/// <summary>
/// 切り取ったバイト配列を新規で確保したメモリにコピーし、それを文字列用のポインタとして返す
/// </summary>
/// <param name="source">ソース</param>
/// <param name="start">切り取り開始位置</param>
/// <param name="length">データの長さ</param>
/// <param name="allocator">Allocator</param>
/// <returns>文字列のポインタ</returns>
StringPtr SliceToStringPtr(NativeArray <byte> source, int start, int length, Allocator allocator)
{
var slice = new NativeSlice <byte>(source, start, length);
byte *arrPtr = (byte *)UnsafeUtility.Malloc(length, UnsafeUtility.AlignOf <byte>(), allocator);
UnsafeUtility.MemClear(arrPtr, length);
UnsafeUtility.MemCpy(arrPtr, NativeSliceUnsafeUtility.GetUnsafePtr(slice), length);
return(new StringPtr {
Data = arrPtr, Length = length
});
}
/// <summary>
/// Reads a frame of input to the file.
/// </summary>
/// <param name="inputs">a frame of input to read.</param>
public unsafe void ReadInputs(NativeSlice <PlayerInput> inputs)
{
Assert.IsTrue(inputs.Length == _config.PlayerCount);
var ptr = (byte *)NativeSliceUnsafeUtility.GetUnsafePtr(inputs);
int size = _config.PlayerCount * UnsafeUtility.SizeOf <PlayerInput>();
ulong checksum = _reader.ReadULong();
_reader.ReadBytes(ptr, size);
ulong hash = XXHash.Hash64(ptr, size);
Assert.AreEqual(checksum, hash);
}