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AssettoCorsa.cs
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AssettoCorsa.cs
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.IO.MemoryMappedFiles;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Timers;
namespace AssettoCorsaSharedMemory
{
public delegate void PhysicsUpdatedHandler(object sender, PhysicsEventArgs e);
public delegate void GraphicsUpdatedHandler(object sender, GraphicsEventArgs e);
public delegate void StaticInfoUpdatedHandler(object sender, StaticInfoEventArgs e);
public delegate void GameStatusChangedHandler(object sender, GameStatusEventArgs e);
public class AssettoCorsaNotStartedException : Exception
{
public AssettoCorsaNotStartedException()
: base("Shared Memory not connected, is Assetto Corsa running and have you run assettoCorsa.Start()?")
{
}
}
enum AC_MEMORY_STATUS { DISCONNECTED, CONNECTING, CONNECTED }
public class AssettoCorsa
{
private Timer sharedMemoryRetryTimer;
private AC_MEMORY_STATUS memoryStatus = AC_MEMORY_STATUS.DISCONNECTED;
public bool IsRunning { get { return (memoryStatus == AC_MEMORY_STATUS.CONNECTED); } }
private AC_STATUS gameStatus = AC_STATUS.AC_OFF;
public event GameStatusChangedHandler GameStatusChanged;
public virtual void OnGameStatusChanged(GameStatusEventArgs e)
{
if (GameStatusChanged != null)
{
GameStatusChanged(this, e);
}
}
public static readonly Dictionary<AC_STATUS, string> StatusNameLookup = new Dictionary<AC_STATUS, string>
{
{ AC_STATUS.AC_OFF, "Off" },
{ AC_STATUS.AC_LIVE, "Live" },
{ AC_STATUS.AC_PAUSE, "Pause" },
{ AC_STATUS.AC_REPLAY, "Replay" },
};
public AssettoCorsa()
{
sharedMemoryRetryTimer = new Timer(2000);
sharedMemoryRetryTimer.AutoReset = true;
sharedMemoryRetryTimer.Elapsed += sharedMemoryRetryTimer_Elapsed;
physicsTimer = new Timer();
physicsTimer.AutoReset = true;
physicsTimer.Elapsed += physicsTimer_Elapsed;
PhysicsInterval = 10;
graphicsTimer = new Timer();
graphicsTimer.AutoReset = true;
graphicsTimer.Elapsed += graphicsTimer_Elapsed;
GraphicsInterval = 1000;
staticInfoTimer = new Timer();
staticInfoTimer.AutoReset = true;
staticInfoTimer.Elapsed += staticInfoTimer_Elapsed;
StaticInfoInterval = 1000;
Stop();
}
/// <summary>
/// Connect to the shared memory and start the update timers
/// </summary>
public void Start()
{
sharedMemoryRetryTimer.Start();
}
void sharedMemoryRetryTimer_Elapsed(object sender, ElapsedEventArgs e)
{
ConnectToSharedMemory();
}
private bool ConnectToSharedMemory()
{
try
{
memoryStatus = AC_MEMORY_STATUS.CONNECTING;
// Connect to shared memory
physicsMMF = MemoryMappedFile.OpenExisting("Local\\acpmf_physics");
graphicsMMF = MemoryMappedFile.OpenExisting("Local\\acpmf_graphics");
staticInfoMMF = MemoryMappedFile.OpenExisting("Local\\acpmf_static");
// Start the timers
staticInfoTimer.Start();
ProcessStaticInfo();
graphicsTimer.Start();
ProcessGraphics();
physicsTimer.Start();
ProcessPhysics();
// Stop retry timer
sharedMemoryRetryTimer.Stop();
memoryStatus = AC_MEMORY_STATUS.CONNECTED;
return true;
}
catch (FileNotFoundException)
{
staticInfoTimer.Stop();
graphicsTimer.Stop();
physicsTimer.Stop();
return false;
}
}
/// <summary>
/// Stop the timers and dispose of the shared memory handles
/// </summary>
public void Stop()
{
memoryStatus = AC_MEMORY_STATUS.DISCONNECTED;
sharedMemoryRetryTimer.Stop();
// Stop the timers
physicsTimer.Stop();
graphicsTimer.Stop();
staticInfoTimer.Stop();
}
/// <summary>
/// Interval for physics updates in milliseconds
/// </summary>
public double PhysicsInterval
{
get
{
return physicsTimer.Interval;
}
set
{
physicsTimer.Interval = value;
}
}
/// <summary>
/// Interval for graphics updates in milliseconds
/// </summary>
public double GraphicsInterval
{
get
{
return graphicsTimer.Interval;
}
set
{
graphicsTimer.Interval = value;
}
}
/// <summary>
/// Interval for static info updates in milliseconds
/// </summary>
public double StaticInfoInterval
{
get
{
