hello I am trying to make a racing game for two players (as 1 player is no fun) I just need to make it so that the controls for each player is different as now WASD are the controls for p1 and p2. I have tried to copy the car controller asset that comes with unity but I've had no luck (I am also trying to use only C# so C# would be helpful thanks) what I have so far:

using System; using UnityEngine;

namespace UnityStandardAssets.player2 { internal enum CarDriveType { FrontWheelDrive, RearWheelDrive, FourWheelDrive }

 internal enum SpeedType
 {
     MPH,
     KPH
 }

 public class player2carcontroller : MonoBehaviour
 {
     [SerializeField]
     private CarDriveType m_CarDriveType = CarDriveType.FourWheelDrive;
     [SerializeField]
     private WheelCollider[] m_WheelColliders = new WheelCollider[4];
     [SerializeField]
     private GameObject[] m_WheelMeshes = new GameObject[4];
     [SerializeField]
     private player2wheel[] m_WheelEffects = new player2wheel[4];
     [SerializeField]
     private Vector3 m_CentreOfMassOffset;
     [SerializeField]
     private float m_MaximumSteerAngle;
     [Range(0, 1)]
     [SerializeField]
     private float m_SteerHelper; // 0 is raw physics , 1 the car will grip in the direction it is facing
     [Range(0, 1)]
     [SerializeField]
     private float m_TractionControl; // 0 is no traction control, 1 is full interference
     [SerializeField]
     private float m_FullTorqueOverAllWheels;
     [SerializeField]
     private float m_ReverseTorque;
     [SerializeField]
     private float m_MaxHandbrakeTorque;
     [SerializeField]
     private float m_Downforce = 100f;
     [SerializeField]
     private SpeedType m_SpeedType;
     [SerializeField]
     private float m_Topspeed = 200;
     [SerializeField]
     private static int NoOfGears = 5;
     [SerializeField]
     private float m_RevRangeBoundary = 1f;
     [SerializeField]
     private float m_SlipLimit;
     [SerializeField]
     private float m_BrakeTorque;

     private Quaternion[] m_WheelMeshLocalRotations;
     private Vector3 m_Prevpos, m_Pos;
     private float m_SteerAngle;
     private int m_GearNum;
     private float m_GearFactor;
     private float m_OldRotation;
     private float m_CurrentTorque;
     private Rigidbody m_Rigidbody;
     private const float k_ReversingThreshold = 0.01f;

     public bool Skidding { get; private set; }
     public float BrakeInput { get; private set; }
     public float CurrentSteerAngle { get { return m_SteerAngle; } }
     public float CurrentSpeed { get { return m_Rigidbody.velocity.magnitude * 2.23693629f; } }
     public float MaxSpeed { get { return m_Topspeed; } }
     public float Revs { get; private set; }
     public float AccelInput { get; private set; }

     // Use this for initialization
     private void Start()
     {
         m_WheelMeshLocalRotations = new Quaternion[4];
         for (int i = 0; i < 4; i++)
         {
             m_WheelMeshLocalRotations[i] = m_WheelMeshes[i].transform.localRotation;
         }
         m_WheelColliders[0].attachedRigidbody.centerOfMass = m_CentreOfMassOffset;

         m_MaxHandbrakeTorque = float.MaxValue;

         m_Rigidbody = GetComponent<Rigidbody>();
         m_CurrentTorque = m_FullTorqueOverAllWheels - (m_TractionControl * m_FullTorqueOverAllWheels);
     }


     private void GearChanging()
     {
         float f = Mathf.Abs(CurrentSpeed / MaxSpeed);
         float upgearlimit = (1 / (float)NoOfGears) * (m_GearNum + 1);
         float downgearlimit = (1 / (float)NoOfGears) * m_GearNum;

         if (m_GearNum > 0 && f < downgearlimit)
         {
             m_GearNum--;
         }

         if (f > upgearlimit && (m_GearNum < (NoOfGears - 1)))
         {
             m_GearNum++;
         }
     }


