demo recording stuff p2

Source/Game/PlayerInputLocal.cs

@@ -0,0 +1,95 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Net;
+using System.Runtime.InteropServices;
+using FlaxEngine;
+
+namespace Game
+{
+	public class PlayerInputLocal : PlayerInput
+	{
+		protected List<PlayerInputState> buffer = new List<PlayerInputState>();
+		protected FileStream demoFileStream;
+
+		public bool IsRecording { get { return demoFileStream != null; } }
+
+		public PlayerInputLocal()
+		{
+		}
+
+		public PlayerInputLocal(string demoPath)
+		{
+			demoFileStream = File.Open(demoPath, FileMode.Create, FileAccess.Write);
+			//stream.Position = 0;
+			//stream.SetLength(0);
+			demoFileStream.WriteByte(DemoVer);
+			demoFileStream.WriteByte((byte)Marshal.SizeOf(typeof(PlayerInputState)));
+		}
+
+		public override void OnUpdate()
+		{
+			lastState = currentState;
+
+			// Record camera angles here?
+			currentState.input.viewDeltaX = InputManager.GetAxisRaw("Mouse X");
+			currentState.input.viewDeltaY = InputManager.GetAxisRaw("Mouse Y");
+		}
+
+		public override void OnFixedUpdate()
+		{
+			// Record intent here
+			currentState.input.moveForward = InputManager.GetAxis("Vertical");
+			currentState.input.moveRight = InputManager.GetAxis("Horizontal");
+			currentState.input.attacking = InputManager.GetAction("Attack");
+			currentState.input.jumping = InputManager.GetAction("Jump");
+		}
+
+		public override void OnEndFrame()
+		{
+			if (IsRecording)
+			{
+				currentState.input.frame = frame;
+				buffer.Add(currentState.input);
+			}
+			frame++;
+		}
+
+		public void FlushDemo()
+		{
+			if (!IsRecording)
+				return;
+
+			byte[] RawSerialize(object anything)
+			{
+				int rawSize = Marshal.SizeOf(anything);
+				IntPtr buffer = Marshal.AllocHGlobal(rawSize);
+				Marshal.StructureToPtr(anything, buffer, false);
+				byte[] rawDatas = new byte[rawSize];
+				Marshal.Copy(buffer, rawDatas, 0, rawSize);
+				Marshal.FreeHGlobal(buffer);
+				return rawDatas;
+			}
+
+			foreach (var state in buffer)
+			{
+				var bytes = RawSerialize(state);
+				demoFileStream.Write(bytes, 0, bytes.Length * sizeof(byte));
+			}
+
+			buffer.Clear();
+		}
+
+		public void StopRecording()
+		{
+			if (!IsRecording)
+				return;
+
+			FlushDemo();
+			demoFileStream.Close();
+			demoFileStream = null;
+
+			Debug.Write(LogType.Info, "demo, wrote states: " + buffer.Count);
+		}
+	}
+}