diff options
Diffstat (limited to 'engines/sci/engine/script_patches.cpp')
| -rw-r--r-- | engines/sci/engine/script_patches.cpp | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/engines/sci/engine/script_patches.cpp b/engines/sci/engine/script_patches.cpp index 61cd437865..6d8938c7a4 100644 --- a/engines/sci/engine/script_patches.cpp +++ b/engines/sci/engine/script_patches.cpp @@ -2136,9 +2136,34 @@ static const uint16 kq7BenchmarkPatch[] = { PATCH_END }; +// When attempting to use an inventory item on an object that does not interact +// with that item, the game temporarily displays an X cursor, but does this by +// spinning for 90000 cycles, which make the duration dependent on CPU speed, +// maxes out the CPU for no reason, and keeps the engine from polling for events +// (which may make the window appear nonresponsive to the OS) +// Applies to at least: KQ7 English 2.00b +static const uint16 kq7PragmaFailSpinSignature[] = { + 0x35, 0x00, // ldi 0 + 0xa5, 0x02, // sat 2 + SIG_MAGICDWORD, + 0x8d, 0x02, // lst 2 + 0x35, 0x03, // ldi 3 + 0x22, // lt? + SIG_END +}; + +static const uint16 kq7PragmaFailSpinPatch[] = { + 0x78, // push1 + 0x39, 0x12, // pushi 18 (~300ms) + 0x43, kScummVMWaitId, PATCH_UINT16(0x02), // callk Wait, 2 + 0x33, 0x16, // jmp to setCursor + PATCH_END +}; + // script, description, signature patch static const SciScriptPatcherEntry kq7Signatures[] = { { true, 0, "disable video benchmarking", 1, kq7BenchmarkSignature, kq7BenchmarkPatch }, + { true, 0, "remove hardcoded spinloop", 1, kq7PragmaFailSpinSignature, kq7PragmaFailSpinPatch }, { true, 31, "subtitle fix 1/3", 1, kq7SignatureSubtitleFix1, kq7PatchSubtitleFix1 }, { true, 64928, "subtitle fix 2/3", 1, kq7SignatureSubtitleFix2, kq7PatchSubtitleFix2 }, { true, 64928, "subtitle fix 3/3", 1, kq7SignatureSubtitleFix3, kq7PatchSubtitleFix3 }, |