mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-14 21:59:17 +00:00
471 lines
9.1 KiB
C++
471 lines
9.1 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "common/file.h"
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#include "agos/agos.h"
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#include "agos/intern.h"
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namespace AGOS {
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uint16 AGOSEngine::getBackExit(int n) {
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switch (n) {
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case 0:
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return 2;
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case 1:
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return 3;
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case 2:
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return 0;
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case 3:
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return 1;
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case 4:
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return 5;
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case 5:
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return 4;
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}
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return 0;
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}
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uint16 AGOSEngine::getDoorState(Item *item, uint16 d) {
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uint16 mask = 3;
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uint16 n;
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SubRoom *subRoom = (SubRoom *)findChildOfType(item, kRoomType);
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if (subRoom == NULL)
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return 0;
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d <<= 1;
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mask <<= d;
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n = subRoom->roomExitStates & mask;
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n >>= d;
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return n;
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}
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uint16 AGOSEngine::getExitOf(Item *item, uint16 d) {
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SubRoom *subRoom;
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uint16 x;
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uint16 y = 0;
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subRoom = (SubRoom *)findChildOfType(item, kRoomType);
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if (subRoom == NULL)
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return 0;
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x = d;
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while (x > y) {
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if (getDoorState(item, y) == 0)
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d--;
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y++;
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}
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return subRoom->roomExit[d];
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}
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void AGOSEngine::changeDoorState(SubRoom *r, uint16 d, uint16 n) {
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uint16 mask=3;
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d <<= 1;
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mask <<= d;
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n <<= d;
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r->roomExitStates &= ~mask;
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r->roomExitStates |= n;
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}
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void AGOSEngine::setDoorState(Item *i, uint16 d, uint16 n) {
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Item *j;
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SubRoom *r, *r1;
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uint16 d1;
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uint16 y = 0;
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r = (SubRoom *)findChildOfType(i, kRoomType);
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if (r == NULL)
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return;
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d1 = d;
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while (d > y) {
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if (getDoorState(i, y) == 0)
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d1--;
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y++;
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}
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changeDoorState(r, d, n);
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j = derefItem(r->roomExit[d1]);
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if (j == NULL)
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return;
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r1 = (SubRoom *)findChildOfType(j, kRoomType);
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if (r1 == NULL)
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return;
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d = getBackExit(d);
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d1 = d;
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y = 0;
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while (d > y) {
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if (getDoorState(j, y) == 0)
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d1--;
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y++;
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}
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/* Check are a complete exit pair */
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if (derefItem(r1->roomExit[d1]) != i)
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return;
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/* Change state of exit coming back */
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changeDoorState(r1, d, n);
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}
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// Elvira 1 specific
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Item *AGOSEngine::getDoorOf(Item *i, uint16 d) {
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SubGenExit *g;
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Item *x;
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g = (SubGenExit *)findChildOfType(i, kGenExitType);
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if (g == NULL)
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return 0;
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x = derefItem(g->dest[d]);
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if (x == NULL)
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return 0;
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if (isRoom(x))
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return 0;
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return x;
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}
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Item *AGOSEngine::getExitOf_e1(Item *item, uint16 d) {
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SubGenExit *g;
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Item *x;
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g = (SubGenExit *)findChildOfType(item, kGenExitType);
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if (g == NULL)
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return 0;
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x = derefItem(g->dest[d]);
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if (x == NULL)
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return 0;
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if (isRoom(x))
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return x;
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if (x->state != 0)
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return 0;
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return derefItem(x->parent);
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}
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void AGOSEngine_Waxworks::moveDirn(Item *i, uint x) {
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Item *d;
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uint16 n;
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if (i->parent == 0)
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return;
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n = getExitOf(derefItem(i->parent), x);
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if (derefItem(n) == NULL) {
