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scummvm/scumm/object.cpp

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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2004 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "stdafx.h"
#include "scumm/scumm.h"
#include "scumm/actor.h"
#include "scumm/bomp.h"
#include "scumm/object.h"
#include "scumm/resource.h"
#include "scumm/usage_bits.h"
namespace Scumm {
#if !defined(__GNUC__)
#pragma START_PACK_STRUCTS
#endif
struct BompHeader { /* Bomp header */
union {
struct {
uint16 unk;
uint16 width, height;
} GCC_PACK old;
struct {
uint32 width, height;
} GCC_PACK v8;
} GCC_PACK;
} GCC_PACK;
#if !defined(__GNUC__)
#pragma END_PACK_STRUCTS
#endif
bool ScummEngine::getClass(int obj, int cls) const {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in getClass");
cls &= 0x7F;
checkRange(32, 1, cls, "Class %d out of range in getClass");
if (_features & GF_SMALL_HEADER) {
// Translate the new (V5) object classes to the old classes
// (for those which differ).
switch (cls) {
case kObjectClassUntouchable:
cls = 24;
break;
case kObjectClassPlayer:
cls = 23;
break;
case kObjectClassXFlip:
cls = 19;
break;
case kObjectClassYFlip:
cls = 18;
break;
}
}
return (_classData[obj] & (1 << (cls - 1))) != 0;
}
void ScummEngine::putClass(int obj, int cls, bool set) {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in putClass");
cls &= 0x7F;
checkRange(32, 1, cls, "Class %d out of range in putClass");
if (_features & GF_SMALL_HEADER) {
// Translate the new (V5) object classes to the old classes
// (for those which differ).
switch (cls) {
case kObjectClassUntouchable:
cls = 24;
break;
case kObjectClassPlayer:
cls = 23;
break;
case kObjectClassXFlip:
cls = 19;
break;
case kObjectClassYFlip:
cls = 18;
break;
}
}
if (set)
_classData[obj] |= (1 << (cls - 1));
else
_classData[obj] &= ~(1 << (cls - 1));
if (1 <= obj && obj < _numActors) {
_actors[obj].classChanged(cls, set);
}
}
int ScummEngine::getOwner(int obj) const {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in getOwner");
return _objectOwnerTable[obj];
}
void ScummEngine::putOwner(int obj, int owner) {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in putOwner");
checkRange(0xFF, 0, owner, "Owner %d out of range in putOwner");
_objectOwnerTable[obj] = owner;
}
int ScummEngine::getState(int obj) {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in getState");
if (!_copyProtection) {
// I knew LucasArts sold cracked copies of the original Maniac Mansion,
// at least as part of Day of the Tentacle. Apparently they also sold
// cracked versions of the enhanced version. At least in Germany.
//
// This will keep the security door open at all times. I can only
// assume that 182 and 193 each correspond to one particular side of
// the it. Fortunately it does not prevent frustrated players from
// blowing up the mansion, should they feel the urge to.
if (_gameId == GID_MANIAC && (obj == 182 || obj == 193))
_objectStateTable[obj] |= 0x08;
}
return _objectStateTable[obj];
}
void ScummEngine::putState(int obj, int state) {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in putState");
checkRange(0xFF, 0, state, "State %d out of range in putState");
_objectStateTable[obj] = state;
}
int ScummEngine::getObjectRoom(int obj) const {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in getObjectRoom");
return _objectRoomTable[obj];
}
int ScummEngine::getObjectIndex(int object) const {
int i;
if (object < 1)
return -1;
for (i = (_numLocalObjects-1); i > 0; i--) {
if (_objs[i].obj_nr == object)
return i;
}
return -1;
}
int ScummEngine::getObjectImageCount(int object) {
const byte *ptr;
const ImageHeader *imhd;
int count, objnum;
objnum = getObjectIndex(object);
if (objnum == -1)
error("getObjectImageCount: object %d not in memory", object);
ptr = getOBIMFromObject(_objs[objnum]);
imhd = (const ImageHeader *)findResourceData(MKID('IMHD'), ptr);
count = READ_LE_UINT32(&imhd->v8.image_count);
warning("getObjectImageCount: image count %d", count);
return count;
}
int ScummEngine::whereIsObject(int object) const {
int i;
if (object >= _numGlobalObjects)
return WIO_NOT_FOUND;
if (object < 1)
return WIO_NOT_FOUND;
if (_objectOwnerTable[object] != OF_OWNER_ROOM) {
for (i = 0; i < _numInventory; i++)
if (_inventory[i] == object)
return WIO_INVENTORY;
return WIO_NOT_FOUND;
}
for (i = (_numLocalObjects-1); i > 0; i--)
if (_objs[i].obj_nr == object) {
if (_objs[i].fl_object_index)
return WIO_FLOBJECT;
return WIO_ROOM;
}
return WIO_NOT_FOUND;
}
int ScummEngine::getObjectOrActorXY(int object, int &x, int &y) {
if (object < _numActors) {
Actor *act = derefActorSafe(object, "getObjectOrActorXY");
if (act)
return act->getActorXYPos(x, y);
else
return -1;
}
switch (whereIsObject(object)) {
case WIO_NOT_FOUND:
return -1;
case WIO_INVENTORY:
if (_objectOwnerTable[object] < _numActors)
return derefActor(_objectOwnerTable[object], "getObjectOrActorXY(2)")->getActorXYPos(x, y);
else
return -1;
}
getObjectXYPos(object, x, y);
return 0;
}
/**
* Return the position of an object.
* Returns X, Y and direction in angles
*/
void ScummEngine::getObjectXYPos(int object, int &x, int &y, int &dir) {
int idx = getObjectIndex(object);
assert(idx >= 0);
ObjectData &od = _objs[idx];
int state;
const byte *ptr;
const ImageHeader *imhd;
if (_version >= 6) {
state = getState(object) - 1;
if (state < 0)
state = 0;
ptr = getOBIMFromObject(od);
if (!ptr) {
// FIXME: We used to assert here, but it seems that in the nexus
// in The Dig, this can happen, at least with old savegames, and
// it's safe to continue...
