diff options
Diffstat (limited to 'engines/sci/engine/script_patches.cpp')
| -rw-r--r-- | engines/sci/engine/script_patches.cpp | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/engines/sci/engine/script_patches.cpp b/engines/sci/engine/script_patches.cpp index 60d3369fb6..1e1f389e73 100644 --- a/engines/sci/engine/script_patches.cpp +++ b/engines/sci/engine/script_patches.cpp @@ -25,6 +25,7 @@ #include "sci/sci.h" #include "sci/engine/script.h" +#include "sci/engine/state.h" #include "common/util.h" @@ -455,6 +456,50 @@ const SciScriptSignature laurabow2Signatures[] = { }; // =========================================================================== +// Mother Goose SCI1/SCI1.1 +// MG::replay somewhat calculates the savedgame-id used when saving again +// this doesn't work right and we remove the code completely. +// We set the savedgame-id directly right after restoring in kRestoreGame. +const byte mothergoose256SignatureReplay[] = { + 6, + 0x36, // push + 0x35, 0x20, // ldi 20 + 0x04, // sub + 0xa1, 0xb3, // sag global[b3] + 0 +}; + +const uint16 mothergoose256PatchReplay[] = { + 0x34, 0x00, 0x00, // ldi 0000 (dummy) + 0x34, 0x00, 0x00, // ldi 0000 (dummy) + PATCH_END +}; + +// when saving, it also checks if the savegame-id is below 13. +// we change this to check if below 113 instead +const byte mothergoose256SignatureSaveLimit[] = { + 5, + 0x89, 0xb3, // lsg global[b3] + 0x35, 0x0d, // ldi 0d + 0x20, // ge? + 0 +}; + +const uint16 mothergoose256PatchSaveLimit[] = { + PATCH_ADDTOOFFSET | +2, + 0x35, 0x0d + SAVEGAMEID_OFFICIALRANGE_START, // ldi 113d + PATCH_END +}; + +// script, description, magic DWORD, adjust +const SciScriptSignature mothergoose256Signatures[] = { + { 0, "replay save issue", PATCH_MAGICDWORD(0x20, 0x04, 0xa1, 0xb3), -2, mothergoose256SignatureReplay, mothergoose256PatchReplay }, + { 0, "save limit dialog (SCI1.1)", PATCH_MAGICDWORD(0xb3, 0x35, 0x0d, 0x20), -1, mothergoose256SignatureSaveLimit, mothergoose256PatchSaveLimit }, + { 994, "save limit dialog (SCI1)", PATCH_MAGICDWORD(0xb3, 0x35, 0x0d, 0x20), -1, mothergoose256SignatureSaveLimit, mothergoose256PatchSaveLimit }, + { 0, NULL, 0, 0, NULL, NULL } +}; + +// =========================================================================== // script 298 of sq4/floppy has an issue. object "nest" uses another property // which isn't included in property count. We return 0 in that case, the game // adds it to nest::x. The problem is that the script also checks if x exceeds @@ -607,6 +652,8 @@ void Script::matchSignatureAndPatch(uint16 scriptNr, byte *scriptData, const uin signatureTable = laurabow2Signatures; if (g_sci->getGameId() == GID_LSL6) signatureTable = larry6Signatures; + if (g_sci->getGameId() == GID_MOTHERGOOSE256) + signatureTable = mothergoose256Signatures; if (g_sci->getGameId() == GID_SQ4) signatureTable = sq4Signatures; if (g_sci->getGameId() == GID_SQ5) |