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Add save->bool (valid) & documentation

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This commit is contained in:
Kurt
2015-10-04 16:56:47 -07:00
parent 3cf58aa010
commit b9fdaf5109
1 changed files with 54 additions and 5 deletions
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59
Misc/PKX.cs
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@@ -692,6 +692,9 @@ public SaveGame(string GameID)
#endregion
// SAV Manipulation
/// <summary>Calculates the CRC16-CCITT checksum.</summary>
/// <param name="data">Input byte array</param>
/// <returns>Checksum</returns>
internal static ushort ccitt16(byte[] data)
{
ushort crc = 0xFFFF;
@@ -708,6 +711,51 @@ internal static ushort ccitt16(byte[] data)
}
return crc;
}
/// <summary>Simple check to see if the save is valid.</summary>
/// <param name="savefile">Input binary file</param>
/// <returns>True/False</returns>
internal static bool verifyG6SAV(byte[] savefile)
{
// Dynamic handling of checksums regardless of save size.
int verificationOffset = savefile.Length - 0x200 + 0x10;
if (BitConverter.ToUInt32(savefile, verificationOffset) != 0x42454546)
verificationOffset -= 0x200; // No savegames have more than 0x3D blocks, maybe in the future?
int count = (savefile.Length - verificationOffset - 0x8) / 8;
verificationOffset += 4;
int[] Lengths = new int[count];
ushort[] BlockIDs = new ushort[count];
ushort[] Checksums = new ushort[count];
int[] Start = new int[count];
int CurrentPosition = 0;
for (int i = 0; i < count; i++)
{
Start[i] = CurrentPosition;
Lengths[i] = BitConverter.ToInt32(savefile, verificationOffset + 0 + 8 * i);
BlockIDs[i] = BitConverter.ToUInt16(savefile, verificationOffset + 4 + 8 * i);
Checksums[i] = BitConverter.ToUInt16(savefile, verificationOffset + 6 + 8 * i);
CurrentPosition += (Lengths[i] % 0x200 == 0) ? Lengths[i] : (0x200 - Lengths[i] % 0x200 + Lengths[i]);
if ((BlockIDs[i] != 0) || i == 0) continue;
count = i;
break;
}
// Verify checksums
for (int i = 0; i < count; i++)
{
ushort chk = ccitt16(savefile.Skip(Start[i]).Take(Lengths[i]).ToArray());
ushort old = BitConverter.ToUInt16(savefile, verificationOffset + 6 + i * 8);
if (chk != old)
return false;
}
return true;
}
/// <summary>Verbose check to see if the save is valid.</summary>
/// <param name="savefile">Input binary file</param>
/// <returns>String containing invalid blocks.</returns>
internal static string verifyG6CHK(byte[] savefile)
{
string rv = "";
@@ -753,6 +801,9 @@ internal static string verifyG6CHK(byte[] savefile)
rv += String.Format("SAV: {0}/{1}", (count - invalid), count + Environment.NewLine);
return rv;
}
/// <summary>Fix checksums in the input save file.</summary>
/// <param name="savefile">Input binary file</param>
/// <returns>Fixed save file.</returns>
internal static void writeG6CHK(byte[] savefile)
{
// Dynamic handling of checksums regardless of save size.
@@ -1246,11 +1297,9 @@ internal static string[] getFormList(int species, string[] t, string[] f, string
return new[] {""};
}
/// <summary>
/// Calculate the Hidden Power Type of the entered IVs.
/// </summary>
/// <param name="ivs">HP/ATK/DEF/SPEED/SPA/SPD</param>
/// <returns></returns>
/// <summary>Calculate the Hidden Power Type of the entered IVs.</summary>
/// <param name="ivs">Order: HP,ATK,DEF,SPEED,SPA,SPD</param>
/// <returns>Hidden Power Type</returns>
internal static int getHPType(int[] ivs)
{
return (15 * ((ivs[0] & 1) + 2 * (ivs[1] & 1) + 4 * (ivs[2] & 1) + 8 * (ivs[3] & 1) + 16 * (ivs[4] & 1) + 32 * (ivs[5] & 1))) / 63;