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scummvm/scumm/object.cpp
Max Horn 86df3537b9 replaced GF_AFTER with _version 
svn-id: r8372
2003-06-07 00:13:26 +00:00

1669 lines
41 KiB
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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2003 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.h"
#include "actor.h"
#include "bomp.h"
#include "object.h"
#include "resource.h"
#include "usage_bits.h"
#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 Scumm::getClass(int obj, int cls)
{
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 Scumm::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;
}
}
// FIXME: It isn't enough for the Indy3 intro to make the
// little trains ignore boxes, they have to always clip as
// well. Is this yet another walkbox 0 error?
if (_gameId == GID_INDY3_256 && cls == kObjectClassIgnoreBoxes && _currentRoom == 76)
putClass(obj, kObjectClassAlwaysClip, set);
if (set)
_classData[obj] |= (1 << (cls - 1));
else
_classData[obj] &= ~(1 << (cls - 1));
if (1 <= obj && obj < _numActors) {
_actors[obj].classChanged(cls, set);
}
}
int Scumm::getOwner(int obj) {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in getOwner");
return _objectOwnerTable[obj];
}
void Scumm::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 Scumm::getState(int obj) {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in getState");
return _objectStateTable[obj];
}
void Scumm::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 Scumm::getObjectRoom(int obj) {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in getObjectRoom");
return _objectRoomTable[obj];
}
int Scumm::getObjectIndex(int object) {
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 Scumm::whereIsObject(int object) {
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 < _maxInventoryItems; 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 Scumm::getObjectOrActorXY(int object, int &x, int &y) {
if (object < _numActors) {
Actor *act = derefActorSafe(object, "getObjectOrActorXY");
if (!act)
return 0;
else
return act->getActorXYPos(x, y);
}
switch (whereIsObject(object)) {
case WIO_NOT_FOUND:
return -1;
case WIO_INVENTORY:
if (_objectOwnerTable[object] < _numActors)
return derefActorSafe(_objectOwnerTable[object], "getObjectOrActorXY(2)")->getActorXYPos(x, y);
else
return 0xFF;
}
getObjectXYPos(object, x, y);
return 0;
}
/**
* Return the position of an object.
* Returns X, Y and direction in angles
*/
void Scumm::getObjectXYPos(int object, int &x, int &y, int &dir) {
ObjectData *od = &_objs[getObjectIndex(object)];
int state;
const byte *ptr;
const ImageHeader *imhd;
if (_version >= 6) {
state = getState(object) - 1;
if (state < 0)
state = 0;
if (od->fl_object_index) {
ptr = getResourceAddress(rtFlObject, od->fl_object_index);
ptr = findResource(MKID('OBIM'), ptr);
} else {
ptr = getResourceAddress(rtRoom, _roomResource);
ptr += od->OBIMoffset;
}
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);
if (_version == 8) {
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);
} 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);
}
int Scumm::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;
if (acta) {
AdjustBoxResult r = acta->adjustXYToBeInBox(x2, y2);
x2 = r.x;
y2 = r.y;
}
y = abs(y - y2);
x = abs(x - x2);
if (y > x)
x = y;
return (_version <= 2) ? x / 8 : x;
}
int Scumm::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 Scumm::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) {
drawObject(i, arg);
break;
}
od = &_objs[od->parent];
} while ((od->state & mask) == a);
}
void Scumm::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 Scumm::drawObject(int obj, int arg) {
ObjectData *od;
int xpos, ypos, height, width;
