diff options
Diffstat (limited to 'engines/sci/engine/script.cpp')
-rw-r--r-- | engines/sci/engine/script.cpp | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/engines/sci/engine/script.cpp b/engines/sci/engine/script.cpp index 897ceccad3..037f4ab700 100644 --- a/engines/sci/engine/script.cpp +++ b/engines/sci/engine/script.cpp @@ -385,7 +385,7 @@ void Script::setLockers(int lockers) { _lockers = lockers; } -uint16 Script::validateExportFunc(int pubfunct, bool relocate) { +uint32 Script::validateExportFunc(int pubfunct, bool relocSci3) { bool exportsAreWide = (g_sci->_features->detectLofsType() == SCI_VERSION_1_MIDDLE); if (_numExports <= pubfunct) { @@ -396,17 +396,17 @@ uint16 Script::validateExportFunc(int pubfunct, bool relocate) { if (exportsAreWide) pubfunct *= 2; - uint16 offset; + uint32 offset; - if (getSciVersion() != SCI_VERSION_3 || !relocate) { + if (getSciVersion() != SCI_VERSION_3) { offset = READ_SCI11ENDIAN_UINT16(_exportTable + pubfunct); } else { - offset = relocateOffsetSci3(pubfunct * 2 + 22); + if (!relocSci3) + offset = READ_SCI11ENDIAN_UINT16(_exportTable + pubfunct) + getCodeBlockOffsetSci3(); + else + offset = relocateOffsetSci3(pubfunct * 2 + 22); } - if (offset >= _bufSize) - error("Invalid export function pointer"); - // Check if the offset found points to a second export table (e.g. script 912 // in Camelot and script 306 in KQ4). Such offsets are usually small (i.e. < 10), // thus easily distinguished from actual code offsets. @@ -419,11 +419,16 @@ uint16 Script::validateExportFunc(int pubfunct, bool relocate) { if (secondExportTable) { secondExportTable += 3; // skip header plus 2 bytes (secondExportTable is a uint16 pointer) offset = READ_SCI11ENDIAN_UINT16(secondExportTable + pubfunct); - if (offset >= _bufSize) - error("Invalid export function pointer"); } } + // Note that it's perfectly normal to return a zero offset, especially in + // SCI1.1 and newer games. Examples include script 64036 in Torin's Passage, + // script 64908 in the demo of RAMA and script 1013 in KQ6 floppy. + + if (offset >= _bufSize) + error("Invalid export function pointer"); + return offset; } @@ -551,7 +556,7 @@ void Script::initializeClasses(SegManager *segMan) { if (getSciVersion() <= SCI_VERSION_1_LATE && !marker) break; - if (getSciVersion() >= SCI_VERSION_1_1 && marker != 0x1234) + if (getSciVersion() >= SCI_VERSION_1_1 && marker != SCRIPT_OBJECT_MAGIC_NUMBER) break; if (getSciVersion() <= SCI_VERSION_1_LATE) { |