warning("getObjectXYPos: Can't find object %d", object);
return;
}
imhd = (const ImageHeader *)findResourceData(MKID('IMHD'), ptr);
assert(imhd);
if (_version == 8) {
switch (FROM_LE_32(imhd->v8.version)) {
case 800:
x = od.x_pos + (int32)READ_LE_UINT32((const byte *)imhd + 8 * state + 0x44);
y = od.y_pos + (int32)READ_LE_UINT32((const byte *)imhd + 8 * state + 0x48);
break;
case 801:
x = od.x_pos + (int32)READ_LE_UINT32(&imhd->v8.hotspot[state].x);
y = od.y_pos + (int32)READ_LE_UINT32(&imhd->v8.hotspot[state].y);
break;
default:
error("Unsupported image header version %d\n", FROM_LE_32(imhd->v8.version));
}
} else if (_version == 7) {
x = od.x_pos + (int16)READ_LE_UINT16(&imhd->v7.hotspot[state].x);
y = od.y_pos + (int16)READ_LE_UINT16(&imhd->v7.hotspot[state].y);
} else {
x = od.x_pos + (int16)READ_LE_UINT16(&imhd->old.hotspot[state].x);
y = od.y_pos + (int16)READ_LE_UINT16(&imhd->old.hotspot[state].y);
}
} else {
x = od.walk_x;
y = od.walk_y;
}
if (_version == 8)
dir = fromSimpleDir(1, od.actordir);
else
dir = oldDirToNewDir(od.actordir & 3);
}
static int getDist(int x, int y, int x2, int y2) {
int a = ABS(y - y2);
int b = ABS(x - x2);
return MAX(a, b);
}
int ScummEngine::getObjActToObjActDist(int a, int b) {
int x, y, x2, y2;
Actor *acta = NULL;
Actor *actb = NULL;
if (a < _numActors)
acta = derefActorSafe(a, "getObjActToObjActDist");
if (b < _numActors)
actb = derefActorSafe(b, "getObjActToObjActDist(2)");
if (acta && actb && acta->getRoom() == actb->getRoom() && acta->getRoom() && !acta->isInCurrentRoom())
return 0;
if (getObjectOrActorXY(a, x, y) == -1)
return 0xFF;
if (getObjectOrActorXY(b, x2, y2) == -1)
return 0xFF;
// Perform adjustXYToBeInBox() *only* if the first item is an
// actor and the second is an object. This used to not check
// whether the second item is a non-actor, which caused bug
// #853874).
if (acta && !actb) {
AdjustBoxResult r = acta->adjustXYToBeInBox(x2, y2);
x2 = r.x;
y2 = r.y;
}
// Now compute the distance between the two points
if (_version <= 2) {
// For V1/V2 games, distances are measured in the original "character"
// based coordinate system, instead of pixels. Otherwise various scripts
// will break. See bugs #853874, #774529
x /= 8;
y /= 2;
x2 /= 8;
y2 /= 2;
}
return getDist(x, y, x2, y2);
}
int ScummEngine::findObject(int x, int y) {
int i, b;
byte a;
const int mask = (_version <= 2) ? 0x8 : 0xF;
for (i = 1; i < _numLocalObjects; i++) {
if ((_objs[i].obj_nr < 1) || getClass(_objs[i].obj_nr, kObjectClassUntouchable))
continue;
if ((_version <= 2) && _objs[i].state & 0x2)
continue;
b = i;
do {
a = _objs[b].parentstate;
b = _objs[b].parent;
if (b == 0) {
if (_objs[i].x_pos <= x && _objs[i].width + _objs[i].x_pos > x &&
_objs[i].y_pos <= y && _objs[i].height + _objs[i].y_pos > y)
return _objs[i].obj_nr;
break;
}
} while ((_objs[b].state & mask) == a);
}
return 0;
}
void ScummEngine::drawRoomObject(int i, int arg) {
ObjectData *od;
byte a;
const int mask = (_version <= 2) ? 0x8 : 0xF;
od = &_objs[i];
if ((i < 1) || (od->obj_nr < 1) || !od->state)
return;
do {
a = od->parentstate;
if (!od->parent) {
if ((_version <= 6 && !(_features & GF_HUMONGOUS)) || od->fl_object_index == 0)
drawObject(i, arg);
break;
}
od = &_objs[od->parent];
} while ((od->state & mask) == a);
}
void ScummEngine::drawRoomObjects(int arg) {
int i;
const int mask = (_version <= 2) ? 0x8 : 0xF;
if (_features & GF_DRAWOBJ_OTHER_ORDER) {
for (i = 1; i < _numLocalObjects; i++)
if (_objs[i].obj_nr > 0)
drawRoomObject(i, arg);
} else {
for (i = (_numLocalObjects-1); i > 0; i--)
if (_objs[i].obj_nr > 0 && (_objs[i].state & mask)) {
drawRoomObject(i, arg);
}
}
}
static const uint32 IMxx_tags[] = {
MKID('IM00'),
MKID('IM01'),
MKID('IM02'),
MKID('IM03'),
MKID('IM04'),
MKID('IM05'),
MKID('IM06'),
MKID('IM07'),
MKID('IM08'),
MKID('IM09'),
MKID('IM0A'),
MKID('IM0B'),
MKID('IM0C'),
MKID('IM0D'),
MKID('IM0E'),
MKID('IM0F')
};
void ScummEngine::drawObject(int obj, int arg) {
if (_skipDrawObject)
return;
ObjectData &od = _objs[obj];
int xpos, ypos, height, width;
const byte *ptr;
int x, a, numstrip;
int tmp;
if (_bgNeedsRedraw)
arg = 0;
if (od.obj_nr == 0)
return;
checkRange(_numGlobalObjects - 1, 0, od.obj_nr, "Object %d out of range in drawObject");
xpos = od.x_pos / 8;
ypos = od.y_pos;
width = od.width / 8;
height = od.height &= 0xFFFFFFF8; // Mask out last 3 bits
// Short circuit for objects which aren't visible at all.
if (width == 0 || xpos > _screenEndStrip || xpos + width < _screenStartStrip)
return;
ptr = getOBIMFromObject(od);
if (_features & GF_OLD_BUNDLE)
ptr += 0;
else
ptr = getObjectImage(ptr, getState(od.obj_nr));
if (!ptr)
return;
x = 0xFFFF;
for (a = numstrip = 0; a < width; a++) {
tmp = xpos + a;
if (arg == 1 && _screenStartStrip != tmp)
continue;
if (arg == 2 && _screenEndStrip != tmp)
continue;
if (tmp < _screenStartStrip || tmp > _screenEndStrip)
continue;
setGfxUsageBit(tmp, USAGE_BIT_DIRTY);
if (tmp < x)
x = tmp;
numstrip++;
}
if (numstrip != 0) {
byte flags = (_features & GF_HUMONGOUS) ? 0 : Gdi::dbAllowMaskOr;
if (_version == 1) {
gdi._C64ObjectMode = true;
gdi.decodeC64Gfx(ptr, gdi._C64ObjectMap, width * (height / 8) * 3);
}
// Sam & Max needs this to fix object-layering problems with
// the inventory and conversation icons.