     // simple function to add a curved bias towards 1 for a value in the 0-1 range
     private static float CurveFactor(float factor)
     {
         return 1 - (1 - factor) * (1 - factor);
     }


     // unclamped version of Lerp, to allow value to exceed the from-to range
     private static float ULerp(float from, float to, float value)
     {
         return (1.0f - value) * from + value * to;
     }


     private void CalculateGearFactor()
     {
         float f = (1 / (float)NoOfGears);
         // gear factor is a normalised representation of the current speed within the current gear's range of speeds.
         // We smooth towards the 'target' gear factor, so that revs don't instantly snap up or down when changing gear.
         var targetGearFactor = Mathf.InverseLerp(f * m_GearNum, f * (m_GearNum + 1), Mathf.Abs(CurrentSpeed / MaxSpeed));
         m_GearFactor = Mathf.Lerp(m_GearFactor, targetGearFactor, Time.deltaTime * 5f);
     }


     private void CalculateRevs()
     {
         // calculate engine revs (for display / sound)
         // (this is done in retrospect - revs are not used in force/power calculations)
         CalculateGearFactor();
         var gearNumFactor = m_GearNum / (float)NoOfGears;
         var revsRangeMin = ULerp(0f, m_RevRangeBoundary, CurveFactor(gearNumFactor));
         var revsRangeMax = ULerp(m_RevRangeBoundary, 1f, gearNumFactor);
         Revs = ULerp(revsRangeMin, revsRangeMax, m_GearFactor);
     }


     public void Move(float steering, float accel, float footbrake, float handbrake)
     {
         for (int i = 0; i < 4; i++)
         {
             Quaternion quat;
             Vector3 position;
             m_WheelColliders[i].GetWorldPose(out position, out quat);
             m_WheelMeshes[i].transform.position = position;
             m_WheelMeshes[i].transform.rotation = quat;
         }

         //clamp input values
         steering = Mathf.Clamp(steering, -1, 1);
         AccelInput = accel = Mathf.Clamp(accel, 0, 1);
         BrakeInput = footbrake = -1 * Mathf.Clamp(footbrake, -1, 0);
         handbrake = Mathf.Clamp(handbrake, 0, 1);

         //Set the steer on the front wheels.
         //Assuming that wheels 0 and 1 are the front wheels.
         m_SteerAngle = steering * m_MaximumSteerAngle;
         m_WheelColliders[0].steerAngle = m_SteerAngle;
         m_WheelColliders[1].steerAngle = m_SteerAngle;

         SteerHelper();
         ApplyDrive(accel, footbrake);
         CapSpeed();

         //Set the handbrake.
         //Assuming that wheels 2 and 3 are the rear wheels.
         if (handbrake > 0f)
         {
             var hbTorque = handbrake * m_MaxHandbrakeTorque;
             m_WheelColliders[2].brakeTorque = hbTorque;
             m_WheelColliders[3].brakeTorque = hbTorque;
         }


         CalculateRevs();
         GearChanging();

         AddDownForce();
         CheckForWheelSpin();
         TractionControl();
     }


     private void CapSpeed()
     {
         float speed = m_Rigidbody.velocity.magnitude;
         switch (m_SpeedType)
         {
             case SpeedType.MPH:

                 speed *= 2.23693629f;
                 if (speed > m_Topspeed)
                     m_Rigidbody.velocity = (m_Topspeed / 2.23693629f) * m_Rigidbody.velocity.normalized;
                 break;

             case SpeedType.KPH:
                 speed *= 3.6f;
                 if (speed > m_Topspeed)
                     m_Rigidbody.velocity = (m_Topspeed / 3.6f) * m_Rigidbody.velocity.normalized;
                 break;
         }
     }


     private void ApplyDrive(float accel, float footbrake)
     {

         float thrustTorque;
         switch (m_CarDriveType)
         {
             case CarDriveType.FourWheelDrive:
                 thrustTorque = accel * (m_CurrentTorque / 4f);
                 for (int i = 0; i < 4; i++)
                 {
                     m_WheelColliders[i].motorTorque = thrustTorque;
                 }
                 break;

