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ShotPackage.cs
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ShotPackage.cs
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namespace Marathon.Formats.Package
{
/// <summary>
/// File base for the ShotParameter.bin format.
/// <para>Used in SONIC THE HEDGEHOG for projectile properties.</para>
/// </summary>
public class ShotPackage : FileBase
{
public ShotPackage() { }
public ShotPackage(string file, bool serialise = false)
{
switch (Path.GetExtension(file))
{
case ".json":
{
Parameters = JsonDeserialise<List<ShotParameter>>(file);
// Save extension-less JSON (exploiting .NET weirdness, because it doesn't omit all extensions).
if (serialise)
Save(Path.GetFileNameWithoutExtension(file));
break;
}
default:
{
Load(file);
if (serialise)
JsonSerialise(Parameters);
break;
}
}
}
public override string Extension { get; } = ".bin";
public List<ShotParameter> Parameters { get; set; } = new();
public override void Load(Stream stream)
{
BINAReader reader = new(stream);
// Store first offset after the header.
long startPosition = reader.BaseStream.Position;
// Store the offset to the first string entry (repurposed as offset table length).
uint offsetTableLength = reader.ReadUInt32();
// Jump back to the first offset so we can iterate through the loop.
reader.JumpTo(startPosition);
// Read stream until we've reached the end of the offset table.
while (reader.BaseStream.Position < offsetTableLength)
{
ShotParameter entry = new();
uint NameOffset = reader.ReadUInt32();
uint ModelOffset = reader.ReadUInt32();
uint UnknownString_1Offset = reader.ReadUInt32();
uint UnknownString_2Offset = reader.ReadUInt32();
entry.UnknownUInt32_1 = reader.ReadUInt32();
entry.UnknownFloat_1 = reader.ReadSingle();
entry.UnknownFloat_2 = reader.ReadSingle();
entry.UnknownUInt32_2 = reader.ReadUInt32();
entry.UnknownFloat_3 = reader.ReadSingle();
entry.UnknownFloat_4 = reader.ReadSingle();
entry.UnknownFloat_5 = reader.ReadSingle();
entry.UnknownFloat_6 = reader.ReadSingle();
entry.UnknownFloat_7 = reader.ReadSingle();
entry.UnknownUInt32_3 = reader.ReadUInt32();
entry.UnknownFloat_8 = reader.ReadSingle();
entry.UnknownFloat_9 = reader.ReadSingle();
uint ExplosionOffset = reader.ReadUInt32();
uint ParticleBank1Offset = reader.ReadUInt32();
uint ParticleName1Offset = reader.ReadUInt32();
uint SoundBankOffset = reader.ReadUInt32();
uint SoundOffset = reader.ReadUInt32();
uint ParticleBank2Offset = reader.ReadUInt32();
uint ParticleName2Offset = reader.ReadUInt32();
uint ParticleBank3Offset = reader.ReadUInt32();
uint ParticleName3Offset = reader.ReadUInt32();
uint UnknownString_3Offset = reader.ReadUInt32();
// Store current position to jump back to for the next entry.
long position = reader.BaseStream.Position;
// Read all the string values.
entry.Name = reader.ReadNullTerminatedString(false, NameOffset, true);
entry.Model = reader.ReadNullTerminatedString(false, ModelOffset, true);
entry.UnknownString_1 = reader.ReadNullTerminatedString(false, UnknownString_1Offset, true);
entry.UnknownString_2 = reader.ReadNullTerminatedString(false, UnknownString_2Offset, true);
entry.Explosion = reader.ReadNullTerminatedString(false, ExplosionOffset, true);
entry.ParticleBank1 = reader.ReadNullTerminatedString(false, ParticleBank1Offset, true);
entry.ParticleName1 = reader.ReadNullTerminatedString(false, ParticleName1Offset, true);
entry.SoundBank = reader.ReadNullTerminatedString(false, SoundBankOffset, true);
entry.SoundName = reader.ReadNullTerminatedString(false, SoundOffset, true);
entry.ParticleBank2 = reader.ReadNullTerminatedString(false, ParticleBank2Offset, true);
entry.ParticleName2 = reader.ReadNullTerminatedString(false, ParticleName2Offset, true);
entry.ParticleBank3 = reader.ReadNullTerminatedString(false, ParticleBank3Offset, true);
entry.ParticleName3 = reader.ReadNullTerminatedString(false, ParticleName3Offset, true);
entry.UnknownString_3 = reader.ReadNullTerminatedString(false, UnknownString_3Offset, true);
// Jump back to the saved position to read the next object.
reader.JumpTo(position);
// Save object entry into the Entries list.