const byte *ptr;
int x, a, numstrip;
int tmp;
if (_BgNeedsRedraw)
arg = 0;
od = &_objs[obj];
if (od->obj_nr == 0)
return;
checkRange(_numGlobalObjects - 1, 0, od->obj_nr, "Object %d out of range in drawObject");
xpos = od->x_pos >> 3;
ypos = od->y_pos;
width = od->width >> 3;
height = od->height &= 0xFFFFFFF8; // Mask out last 3 bits
if (width == 0 || xpos > _screenEndStrip || xpos + width < _screenStartStrip)
return;
if (od->fl_object_index) {
ptr = getResourceAddress(rtFlObject, od->fl_object_index);
ptr = findResource(MKID('OBIM'), ptr);
} else {
ptr = getResourceAddress(rtRoom, _roomResource);
ptr = ptr + od->OBIMoffset;
}
if (_features & GF_OLD_BUNDLE)
ptr += 0;
else if (_features & GF_SMALL_HEADER)
ptr += 8;
else if (_version == 8) {
ptr = findResource(MKID('IMAG'), ptr);
if (!ptr)
return;
ptr = findResource(MKID('WRAP'), ptr);
assert(ptr);
ptr = findResource(MKID('OFFS'), ptr);
assert(ptr);
// Get the address of the specified SMAP (corresponding to IMxx)
ptr += READ_LE_UINT32(ptr + 4 + 4*getState(od->obj_nr));
} else
ptr = findResource(IMxx_tags[getState(od->obj_nr)], ptr);
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 = Gdi::dbAllowMaskOr;
if (_version == 1) {
gdi._C64ObjectMode = true;
gdi.decodeC64Gfx(ptr, gdi._C64ObjectMap, width * (height >> 3) * 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;
gdi.drawBitmap(ptr, &virtscr[0], x, ypos, width << 3, height, x - xpos, numstrip, flags);
}
}
void Scumm::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 Scumm::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 = READ_LE_UINT16(&(roomhdr->v7.numObjects));
else
_numObjectsInRoom = 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
for (i = 0; i < _numObjectsInRoom; i++) {
od = &_objs[findLocalObjectSlot()];
ptr = findResource(MKID('OBCD'), searchptr);
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, 0);
dumpResource(buf, od->obj_nr, ptr);
}
searchptr = NULL;
}
searchptr = room;
for (i = 0; i < _numObjectsInRoom; i++) {
ptr = findResource(MKID('OBIM'), searchptr);
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;
}
searchptr = NULL;
}
for (i = 1; i < _numLocalObjects; i++) {
if (_objs[i].obj_nr && !_objs[i].fl_object_index)
setupRoomObject(&_objs[i], room);
}
CHECK_HEAP
}
void Scumm::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 Scumm::loadRoomObjectsSmall() {
int i, j;
ObjectData *od;
const byte *ptr;
uint16 obim_id;
const byte *room, *searchptr;
const RoomHeader *roomhdr;
CHECK_HEAP
room = getResourceAddress(rtRoom, _roomResource);
roomhdr = (const RoomHeader *)findResourceData(MKID('RMHD'), room);
_numObjectsInRoom = READ_LE_UINT16(&(roomhdr->old.numObjects));
if (_numObjectsInRoom == 0)
return;
if (_numObjectsInRoom > _numLocalObjects)
error("More than %d objects in room %d", _numLocalObjects, _roomResource);
searchptr = room;
for (i = 0; i < _numObjectsInRoom; i++) {
od = &_objs[findLocalObjectSlot()];
ptr = findResourceSmall(MKID('OBCD'), searchptr);
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);
}
searchptr = NULL;
}
searchptr = room;
for (i = 0; i < _numObjectsInRoom; i++) {
ptr = findResourceSmall(MKID('OBIM'), searchptr);
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;
}
searchptr = NULL;
}
for (i = 1; i < _numLocalObjects; i++) {
if (_objs[i].obj_nr && !_objs[i].fl_object_index) {
setupRoomObject(&_objs[i], room);
}
}
CHECK_HEAP
}
void Scumm::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) << 3;
od->y_pos = ((*(ptr + 10)) & 0x7F) << 3;
od->parentstate = (*(ptr + 10) & 0x80) ? 1 : 0;
if (_version <= 2)
od->parentstate <<= 3;
od->width = *(ptr + 11) << 3;
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 = 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 << 3;
od->height = cdhd->v5.h << 3;