             case CarDriveType.FrontWheelDrive:
                 thrustTorque = accel * (m_CurrentTorque / 2f);
                 m_WheelColliders[0].motorTorque = m_WheelColliders[1].motorTorque = thrustTorque;
                 break;

             case CarDriveType.RearWheelDrive:
                 thrustTorque = accel * (m_CurrentTorque / 2f);
                 m_WheelColliders[2].motorTorque = m_WheelColliders[3].motorTorque = thrustTorque;
                 break;

         }

         for (int i = 0; i < 4; i++)
         {
             if (CurrentSpeed > 5 && Vector3.Angle(transform.forward, m_Rigidbody.velocity) < 50f)
             {
                 m_WheelColliders[i].brakeTorque = m_BrakeTorque * footbrake;
             }
             else if (footbrake > 0)
             {
                 m_WheelColliders[i].brakeTorque = 0f;
                 m_WheelColliders[i].motorTorque = -m_ReverseTorque * footbrake;
             }
         }
     }


     private void SteerHelper()
     {
         for (int i = 0; i < 4; i++)
         {
             WheelHit wheelhit;
             m_WheelColliders[i].GetGroundHit(out wheelhit);
             if (wheelhit.normal == Vector3.zero)
                 return; // wheels arent on the ground so dont realign the rigidbody velocity
         }

         // this if is needed to avoid gimbal lock problems that will make the car suddenly shift direction
         if (Mathf.Abs(m_OldRotation - transform.eulerAngles.y) < 10f)
         {
             var turnadjust = (transform.eulerAngles.y - m_OldRotation) * m_SteerHelper;
             Quaternion velRotation = Quaternion.AngleAxis(turnadjust, Vector3.up);
             m_Rigidbody.velocity = velRotation * m_Rigidbody.velocity;
         }
         m_OldRotation = transform.eulerAngles.y;
     }


     // this is used to add more grip in relation to speed
     private void AddDownForce()
     {
         m_WheelColliders[0].attachedRigidbody.AddForce(-transform.up * m_Downforce *
                                                      m_WheelColliders[0].attachedRigidbody.velocity.magnitude);
     }


     // checks if the wheels are spinning and is so does three things
     // 1) emits particles
     // 2) plays tiure skidding sounds
     // 3) leaves skidmarks on the ground
     // these effects are controlled through the WheelEffects class
     private void CheckForWheelSpin()
     {
         // loop through all wheels
         for (int i = 0; i < 4; i++)
         {
             WheelHit wheelHit;
             m_WheelColliders[i].GetGroundHit(out wheelHit);

             // is the tire slipping above the given threshhold
             if (Mathf.Abs(wheelHit.forwardSlip) >= m_SlipLimit || Mathf.Abs(wheelHit.sidewaysSlip) >= m_SlipLimit)
             {
                 m_WheelEffects[i].EmitTyreSmoke();

                 // avoiding all four tires screeching at the same time
                 // if they do it can lead to some strange audio artefacts
                 if (!AnySkidSoundPlaying())
                 {
                     m_WheelEffects[i].PlayAudio();
                 }
                 continue;
             }

             // if it wasnt slipping stop all the audio
             if (m_WheelEffects[i].PlayingAudio)
             {
                 m_WheelEffects[i].StopAudio();
             }
             // end the trail generation
             m_WheelEffects[i].EndSkidTrail();
         }
     }

     // crude traction control that reduces the power to wheel if the car is wheel spinning too much
     private void TractionControl()
     {
         WheelHit wheelHit;
         switch (m_CarDriveType)
         {
             case CarDriveType.FourWheelDrive:
                 // loop through all wheels
                 for (int i = 0; i < 4; i++)
                 {
                     m_WheelColliders[i].GetGroundHit(out wheelHit);