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loadRoomItems(n);
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n = getExitOf(derefItem(i->parent), x);
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}
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d = derefItem(n);
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if (d) {
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n = getDoorState(derefItem(i->parent), x);
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if (n == 1) {
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if (!canPlace(i, d))
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setItemParent(i, d);
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}
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}
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}
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void AGOSEngine_Elvira2::moveDirn(Item *i, uint x) {
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SubSuperRoom *sr;
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Item *d, *p;
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uint16 a, n;
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if (i->parent == 0)
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return;
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p = derefItem(i->parent);
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if (findChildOfType(p, kSuperRoomType)) {
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n = getExitState(p, _superRoomNumber,x);
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if (n == 1) {
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sr = (SubSuperRoom *)findChildOfType(p, kSuperRoomType);
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switch (x) {
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case 0: a = -(sr->roomX); break;
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case 1: a = 1; break;
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case 2: a = sr->roomX; break;
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case 3: a = 0xFFFF; break;
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case 4: a = -(sr->roomX * sr->roomY); break;
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case 5: a = (sr->roomX * sr->roomY); break;
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default: return;
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}
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_superRoomNumber += a;
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}
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return;
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}
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n = getExitOf(derefItem(i->parent), x);
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d = derefItem(n);
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if (d) {
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n = getDoorState(derefItem(i->parent), x);
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if (n == 1) {
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if (!canPlace(i, d))
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setItemParent(i, d);
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}
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}
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}
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void AGOSEngine::moveDirn(Item *i, uint x) {
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Item *d, *p;
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p = derefItem(i->parent);
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if (p == 0)
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return;
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d = getExitOf_e1(p, x);
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if (d) {
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if (canPlace(i, d))
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return;
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setItemParent(i, d);
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return;
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}
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d = getDoorOf(p, x);
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if (d) {
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const byte *name = getStringPtrByID(d->itemName, true);
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if (d->state == 1)
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showMessageFormat("%s is closed.\n", name);
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else
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showMessageFormat("%s is locked.\n", name);
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return;
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}
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showMessageFormat("You can't go that way.\n");
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}
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// Elvira 2 specific
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int AGOSEngine_Elvira2::changeExitStates(SubSuperRoom *sr, int n, int d, uint16 s) {
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int b, bd;
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uint16 mask;
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switch (d) {
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case 0:
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b = -(sr->roomX);
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bd = 2;
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if (((n % (sr->roomX * sr->roomY)) / sr->roomX) == 0)
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return 0;
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else
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break;
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case 1:
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b = 1;
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bd = 3;
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if (((n % (sr->roomX * sr->roomY)) % sr->roomX) == 0)
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return 0;
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else
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break;
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case 2:
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b = sr->roomX;
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bd = 0;
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if (((n % (sr->roomX * sr->roomY)) / sr->roomX) == (sr->roomY - 1))
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return 0;
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else
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break;
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case 3:
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b = -1;
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bd = 1;
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if (((n % (sr->roomX * sr->roomY)) % sr->roomX) == 1)
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return 0;
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else
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break;
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case 4:
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b = -(sr->roomX * sr->roomY);
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bd = 5;
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if (n < (sr->roomX * sr->roomY))
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return 0;
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else
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break;
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case 5:
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b = sr->roomX * sr->roomY;
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bd = 4;
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if (n > (sr->roomX * sr->roomY * (sr->roomZ - 1)))
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return 0;
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else
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break;
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default:
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return 0;
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}
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n--;
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d <<= 1;
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mask = (3 << d);
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sr->roomExitStates[n] &= ~mask;
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sr->roomExitStates[n] |= (s << d);
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bd <<= 1;
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mask = (3 << bd);
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sr->roomExitStates[n + b] &= ~mask;
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sr->roomExitStates[n + b] |= (s << bd);