od->x_pos = cdhd->v5.x << 3;
od->y_pos = cdhd->v5.y << 3;
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 Scumm::fixObjectFlags() {
int i;
ObjectData *od = &_objs[1];
for (i = 1; i < _numLocalObjects; i++, od++) {
if (od->obj_nr > 0)
od->state = _objectStateTable[od->obj_nr];
}
}
void Scumm::processDrawQue() {
int i, j;
for (i = 0; i < _drawObjectQueNr; i++) {
j = _drawObjectQue[i];
if (j)
drawObject(j, 0);
}
_drawObjectQueNr = 0;
}
void Scumm::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 = 1; i < _maxInventoryItems; i++) {
if (_inventory[i] == obj) {
j = whereIsObject(obj);
if (j == WIO_INVENTORY) {
nukeResource(rtInventory, i);
_inventory[i] = 0;
}
a = &_inventory[1];
for (i = 1; i < _maxInventoryItems - 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;
}
}
}
void Scumm::removeObjectFromRoom(int obj) {
int i, j, strip;
for (i = 1; i < _numLocalObjects; i++) {
if (_objs[i].obj_nr == (uint16)obj) {
if (_objs[i].width != 0) {
for (j = 0; j < _objs[i].width >> 3; j++) {
strip = (_objs[i].x_pos >> 3) + j;
// Clip value
if (strip < _screenStartStrip)
continue;
if (strip > _screenEndStrip)
break;
setGfxUsageBit(strip, USAGE_BIT_DIRTY);
}
}
_BgNeedsRedraw = true;
return;
}
}
}
void Scumm::addObjectToDrawQue(int object) {
_drawObjectQue[_drawObjectQueNr++] = object;
if ((unsigned int)_drawObjectQueNr > ARRAYSIZE(_drawObjectQue))
error("Draw Object Que overflow");
}
void Scumm::clearDrawObjectQueue() {
_drawObjectQueNr = 0;
}
const byte *Scumm::getObjOrActorName(int obj) {
byte *objptr;
int i;
if (obj < _numActors)
return derefActor(obj, "getObjOrActorName")->getActorName();
if (_version >= 6) {
for (i = 0; i < _numNewNames; i++) {
if (_newNames[i] == obj) {
debug(5, "Found new name for object %d at _newNames[i]", obj, i);
return getResourceAddress(rtObjectName, i);
break;
}
}
}
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 = READ_LE_UINT16(objptr + 18);
return (objptr + offset);
}
return findResourceData(MKID('OBNA'), objptr);
}
uint32 Scumm::getOBCDOffs(int object) {
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 *Scumm::getOBCDFromObject(int obj) {
int i;
if (_objectOwnerTable[obj] != OF_OWNER_ROOM) {
for (i = 0; i < _maxInventoryItems; 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)
return getResourceAddress(rtFlObject, _objs[i].fl_object_index) + 8;
if (_version == 8)
return getResourceAddress(rtRoomScripts, _roomResource) + _objs[i].OBCDoffset;
else
return getResourceAddress(rtRoom, _roomResource) + _objs[i].OBCDoffset;
}
}
}
return 0;
}
void Scumm::addObjectToInventory(uint obj, uint room) {
int i, 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) {
i = getObjectIndex(obj);
ptr = getResourceAddress(rtFlObject, _objs[i].fl_object_index) + 8;
size = READ_BE_UINT32_UNALIGNED(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_UNALIGNED(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 Scumm::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((const byte *)obcdptr > (byte *)256);
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);
for (i = 0;;) {
if (_features & GF_SMALL_HEADER)
obcdptr = findResourceSmall(MKID('OBCD'), searchptr);
else
obcdptr = findResource(MKID('OBCD'), searchptr);
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);
searchptr = NULL;
}
}
roomptr = fo->roomptr;
if (findWhat & foImageHeader) {
searchptr = roomptr;
assert(searchptr);
for (i = 0;;) {
if (_features & GF_SMALL_HEADER)
obimptr = findResourceSmall(MKID('OBIM'), searchptr);
else
obimptr = findResource(MKID('OBIM'), searchptr);
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);
searchptr = NULL;
}
}
}
int Scumm::getInventorySlot() {
int i;
for (i = 1; i <= _maxInventoryItems; i++) {
if (_inventory[i] == 0)
return i;
}