if ((_version >= 7 || _gameId == GID_SAMNMAX) && getClass(od.obj_nr, kObjectClassIgnoreBoxes))
flags |= Gdi::dbDrawMaskOnAll;
if (_heversion >= 70 && findResource(MKID('SMAP'), ptr) == NULL)
gdi.drawBMAPObject(ptr, &virtscr[0], obj, od.x_pos * 8, od.y_pos * 8, od.width * 8, od.height * 8);
else
gdi.drawBitmap(ptr, &virtscr[0], x, ypos, width * 8, height, x - xpos, numstrip, flags);
}
}
void ScummEngine::clearRoomObjects() {
int i;
if (_features & GF_SMALL_HEADER) {
for (i = 0; i < _numLocalObjects; i++) {
_objs[i].obj_nr = 0;
}
} else {
// FIXME: Locking/FlObjects stuff?
for (i = 0; i < _numLocalObjects; i++) {
if (_objs[i].obj_nr < 1) // Optimise codepath
continue;
// Nuke all non-flObjects (flObjects are nuked in script.cpp)
if (_objs[i].fl_object_index == 0) {
_objs[i].obj_nr = 0;
} else {
// Nuke all unlocked flObjects
if (!(res.flags[rtFlObject][_objs[i].fl_object_index] & RF_LOCK)) {
nukeResource(rtFlObject, _objs[i].fl_object_index);
_objs[i].obj_nr = 0;
_objs[i].fl_object_index = 0;
}
}
}
}
}
void ScummEngine::loadRoomObjects() {
int i, j;
ObjectData *od;
const byte *ptr;
uint16 obim_id;
const byte *room, *searchptr, *rootptr;
const ImageHeader *imhd;
const RoomHeader *roomhdr;
const CodeHeader *cdhd;
CHECK_HEAP
room = getResourceAddress(rtRoom, _roomResource);
roomhdr = (const RoomHeader *)findResourceData(MKID('RMHD'), room);
if (_version == 8)
_numObjectsInRoom = (byte)READ_LE_UINT32(&(roomhdr->v8.numObjects));
else if (_version == 7)
_numObjectsInRoom = (byte) READ_LE_UINT16(&(roomhdr->v7.numObjects));
else
_numObjectsInRoom = (byte) READ_LE_UINT16(&(roomhdr->old.numObjects));
if (_numObjectsInRoom == 0)
return;
if (_numObjectsInRoom > _numLocalObjects)
error("More than %d objects in room %d", _numLocalObjects, _roomResource);
if (_version == 8)
searchptr = rootptr = getResourceAddress(rtRoomScripts, _roomResource);
else
searchptr = rootptr = room;
assert(searchptr);
// Load in new room objects
ResourceIterator obcds(searchptr, false);
for (i = 0; i < _numObjectsInRoom; i++) {
od = &_objs[findLocalObjectSlot()];
ptr = obcds.findNext(MKID('OBCD'));
if (ptr == NULL)
error("Room %d missing object code block(s)", _roomResource);
od->OBCDoffset = ptr - rootptr;
cdhd = (const CodeHeader *)findResourceData(MKID('CDHD'), ptr);
if (_version >= 7)
od->obj_nr = READ_LE_UINT16(&(cdhd->v7.obj_id));
else if (_version == 6)
od->obj_nr = READ_LE_UINT16(&(cdhd->v6.obj_id));
else
od->obj_nr = READ_LE_UINT16(&(cdhd->v5.obj_id));
if (_dumpScripts) {
char buf[32];
sprintf(buf, "roomobj-%d-", _roomResource);
ptr = findResource(MKID('VERB'), ptr);
dumpResource(buf, od->obj_nr, ptr);
}
}
searchptr = room;
ResourceIterator obims(room, false);
for (i = 0; i < _numObjectsInRoom; i++) {
ptr = obims.findNext(MKID('OBIM'));
if (ptr == NULL)
error("Room %d missing image blocks(s)", _roomResource);
imhd = (const ImageHeader *)findResourceData(MKID('IMHD'), ptr);
if (_version == 8)
// In V8, IMHD has no obj_id, but rather a name string. We map the name
// back to an object id using a table derived from the DOBJ resource.
obim_id = _objectIDMap[imhd->v8.name];
else if (_version == 7)
obim_id = READ_LE_UINT16(&imhd->v7.obj_id);
else
obim_id = READ_LE_UINT16(&imhd->old.obj_id);
for (j = 1; j < _numLocalObjects; j++) {
if (_objs[j].obj_nr == obim_id)
_objs[j].OBIMoffset = ptr - room;
}
}
for (i = 1; i < _numLocalObjects; i++) {
if (_objs[i].obj_nr && !_objs[i].fl_object_index)
setupRoomObject(&_objs[i], room);
}
CHECK_HEAP
}
void ScummEngine::loadRoomObjectsOldBundle() {
int i;
ObjectData *od;
const byte *room, *ptr;
CHECK_HEAP
room = getResourceAddress(rtRoom, _roomResource);
_numObjectsInRoom = room[20];
if (_numObjectsInRoom == 0)
return;
if (_numObjectsInRoom > _numLocalObjects)
error("More than %d objects in room %d", _numLocalObjects, _roomResource);
if (_version <= 2)
ptr = room + 28;
else
ptr = room + 29;
for (i = 0; i < _numObjectsInRoom; i++) {
od = &_objs[findLocalObjectSlot()];
od->OBIMoffset = READ_LE_UINT16(ptr);
od->OBCDoffset = READ_LE_UINT16(ptr + 2 * _numObjectsInRoom);
setupRoomObject(od, room);
ptr += 2;
if (_dumpScripts) {
char buf[32];
sprintf(buf, "roomobj-%d-", _roomResource);
dumpResource(buf, od->obj_nr, room + od->OBCDoffset);
}
}
CHECK_HEAP
}
void ScummEngine::loadRoomObjectsSmall() {
int i, j;
ObjectData *od;
const byte *ptr;
uint16 obim_id;
const byte *room;
const RoomHeader *roomhdr;
CHECK_HEAP
room = getResourceAddress(rtRoom, _roomResource);
roomhdr = (const RoomHeader *)findResourceData(MKID('RMHD'), room);
_numObjectsInRoom = (byte) READ_LE_UINT16(&(roomhdr->old.numObjects));
if (_numObjectsInRoom == 0)
return;
if (_numObjectsInRoom > _numLocalObjects)
error("More than %d objects in room %d", _numLocalObjects, _roomResource);
ResourceIterator obcds(room, true);
for (i = 0; i < _numObjectsInRoom; i++) {
