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



#include "agos/agos.h"
#include "agos/intern.h"

namespace AGOS {

int AGOSEngine::canPlace(Item *x, Item *y) {
      Item *z = derefItem(x->parent);

      if (getGameType() == GType_ELVIRA1) {
            SubPlayer *p = (SubPlayer *)findChildOfType(y, kPlayerType);
            SubContainer *c = (SubContainer *)findChildOfType(y, kContainerType);
            int cap = 0;
            int wt;

            if ((c == NULL) && (p == NULL))
                  return 0;         /* Fits Fine */

            xPlace(x, NULL);        /* Avoid disturbing figures */
            if (c)
                  cap = sizeContents(y);

            wt = weightOf(y);
            xPlace(x, z);
            if (c) {
                  cap = c->volume - cap;
                  cap -= sizeOfRec(x, 0); /* - size of item going in */
                  if (cap < 0)
                        return -1;  /* Too big to fit */
            }
            if (p) {
                  if (wt + weightOf(x) > p->strength * 10)
                        return -2;  /* Too heavy */
            }
      } else {
            SubObject *o = (SubObject *)findChildOfType(y, kObjectType);
            int ct;
            int cap = 0;

            if (o == NULL)
                  return 0;   /* Fits Fine */

            xPlace(x,NULL);         /* Avoid disturbing figures */
            if (o)
                  cap = sizeContents(y);

            xPlace(x, z);
            if ((o) && (o->objectFlags & kOFVolume)) {
                  ct = getOffsetOfChild2Param(o, kOFVolume);
                  cap = o->objectFlagValue[ct] - cap;
                  cap -= sizeOfRec(x, 0); /* - size of item going in */
                  if (cap < 0)
                        return -1;  /* Too big to fit */
            }
      }
      return 0;
}

void AGOSEngine::xPlace(Item *x, Item *y) {
      if (derefItem(x->parent))
            unlinkItem(x);

      linkItem(x, y);
}

int AGOSEngine::contains(Item *a, Item *b) {
      while (derefItem(b->parent)) {
            if (derefItem(b->parent) == a)
                  return 1;
            b = derefItem(b->parent);
      }

      return 0;
}

int AGOSEngine::sizeContents(Item *x) {
      return sizeRec(x, 0);
}

int AGOSEngine::sizeRec(Item *x, int d) {
      Item *o;
      int n = 0;

      o = derefItem(x->child);

      if (d > 32)
            return(0);
      while (o) {
            n += sizeOfRec(o,d);
            o = derefItem(o->child);
      }

      return n;
}

int AGOSEngine::sizeOfRec(Item *i, int d) {
      SubObject *o = (SubObject *)findChildOfType(i, kObjectType);

      if (getGameType() == GType_ELVIRA1) {
            SubPlayer *p = (SubPlayer *)findChildOfType(i, kPlayerType);
            SubContainer *c = (SubContainer *)findChildOfType(i, kContainerType);

            if ((c) && (c->flags & 1)) {
                  if (o)
                        return (o->objectSize + sizeRec(i, d + 1));
                  if (p)
                        return (p->size + sizeRec(i, d + 1));
                  return (sizeRec(i, d + 1));
            }
            if (o)
                  return (o->objectWeight);
            if (p)
                  return (p->weight);
      } else {
            int ct;
            if ((o) && (o->objectFlags & kOFSoft)) {
                  if (o->objectFlags & kOFSize) {
                        ct = getOffsetOfChild2Param(o, kOFSize);
                        return o->objectFlagValue[ct] + sizeRec(i, d + 1);
                  }
                  return sizeRec(i, d + 1);
            }
            if ((o) && (o->objectFlags & kOFSize)) {
                  ct = getOffsetOfChild2Param(o, kOFSize);
                  return o->objectFlagValue[ct];
            }
      }
      return 0;
}

int AGOSEngine::weighUp(Item *x) {
      return weightRec(x, 0);
}

int AGOSEngine::weightRec(Item *x, int d) {
      int n = weightOf(x);
      Item *o;

      if (d > 32)
            return 0;
      o = derefItem(x->child);
      while (o) {
            n += weightRec(o, d + 1);
            o = derefItem(o->next);
      }

      return n;
}

int AGOSEngine::weightOf(Item *x) {
      SubObject *o = (SubObject *)findChildOfType(x, kObjectType);

      if (getGameType() == GType_ELVIRA1) {
            SubPlayer *p = (SubPlayer *)findChildOfType(x, kPlayerType);
            if (o)
                  return o->objectWeight;
            if (p)
                  return p->weight;
      } else {
            if ((o) && (o->objectFlags & kOFWeight)) {
                  int ct = getOffsetOfChild2Param(o, kOFWeight);
                  return (o->objectFlagValue[ct]);
            }
      }
      return 0;
}

} // End of namespace AGOS

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