error("Inventory full, %d max items", _maxInventoryItems);
return -1;
}
void Scumm::SamInventoryHack(int obj) {
// FIXME: Sam and Max hack
int base = 6;
while (base < 80) {
int value = readArray(178, 0, base);
if (value == obj)
return;
if (value == 0) {
_scummVars[179]++;
writeArray(178, 0, base, obj);
return;
}
base++;
}
}
void Scumm::setOwnerOf(int obj, int owner) {
ScriptSlot *ss;
if (owner == 0) {
clearOwnerOf(obj);
ss = &vm.slot[_currentScript];
if (ss->where == WIO_INVENTORY && _inventory[ss->number] == obj) {
putOwner(obj, 0);
runHook(0);
stopObjectCode();
return;
}
}
if ((owner == 2) && (_gameId == GID_SAMNMAX))
SamInventoryHack(obj);
putOwner(obj, owner);
runHook(0);
}
int Scumm::getObjX(int obj) {
if (obj < _numActors) {
if (obj < 1)
return 0; /* fix for indy4's map */
return derefActor(obj, "getObjX")->x;
} else {
if (whereIsObject(obj) == WIO_NOT_FOUND)
return -1;
int x, y;
getObjectOrActorXY(obj, x, y);
return x;
}
}
int Scumm::getObjY(int obj) {
if (obj < _numActors) {
if (obj < 1)
return 0; /* fix for indy4's map */
return derefActor(obj, "getObjY")->y;
} else {
if (whereIsObject(obj) == WIO_NOT_FOUND)
return -1;
int x, y;
getObjectOrActorXY(obj, x, y);
return y;
}
}
int Scumm::getObjOldDir(int obj) {
return newDirToOldDir(getObjNewDir(obj));
}
int Scumm::getObjNewDir(int obj) {
int dir;
if (obj < _numActors) {
dir = derefActor(obj, "getObjNewDir")->facing;
} else {
int x, y;
getObjectXYPos(obj, x, y, dir);
}
return dir;
}
int Scumm::findInventory(int owner, int idx) {
int count = 1, i, obj;
for (i = 0; i != _maxInventoryItems; i++) {
obj = _inventory[i];
if (obj && getOwner(obj) == owner && count++ == idx)
return obj;
}
return 0;
}
int Scumm::getInventoryCount(int owner) {
int i, obj;
int count = 0;
for (i = 0; i != _maxInventoryItems; i++) {
obj = _inventory[i];
if (obj && getOwner(obj) == owner)
count++;
}
return count;
}
void Scumm::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 << 3;
_objs[i].y_pos = y << 3;
}
addObjectToDrawQue(i);
putState(obj, state);
}
static int getDist(int x, int y, int x2, int y2) {
int a = abs(y - y2);
int b = abs(x - x2);
if (a > b)
return a;
return b;
}
int Scumm::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) >> 1);
}
void Scumm::setCursorImg(uint img, uint room, uint imgindex) {
int w, h;
const byte *dataptr, *bomp;
uint32 size;
FindObjectInRoom foir;
if (room == (uint) - 1)
room = getObjectRoom(img);
findObjectInRoom(&foir, foCodeHeader | foImageHeader | foCheckAlreadyLoaded, img, room);
if (_version == 8) {
setCursorHotspot(READ_LE_UINT32(&foir.imhd->v8.hotspot[0].x),
READ_LE_UINT32(&foir.imhd->v8.hotspot[0].y));
w = READ_LE_UINT32(&foir.imhd->v8.width) >> 3;
h = READ_LE_UINT32(&foir.imhd->v8.height) >> 3;
} else if (_version == 7) {
setCursorHotspot(READ_LE_UINT16(&foir.imhd->v7.hotspot[0].x),
READ_LE_UINT16(&foir.imhd->v7.hotspot[0].y));
w = READ_LE_UINT16(&foir.imhd->v7.width) >> 3;
h = READ_LE_UINT16(&foir.imhd->v7.height) >> 3;
} else {
setCursorHotspot(READ_LE_UINT16(&foir.imhd->old.hotspot[0].x),
READ_LE_UINT16(&foir.imhd->old.hotspot[0].y));
w = READ_LE_UINT16(&foir.cdhd->v6.w) >> 3;
h = READ_LE_UINT16(&foir.cdhd->v6.h) >> 3;
}
// TODO - for V8 don't use IMxx_tags. Rather, we do something similiar to the V8
// code in drawBlastObject. It would be *much* nicer if we could aggregate this
// common code into some helper functions, instead of having long convuluted
// cases scattered all over the place.
if (_version == 8) {
dataptr = findResource(MKID('IMAG'), foir.obim);
assert(dataptr);
dataptr = findResource(MKID('WRAP'), dataptr);
assert(dataptr);
dataptr = findResource(MKID('OFFS'), dataptr);
assert(dataptr);
dataptr += READ_LE_UINT32(dataptr + 4 + 4*imgindex);
// TODO - distinguish between SMAP and BOMP here?
