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mame: add lag, even tho the core can't set it 

there's no concept of "controller poll" in mame, because this information isn't considered useful by them, and it also has to be done for every machine separately. theoretically it can be determined by watching controller register reads, but that requires running the entire debugger UI and setting watchpoints manually via debugger console, which is also super complicated. mame lua can set WPs, but only if debugger is there. even then, there's no way to assign lua callbacks to WPs. I'm planning to add simple mem hooks to mame lua some day, but it will be super hard due to incredibly complex abstraction, and there's no guarantee they will even merge it.
This commit is contained in:
feos 2020-04-10 12:38:25 +03:00
parent cc4b12b0ae
commit 7d06f6cbd1
1 changed files with 18 additions and 2 deletions
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20
BizHawk.Emulation.Cores/Arcades/MAME/MAME.cs
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@ -22,7 +22,7 @@ namespace BizHawk.Emulation.Cores.Arcades.MAME
portedVersion: "0.220",
portedUrl: "https://github.com/mamedev/mame.git",
singleInstance: false)]
public partial class MAME : IEmulator, IVideoProvider, ISoundProvider, ISettable<object, MAME.SyncSettings>, IStatable
public partial class MAME : IEmulator, IVideoProvider, ISoundProvider, ISettable<object, MAME.SyncSettings>, IStatable, IInputPollable
{
public MAME(string dir, string file, object syncSettings, out string gamename)
{
@ -103,6 +103,11 @@ namespace BizHawk.Emulation.Cores.Arcades.MAME
public int BufferHeight { get; private set; } = 240;
public int VsyncNumerator { get; private set; } = 60;
public int VsyncDenominator { get; private set; } = 1;
public int LagCount { get; set; } = 0;
public bool IsLagFrame { get; set; } = false;
[FeatureNotImplemented]
public IInputCallbackSystem InputCallbacks => throw new NotImplementedException();
#endregion
@ -160,12 +165,19 @@ namespace BizHawk.Emulation.Cores.Arcades.MAME
Frame++;
if (IsLagFrame)
{
LagCount++;
}
return true;
}
public void ResetCounters()
{
Frame = 0;
LagCount = 0;
IsLagFrame = false;
}
public void Dispose()
@ -201,6 +213,8 @@ namespace BizHawk.Emulation.Cores.Arcades.MAME
writer.Write(_mameSaveBuffer);
writer.Write(Frame);
writer.Write(LagCount);
writer.Write(IsLagFrame);
_memoryAccessComplete.Set();
_memAccess = false;
@ -227,6 +241,8 @@ namespace BizHawk.Emulation.Cores.Arcades.MAME
}
Frame = reader.ReadInt32();
LagCount = reader.ReadInt32();
IsLagFrame = reader.ReadBoolean();
_memoryAccessComplete.Set();
_memAccess = false;
@ -707,7 +723,7 @@ namespace BizHawk.Emulation.Cores.Arcades.MAME
int length = LibMAME.mame_lua_get_int("return string.len(manager:machine():buffer_save())");
_mameSaveBuffer = new byte[length];
_hawkSaveBuffer = new byte[length + 4 + 4];
_hawkSaveBuffer = new byte[length + 4 + 4 + 4 + 1];
_mameStartupComplete.Set();
}