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fix for bug #771803

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svn-id: r9043
This commit is contained in:
Max Horn 2003-07-15 19:20:40 +00:00
parent 253e50b3e1
commit f60e8ff53e
1 changed files with 9 additions and 3 deletions
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12
scumm/boxes.cpp
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@ -238,9 +238,15 @@ Box *Scumm::getBoxBaseAddr(int box) {
// this also seems to be incorrect for atari st demo of zak
// and assumingly other v2 games
// The same happens in Indy3EGA (see bug #770351)
if (_gameId == GID_MONKEY_EGA || _gameId == GID_INDY3) {
if (box < 0 || box > ptr[0] - 1)
warning("Illegal box %d", box);
// Also happend in ZakEGA (see bug #771803).
//
// This *might* mean that we have a bug in our box implementation
// OTOH, the original engine, unlike ScummVM, performed no bound
// checking at all. All the problems so far have been cases where
// the value was exactly one more than what we consider the maximum.
// So it's very well possible that all of these are script errors.
if (_gameId == GID_MONKEY_EGA || _gameId == GID_INDY3 || _gameId == GID_ZAK) {
checkRange(ptr[0], 0, box, "Illegal box %d");
} else
checkRange(ptr[0] - 1, 0, box, "Illegal box %d");