return staticInfoTimer.Interval;
}
set
{
staticInfoTimer.Interval = value;
}
}
MemoryMappedFile physicsMMF;
MemoryMappedFile graphicsMMF;
MemoryMappedFile staticInfoMMF;
Timer physicsTimer;
Timer graphicsTimer;
Timer staticInfoTimer;
/// <summary>
/// Represents the method that will handle the physics update events
/// </summary>
public event PhysicsUpdatedHandler PhysicsUpdated;
/// <summary>
/// Represents the method that will handle the graphics update events
/// </summary>
public event GraphicsUpdatedHandler GraphicsUpdated;
/// <summary>
/// Represents the method that will handle the static info update events
/// </summary>
public event StaticInfoUpdatedHandler StaticInfoUpdated;
public virtual void OnPhysicsUpdated(PhysicsEventArgs e)
{
if (PhysicsUpdated != null)
{
PhysicsUpdated(this, e);
}
}
public virtual void OnGraphicsUpdated(GraphicsEventArgs e)
{
if (GraphicsUpdated != null)
{
GraphicsUpdated(this, e);
if (gameStatus != e.Graphics.Status)
{
gameStatus = e.Graphics.Status;
GameStatusChanged(this, new GameStatusEventArgs(gameStatus));
}
}
}
public virtual void OnStaticInfoUpdated(StaticInfoEventArgs e)
{
if (StaticInfoUpdated != null)
{
StaticInfoUpdated(this, e);
}
}
private void physicsTimer_Elapsed(object sender, ElapsedEventArgs e)
{
ProcessPhysics();
}
private void graphicsTimer_Elapsed(object sender, ElapsedEventArgs e)
{
ProcessGraphics();
}
private void staticInfoTimer_Elapsed(object sender, ElapsedEventArgs e)
{
ProcessStaticInfo();
}
private void ProcessPhysics()
{
if (memoryStatus == AC_MEMORY_STATUS.DISCONNECTED)
return;
try
{
Physics physics = ReadPhysics();
OnPhysicsUpdated(new PhysicsEventArgs(physics));
}
catch (AssettoCorsaNotStartedException)
{ }
}
private void ProcessGraphics()
{
if (memoryStatus == AC_MEMORY_STATUS.DISCONNECTED)
return;
try
{
Graphics graphics = ReadGraphics();
OnGraphicsUpdated(new GraphicsEventArgs(graphics));
}
catch (AssettoCorsaNotStartedException)
{ }
}
private void ProcessStaticInfo()
{
if (memoryStatus == AC_MEMORY_STATUS.DISCONNECTED)
return;
try
{
StaticInfo staticInfo = ReadStaticInfo();
OnStaticInfoUpdated(new StaticInfoEventArgs(staticInfo));
}
catch (AssettoCorsaNotStartedException)
{ }
}
/// <summary>
/// Read the current physics data from shared memory
/// </summary>
/// <returns>A Physics object representing the current status, or null if not available</returns>
public Physics ReadPhysics()
{
if (memoryStatus == AC_MEMORY_STATUS.DISCONNECTED || physicsMMF == null)
throw new AssettoCorsaNotStartedException();
using (var stream = physicsMMF.CreateViewStream())
{
using (var reader = new BinaryReader(stream))
{
var size = Marshal.SizeOf(typeof(Physics));
var bytes = reader.ReadBytes(size);
var handle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
var data = (Physics)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(Physics));
handle.Free();
return data;
}
}
}
public Graphics ReadGraphics()
{
if (memoryStatus == AC_MEMORY_STATUS.DISCONNECTED || graphicsMMF == null)
throw new AssettoCorsaNotStartedException();
using (var stream = graphicsMMF.CreateViewStream())
{
using (var reader = new BinaryReader(stream))
{
var size = Marshal.SizeOf(typeof(Graphics));
var bytes = reader.ReadBytes(size);
var handle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
var data = (Graphics)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(Graphics));
handle.Free();
return data;
}
}
}
public StaticInfo ReadStaticInfo()
{
if (memoryStatus == AC_MEMORY_STATUS.DISCONNECTED || staticInfoMMF == null)
throw new AssettoCorsaNotStartedException();
using (var stream = staticInfoMMF.CreateViewStream())
{
using (var reader = new BinaryReader(stream))
{
var size = Marshal.SizeOf(typeof(StaticInfo));
var bytes = reader.ReadBytes(size);
var handle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
var data = (StaticInfo)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(StaticInfo));
handle.Free();
return data;
}
}
}
}
}