mirror of
https://github.com/RetroDECK/Duckstation.git
synced 2024-11-22 22:05:38 +00:00
Cheats: Add additional code types from @PugsyMAME
This commit is contained in:
Connor McLaughlin
parent
7dcacc2cda
commit
3f410ebbac
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@ -694,10 +694,12 @@ std::vector<std::string> CheatList::GetCodeGroups() const
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void CheatList::SetCodeEnabled(u32 index, bool state)
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{
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if (index >= m_codes.size())
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if (index >= m_codes.size() || m_codes[index].enabled == state)
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return;
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m_codes[index].enabled = state;
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if (!state)
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m_codes[index].ApplyOnDisable();
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}
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void CheatList::EnableCode(u32 index)
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@ -887,6 +889,54 @@ void CheatCode::Apply() const
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}
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break;
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case InstructionCode::ExtConstantBitSet8:
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{
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const u8 value = DoMemoryRead<u8>(inst.address) | inst.value8;
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DoMemoryWrite<u8>(inst.address, value);
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index++;
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}
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break;
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case InstructionCode::ExtConstantBitSet16:
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{
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const u16 value = DoMemoryRead<u16>(inst.address) | inst.value16;
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DoMemoryWrite<u16>(inst.address, value);
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index++;
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}
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break;
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case InstructionCode::ExtConstantBitSet32:
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{
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const u32 value = DoMemoryRead<u32>(inst.address) | inst.value32;
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DoMemoryWrite<u32>(inst.address, value);
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index++;
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}
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break;
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case InstructionCode::ExtConstantBitClear8:
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{
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const u8 value = DoMemoryRead<u8>(inst.address) & ~inst.value8;
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DoMemoryWrite<u8>(inst.address, value);
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index++;
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}
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break;
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case InstructionCode::ExtConstantBitClear16:
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{
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const u16 value = DoMemoryRead<u16>(inst.address) & ~inst.value16;
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DoMemoryWrite<u16>(inst.address, value);
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index++;
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}
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break;
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case InstructionCode::ExtConstantBitClear32:
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{
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const u32 value = DoMemoryRead<u32>(inst.address) & ~inst.value32;
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DoMemoryWrite<u32>(inst.address, value);
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index++;
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}
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break;
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case InstructionCode::ScratchpadWrite16:
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{
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DoMemoryWrite<u16>(CPU::DCACHE_LOCATION | (inst.address & CPU::DCACHE_OFFSET_MASK), inst.value16);
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@ -989,6 +1039,77 @@ void CheatCode::Apply() const
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}
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break;
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case InstructionCode::ExtConstantWriteIfMatch16:
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case InstructionCode::ExtConstantWriteIfMatchWithRestore16:
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{
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const u16 value = DoMemoryRead<u16>(inst.address);
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const u16 comparevalue = Truncate16(inst.value32 >> 16);
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const u16 newvalue = Truncate16(inst.value32 & 0xFFFFu);
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if (value == comparevalue)
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DoMemoryWrite<u16>(inst.address, newvalue);
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index++;
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}
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break;
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case InstructionCode::ExtConstantForceRange8:
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{
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const u8 value = DoMemoryRead<u8>(inst.address);
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const u8 min = Truncate8(inst.value32 & 0x000000FFu);
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const u8 max = Truncate8((inst.value32 & 0x0000FF00u) >> 8);
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const u8 overmin = Truncate8((inst.value32 & 0x00FF0000u) >> 16);
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const u8 overmax = Truncate8((inst.value32 & 0xFF000000u) >> 24);
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if ((value < min) || (value < min && min == 0x00u && max < 0xFEu))
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DoMemoryWrite<u8>(inst.address, overmin); // also handles a min value of 0x00
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else if (value > max)
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DoMemoryWrite<u8>(inst.address, overmax);
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index++;
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}
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break;
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case InstructionCode::ExtConstantForceRangeLimits16:
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{
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const u16 value = DoMemoryRead<u16>(inst.address);
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const u16 min = Truncate16(inst.value32 & 0x0000FFFFu);
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const u16 max = Truncate16((inst.value32 & 0xFFFF0000u) >> 16);
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if ((value < min) || (value < min && min == 0x0000u && max < 0xFFFEu))
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DoMemoryWrite<u16>(inst.address, min); // also handles a min value of 0x0000
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else if (value > max)
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DoMemoryWrite<u16>(inst.address, max);
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index++;
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}
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break;
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case InstructionCode::ExtConstantForceRangeRollRound16:
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{
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const u16 value = DoMemoryRead<u16>(inst.address);
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const u16 min = Truncate16(inst.value32 & 0x0000FFFFu);
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const u16 max = Truncate16((inst.value32 & 0xFFFF0000u) >> 16);
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if ((value < min) || (value < min && min == 0x0000u && max < 0xFFFEu))
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DoMemoryWrite<u16>(inst.address, max); // also handles a min value of 0x0000
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else if (value > max)
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DoMemoryWrite<u16>(inst.address, min);
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index++;
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}
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break;
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case InstructionCode::ExtConstantForceRange16:
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{
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const u16 min = Truncate16(inst.value32 & 0x0000FFFFu);
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const u16 max = Truncate16((inst.value32 & 0xFFFF0000u) >> 16);
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const u16 value = DoMemoryRead<u16>(inst.address);
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const Instruction& inst2 = instructions[index + 1];
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const u16 overmin = Truncate16(inst2.value32 & 0x0000FFFFu);
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const u16 overmax = Truncate16((inst2.value32 & 0xFFFF0000u) >> 16);
