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prc.cpp

/* 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.
 *
 * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-11-1/engines/cine/prc.cpp $
 * $Id: prc.cpp 30944 2008-02-23 22:50:18Z sev $
 *
 */


#include "common/endian.h"

#include "cine/cine.h"
#include "cine/various.h"

#include "common/config-manager.h"

namespace Cine {

prcLinkedListStruct globalScriptsHead;
prcLinkedListStruct objScriptList;

//char currentPrcName[20];

void resetglobalScriptsHead(void) {
      globalScriptsHead.next = NULL;
      globalScriptsHead.scriptIdx = -1;
}

void freePrcLinkedList(void) {
      prcLinkedListStruct *currentHead = globalScriptsHead.next;

      while (currentHead) {
            prcLinkedListStruct *temp;

            assert(currentHead);

            temp = currentHead->next;

            delete currentHead;

            currentHead = temp;
      }

      resetglobalScriptsHead();
}

void loadPrc(const char *pPrcName) {
      byte i;
      uint16 numScripts;
      byte *scriptPtr, *dataPtr;

      assert(pPrcName);

      for (i = 0; i < NUM_MAX_SCRIPT; i++) {
            if (scriptTable[i].ptr) {
                  assert(scriptTable[i].ptr);
                  free(scriptTable[i].ptr);
                  scriptTable[i].ptr = NULL;
                  scriptTable[i].size = 0;
            }
      }

      // This is copy protection. Used to hang the machine
      if (!scumm_stricmp(pPrcName, "L201.ANI")) {
            exitEngine = 1;
            return;
      }

      checkDataDisk(-1);
      if ((g_cine->getGameType() == Cine::GType_FW) &&
            (!scumm_stricmp(pPrcName, BOOT_PRC_NAME) || !scumm_stricmp(pPrcName, "demo.prc"))) {
            scriptPtr = dataPtr = readFile(pPrcName);
      } else {
            scriptPtr = dataPtr = readBundleFile(findFileInBundle(pPrcName));
      }

      assert(scriptPtr);

      setMouseCursor(MOUSE_CURSOR_DISK);

      numScripts = READ_BE_UINT16(scriptPtr);
      scriptPtr += 2;
      assert(numScripts <= NUM_MAX_SCRIPT);

      for (i = 0; i < numScripts; i++) {
            scriptTable[i].size = READ_BE_UINT16(scriptPtr); scriptPtr += 2;
      }

      for (i = 0; i < numScripts; i++) {
            uint16 size = scriptTable[i].size;
            if (size) {
                  scriptTable[i].ptr = (byte *) malloc(size);
                  assert(scriptTable[i].ptr);
                  memcpy(scriptTable[i].ptr, scriptPtr, size);
                  scriptPtr += size;
                  computeScriptStack(scriptTable[i].ptr, scriptTable[i].stack, size);
            }
      }

      free(dataPtr);

#ifdef DUMP_SCRIPTS

      {
            uint16 s;
            char buffer[256];

            for (s = 0; s < numScripts; s++) {
                  if (scriptTable[s].size) {
                        sprintf(buffer, "%s_%03d.txt", pPrcName, s);

                        decompileScript(scriptTable[s].ptr, scriptTable[s].stack, scriptTable[s].size, s);
                        dumpScript(buffer);
                  }
            }
      }
#endif
}

} // End of namespace Cine

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