }
            }

            if (handleMouse != 0)
                  _vm->_draw->animateCursor(-1);

            _vm->_util->delay(10);

            _vm->_snd->loopSounds();
      }
}

void Game_v1::prepareStart(void) {
      int16 i;

      clearCollisions();

      _vm->_global->_pPaletteDesc->unused2 = _vm->_draw->_unusedPalette2;
      _vm->_global->_pPaletteDesc->unused1 = _vm->_draw->_unusedPalette1;
      _vm->_global->_pPaletteDesc->vgaPal = _vm->_draw->_vgaPalette;

      _vm->_video->setFullPalette(_vm->_global->_pPaletteDesc);

      _vm->_draw->_backSurface = _vm->_video->initSurfDesc(_vm->_global->_videoMode, 320, 200, 0);

      _vm->_video->fillRect(_vm->_draw->_backSurface, 0, 0, 319, 199, 1);
      _vm->_draw->_frontSurface = _vm->_global->_pPrimarySurfDesc;
      _vm->_video->fillRect(_vm->_draw->_frontSurface, 0, 0, 319, 199, 1);

      _vm->_util->setMousePos(152, 92);

      _vm->_draw->_cursorX = 152;
      _vm->_global->_inter_mouseX = 152;

      _vm->_draw->_cursorY = 92;
      _vm->_global->_inter_mouseY = 92;
      _vm->_draw->_invalidatedCount = 0;
      _vm->_draw->_noInvalidated = 1;
      _vm->_draw->_applyPal = 0;
      _vm->_draw->_paletteCleared = 0;
      _vm->_draw->_cursorWidth = 16;
      _vm->_draw->_cursorHeight = 16;
      _vm->_draw->_transparentCursor = 1;

      for (i = 0; i < 40; i++) {
            _vm->_draw->_cursorAnimLow[i] = -1;
            _vm->_draw->_cursorAnimDelays[i] = 0;
            _vm->_draw->_cursorAnimHigh[i] = 0;
      }

      _vm->_draw->_cursorAnimLow[1] = 0;
      _vm->_draw->_cursorSprites = _vm->_video->initSurfDesc(_vm->_global->_videoMode, 32, 16, 2);
      _vm->_draw->_cursorBack = _vm->_video->initSurfDesc(_vm->_global->_videoMode, 16, 16, 0);
      _vm->_draw->_renderFlags = 0;
      _vm->_draw->_backDeltaX = 0;
      _vm->_draw->_backDeltaY = 0;

      _startTimeKey = _vm->_util->getTimeKey();
}

} // End of namespace Gob

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