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if ((value < min) || (value < min && min == 0x0000u && max < 0xFFFEu))
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DoMemoryWrite<u16>(inst.address, overmin); // also handles a min value of 0x0000
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else if (value > max)
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DoMemoryWrite<u16>(inst.address, overmax);
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index += 2;
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}
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break;
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case InstructionCode::CompareEqual16:
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{
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const u16 value = DoMemoryRead<u16>(inst.address);
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@ -1214,6 +1335,95 @@ void CheatCode::Apply() const
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}
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}
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void CheatCode::ApplyOnDisable() const
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{
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const u32 count = static_cast<u32>(instructions.size());
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u32 index = 0;
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for (; index < count;)
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{
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const Instruction& inst = instructions[index];
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switch (inst.code)
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{
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case InstructionCode::Nop:
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case InstructionCode::ConstantWrite8:
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case InstructionCode::ConstantWrite16:
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case InstructionCode::ExtConstantWrite32:
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case InstructionCode::ExtConstantBitSet8:
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case InstructionCode::ExtConstantBitSet16:
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case InstructionCode::ExtConstantBitSet32:
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case InstructionCode::ExtConstantBitClear8:
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case InstructionCode::ExtConstantBitClear16:
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case InstructionCode::ExtConstantBitClear32:
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case InstructionCode::ScratchpadWrite16:
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case InstructionCode::ExtScratchpadWrite32:
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case InstructionCode::ExtIncrement32:
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case InstructionCode::ExtDecrement32:
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case InstructionCode::Increment16:
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case InstructionCode::Decrement16:
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case InstructionCode::Increment8:
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case InstructionCode::Decrement8:
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case InstructionCode::ExtConstantForceRange8:
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case InstructionCode::ExtConstantForceRangeLimits16:
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case InstructionCode::ExtConstantForceRangeRollRound16:
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case InstructionCode::DelayActivation: // C1
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case InstructionCode::ExtConstantWriteIfMatch16:
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index++;
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break;
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case InstructionCode::ExtConstantForceRange16:
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case InstructionCode::Slide:
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case InstructionCode::MemoryCopy:
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index += 2;
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break;
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// for conditionals, we don't want to skip over in case it changed at some point
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case InstructionCode::ExtCompareEqual32:
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case InstructionCode::ExtCompareNotEqual32:
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case InstructionCode::ExtCompareLess32:
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case InstructionCode::ExtCompareGreater32:
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case InstructionCode::CompareEqual16:
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case InstructionCode::CompareNotEqual16:
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case InstructionCode::CompareLess16:
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case InstructionCode::CompareGreater16:
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case InstructionCode::CompareEqual8:
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case InstructionCode::CompareNotEqual8:
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case InstructionCode::CompareLess8:
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case InstructionCode::CompareGreater8:
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case InstructionCode::CompareButtons: // D4
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index++;
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break;
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// same deal for block conditionals
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case InstructionCode::SkipIfNotEqual16: // C0
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case InstructionCode::ExtSkipIfNotEqual32: // A4
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case InstructionCode::SkipIfButtonsNotEqual: // D5
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case InstructionCode::SkipIfButtonsEqual: // D6
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index++;
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break;
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case InstructionCode::ExtConstantWriteIfMatchWithRestore16:
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{
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const u16 value = DoMemoryRead<u16>(inst.address);
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const u16 comparevalue = Truncate16(inst.value32 >> 16);
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const u16 newvalue = Truncate16(inst.value32 & 0xFFFFu);
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if (value == newvalue)
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DoMemoryWrite<u16>(inst.address, comparevalue);
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index++;
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}
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break;
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default:
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{
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Log_ErrorPrintf("Unhandled instruction code 0x%02X (%08X %08X)", static_cast<u8>(inst.code.GetValue()),
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inst.first, inst.second);
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index++;
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}
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break;
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}
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}
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}
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static std::array<const char*, 1> s_cheat_code_type_names = {{"Gameshark"}};
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static std::array<const char*, 1> s_cheat_code_type_display_names{{TRANSLATABLE("Cheats", "Gameshark")}};
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@ -56,6 +56,18 @@ struct CheatCode
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ExtSkipIfNotEqual32 = 0xA4,
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ExtIncrement32 = 0x60,
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ExtDecrement32 = 0x61,
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ExtConstantWriteIfMatch16 = 0xA6,
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ExtConstantWriteIfMatchWithRestore16 = 0xA7,
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ExtConstantForceRange8 = 0xF0,
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ExtConstantForceRangeLimits16 = 0xF1,
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ExtConstantForceRangeRollRound16 = 0xF2,
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ExtConstantForceRange16 = 0xF3,
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ExtConstantBitSet8 = 0x31,
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ExtConstantBitClear8 = 0x32,
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ExtConstantBitSet16 = 0x81,
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ExtConstantBitClear16 = 0x82,
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ExtConstantBitSet32 = 0x91,
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ExtConstantBitClear32 = 0x92,
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};
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union Instruction
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@ -92,6 +104,7 @@ struct CheatCode
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u32 GetNextNonConditionalInstruction(u32 index) const;
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void Apply() const;
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void ApplyOnDisable() const;
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static const char* GetTypeName(Type type);
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static const char* GetTypeDisplayName(Type type);
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