// HACK - adjust dataptr here until bomp code gets adjusted for V8
bomp = dataptr;
} else {
dataptr = findResource(IMxx_tags[imgindex], foir.obim);
if (dataptr == NULL)
error("setCursorImg: No such image");
size = READ_BE_UINT32_UNALIGNED(dataptr + 4);
if (size > sizeof(_grabbedCursor))
error("setCursorImg: Cursor image too large");
bomp = findResource(MKID('BOMP'), dataptr);
}
if (bomp != NULL)
useBompCursor(bomp, w, h);
else
useIm01Cursor(dataptr, w, h);
}
void Scumm::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 Scumm::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);
eo = &_blastObjectQueue[_blastObjectQueuePos++];
eo->number = objectNumber;
eo->posX = objectX + (camera._cur.x & 7);
eo->posY = objectY + (camera._cur.y - (_screenHeight / 2));
if (objectWidth == 0) {
od = &_objs[idx];
eo->width = od->width;
} else {
eo->width = objectWidth;
}
if (objectHeight == 0) {
od = &_objs[idx];
eo->height = od->height;
} else {
eo->height = objectHeight;
}
eo->scaleX = scaleX;
eo->scaleY = scaleY;
eo->image = image;
eo->mode = mode;
}
void Scumm::drawBlastObjects() {
BlastObject *eo;
int i;
eo = _blastObjectQueue;
for (i = 0; i < _blastObjectQueuePos; i++, eo++) {
drawBlastObject(eo);
}
}
void Scumm::drawBlastObject(BlastObject *eo) {
VirtScreen *vs;
const byte *bomp, *ptr;
int idx, 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);
idx = _objs[objnum].fl_object_index;
if (idx) {
ptr = getResourceAddress(rtFlObject, idx);
ptr = findResource(MKID('OBIM'), ptr);
} else {
idx = objnum;
ptr = getResourceAddress(rtRoom, _roomResource) + _objs[objnum].OBIMoffset;
}
if (!ptr)
error("BlastObject object %d (%d) image not found", eo->number, idx);
if (_version == 8) {
// The OBIM contains an IMAG, which in turn contains a WRAP, which contains
// an OFFS chunk and multiple BOMP chunks. To find the right BOMP, we can
// either use the offsets in the OFFS chunk, or iterate over all BOMPs we find.
// Here we use the first method.
ptr = findResource(MKID('IMAG'), ptr);
assert(ptr);
ptr = findResource(MKID('WRAP'), ptr);
assert(ptr);
ptr = findResource(MKID('OFFS'), ptr);
assert(ptr);
// Get the address of the specified BOMP (we really should verify it's a BOMP and not a SMAP
bomp = ptr + READ_LE_UINT32(ptr + 4 + 4*eo->image) + 8;
} else {
const byte *img = findResource(IMxx_tags[eo->image], ptr);
if (!img)
img = findResource(IMxx_tags[1], ptr); // Backward compatibility with samnmax blast objects
if (!img)
error("blast-object %d invalid image %d (1-x)", eo->number, eo->image);
bomp = findResourceData(MKID('BOMP'), img);
}
if (!bomp)
error("object %d is not a blast object", eo->number);
//hexdump(bomp,32);
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->screenPtr + vs->xstart;
bdd.outwidth = vs->width;
bdd.outheight = vs->height;
if (_version == 8) {
bdd.dataptr = bomp + 8; // Why this? See also useBompCursor
} else {
bdd.dataptr = bomp + 10; // Why this? See also useBompCursor
}
bdd.x = eo->posX;
bdd.y = eo->posY;
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);
}
updateDirtyRect(vs->number, bdd.x, bdd.x + bdd.srcwidth, bdd.y, bdd.y + bdd.srcheight, 0);
}
void Scumm::removeBlastObjects() {
BlastObject *eo;
int i;
eo = _blastObjectQueue;
for (i = 0; i < _blastObjectQueuePos; i++, eo++) {
removeBlastObject(eo);
}
clearEnqueue();
}
void Scumm::removeBlastObject(BlastObject *eo) {
VirtScreen *vs = &virtscr[0];
int top, bottom, left, right;
int left_strip, right_strip;
int i;
top = eo->posY;
bottom = eo->posY + eo->height;
left = eo->posX;
right = eo->posX + eo->width;
if (bottom < 0 || right < 0 || top > vs->height || left > vs->width)
return;
if (top < 0)
top = 0;
if (bottom > vs->height)
bottom = vs->height;
if (left < 0)
left = 0;
if (right > vs->width)
right = vs->width;
left_strip = left >> 3;
right_strip = (right - 1) >> 3;
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(top, bottom, i);
updateDirtyRect(0, left, right, top, bottom, USAGE_BIT_RESTORED);
}
int Scumm::findLocalObjectSlot() {
int i;
for (i = 1; i < _numLocalObjects; i++) {
if (!_objs[i].obj_nr)
return i;
}
return -1;
}
int Scumm::findFlObjectSlot() {
int i;
for (i = 1; i < _maxFLObject; i++) {
if (_baseFLObject[i] == NULL)
return i;
}
error("findFlObjectSlot: Out of FLObject slots");
return -1;
}
void Scumm::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, 0);
dumpResource(buf, object, ptr);
}
// Setup sizes
obcd_size = READ_BE_UINT32_UNALIGNED(foir.obcd + 4);
od->OBCDoffset = 8;
od->OBIMoffset = obcd_size + 8;
obim_size = READ_BE_UINT32_UNALIGNED(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;
}
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