diff options
| -rw-r--r-- | engines/sci/engine/script_patches.cpp | 113 |
1 files changed, 108 insertions, 5 deletions
diff --git a/engines/sci/engine/script_patches.cpp b/engines/sci/engine/script_patches.cpp index e6eed0b4b7..d45c689985 100644 --- a/engines/sci/engine/script_patches.cpp +++ b/engines/sci/engine/script_patches.cpp @@ -746,12 +746,115 @@ static const uint16 gk1PatchInterrogationBug[] = { PATCH_END }; -// script, description, signature patch +// On day 10 nearly at the end of the game, Gabriel Knight dresses up and right after that +// someone will be at the door. Gabriel turns around to see what's going on. +// +// In ScummVM Gabriel turning around plays endlessly. This is caused by the loop of Gabriel +// being kept at 1, but view + cel were changed accordingly. The view used - which is view 859 - +// does not have a loop 1. kNumCels is called on that, BUT kNumCels in SSCI is broken in that +// regard. It checks for loop > count and not loop >= count and will return basically random data +// in case loop == count. +// +// In SSCI this simply worked by accident. kNumCels returned 0x53 in this case, but later script code +// fixed that up somehow, so it worked out in the end. +// +// The setup for this is done in SDJEnters::changeState(0). The cycler will never reach the goal +// because the goal will be cel -1, so it loops endlessly. +// +// We fix this by adding a setLoop(0). +// +// Applies to at least: English PC-CD, German PC-CD +// Responsible method: sDJEnters::changeState +static const uint16 gk1SignatureDay10GabrielDressUp[] = { + 0x87, 0x01, // lap param[1] + 0x65, 0x14, // aTop state + 0x36, // push + 0x3c, // dup + 0x35, 0x00, // ldi 0 + 0x1a, // eq? + 0x30, SIG_UINT16(0x006f), // bnt [next state 1] + SIG_ADDTOOFFSET(+84), + 0x39, 0x0e, // pushi 0Eh (view) + 0x78, // push1 + SIG_MAGICDWORD, + 0x38, SIG_UINT16(0x035B), // pushi 035Bh (859d) + 0x38, SIG_UINT16(0x0141), // pushi 0141h (setCel) + 0x78, // push1 + 0x76, // push0 + 0x38, SIG_UINT16(0x00E9), // pushi 00E9h (setCycle) + 0x7a, // push2 + 0x51, 0x18, // class End + 0x36, // push + 0x7c, // pushSelf + 0x81, 0x00, // lag global[0] + 0x4a, 0x14, 0x00, // send 14h + // GKEgo::view(859) + // GKEgo::setCel(0) + // GKEgo::setCycle(End, sDJEnters) + 0x32, SIG_UINT16(0x0233), // jmp [ret] + // next state + 0x3c, // dup + 0x35, 0x01, // ldi 01 + 0x1a, // eq? + 0x31, 0x07, // bnt [next state 2] + 0x35, 0x02, // ldi 02 + 0x65, 0x1a, // aTop cycles + 0x32, SIG_UINT16(0x0226), // jmp [ret] + // next state + 0x3c, // dup + 0x35, 0x02, // ldi 02 + 0x1a, // eq? + 0x31, 0x2a, // bnt [next state 3] + 0x78, // push1 + SIG_ADDTOOFFSET(+34), + // part of state 2 code, delays for 1 cycle + 0x35, 0x01, // ldi 1 + 0x65, 0x1a, // aTop cycles + SIG_END +}; + +static const uint16 gk1PatchDay10GabrielDressUp[] = { + PATCH_ADDTOOFFSET(+9), + 0x30, SIG_UINT16(0x0073), // bnt [next state 1] - offset adjusted + SIG_ADDTOOFFSET(+84 + 11), + // added by us: setting loop to 0 (5 bytes needed) + 0x38, SIG_UINT16(0x00FB), // pushi 00FBh (setLoop) + 0x78, // push1 + 0x76, // push0 + // original code, but offset changed + 0x38, SIG_UINT16(0x00E9), // pushi 00E9h (setCycle) + 0x7a, // push2 + 0x51, 0x18, // class End + 0x36, // push + 0x7c, // pushSelf + 0x81, 0x00, // lag global[0] + 0x4a, 0x1a, 0x00, // send 1Ah - adjusted + // GKEgo::view(859) + // GKEgo::setCel(0) + // GKEgo::setLoop(0) <-- new, by us + // GKEgo::setCycle(End, sDJEnters) + // end of original code + 0x3a, // toss + 0x48, // ret (saves 1 byte) + // state 1 code + 0x3c, // dup + 0x34, SIG_UINT16(0x0001), // ldi 0001 (waste 1 byte) + 0x1a, // eq? + 0x31, 2, // bnt [next state 2] + 0x33, 41, // jmp to state 2 delay code + SIG_ADDTOOFFSET(+41), + // wait 2 cycles instead of only 1 + 0x35, 0x02, // ldi 2 + PATCH_END +}; + +// script, description, signature patch static const SciScriptPatcherEntry gk1Signatures[] = { - { true, 51, "interrogation bug", 1, gk1SignatureInterrogationBug, gk1PatchInterrogationBug }, - { true, 212, "day 5 phone freeze", 1, gk1SignatureDay5PhoneFreeze, gk1PatchDay5PhoneFreeze }, - { true, 230, "day 6 police beignet timer issue", 1, gk1SignatureDay6PoliceBeignet, gk1PatchDay6PoliceBeignet }, - { true, 230, "day 6 police sleep timer issue", 1, gk1SignatureDay6PoliceSleep, gk1PatchDay6PoliceSleep }, + { true, 51, "interrogation bug", 1, gk1SignatureInterrogationBug, gk1PatchInterrogationBug }, + { true, 212, "day 5 phone freeze", 1, gk1SignatureDay5PhoneFreeze, gk1PatchDay5PhoneFreeze }, + { true, 230, "day 6 police beignet timer issue", 1, gk1SignatureDay6PoliceBeignet, gk1PatchDay6PoliceBeignet }, + { true, 230, "day 6 police sleep timer issue", 1, gk1SignatureDay6PoliceSleep, gk1PatchDay6PoliceSleep }, + { true, 808, "day 10 gabriel dress up infinite turning", 1, gk1SignatureDay10GabrielDressUp, gk1PatchDay10GabrielDressUp }, SCI_SIGNATUREENTRY_TERMINATOR }; |