Parameters.Add(entry);
}
}
public override void Save(Stream stream)
{
BINAWriter writer = new(stream);
// Write the objects.
for (int i = 0; i < Parameters.Count; i++)
{
writer.AddString($"entry{i}Name", Parameters[i].Name);
writer.AddString($"entry{i}Model", Parameters[i].Model);
writer.AddString($"entry{i}UnknownString_1", Parameters[i].UnknownString_1);
writer.AddString($"entry{i}UnknownString_2", Parameters[i].UnknownString_2);
writer.Write(Parameters[i].UnknownUInt32_1);
writer.Write(Parameters[i].UnknownFloat_1);
writer.Write(Parameters[i].UnknownFloat_2);
writer.Write(Parameters[i].UnknownUInt32_2);
writer.Write(Parameters[i].UnknownFloat_3);
writer.Write(Parameters[i].UnknownFloat_4);
writer.Write(Parameters[i].UnknownFloat_5);
writer.Write(Parameters[i].UnknownFloat_6);
writer.Write(Parameters[i].UnknownFloat_7);
writer.Write(Parameters[i].UnknownUInt32_3);
writer.Write(Parameters[i].UnknownFloat_8);
writer.Write(Parameters[i].UnknownFloat_9);
writer.AddString($"entry{i}Explosion", Parameters[i].Explosion);
writer.AddString($"entry{i}ParticleBank1", Parameters[i].ParticleBank1);
writer.AddString($"entry{i}Particle1", Parameters[i].ParticleName1);
writer.AddString($"entry{i}SceneBank", Parameters[i].SoundBank);
writer.AddString($"entry{i}Sound", Parameters[i].SoundName);
writer.AddString($"entry{i}ParticleBank2", Parameters[i].ParticleBank2);
writer.AddString($"entry{i}Particle2", Parameters[i].ParticleName2);
writer.AddString($"entry{i}ParticleBank2", Parameters[i].ParticleBank3);
writer.AddString($"entry{i}Particle3", Parameters[i].ParticleName3);
writer.AddString($"entry{i}UnknownString_3", Parameters[i].UnknownString_3);
}
// Write the footer.
writer.WriteNulls(4);
writer.FinishWrite();
}
}
public class ShotParameter
{
public string Name { get; set; }
public string Model { get; set; }
/// <summary>
/// TODO: Unknown - only used by the Egg Buster missile?
/// </summary>
public string UnknownString_1 { get; set; }
/// <summary>
/// TODO: Unknown - only used by the Egg Buster missile?
/// </summary>
public string UnknownString_2 { get; set; }
public uint UnknownUInt32_1 { get; set; }
public float UnknownFloat_1 { get; set; }
public float UnknownFloat_2 { get; set; }
public uint UnknownUInt32_2 { get; set; }
public float UnknownFloat_3 { get; set; }
public float UnknownFloat_4 { get; set; }
public float UnknownFloat_5 { get; set; }
public float UnknownFloat_6 { get; set; }
public float UnknownFloat_7 { get; set; }
public uint UnknownUInt32_3 { get; set; }
public float UnknownFloat_8 { get; set; }
public float UnknownFloat_9 { get; set; }
public string Explosion { get; set; }
public string ParticleBank1 { get; set; }
public string ParticleName1 { get; set; }
public string SoundBank { get; set; }
public string SoundName { get; set; }
public string ParticleBank2 { get; set; }
public string ParticleName2 { get; set; }
public string ParticleBank3 { get; set; }
public string ParticleName3 { get; set; }
/// <summary>
/// TODO: Unknown - either empty or misfired stuff.
/// </summary>
public string UnknownString_3 { get; set; }
public override string ToString() => Name;
}
}