                     AdjustTorque(wheelHit.forwardSlip);
                 }
                 break;

             case CarDriveType.RearWheelDrive:
                 m_WheelColliders[2].GetGroundHit(out wheelHit);
                 AdjustTorque(wheelHit.forwardSlip);

                 m_WheelColliders[3].GetGroundHit(out wheelHit);
                 AdjustTorque(wheelHit.forwardSlip);
                 break;

             case CarDriveType.FrontWheelDrive:
                 m_WheelColliders[0].GetGroundHit(out wheelHit);
                 AdjustTorque(wheelHit.forwardSlip);

                 m_WheelColliders[1].GetGroundHit(out wheelHit);
                 AdjustTorque(wheelHit.forwardSlip);
                 break;
         }
     }


     private void AdjustTorque(float forwardSlip)
     {
         if (forwardSlip >= m_SlipLimit && m_CurrentTorque >= 0)
         {
             m_CurrentTorque -= 10 * m_TractionControl;
         }
         else
         {
             m_CurrentTorque += 10 * m_TractionControl;
             if (m_CurrentTorque > m_FullTorqueOverAllWheels)
             {
                 m_CurrentTorque = m_FullTorqueOverAllWheels;
             }
         }
     }


     private bool AnySkidSoundPlaying()
     {
         for (int i = 0; i < 4; i++)
         {
             if (m_WheelEffects[i].PlayingAudio)
             {
                 return true;
             }
         }
         return false;
     }
 }

}

using System; using UnityEngine; using UnityStandardAssets.CrossPlatformInput;

namespace UnityStandardAssets.player2 { [RequireComponent(typeof(player2carcontroller))] public class player2 : MonoBehaviour { private player2carcontroller m_Car; // the car controller we want to use

     private void Awake()
     {
         // get the car controller
         m_Car = GetComponent<player2carcontroller>();
     }


     private void FixedUpdate()
     {
         // pass the input to the car!
         float h = CrossPlatformInputManager.GetAxis("Horizontal2");
         float v = CrossPlatformInputManager.GetAxis("Vertical2");

if !MOBILE_INPUT

        float handbrake = CrossPlatformInputManager.GetAxis("Jump2");
         m_Car.Move(h, v, v, handbrake);

else

        m_Car.Move(h, v, v, 0f);

endif

    }
 }

}

using System; using UnityEngine; using Random = UnityEngine.Random;

namespace UnityStandardAssets.player2 { [RequireComponent(typeof(player2carcontroller))] public class player2audio : MonoBehaviour { // This script reads some of the car's current properties and plays sounds accordingly. // The engine sound can be a simple single clip which is looped and pitched, or it // can be a crossfaded blend of four clips which represent the timbre of the engine // at different RPM and Throttle state.

     // the engine clips should all be a steady pitch, not rising or falling.

     // when using four channel engine crossfading, the four clips should be:
     // lowAccelClip : The engine at low revs, with throttle open (i.e. begining acceleration at very low speed)
     // highAccelClip : Thenengine at high revs, with throttle open (i.e. accelerating, but almost at max speed)
     // lowDecelClip : The engine at low revs, with throttle at minimum (i.e. idling or engine-braking at very low speed)
     // highDecelClip : Thenengine at high revs, with throttle at minimum (i.e. engine-braking at very high speed)

     // For proper crossfading, the clips pitches should all match, with an octave offset between low and high.


     public enum EngineAudioOptions // Options for the engine audio
     {
         Simple, // Simple style audio
         FourChannel // four Channel audio
     }