od = &_objs[findLocalObjectSlot()];
ptr = obcds.findNext(MKID('OBCD'));
if (ptr == NULL)
error("Room %d missing object code block(s)", _roomResource);
od->OBCDoffset = ptr - room;
od->obj_nr = READ_LE_UINT16(ptr + 6);
if (_dumpScripts) {
char buf[32];
sprintf(buf, "roomobj-%d-", _roomResource);
dumpResource(buf, od->obj_nr, ptr);
}
}
ResourceIterator obims(room, true);
for (i = 0; i < _numObjectsInRoom; i++) {
ptr = obims.findNext(MKID('OBIM'));
if (ptr == NULL)
error("Room %d missing image blocks(s)", _roomResource);
obim_id = READ_LE_UINT16(ptr + 6);
for (j = 1; j < _numLocalObjects; j++) {
if (_objs[j].obj_nr == obim_id)
_objs[j].OBIMoffset = ptr - room;
}
}
for (i = 1; i < _numLocalObjects; i++) {
if (_objs[i].obj_nr && !_objs[i].fl_object_index) {
setupRoomObject(&_objs[i], room);
}
}
CHECK_HEAP
}
void ScummEngine::setupRoomObject(ObjectData *od, const byte *room, const byte *searchptr) {
const CodeHeader *cdhd = NULL;
const ImageHeader *imhd = NULL;
assert(room);
if (_features & GF_SMALL_HEADER) {
const byte *ptr = room + od->OBCDoffset;
if (_features & GF_OLD_BUNDLE)
ptr -= 2;
od->obj_nr = READ_LE_UINT16(ptr + 6);
od->x_pos = *(ptr + 9) * 8;
od->y_pos = ((*(ptr + 10)) & 0x7F) * 8;
od->parentstate = (*(ptr + 10) & 0x80) ? 1 : 0;
if (_version <= 2)
od->parentstate *= 8;
od->width = *(ptr + 11) * 8;
od->parent = *(ptr + 12);
if (_version <= 2) {
od->walk_x = *(ptr + 13) * 8;
od->walk_y = (*(ptr + 14) & 0x1f) * 8;
od->actordir = (*(ptr + 15)) & 7;
od->height = *(ptr + 15) & 0xf8;
} else {
od->walk_x = READ_LE_UINT16(ptr + 13);
od->walk_y = READ_LE_UINT16(ptr + 15);
od->actordir = (*(ptr + 17)) & 7;
od->height = *(ptr + 17) & 0xf8;
}
return;
}
if (searchptr == NULL) {
if (_version == 8)
searchptr = getResourceAddress(rtRoomScripts, _roomResource);
else
searchptr = room;
}
cdhd = (const CodeHeader *)findResourceData(MKID('CDHD'), searchptr + od->OBCDoffset);
if (cdhd == NULL)
error("Room %d missing CDHD blocks(s)", _roomResource);
if (_version == 8) {
od->obj_nr = READ_LE_UINT16(&(cdhd->v7.obj_id));
od->parent = cdhd->v7.parent;
od->parentstate = cdhd->v7.parentstate;
imhd = (const ImageHeader *)findResourceData(MKID('IMHD'), room + od->OBIMoffset);
od->x_pos = (int)READ_LE_UINT32(&imhd->v8.x_pos);
od->y_pos = (int)READ_LE_UINT32(&imhd->v8.y_pos);
od->width = (uint)READ_LE_UINT32(&imhd->v8.width);
od->height = (uint)READ_LE_UINT32(&imhd->v8.height);
// HACK: This is done sinec an angle doesn't fit into a byte (360 > 256)
od->actordir = toSimpleDir(1, READ_LE_UINT32(&imhd->v8.actordir));
} else if (_version == 7) {
od->obj_nr = READ_LE_UINT16(&(cdhd->v7.obj_id));
od->parent = cdhd->v7.parent;
od->parentstate = cdhd->v7.parentstate;
imhd = (const ImageHeader *)findResourceData(MKID('IMHD'), room + od->OBIMoffset);
od->x_pos = READ_LE_UINT16(&imhd->v7.x_pos);
od->y_pos = READ_LE_UINT16(&imhd->v7.y_pos);
od->width = READ_LE_UINT16(&imhd->v7.width);
od->height = READ_LE_UINT16(&imhd->v7.height);
od->actordir = (byte) READ_LE_UINT16(&imhd->v7.actordir);
} else if (_version == 6) {
od->obj_nr = READ_LE_UINT16(&(cdhd->v6.obj_id));
od->width = READ_LE_UINT16(&cdhd->v6.w);
od->height = READ_LE_UINT16(&cdhd->v6.h);
od->x_pos = ((int16)READ_LE_UINT16(&cdhd->v6.x));
od->y_pos = ((int16)READ_LE_UINT16(&cdhd->v6.y));
if (cdhd->v6.flags == 0x80) {
od->parentstate = 1;
} else {
od->parentstate = (cdhd->v6.flags & 0xF);
}
od->parent = cdhd->v6.parent;
od->actordir = cdhd->v6.actordir;
} else {
od->obj_nr = READ_LE_UINT16(&(cdhd->v5.obj_id));
od->width = cdhd->v5.w * 8;
od->height = cdhd->v5.h * 8;
od->x_pos = cdhd->v5.x * 8;
od->y_pos = cdhd->v5.y * 8;
if (cdhd->v5.flags == 0x80) {
od->parentstate = 1;
} else {
od->parentstate = (cdhd->v5.flags & 0xF);
}
od->parent = cdhd->v5.parent;
od->walk_x = READ_LE_UINT16(&cdhd->v5.walk_x);
od->walk_y = READ_LE_UINT16(&cdhd->v5.walk_y);
od->actordir = cdhd->v5.actordir;
}
od->fl_object_index = 0;
}
void ScummEngine::fixObjectFlags() {
int i;
ObjectData *od = &_objs[1];
for (i = 1; i < _numLocalObjects; i++, od++) {
if (od->obj_nr > 0)
od->state = getState(od->obj_nr);
}
}
void ScummEngine::processDrawQue() {
int i, j;
for (i = 0; i < _drawObjectQueNr; i++) {
j = _drawObjectQue[i];
if (j)
drawObject(j, 0);
}
_drawObjectQueNr = 0;
}
void ScummEngine::addObjectToDrawQue(int object) {
if ((unsigned int)_drawObjectQueNr >= ARRAYSIZE(_drawObjectQue))
error("Draw Object Que overflow");
_drawObjectQue[_drawObjectQueNr++] = object;
}
void ScummEngine::removeObjectFromDrawQue(int object) {
if (_drawObjectQueNr <= 0)
return;
int i;
for (i = 0; i < _drawObjectQueNr; i++) {
if (_drawObjectQue[i] == object)
_drawObjectQue[i] = 0;
}
}
void ScummEngine::clearDrawObjectQueue() {
_drawObjectQueNr = 0;
}
void ScummEngine::clearOwnerOf(int obj) {
int i, j;
uint16 *a;
stopObjectScript(obj);
