diff options
Diffstat (limited to 'engines/sci')
| -rw-r--r-- | engines/sci/engine/script_patches.cpp | 86 |
1 files changed, 70 insertions, 16 deletions
diff --git a/engines/sci/engine/script_patches.cpp b/engines/sci/engine/script_patches.cpp index 4a829c2457..054fac7648 100644 --- a/engines/sci/engine/script_patches.cpp +++ b/engines/sci/engine/script_patches.cpp @@ -1092,35 +1092,89 @@ SciScriptPatcherEntry larry6Signatures[] = { }; // =========================================================================== -// rm560::doit was supposed to close the painting, when Heimlich enters the -// room. The code is buggy. It actually closes the painting, when heimlich -// is not in the room. We fix that. -// Applies to at least: English floppy +// Laura Bow 2 +// +// Moving away the painting in the room with the hidden safe is problematic +// for the CD version of the game. safePic::doVerb gets triggered by the mouse-click. +// This method sets local 0 as signal, which is only meant to get handled, when +// the player clicks again to move the painting back. This signal is processed by +// the room doit-script. +// That doit-script checks safePic::cel to be not equal 0 and would then skip over +// the "close painting" trigger code. On very fast computers this script may +// get called too early (which is the case when running under ScummVM and when +// running the game using Sierra SCI in DOS-Box with cycles 15000) and thinks +// that it's supposed to move the painting back. Which then results in the painting +// getting moved to its original position immediately (which means it won't be possible +// to access the safe behind it). +// +// We patch the script, so that we check for cel to be not equal 4 (the final cel) and +// we also reset the safePic-signal immediately as well. +// +// In the floppy version Laura's coordinates are checked directly in rm560::doit +// and as soon as she moves, the painting will automatically move to its original position. +// This is not the case for the CD version of the game. The painting will only "move" back, +// when the player actually exits the room and re-enters. + +// Applies to at least: English PC-CD // Responsible method: rm560::doit -const uint16 laurabow2SignaturePaintingClosing[] = { - 0x4a, 0x04, // send 04 - read aHeimlich::room +// Fixes bug: #6460 (actually only part of) +const uint16 laurabow2CDSignaturePaintingClosing[] = { + 0x39, 0x04, // pushi 04 (cel) + 0x76, // push0 SIG_MAGICDWORD, + 0x7a, // push2 + 0x38, SIG_UINT16 + 0x31, 0x02, // pushi 0231h (561) + 0x76, // push0 + 0x43, 0x02, 0x04, // kScriptID (get export 0 of script 561) + 0x4a, 0x04, // send 04 (gets safePicture::cel) + 0x18, // not + 0x31, 0x21, // bnt [exit] + 0x38, SIG_UINT16 + 0x83, 0x02, // pushi 0283h + 0x76, // push0 + 0x7a, // push2 + 0x39, 0x20, // pushi 20 + 0x76, // push0 + 0x43, 0x02, 0x04, // kScriptID (get export 0 of script 32) + 0x4a, 0x04, // send 04 (get sHeimlich::room) 0x36, // push - 0x81, 0x0b, // lag global[11d] -> current room + 0x81, 0x0b, // lag global[b] (current room) 0x1c, // ne? - 0x31, 0x0e, // bnt [don't close] + 0x31, 0x0e, // bnt [exit] 0x35, 0x00, // ldi 00 - 0xa3, 0x00, // sal local[0] - 0x38, SIG_UINT16 + 0x92, 0x00, // pushi 0092 - 0x78, // push1 - 0x72, // lofsa sDumpSafe + 0xa3, 0x00, // sal local[0] -> reset safePic signal SIG_END }; -const uint16 laurabow2PatchPaintingClosing[] = { - PATCH_ADDTOOFFSET +6, - 0x2f, 0x0e, // bt [don't close] +const uint16 laurabow2CDPatchPaintingClosing[] = { + PATCH_ADDTOOFFSET +2, + 0x3c, // dup (1 additional byte) + 0x76, // push0 + 0x3c, // dup (1 additional byte) + 0xab, 0x00, // ssl local[0] -> reset safePic signal + 0x7a, // push2 + 0x38, PATCH_UINT16 + 0x31, 0x02, // pushi 0231h (561) + 0x76, // push0 + 0x43, 0x02, 0x04, // kScriptID (get export 0 of script 561) + 0x4a, 0x04, // send 04 (gets safePicture::cel) + 0x1a, // eq? + 0x31, 0x1d, // bnt [exit] + 0x38, PATCH_UINT16 + 0x83, 0x02, // pushi 0283h + 0x76, // push0 + 0x7a, // push2 + 0x39, 0x20, // pushi 20 + 0x76, // push0 + 0x43, 0x02, 0x04, // kScriptID (get export 0 of script 32) + 0x4a, 0x04, // send 04 (get sHeimlich::room) + 0x36, // push + 0x81, 0x0b, // lag global[b] (current room) + 0x1a, // eq? (2 opcodes changed, to save 2 bytes) + 0x2f, 0x0a, // bt [exit] PATCH_END }; // script, description, signature patch SciScriptPatcherEntry laurabow2Signatures[] = { - { 560, "painting closing immediately", 1, 0, 0, laurabow2SignaturePaintingClosing, laurabow2PatchPaintingClosing }, + { 560, "CD: painting closing immediately", 1, 0, 0, laurabow2CDSignaturePaintingClosing, laurabow2CDPatchPaintingClosing }, SCI_SIGNATUREENTRY_TERMINATOR }; |