Logo Search packages:      
Sourcecode: scummvm version File versions  Download package

object.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/object.cpp $
 * $Id: object.cpp 30944 2008-02-23 22:50:18Z sev $
 *
 */


#include "common/endian.h"
#include "common/scummsys.h"
#include "common/util.h"

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

namespace Cine {

objectStruct objectTable[NUM_MAX_OBJECT];
uint16 globalVars[NUM_MAX_VAR];
overlayHeadElement overlayHead;

void unloadAllMasks(void) {
      overlayHeadElement *current = overlayHead.next;

      while (current) {
            overlayHeadElement *next = current->next;

            delete current;

            current = next;
      }

      resetMessageHead();
}

void resetMessageHead(void) {
      overlayHead.next = NULL;
      overlayHead.previous = NULL;
}

void loadObject(char *pObjectName) {
      uint16 numEntry;
      uint16 entrySize;
      uint16 i;
      byte *ptr, *dataPtr;

      checkDataDisk(-1);

      ptr = dataPtr = readBundleFile(findFileInBundle(pObjectName));

      setMouseCursor(MOUSE_CURSOR_DISK);

      numEntry = READ_BE_UINT16(ptr); ptr += 2;

      entrySize = READ_BE_UINT16(ptr); ptr += 2;

      assert(numEntry <= NUM_MAX_OBJECT);

      for (i = 0; i < numEntry; i++) {
            if (objectTable[i].costume != -2) { // flag is keep ?
                  Common::MemoryReadStream readS(ptr, entrySize);

                  objectTable[i].x = readS.readSint16BE();
                  objectTable[i].y = readS.readSint16BE();
                  objectTable[i].mask = readS.readUint16BE();
                  objectTable[i].frame = readS.readSint16BE();
                  objectTable[i].costume = readS.readSint16BE();
                  readS.read(objectTable[i].name, 20);
                  objectTable[i].part = readS.readUint16BE();
            }
            ptr += entrySize;
      }

      if (!strcmp(pObjectName, "INTRO.OBJ")) {
            for (i = 0; i < 10; i++) {
                  objectTable[i].costume = 0;
            }
      }

      free(dataPtr);
}

int8 removeOverlayElement(uint16 objIdx, uint16 param) {
      overlayHeadElement *currentHeadPtr = &overlayHead;
      overlayHeadElement *tempHead = currentHeadPtr;
      overlayHeadElement *tempPtr2;

      currentHeadPtr = tempHead->next;

      while (currentHeadPtr && (currentHeadPtr->objIdx != objIdx || currentHeadPtr->type != param)) {
            tempHead = currentHeadPtr;
            currentHeadPtr = tempHead->next;
      }

      if (!currentHeadPtr || currentHeadPtr->objIdx != objIdx || currentHeadPtr->type != param) {
            return -1;
      }

      tempHead->next = tempPtr2 = currentHeadPtr->next;

      if (!tempPtr2) {
            tempPtr2 = &overlayHead;
      }

      tempPtr2->previous = currentHeadPtr->previous;

      delete currentHeadPtr;

      return 0;
}

int16 freeOverlay(uint16 objIdx, uint16 param) {
      overlayHeadElement *currentHeadPtr = overlayHead.next;
      overlayHeadElement *previousPtr = &overlayHead;
      overlayHeadElement *tempPtr2;

      while (currentHeadPtr && ((currentHeadPtr->objIdx != objIdx) || (currentHeadPtr->type != param))) {
            previousPtr = currentHeadPtr;
            currentHeadPtr = previousPtr->next;
      }

      if (!currentHeadPtr || !((currentHeadPtr->objIdx == objIdx) && (currentHeadPtr->type == param))) {
            return -1;
      }

      previousPtr->next = tempPtr2 = currentHeadPtr->next;

      if (!tempPtr2) {
            tempPtr2 = &overlayHead;
      }

      tempPtr2->previous = currentHeadPtr->previous;

      delete currentHeadPtr;
      return 0;
}

void loadOverlayElement(uint16 objIdx, uint16 param) {
      overlayHeadElement *currentHeadPtr = &overlayHead;
      overlayHeadElement *pNewElement;

      uint16 si = objectTable[objIdx].mask;

      overlayHeadElement *tempHead = currentHeadPtr;

      currentHeadPtr = tempHead->next;

      while (currentHeadPtr && (objectTable[currentHeadPtr->objIdx].mask < si)) {
            tempHead = currentHeadPtr;
            currentHeadPtr = tempHead->next;
      }

      pNewElement = new overlayHeadElement;

      assert(pNewElement);

      pNewElement->next = tempHead->next;
      tempHead->next = pNewElement;

      pNewElement->objIdx = objIdx;
      pNewElement->type = param;

      if (!currentHeadPtr) {
            currentHeadPtr = &overlayHead;
      }

      pNewElement->previous = currentHeadPtr->previous;
      currentHeadPtr->previous = pNewElement;
}

void setupObject(byte objIdx, uint16 param1, uint16 param2, uint16 param3, uint16 param4) {
      objectTable[objIdx].x = param1;
      objectTable[objIdx].y = param2;
      objectTable[objIdx].mask = param3;
      objectTable[objIdx].frame = param4;

      if (!removeOverlayElement(objIdx, 0)) {
            loadOverlayElement(objIdx, 0);
      }
}

void subObjectParam(byte objIdx, byte paramIdx, int16 newValue) {
      addObjectParam(objIdx, paramIdx, -newValue);
}

void addObjectParam(byte objIdx, byte paramIdx, int16 newValue) {
      int16 currentValue = getObjectParam(objIdx, paramIdx);
      modifyObjectParam(objIdx, paramIdx, currentValue + newValue);
}

void modifyObjectParam(byte objIdx, byte paramIdx, int16 newValue) {
      paramIdx--;

      assert(paramIdx <= 5);

      switch (paramIdx) {
      case 0:
            objectTable[objIdx].x = newValue;
            break;
      case 1:
            objectTable[objIdx].y = newValue;
            break;
      case 2:
            objectTable[objIdx].mask = newValue;

            if (!removeOverlayElement(objIdx, 0)) {
                  loadOverlayElement(objIdx, 0);
            }
            break;
      case 3:
            objectTable[objIdx].frame = newValue;
            break;
      case 4:
            if (newValue == -1) {
                  objectTable[objIdx].costume = globalVars[0];
            } else {
                  objectTable[objIdx].costume = newValue;
            }
            break;
      case 5:
            objectTable[objIdx].part = newValue;
            break;
      }
}

byte compareObjectParam(byte objIdx, byte type, int16 value) {
      byte compareResult = 0;
      int16 objectParam = getObjectParam(objIdx, type);

      if (objectParam > value) {
            compareResult |= kCmpGT;
      } else if (objectParam < value) {
            compareResult |= kCmpLT;
      } else {
            compareResult |= kCmpEQ;
      }

      return compareResult;
}

int16 getObjectParam(uint16 objIdx, uint16 paramIdx) {
      assert(objIdx <= NUM_MAX_OBJECT);

      paramIdx--;

      assert(paramIdx <= 5);

      switch (paramIdx) {
      case 0:
            return objectTable[objIdx].x;
      case 1:
            return objectTable[objIdx].y;
      case 2:
            return objectTable[objIdx].mask;
      case 3:
            return objectTable[objIdx].frame;
      case 4:
            return objectTable[objIdx].costume;
      case 5:
            return objectTable[objIdx].part;
      }

      return 0;
}

} // End of namespace Cine

Generated by  Doxygen 1.6.0   Back to index