if (getOwner(obj) == OF_OWNER_ROOM) {
i = 0;
do {
if (_objs[i].obj_nr == obj) {
if (!_objs[i].fl_object_index)
return;
nukeResource(rtFlObject, _objs[i].fl_object_index);
_objs[i].obj_nr = 0;
_objs[i].fl_object_index = 0;
}
} while (++i < _numLocalObjects);
return;
}
for (i = 0; i < _numInventory; i++) {
if (_inventory[i] == obj) {
j = whereIsObject(obj);
if (j == WIO_INVENTORY) {
nukeResource(rtInventory, i);
_inventory[i] = 0;
}
a = _inventory;
for (i = 0; i < _numInventory - 1; i++, a++) {
if (!a[0] && a[1]) {
a[0] = a[1];
a[1] = 0;
_baseInventoryItems[i] = _baseInventoryItems[i + 1];
_baseInventoryItems[i + 1] = NULL;
}
}
return;
}
}
}
/**
* Mark the rectangle covered by the given object as dirty, thus eventually
* ensuring a redraw of that area. This function is typically invoked when an
* object gets removed from the current room, or when its state changed.
*/
void ScummEngine::markObjectRectAsDirty(int obj) {
int i, strip;
for (i = 1; i < _numLocalObjects; i++) {
if (_objs[i].obj_nr == (uint16)obj) {
if (_objs[i].width != 0) {
const int minStrip = MAX(_screenStartStrip, _objs[i].x_pos / 8);
const int maxStrip = MIN(_screenEndStrip+1, _objs[i].x_pos / 8 + _objs[i].width / 8);
for (strip = minStrip; strip < maxStrip; strip++) {
setGfxUsageBit(strip, USAGE_BIT_DIRTY);
}
}
_bgNeedsRedraw = true;
return;
}
}
}
const byte *ScummEngine::getObjOrActorName(int obj) {
byte *objptr;
int i;
if (obj < _numActors)
return derefActor(obj, "getObjOrActorName")->getActorName();
for (i = 0; i < _numNewNames; i++) {
if (_newNames[i] == obj) {
debug(5, "Found new name for object %d at _newNames[%d]", obj, i);
return getResourceAddress(rtObjectName, i);
}
}
objptr = getOBCDFromObject(obj);
if (objptr == NULL)
return NULL;
if (_features & GF_SMALL_HEADER) {
byte offset = 0;
if (_version <= 2)
offset = *(objptr + 14);
else if (_features & GF_OLD_BUNDLE)
offset = *(objptr + 16);
else
offset = *(objptr + 18);
return (objptr + offset);
}
return findResourceData(MKID('OBNA'), objptr);
}
void ScummEngine::setObjectName(int obj) {
int i;
if (obj < _numActors)
error("Can't set actor %d name with new-name-of", obj);
for (i = 0; i < _numNewNames; i++) {
if (_newNames[i] == obj) {
nukeResource(rtObjectName, i);
_newNames[i] = 0;
break;
}
}
for (i = 0; i < _numNewNames; i++) {
if (_newNames[i] == 0) {
loadPtrToResource(rtObjectName, i, NULL);
_newNames[i] = obj;
runInventoryScript(0);
return;
}
}
error("New name of %d overflows name table (max = %d)", obj, _numNewNames);
}
uint32 ScummEngine::getOBCDOffs(int object) const {
int i;
if (_objectOwnerTable[object] != OF_OWNER_ROOM)
return 0;
for (i = (_numLocalObjects-1); i > 0; i--) {
if (_objs[i].obj_nr == object) {
if (_objs[i].fl_object_index != 0)
return 8;
return _objs[i].OBCDoffset;
}
}
return 0;
}
byte *ScummEngine::getOBCDFromObject(int obj) {
int i;
byte *ptr;
if (_objectOwnerTable[obj] != OF_OWNER_ROOM) {
for (i = 0; i < _numInventory; i++) {
if (_inventory[i] == obj)
return getResourceAddress(rtInventory, i);
}
} else {
for (i = (_numLocalObjects-1); i > 0; --i) {
if (_objs[i].obj_nr == obj) {
if (_objs[i].fl_object_index) {
assert(_objs[i].OBCDoffset == 8);
ptr = getResourceAddress(rtFlObject, _objs[i].fl_object_index);
} else if (_version == 8)
ptr = getResourceAddress(rtRoomScripts, _roomResource);
else
ptr = getResourceAddress(rtRoom, _roomResource);
assert(ptr);
return ptr + _objs[i].OBCDoffset;
}
}
}
return 0;
}
const byte *ScummEngine::getOBIMFromObject(const ObjectData &od) {
const byte *ptr;
if (od.fl_object_index) {
ptr = getResourceAddress(rtFlObject, od.fl_object_index);
ptr = findResource(MKID('OBIM'), ptr);
} else {
ptr = getResourceAddress(rtRoom, _roomResource);
if (ptr)
ptr += od.OBIMoffset;
}
return ptr;
}
const byte *ScummEngine::getObjectImage(const byte *ptr, int state) {
assert(ptr);
if (_features & GF_OLD_BUNDLE)
ptr += 0;
else if (_features & GF_SMALL_HEADER) {
ptr += 8;
} else if (_version == 8) {
// The OBIM contains an IMAG, which in turn contains a WRAP, which contains
// an OFFS chunk and multiple BOMP/SMAP chunks. To find the right BOMP/SMAP,
// we use the offsets in the OFFS chunk,
ptr = findResource(MKID('IMAG'), ptr);
if (!ptr)
return 0;
ptr = findResource(MKID('WRAP'), ptr);
if (!ptr)
return 0;
ptr = findResource(MKID('OFFS'), ptr);
if (!ptr)
return 0;
// Get the address of the specified SMAP (corresponding to IMxx)
ptr += READ_LE_UINT32(ptr + 4 + 4*state);
} else {
ptr = findResource(IMxx_tags[state], ptr);
}
return ptr;
}
void ScummEngine::addObjectToInventory(uint obj, uint room) {
int idx, slot;
uint32 size;
const byte *ptr;
byte *dst;
FindObjectInRoom foir;
debug(1, "Adding object %d from room %d into inventory", obj, room);
CHECK_HEAP
if (whereIsObject(obj) == WIO_FLOBJECT) {
idx = getObjectIndex(obj);
assert(idx >= 0);