     public EngineAudioOptions engineSoundStyle = EngineAudioOptions.FourChannel;// Set the default audio options to be four channel
     public AudioClip lowAccelClip;                                              // Audio clip for low acceleration
     public AudioClip lowDecelClip;                                              // Audio clip for low deceleration
     public AudioClip highAccelClip;                                             // Audio clip for high acceleration
     public AudioClip highDecelClip;                                             // Audio clip for high deceleration
     public float pitchMultiplier = 1f;                                          // Used for altering the pitch of audio clips
     public float lowPitchMin = 1f;                                              // The lowest possible pitch for the low sounds
     public float lowPitchMax = 6f;                                              // The highest possible pitch for the low sounds
     public float highPitchMultiplier = 0.25f;                                   // Used for altering the pitch of high sounds
     public float maxRolloffDistance = 500;                                      // The maximum distance where rollof starts to take place
     public float dopplerLevel = 1;                                              // The mount of doppler effect used in the audio
     public bool useDoppler = true;                                              // Toggle for using doppler

     private AudioSource m_LowAccel; // Source for the low acceleration sounds
     private AudioSource m_LowDecel; // Source for the low deceleration sounds
     private AudioSource m_HighAccel; // Source for the high acceleration sounds
     private AudioSource m_HighDecel; // Source for the high deceleration sounds
     private bool m_StartedSound; // flag for knowing if we have started sounds
     private player2carcontroller m_CarController; // Reference to car we are controlling


     private void StartSound()
     {
         // get the carcontroller ( this will not be null as we have require component)
         m_CarController = GetComponent<player2carcontroller>();

         // setup the simple audio source
         m_HighAccel = SetUpEngineAudioSource(highAccelClip);

         // if we have four channel audio setup the four audio sources
         if (engineSoundStyle == EngineAudioOptions.FourChannel)
         {
             m_LowAccel = SetUpEngineAudioSource(lowAccelClip);
             m_LowDecel = SetUpEngineAudioSource(lowDecelClip);
             m_HighDecel = SetUpEngineAudioSource(highDecelClip);
         }

         // flag that we have started the sounds playing
         m_StartedSound = true;
     }


     private void StopSound()
     {
         //Destroy all audio sources on this object:
         foreach (var source in GetComponents<AudioSource>())
         {
             Destroy(source);
         }

         m_StartedSound = false;
     }


     // Update is called once per frame
     private void Update()
     {
         // get the distance to main camera
         float camDist = (Camera.main.transform.position - transform.position).sqrMagnitude;

         // stop sound if the object is beyond the maximum roll off distance
         if (m_StartedSound && camDist > maxRolloffDistance * maxRolloffDistance)
         {
             StopSound();
         }

         // start the sound if not playing and it is nearer than the maximum distance
         if (!m_StartedSound && camDist < maxRolloffDistance * maxRolloffDistance)
         {
             StartSound();
         }

         if (m_StartedSound)
         {
             // The pitch is interpolated between the min and max values, according to the car's revs.
             float pitch = ULerp(lowPitchMin, lowPitchMax, m_CarController.Revs);

             // clamp to minimum pitch (note, not clamped to max for high revs while burning out)
             pitch = Mathf.Min(lowPitchMax, pitch);

             if (engineSoundStyle == EngineAudioOptions.Simple)
             {
                 // for 1 channel engine sound, it's oh so simple:
                 m_HighAccel.pitch = pitch * pitchMultiplier * highPitchMultiplier;
                 m_HighAccel.dopplerLevel = useDoppler ? dopplerLevel : 0;
                 m_HighAccel.volume = 1;
             }
             else
             {
                 // for 4 channel engine sound, it's a little more complex:

                 // adjust the pitches based on the multipliers
                 m_LowAccel.pitch = pitch * pitchMultiplier;
                 m_LowDecel.pitch = pitch * pitchMultiplier;
                 m_HighAccel.pitch = pitch * highPitchMultiplier * pitchMultiplier;
                 m_HighDecel.pitch = pitch * highPitchMultiplier * pitchMultiplier;

                 // get values for fading the sounds based on the acceleration
                 float accFade = Mathf.Abs(m_CarController.AccelInput);
                 float decFade = 1 - accFade;

                 // get the high fade value based on the cars revs
                 float highFade = Mathf.InverseLerp(0.2f, 0.8f, m_CarController.Revs);
                 float lowFade = 1 - highFade;