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return 1;
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}
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uint16 AGOSEngine_Elvira2::getExitState(Item *i, uint16 x, uint16 d) {
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SubSuperRoom *sr;
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uint16 mask = 3;
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uint16 n;
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sr = (SubSuperRoom *)findChildOfType(i, kSuperRoomType);
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if (sr == NULL)
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return 0;
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d <<= 1;
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mask <<= d;
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n = sr->roomExitStates[x - 1] & mask;
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n >>= d;
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return n;
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}
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void AGOSEngine_Elvira2::setExitState(Item *i, uint16 n, uint16 d, uint16 s) {
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SubSuperRoom *sr = (SubSuperRoom *)findChildOfType(i, kSuperRoomType);
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if (sr)
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changeExitStates(sr, n, d, s);
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}
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void AGOSEngine_Elvira2::setSRExit(Item *i, int n, int d, uint16 s) {
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uint16 mask = 3;
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SubSuperRoom *sr = (SubSuperRoom *)findChildOfType(i, kSuperRoomType);
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if (sr) {
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n--;
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d <<= 1;
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mask <<= d;
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s <<= d;
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sr->roomExitStates[n] &= ~mask;
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sr->roomExitStates[n] |= s;
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}
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}
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// Waxworks specific
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bool AGOSEngine::loadRoomItems(uint16 room) {
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byte *p;
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uint i, minNum, maxNum;
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char filename[30];
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Common::File in;
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Item *item, *itemTmp;
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if (_roomsList == NULL)
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return 0;
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_currentRoom = room;
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room -= 2;
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if (_roomsListPtr) {
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p = _roomsListPtr;
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for (;;) {
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minNum = READ_BE_UINT16(p); p += 2;
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if (minNum == 0)
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break;
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maxNum = READ_BE_UINT16(p); p += 2;
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for (uint16 z = minNum; z <= maxNum; z++) {
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uint16 itemNum = z + 2;
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item = derefItem(itemNum);
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item->parent = 0;
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uint16 num = (itemNum - _itemArrayInited);
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_roomStates[num].state = item->state;
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_roomStates[num].classFlags = item->classFlags;
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SubRoom *subRoom = (SubRoom *)findChildOfType(item, kRoomType);
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_roomStates[num].roomExitStates = subRoom->roomExitStates;
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}
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}
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}
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p = _roomsList;
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while (*p) {
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for (i = 0; *p; p++, i++)
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filename[i] = *p;
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filename[i] = 0;
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p++;
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for (;;) {
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_roomsListPtr = p;
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minNum = READ_BE_UINT16(p); p += 2;
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if (minNum == 0)
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break;
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maxNum = READ_BE_UINT16(p); p += 2;
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if (room >= minNum && room <= maxNum) {
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in.open(filename);
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if (in.isOpen() == false) {
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error("loadRoomItems: Can't load rooms file '%s'", filename);
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}
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while ((i = in.readUint16BE()) != 0) {
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uint16 itemNum = i + 2;
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_itemArrayPtr[itemNum] = (Item *)allocateItem(sizeof(Item));
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readItemFromGamePc(&in, _itemArrayPtr[itemNum]);
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item = derefItem(itemNum);
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item->parent = 0;
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item->child = 0;
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for (uint16 z = _itemArrayInited; z; z--) {
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itemTmp = derefItem(z);
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if (!itemTmp)
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continue;
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if (itemTmp->parent != itemNum)
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continue;
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if (item->child == 0) {
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item->child = z;
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continue;
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}
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uint16 child = item->child;
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while (itemTmp->next != 0) {
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if (itemTmp->next == child) {
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item->child = z;
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break;
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}
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itemTmp = derefItem(itemTmp->next);
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}
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}
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uint16 num = (itemNum - _itemArrayInited);
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item->state = _roomStates[num].state;
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item->classFlags = _roomStates[num].classFlags;
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SubRoom *subRoom = (SubRoom *)findChildOfType(item, kRoomType);
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subRoom->roomExitStates = _roomStates[num].roomExitStates;
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}
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in.close();
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return 1;
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}
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}
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}
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debug(1,"loadRoomItems: didn't find %d", room);
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return 0;
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}
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} // End of namespace AGOS
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