ptr = getResourceAddress(rtFlObject, _objs[idx].fl_object_index) + 8;
size = READ_BE_UINT32(ptr + 4);
} else {
findObjectInRoom(&foir, foCodeHeader, obj, room);
if (_features & GF_OLD_BUNDLE)
size = READ_LE_UINT16(foir.obcd);
else if (_features & GF_SMALL_HEADER)
size = READ_LE_UINT32(foir.obcd);
else
size = READ_BE_UINT32(foir.obcd + 4);
ptr = foir.obcd;
}
slot = getInventorySlot();
_inventory[slot] = obj;
dst = createResource(rtInventory, slot, size);
assert(dst);
memcpy(dst, ptr, size);
CHECK_HEAP
}
void ScummEngine::findObjectInRoom(FindObjectInRoom *fo, byte findWhat, uint id, uint room) {
const CodeHeader *cdhd;
int i, numobj;
const byte *roomptr, *obcdptr, *obimptr, *searchptr;
const ImageHeader *imhd;
int id2;
int id3;
if (findWhat & foCheckAlreadyLoaded && getObjectIndex(id) != -1) {
if (_features & GF_OLD_BUNDLE) {
// I am not sure if this is even needed for old games...
// but using RES_SIZE definitely won't work with OLD_BUNDLE, since it
// assumes the size is 32 bit but in old games it's 16 bit
error("findObjectInRoom foCheckAlreadyLoaded NYI for GF_OLD_BUNDLE (id = %d, room = %d)", id, room);
}
fo->obcd = obcdptr = getOBCDFromObject(id);
assert(obcdptr);
fo->obim = obimptr = obcdptr + RES_SIZE(obcdptr);
fo->cdhd = (const CodeHeader *)findResourceData(MKID('CDHD'), obcdptr);
fo->imhd = (const ImageHeader *)findResourceData(MKID('IMHD'), obimptr);
return;
}
fo->roomptr = roomptr = getResourceAddress(rtRoom, room);
if (!roomptr)
error("findObjectInRoom: failed getting roomptr to %d", room);
if (_features & GF_OLD_BUNDLE) {
numobj = roomptr[20];
} else {
const RoomHeader *roomhdr = (const RoomHeader *)findResourceData(MKID('RMHD'), roomptr);
if (_version == 8)
numobj = READ_LE_UINT32(&(roomhdr->v8.numObjects));
else if (_version == 7)
numobj = READ_LE_UINT16(&(roomhdr->v7.numObjects));
else
numobj = READ_LE_UINT16(&(roomhdr->old.numObjects));
}
if (numobj == 0)
error("findObjectInRoom: No object found in room %d", room);
if (numobj > _numLocalObjects)
error("findObjectInRoom: More (%d) than %d objects in room %d", numobj, _numLocalObjects, room);
if (_features & GF_OLD_BUNDLE) {
if (_version <= 2)
searchptr = roomptr + 28;
else
searchptr = roomptr + 29;
for (i = 0; i < numobj; i++) {
obimptr = roomptr + READ_LE_UINT16(searchptr);
obcdptr = roomptr + READ_LE_UINT16(searchptr + 2 * _numObjectsInRoom);
id2 = READ_LE_UINT16(obcdptr + 4);
if (id2 == (uint16)id) {
if (findWhat & foCodeHeader) {
fo->obcd = obcdptr;
fo->cdhd = (const CodeHeader *)(obcdptr + 10); // TODO - FIXME
}
if (findWhat & foImageHeader) {
fo->obim = obimptr;
fo->imhd = NULL;
}
break;
}
searchptr += 2;
}
return;
}
if (findWhat & foCodeHeader) {
if (_version == 8)
searchptr = getResourceAddress(rtRoomScripts, room);
else
searchptr = roomptr;
assert(searchptr);
ResourceIterator obcds(searchptr, (_features & GF_SMALL_HEADER) != 0);
for (i = 0;;) {
obcdptr = obcds.findNext(MKID('OBCD'));
if (obcdptr == NULL)
error("findObjectInRoom: Not enough code blocks in room %d", room);
cdhd = (const CodeHeader *)findResourceData(MKID('CDHD'), obcdptr);
if (_features & GF_SMALL_HEADER)
id2 = READ_LE_UINT16(obcdptr + 6);
else if (_version >= 7)
id2 = READ_LE_UINT16(&(cdhd->v7.obj_id));
else if (_version == 6)
id2 = READ_LE_UINT16(&(cdhd->v6.obj_id));
else
id2 = READ_LE_UINT16(&(cdhd->v5.obj_id));
if (id2 == (uint16)id) {
fo->obcd = obcdptr;
fo->cdhd = cdhd;
break;
}
if (++i == numobj)
error("findObjectInRoom: Object %d not found in room %d", id, room);
}
}
roomptr = fo->roomptr;
if (findWhat & foImageHeader) {
ResourceIterator obims(roomptr, (_features & GF_SMALL_HEADER) != 0);
for (i = 0;;) {
obimptr = obims.findNext(MKID('OBIM'));
if (obimptr == NULL)
error("findObjectInRoom: Not enough image blocks in room %d", room);
imhd = (const ImageHeader *)findResourceData(MKID('IMHD'), obimptr);
if (_features & GF_SMALL_HEADER)
id3 = READ_LE_UINT16(obimptr + 6);
else if (_version == 8)
// In V8, IMHD has no obj_id, but rather a name string. We map the name
// back to an object id using a table derived from the DOBJ resource.
id3 = _objectIDMap[imhd->v8.name];
else if (_version == 7)
id3 = READ_LE_UINT16(&imhd->v7.obj_id);
else
id3 = READ_LE_UINT16(&imhd->old.obj_id);
if (id3 == (uint16)id) {
fo->obim = obimptr;
fo->imhd = imhd;
break;
}
if (++i == numobj)
error("findObjectInRoom: Object %d image not found in room %d", id, room);
}
}
}
int ScummEngine::getInventorySlot() {
int i;
for (i = 0; i < _numInventory; i++) {
if (_inventory[i] == 0)
return i;
}
error("Inventory full, %d max items", _numInventory);
return -1;
}
void ScummEngine::setOwnerOf(int obj, int owner) {
ScriptSlot *ss;
// In Sam & Max this is necessary, or you won't get your stuff back
// from the Lost and Found tent after riding the Cone of Tragedy. But
// it probably applies to all V6+ games. See bugs #493153 and #907113.
