ShuriZma
/
BizHawk
mirror of https://github.com/TASEmulators/BizHawk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

move Psx GameShark decoding to its own class

This commit is contained in:
adelikat 2020-02-29 11:35:26 -06:00
parent 5b3a93c25c
commit 576c11e079
2 changed files with 86 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
BizHawk.Client.Common/cheats/PsxGameSharkDecoder.cs Normal file
View File

@ -0,0 +1,67 @@
using System;
using System.Globalization;
namespace BizHawk.Client.Common.cheats
{
// TODO: cheats support comparison type, so we could support a lot more codes, by having Compare and Type properties and parsing
public class PsxGameSharkDecoder
{
private readonly string _code;
public PsxGameSharkDecoder(string code)
{
_code = code;
Decode();
}
public int Address { get; private set; }
public int Value { get; private set; }
public int ByteSize { get; private set; } = 1;
// 30XXXXXX 00YY
public void Decode()
{
if (_code == null)
{
throw new ArgumentNullException(nameof(_code));
}
if (_code.IndexOf(" ") != 8)
{
throw new InvalidOperationException("All PSX GameShark Codes need to contain a space after the eighth character.");
}
if (_code.Length != 13)
{
throw new InvalidOperationException("All PSX GameShark Cheats need to be 13 characters in length.");
}
var type = _code.Substring(0, 2);
ByteSize = type switch
{
"10" => 2,
"11" => 2,
"20" => 1,
"21" => 1,
"30" => 1,
"80" => 2,
"D0" => 2,
"D1" => 2,
"D2" => 2,
"D3" => 2,
"D4" => 2,
"D5" => 2,
"D6" => 2,
"E0" => 1,
"E1" => 1,
"E2" => 1,
"E3" => 1,
_ => 1
};
var s = _code.Remove(0, 2);
Address = int.Parse(s.Remove(6, 5), NumberStyles.HexNumber);
Value = int.Parse(s.Remove(0, 7), NumberStyles.HexNumber);
}
}
}

67
BizHawk.Client.EmuHawk/tools/GameShark.cs
View File

@ -216,10 +216,10 @@ namespace BizHawk.Client.EmuHawk
// We don't have a GameShark code, or we have an encrypted code?
// Further testing required.
// GameShark Decryption Method
var _parseString = cheat;
var parseString = cheat;
op1 = uint.Parse(_parseString.Remove(8, 9), NumberStyles.HexNumber);
op2 = uint.Parse(_parseString.Remove(0, 9), NumberStyles.HexNumber);
op1 = uint.Parse(parseString.Remove(8, 9), NumberStyles.HexNumber);
op2 = uint.Parse(parseString.Remove(0, 9), NumberStyles.HexNumber);
// Tiny Encryption Algorithm
for (int i = 0; i < 32; ++i)
@ -2378,57 +2378,38 @@ namespace BizHawk.Client.EmuHawk
}
// This determines what kind of Code we have
var test = cheat.Remove(2, 11);
var test = cheat.Substring(0, 2);
switch (test)
{
// 30 80 Cheats mean, "Write, don't care otherwise."
case "30":
_byteSize = 8;
break;
case "80":
_byteSize = 16;
break;
// When value hits YYYY, make the next cheat go off
case "E0":
// E0 byteSize = 8;
case "E1":
// E1 byteSize = 8;
case "E2":
// E2 byteSize = 8;
case "D0":
// D0 byteSize = 16;
case "D1":
// D1 byteSize = 16;
case "D2":
// D2 byteSize = 16;
case "D3":
// D3 byteSize = 16;
case "D4":
// D4 byteSize = 16;
case "D5":
// D5 byteSize = 16;
case "D6":
// D6 byteSize = 16;
// Increment/Decrement Codes
case "10":
// 10 byteSize = 16;
case "11":
// 11 byteSize = 16;
case "20":
// 20 byteSize = 8
case "21":
// 21 byteSize = 8
MessageBox.Show("The code you entered is not supported by BizHawk.", "Emulator Error", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
case "C0":
case "C1":
case "C2":
MessageBox.Show("The code you entered is not supported by BizHawk.", "Emulator Error", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
// Slow-Mo
case "40":
MessageBox.Show("The code you entered is not needed by Bizhawk.", "Input Error", MessageBoxButtons.OK, MessageBoxIcon.Information);
InputError("The code you entered is not needed by Bizhawk.");
return;
case "C2":
case "50":
MessageBox.Show("The code you entered is not supported by this tool. Please Submit the Game's Name, Cheat/Code and Purpose to the BizHawk forums.", "Tool Error", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
@ -2437,32 +2418,22 @@ namespace BizHawk.Client.EmuHawk
return;
}
// Sample Input for PSX:
// 800D10BA 0009
// Address: 0D10BA
// Value: 0009
// Remove first two octets
var parseString = cheat.Remove(0, 2);
// Get RAM Address
_ramAddress = parseString.Remove(6, 5);
// Get RAM Value
_ramValue = parseString.Remove(0, 7);
var decoder = new PsxGameSharkDecoder(cheat);
try
{
// A Watch needs to be generated so we can make a cheat out of that. This is due to how the Cheat engine works.
// System Bus Domain, The Address to Watch, Byte size (Word), Hex Display, Description. Big Endian.
// My Concern is that Work RAM High may be incorrect?
if (_byteSize == 8)
if (decoder.ByteSize == 1)
{
var watch = Watch.GenerateWatch(MemoryDomains["MainRAM"], long.Parse(_ramAddress, NumberStyles.HexNumber), WatchSize.Byte, Common.DisplayType.Hex, false, txtDescription.Text);
Global.CheatList.Add(new Cheat(watch, int.Parse(_ramValue, NumberStyles.HexNumber)));
var watch = Watch.GenerateWatch(MemoryDomains["MainRAM"], decoder.Address, WatchSize.Byte, Common.DisplayType.Hex, false, txtDescription.Text);
Global.CheatList.Add(new Cheat(watch, decoder.Value));
}
else if (_byteSize == 16)
else
{
var watch = Watch.GenerateWatch(MemoryDomains["MainRAM"], long.Parse(_ramAddress, NumberStyles.HexNumber), WatchSize.Word, Common.DisplayType.Hex, false, txtDescription.Text);
Global.CheatList.Add(new Cheat(watch, int.Parse(_ramValue, NumberStyles.HexNumber)));
var watch = Watch.GenerateWatch(MemoryDomains["MainRAM"], decoder.Address, WatchSize.Word, Common.DisplayType.Hex, false, txtDescription.Text);
Global.CheatList.Add(new Cheat(watch, decoder.Value));
}
}
catch (Exception ex)
@ -2515,13 +2486,13 @@ namespace BizHawk.Client.EmuHawk
// Value: 90
// Note, 3XXXXXXX are Big Endian
// Remove first two octets
var _parseString = cheat.Remove(0, 2);
var parseString = cheat.Remove(0, 2);
// Get RAM Address
_ramAddress = _parseString.Remove(6, 5);
_ramAddress = parseString.Remove(6, 5);
// Get RAM Value
_ramValue = _parseString.Remove(0, 7);
_ramValue = parseString.Remove(0, 7);
try
{
// A Watch needs to be generated so we can make a cheat out of that. This is due to how the Cheat engine works.