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 = (_game.version >= 6) ? obj : 0;
// WORKAROUND for bug #1917981: Game crash when finishing Indy3 demo.
// Script 94 tries to empty the inventory but does so in a bogus way.
// This causes it to try to remove object 0 from the inventory.
if (_game.id == GID_PASS && obj == 0 && vm.slot[_currentScript].number == 94)
return;
assert(obj > 0);
if (owner == 0) {
clearOwnerOf(obj);
// FIXME: See bug #1535358 and many others. Essentially, the following
// code, while matching disasm of various versions of the SCUMM engine,
// is total bullocks, and leads to odd crashes due to out-of-bounds
// array (read) access. Three "famous" crashes were caused by this:
// Monkey Island 1: Using meat with flower
// FOA: Using ribcage with another item
// DOTT: Using stamp with contract
//
// The bad code:
// if (ss->where == WIO_INVENTORY && _inventory[ss->number] == obj) {
// That check makes no sense at all: _inventory only contains 80 items,
// which are in the order the player picked up items. We can only
// guess that the SCUMM coders meant to write
// if (ss->where == WIO_INVENTORY && ss->number == obj) {
// which would ensure that an object script that nukes itself gets
// stopped. Alas, we can't just make that change, since it could
// lead to new regressions.
// Another fix would be to completely remove this check, which should
// not cause much problems, since it'll only succeed by pure chance.
//
// For now we follow a more defensive route: We perform the check
// if ss->number is small enough.
ss = &vm.slot[_currentScript];
if (ss->where == WIO_INVENTORY) {
if (ss->number < _numInventory && _inventory[ss->number] == obj) {
error("Odd setOwnerOf case #1: Please report to Fingolfin where you encountered this");
putOwner(obj, 0);
runInventoryScript(arg);
stopObjectCode();
return;
}
if (ss->number == obj)
error("Odd setOwnerOf case #2: Please report to Fingolfin where you encountered this");
}
}
putOwner(obj, owner);
runInventoryScript(arg);
}
void ScummEngine::setCameraFollows(Actor *a, bool setCamera) {
int t, i;
camera._mode = kFollowActorCameraMode;
camera._follows = a->_number;
if (!a->isInCurrentRoom()) {
startScene(a->getRoom(), 0, 0);
camera._mode = kFollowActorCameraMode;
camera._cur.x = a->_pos.x;
setCameraAt(camera._cur.x, 0);
}
t = a->_pos.x / 8 - _screenStartStrip;
if (t < camera._leftTrigger || t > camera._rightTrigger || setCamera == true)
setCameraAt(a->_pos.x, 0);
for (i = 1; i < _numActors; i++) {
if (_actors[i].isInCurrentRoom())
_actors[i]._needRedraw = true;
}
runInventoryScript(0);
}
void ScummEngine::actorFollowCamera(int act) {
if (!(_game.features & GF_NEW_CAMERA)) {
int old;
old = camera._follows;
setCameraFollows(derefActor(act, "actorFollowCamera"));
if (camera._follows != old)
runInventoryScript(0);
camera._movingToActor = false;
}
}
void ScummEngine_v0::o_pickupObject() {
int obj = fetchScriptByte();
if (!obj)
obj = _cmdObject;
/* Don't take an object twice */
if (whereIsObject(obj) == WIO_INVENTORY)
return;
addObjectToInventory(obj, _roomResource);
markObjectRectAsDirty(obj);
putOwner(obj, VAR(VAR_EGO));
putState(obj, getState(obj) | kObjectState_08 | kObjectStateUntouchable);
clearDrawObjectQueue();
runInventoryScript(1);
}
void ScummEngine_v70he::o70_pickupObject() {
int obj, room;
room = pop();
obj = pop();
if (room == 0)
room = getObjectRoom(obj);
addObjectToInventory(obj, room);
putOwner(obj, VAR(VAR_EGO));
if (_game.heversion <= 70) {
putClass(obj, kObjectClassUntouchable, 1);
putState(obj, 1);
markObjectRectAsDirty(obj);
clearDrawObjectQueue();
}
runInventoryScript(obj); /* Difference */
}
void ScummEngine_v4::o4_pickupObject() {
int obj = getVarOrDirectWord(PARAM_1);
if (obj < 1) {
error("pickupObjectOld received invalid index %d (script %d)", obj, vm.slot[_currentScript].number);
}
if (getObjectIndex(obj) == -1)
return;
if (whereIsObject(obj) == WIO_INVENTORY) // Don't take an object twice
return;
// debug(0, "adding %d from %d to inventoryOld", obj, _currentRoom);
addObjectToInventory(obj, _roomResource);
markObjectRectAsDirty(obj);
putOwner(obj, VAR(VAR_EGO));
putClass(obj, kObjectClassUntouchable, 1);
putState(obj, 1);
clearDrawObjectQueue();
runInventoryScript(1);
}
void ScummEngine_v7::setCameraFollows(Actor *a, bool setCamera) {
byte oldfollow = camera._follows;
int ax, ay;
camera._follows = a->_number;
VAR(VAR_CAMERA_FOLLOWED_ACTOR) = a->_number;
if (!a->isInCurrentRoom()) {
startScene(a->getRoom(), 0, 0);
}
ax = ABS(a->_pos.x - camera._cur.x);
ay = ABS(a->_pos.y - camera._cur.y);
if (ax > VAR(VAR_CAMERA_THRESHOLD_X) || ay > VAR(VAR_CAMERA_THRESHOLD_Y) || ax > (_screenWidth / 2) || ay > (_screenHeight / 2)) {
setCameraAt(a->_pos.x, a->_pos.y);
}
if (a->_number != oldfollow)
runInventoryScript(0);
}