// FT disassembly is checked, behaviour is correct. [sev]
int arg = (_version >= 6) ? obj : 0;
if (owner == 0) {
clearOwnerOf(obj);
ss = &vm.slot[_currentScript];
if (ss->where == WIO_INVENTORY && _inventory[ss->number] == obj) {
putOwner(obj, 0);
runInventoryScript(arg);
stopObjectCode();
return;
}
}
putOwner(obj, owner);
runInventoryScript(arg);
}
int ScummEngine::getObjX(int obj) {
if (obj < _numActors) {
if (obj < 1)
return 0; /* fix for indy4's map */
return derefActor(obj, "getObjX")->_pos.x;
} else {
if (whereIsObject(obj) == WIO_NOT_FOUND)
return -1;
int x, y;
getObjectOrActorXY(obj, x, y);
return x;
}
}
int ScummEngine::getObjY(int obj) {
if (obj < _numActors) {
if (obj < 1)
return 0; /* fix for indy4's map */
return derefActor(obj, "getObjY")->_pos.y;
} else {
if (whereIsObject(obj) == WIO_NOT_FOUND)
return -1;
int x, y;
getObjectOrActorXY(obj, x, y);
return y;
}
}
int ScummEngine::getObjOldDir(int obj) {
return newDirToOldDir(getObjNewDir(obj));
}
int ScummEngine::getObjNewDir(int obj) {
int dir;
if (obj < _numActors) {
dir = derefActor(obj, "getObjNewDir")->getFacing();
} else {
int x, y;
getObjectXYPos(obj, x, y, dir);
}
return dir;
}
int ScummEngine::findInventory(int owner, int idx) {
int count = 1, i, obj;
for (i = 0; i < _numInventory; i++) {
obj = _inventory[i];
if (obj && getOwner(obj) == owner && count++ == idx)
return obj;
}
return 0;
}
int ScummEngine::getInventoryCount(int owner) {
int i, obj;
int count = 0;
for (i = 0; i < _numInventory; i++) {
obj = _inventory[i];
if (obj && getOwner(obj) == owner)
count++;
}
return count;
}
void ScummEngine::setObjectState(int obj, int state, int x, int y) {
int i;
i = getObjectIndex(obj);
if (i == -1) {
warning("setObjectState: no such object %d", obj);
return;
}
if (x != -1) {
_objs[i].x_pos = x * 8;
_objs[i].y_pos = y * 8;
}
addObjectToDrawQue(i);
putState(obj, state);
}
int ScummEngine::getDistanceBetween(bool is_obj_1, int b, int c, bool is_obj_2, int e, int f) {
int i, j;
int x, y;
int x2, y2;
j = i = 0xFF;
if (is_obj_1) {
if (getObjectOrActorXY(b, x, y) == -1)
return -1;
if (b < _numActors)
i = derefActor(b, "unkObjProc1")->scalex;
} else {
x = b;
y = c;
}
if (is_obj_2) {
if (getObjectOrActorXY(e, x2, y2) == -1)
return -1;
if (e < _numActors)
j = derefActor(e, "unkObjProc1(2)")->scalex;
} else {
x2 = e;
y2 = f;
}
return getDist(x, y, x2, y2) * 0xFF / ((i + j) / 2);
}
void ScummEngine::nukeFlObjects(int min, int max) {
ObjectData *od;
int i;
warning("nukeFlObjects(%d,%d)", min, max);
for (i = (_numLocalObjects-1), od = _objs; --i >= 0; od++)
if (od->fl_object_index && od->obj_nr >= min && od->obj_nr <= max) {
nukeResource(rtFlObject, od->fl_object_index);
od->obj_nr = 0;
od->fl_object_index = 0;
}
}
void ScummEngine::enqueueObject(int objectNumber, int objectX, int objectY, int objectWidth,
int objectHeight, int scaleX, int scaleY, int image, int mode) {
BlastObject *eo;
ObjectData *od;
if (_blastObjectQueuePos >= (int)ARRAYSIZE(_blastObjectQueue)) {
warning("enqueueObject: overflow");
return;
}
int idx = getObjectIndex(objectNumber);
assert(idx >= 0);
eo = &_blastObjectQueue[_blastObjectQueuePos++];
eo->number = objectNumber;
eo->rect.left = objectX + (camera._cur.x & 7);
eo->rect.top = objectY + _screenTop;
if (objectWidth == 0) {
od = &_objs[idx];
eo->rect.right = eo->rect.left + od->width;
} else {
eo->rect.right = eo->rect.left + objectWidth;
}
if (objectHeight == 0) {
od = &_objs[idx];
eo->rect.bottom = eo->rect.top + od->height;
} else {
eo->rect.bottom = eo->rect.top + objectHeight;
}
eo->scaleX = scaleX;
eo->scaleY = scaleY;
eo->image = image;
eo->mode = mode;
}
void ScummEngine::drawBlastObjects() {
BlastObject *eo;
int i;
eo = _blastObjectQueue;
for (i = 0; i < _blastObjectQueuePos; i++, eo++) {
drawBlastObject(eo);
}
}
void ScummEngine::drawBlastObject(BlastObject *eo) {
VirtScreen *vs;
const byte *bomp, *ptr;
int objnum;
BompDrawData bdd;
vs = &virtscr[0];
checkRange(_numGlobalObjects - 1, 30, eo->number, "Illegal Blast object %d");
objnum = getObjectIndex(eo->number);
if (objnum == -1)
error("drawBlastObject: getObjectIndex on BlastObject %d failed", eo->number);
ptr = getOBIMFromObject(_objs[objnum]);
if (!ptr)
error("BlastObject object %d image not found", eo->number);
const byte *img = getObjectImage(ptr, eo->image);
if (_version == 8) {
assert(img);
bomp = img + 8;
} else {
if (!img)
img = getObjectImage(ptr, 1); // Backward compatibility with samnmax blast objects
assert(img);
bomp = findResourceData(MKID('BOMP'), img);
}
if (!bomp)
error("object %d is not a blast object", eo->number);