                 // adjust the values to be more realistic
                 highFade = 1 - ((1 - highFade) * (1 - highFade));
                 lowFade = 1 - ((1 - lowFade) * (1 - lowFade));
                 accFade = 1 - ((1 - accFade) * (1 - accFade));
                 decFade = 1 - ((1 - decFade) * (1 - decFade));

                 // adjust the source volumes based on the fade values
                 m_LowAccel.volume = lowFade * accFade;
                 m_LowDecel.volume = lowFade * decFade;
                 m_HighAccel.volume = highFade * accFade;
                 m_HighDecel.volume = highFade * decFade;

                 // adjust the doppler levels
                 m_HighAccel.dopplerLevel = useDoppler ? dopplerLevel : 0;
                 m_LowAccel.dopplerLevel = useDoppler ? dopplerLevel : 0;
                 m_HighDecel.dopplerLevel = useDoppler ? dopplerLevel : 0;
                 m_LowDecel.dopplerLevel = useDoppler ? dopplerLevel : 0;
             }
         }
     }


     // sets up and adds new audio source to the gane object
     private AudioSource SetUpEngineAudioSource(AudioClip clip)
     {
         // create the new audio source component on the game object and set up its properties
         AudioSource source = gameObject.AddComponent<AudioSource>();
         source.clip = clip;
         source.volume = 0;
         source.loop = true;

         // start the clip from a random point
         source.time = Random.Range(0f, clip.length);
         source.Play();
         source.minDistance = 5;
         source.maxDistance = maxRolloffDistance;
         source.dopplerLevel = 0;
         return source;
     }


     // unclamped versions of Lerp and Inverse Lerp, to allow value to exceed the from-to range
     private static float ULerp(float from, float to, float value)
     {
         return (1.0f - value) * from + value * to;
     }
 }

}

using System.Collections; using UnityEngine;

namespace UnityStandardAssets.player2 { [RequireComponent(typeof(player2audio))] public class player2wheel : MonoBehaviour { public Transform SkidTrailPrefab; public static Transform skidTrailsDetachedParent; public ParticleSystem skidParticles; public bool skidding { get; private set; } public bool PlayingAudio { get; private set; }

     private AudioSource m_AudioSource;
     private Transform m_SkidTrail;
     private WheelCollider m_WheelCollider;


     private void Start()
     {
         skidParticles = transform.root.GetComponentInChildren<ParticleSystem>();

         if (skidParticles == null)
         {
             Debug.LogWarning(" no particle system found on car to generate smoke particles", gameObject);
         }
         else
         {
             skidParticles.Stop();
         }

         m_WheelCollider = GetComponent<WheelCollider>();
         m_AudioSource = GetComponent<AudioSource>();
         PlayingAudio = false;

         if (skidTrailsDetachedParent == null)
         {
             skidTrailsDetachedParent = new GameObject("Skid Trails - Detached").transform;
         }
     }


     public void EmitTyreSmoke()
     {
         skidParticles.transform.position = transform.position - transform.up * m_WheelCollider.radius;
         skidParticles.Emit(1);
         if (!skidding)
         {
             StartCoroutine(StartSkidTrail());
         }
     }


     public void PlayAudio()
     {
         m_AudioSource.Play();
         PlayingAudio = true;
     }


     public void StopAudio()
     {
         m_AudioSource.Stop();
         PlayingAudio = false;
     }


     public IEnumerator StartSkidTrail()
     {
         skidding = true;
         m_SkidTrail = Instantiate(SkidTrailPrefab);
         while (m_SkidTrail == null)
         {
             yield return null;
         }
         m_SkidTrail.parent = transform;
         m_SkidTrail.localPosition = -Vector3.up * m_WheelCollider.radius;
     }


     public void EndSkidTrail()
     {
         if (!skidding)
         {
             return;
         }
         skidding = false;
         m_SkidTrail.parent = skidTrailsDetachedParent;
         Destroy(m_SkidTrail.gameObject, 10);
     }
 }

}