if (_version == 8) {
bdd.srcwidth = READ_LE_UINT32(&((const BompHeader *)bomp)->v8.width);
bdd.srcheight = READ_LE_UINT32(&((const BompHeader *)bomp)->v8.height);
} else {
bdd.srcwidth = READ_LE_UINT16(&((const BompHeader *)bomp)->old.width);
bdd.srcheight = READ_LE_UINT16(&((const BompHeader *)bomp)->old.height);
}
bdd.out = vs->getPixels(0, 0);
bdd.outwidth = vs->w;
bdd.outheight = vs->h;
// Skip the bomp header
if (_version == 8) {
bdd.dataptr = bomp + 8;
} else {
bdd.dataptr = bomp + 10;
}
bdd.x = eo->rect.left;
bdd.y = eo->rect.top;
bdd.scale_x = (byte)eo->scaleX;
bdd.scale_y = (byte)eo->scaleY;
if ((bdd.scale_x != 255) || (bdd.scale_y != 255)) {
byte bomp_scaling_x[64], bomp_scaling_y[64];
bdd.scalingXPtr = bomp_scaling_x;
bdd.scalingYPtr = bomp_scaling_y;
bdd.scaleRight = setupBompScale(bomp_scaling_x, bdd.srcwidth, bdd.scale_x);
bdd.scaleBottom = setupBompScale(bomp_scaling_y, bdd.srcheight, bdd.scale_y);
bdd.shadowMode = 0;
drawBomp(bdd, false);
} else {
bdd.scalingXPtr = NULL;
bdd.scalingYPtr = NULL;
bdd.scaleRight = 0;
bdd.scaleBottom = 0;
bdd.shadowMode = eo->mode;
drawBomp(bdd, false);
}
markRectAsDirty(vs->number, bdd.x, bdd.x + bdd.srcwidth, bdd.y, bdd.y + bdd.srcheight);
}
void ScummEngine::removeBlastObjects() {
BlastObject *eo;
int i;
eo = _blastObjectQueue;
for (i = 0; i < _blastObjectQueuePos; i++, eo++) {
removeBlastObject(eo);
}
clearEnqueue();
}
void ScummEngine::removeBlastObject(BlastObject *eo) {
VirtScreen *vs = &virtscr[0];
Common::Rect r;
int left_strip, right_strip;
int i;
r = eo->rect;
if (r.bottom < 0 || r.right < 0 || r.top > vs->h || r.left > vs->w)
return;
if (r.top < 0)
r.top = 0;
if (r.bottom > vs->h)
r.bottom = vs->h;
if (r.left < 0)
r.left = 0;
if (r.right > vs->w)
r.right = vs->w;
left_strip = r.left / 8;
right_strip = (r.right - 1) / 8;
if (left_strip < 0)
left_strip = 0;
if (_version >= 7) {
if (right_strip > 409)
right_strip = 409;
} else {
if (right_strip >= 200)
right_strip = 200;
}
for (i = left_strip; i <= right_strip; i++)
gdi.resetBackground(r.top, r.bottom, i);
markRectAsDirty(kMainVirtScreen, r, USAGE_BIT_RESTORED);
}
int ScummEngine::findLocalObjectSlot() {
int i;
for (i = 1; i < _numLocalObjects; i++) {
if (!_objs[i].obj_nr) {
memset(&_objs[i], 0, sizeof(_objs[i]));
return i;
}
}
return -1;
}
int ScummEngine::findFlObjectSlot() {
int i;
for (i = 1; i < _numFlObject; i++) {
if (_baseFLObject[i] == NULL)
return i;
}
error("findFlObjectSlot: Out of FLObject slots");
return -1;
}
void ScummEngine::loadFlObject(uint object, uint room) {
FindObjectInRoom foir;
int slot, objslot;
ObjectData *od;
byte *flob;
uint32 obcd_size, obim_size, flob_size;
bool isRoomLocked, isRoomScriptsLocked;
// Don't load an already loaded object
if (whereIsObject(object) != WIO_NOT_FOUND)
return;
// Locate the object in the room resource
findObjectInRoom(&foir, foImageHeader | foCodeHeader, object, room);
// Add an entry for the new floating object in the local object table
if (!(objslot = findLocalObjectSlot()))
error("loadFlObject: Local Object Table overflow");
od = &_objs[objslot];
// Dump object script
if (_dumpScripts) {
char buf[32];
const byte *ptr = foir.obcd;
sprintf(buf, "roomobj-%d-", room);
ptr = findResource(MKID('VERB'), ptr);
dumpResource(buf, object, ptr);
}
// Setup sizes
obcd_size = READ_BE_UINT32(foir.obcd + 4);
od->OBCDoffset = 8;
od->OBIMoffset = obcd_size + 8;
obim_size = READ_BE_UINT32(foir.obim + 4);
flob_size = obcd_size + obim_size + 8;
// Lock room/roomScripts for the given room. They contains the OBCD/OBIM
// data, and a call to createResource might expire them, hence we lock them.
isRoomLocked = ((res.flags[rtRoom][room] & RF_LOCK) != 0);
isRoomScriptsLocked = ((res.flags[rtRoomScripts][room] & RF_LOCK) != 0);
if (!isRoomLocked)
lock(rtRoom, room);
if (_version == 8 && !isRoomScriptsLocked)
lock(rtRoomScripts, room);
// Allocate slot & memory for floating object
slot = findFlObjectSlot();
flob = createResource(rtFlObject, slot, flob_size);
assert(flob);
// Copy object code + object image to floating object
((uint32 *)flob)[0] = MKID('FLOB');
((uint32 *)flob)[1] = TO_BE_32(flob_size);
memcpy(flob + 8, foir.obcd, obcd_size);
memcpy(flob + 8 + obcd_size, foir.obim, obim_size);
// Unlock room/roomScripts
if (!isRoomLocked)
unlock(rtRoom, room);
if (_version == 8 && !isRoomScriptsLocked)
unlock(rtRoomScripts, room);
// Setup local object flags
setupRoomObject(od, flob, flob);
od->fl_object_index = slot;
}
} // End of namespace Scumm
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