void UpdateTireMarks(WheelData wheelData, TireFxData fxData)
{
// If we are already drawing marks to this wheel, wait before updating.
if (fxData.lastMarksIndex != -1 && wheelData.grounded && fxData.marksDelta < updateInterval)
{
fxData.marksDelta += Time.deltaTime;
return;
}
// deltaT = time since last mark for this wheel
float deltaT = fxData.marksDelta;
if (deltaT == 0.0f)
deltaT = Time.deltaTime;
fxData.marksDelta = 0.0f;
// Verify: Should we put marks?
// - Grounded
// - Contacted object has not a rigidbody (assumed to be static)
if (!wheelData.grounded || wheelData.hit.collider.attachedRigidbody != null)
{
fxData.lastMarksIndex = -1;
return;
}
// Have we changed renderer? If so, start a new tread
TireMarksRenderer marksRenderer =
wheelData.groundMaterial != null? wheelData.groundMaterial.marksRenderer : null;
if (marksRenderer != fxData.lastRenderer)
{
fxData.lastRenderer = marksRenderer;
fxData.lastMarksIndex = -1;
}
if (marksRenderer != null)
{
float pressureRatio = Mathf.Clamp01(intensity * wheelData.downforceRatio * 0.5f);
float skidRatio = Mathf.InverseLerp(minSlip, maxSlip, wheelData.combinedTireSlip);
fxData.lastMarksIndex = marksRenderer.AddMark(
wheelData.rayHit.point - wheelData.transform.right * wheelData.collider.center.x + wheelData.velocity * deltaT,
wheelData.rayHit.normal,
pressureRatio,
skidRatio,
tireWidth,
fxData.lastMarksIndex
);
}
}
void OnEnable()
{
// Cache/find components and configure rigidbody
m_transform = GetComponent<Transform>();
m_rigidbody = GetComponent<Rigidbody>();
m_groundMaterialManager = FindObjectOfType<GroundMaterialManager>();
FindColliders();
m_rigidbody.maxAngularVelocity = 14.0f;
m_rigidbody.maxDepenetrationVelocity = 8.0f;
if (centerOfMass)
m_rigidbody.centerOfMass = m_transform.InverseTransformPoint(centerOfMass.position);
if (wheels.Length == 0)
{
Debug.LogWarning("The wheels property is empty. You must configure wheels and WheelColliders first. Component is disabled.");
enabled = false;
return;
}
// Initialize wheel data
m_usesHandbrake = false;
m_wheelData = new WheelData[wheels.Length];
for (int i = 0; i < m_wheelData.Length; i++)
{
m_wheelData[i] = new WheelData();
m_wheelData[i].wheel = wheels[i];
if (wheels[i].wheelCollider == null)
Debug.LogError("A WheelCollider is missing in the list of wheels for this vehicle: " + gameObject.name);
m_wheelData[i].collider = wheels[i].wheelCollider;
m_wheelData[i].transform = wheels[i].wheelCollider.transform;
if (wheels[i].handbrake) m_usesHandbrake = true;
// Calculate the distance of the force app point wrt the center of mass
UpdateWheelCollider(m_wheelData[i].collider);
m_wheelData[i].forceDistance = GetWheelForceDistance(m_wheelData[i].collider);
}
// Configure WheelColliders
WheelCollider someWheel = GetComponentInChildren<WheelCollider>();
someWheel.ConfigureVehicleSubsteps(1000.0f, 1, 1);
foreach (Wheel wheel in wheels)
{
SetupWheelCollider(wheel.wheelCollider);
UpdateWheelCollider(wheel.wheelCollider);
}
// Initialize other data
m_lastImpactedMaterial = new PhysicMaterial(); // A new reference to ensure cache missmatch at the first query
}
float FixSteerAngle(WheelData wd, float inputSteerAngle)
{
// World-space forward vector for the wheel in the desired steer angle
Quaternion steerRot = Quaternion.AngleAxis(inputSteerAngle, wd.transform.up);
Vector3 wheelForward = steerRot * wd.transform.forward;
// Stupid PhysX Vehicle SDK assumes all wheels point in the same direction as the rigidbody.
//
// Step 1: Project the forward direction into the rigidbody's XZ plane.
// This is the vector we want our wheel to point to as seen from the rigidbody.
Vector3 rbWheelForward = wheelForward - Vector3.Project(wheelForward, m_transform.up);
// Step 2: Calculate the final steer angle to feed PhysX with.
return Vector3.Angle(m_transform.forward, rbWheelForward) * Mathf.Sign(Vector3.Dot(m_transform.right, rbWheelForward));
}
void ComputeTireForces(WheelData wd)
{
// Throttle for this wheel
float wheelThrottleInput = wd.wheel.drive? throttleInput : 0.0f;
float wheelMaxDriveSlip = maxDriveSlip;
if (Mathf.Sign(wheelThrottleInput) != Mathf.Sign(wd.localVelocity.y))
wheelMaxDriveSlip -= wd.localVelocity.y * Mathf.Sign(wheelThrottleInput);
// Calculate the combined brake out of brake and handbrake for this wheel
float wheelBrakeInput = 0.0f;
float wheelBrakeRatio = 0.0f;
float wheelBrakeSlip = 0.0f;
if (wd.wheel.brake && wd.wheel.handbrake)
{
wheelBrakeInput = Mathf.Max(brakeInput, handbrakeInput);
if (handbrakeInput >= brakeInput)
ComputeBrakeValues(wd, handbrakeMode, maxHandbrakeSlip, maxHandbrakeRatio, out wheelBrakeSlip, out wheelBrakeRatio);
else
ComputeBrakeValues(wd, brakeMode, maxBrakeSlip, maxBrakeRatio, out wheelBrakeSlip, out wheelBrakeRatio);
}
else
if (wd.wheel.brake)
{
wheelBrakeInput = brakeInput;
ComputeBrakeValues(wd, brakeMode, maxBrakeSlip, maxBrakeRatio, out wheelBrakeSlip, out wheelBrakeRatio);
}
else
if (wd.wheel.handbrake)
{
wheelBrakeInput = handbrakeInput;
ComputeBrakeValues(wd, handbrakeMode, maxHandbrakeSlip, maxHandbrakeRatio, out wheelBrakeSlip, out wheelBrakeRatio);
}
// Combine throttle and brake inputs. There can be only one.
// (Not really - EVP uses this simplication. VPP combines throttle and brake in the
// physically correct way)
float absThrottleInput = Mathf.Abs(wheelThrottleInput);
if (absThrottleInput >= wheelBrakeInput)
{
wd.finalInput = (absThrottleInput - wheelBrakeInput) * Mathf.Sign(wheelThrottleInput);
wd.isBraking = false;
}
else
{
wd.finalInput = wheelBrakeInput - absThrottleInput;
wd.isBraking = true;
}
// Calculate demanded force coming from the wheel's axle
float demandedForce;
if (wd.isBraking)
demandedForce = wd.finalInput * maxBrakeForce;
else
demandedForce = ComputeDriveForce(wd.finalInput * maxDriveForce, maxDriveForce, wd.grounded);
// ABS and TC limits
if (wd.grounded)
{
if (tcEnabled)
wheelMaxDriveSlip = Mathf.Lerp(wheelMaxDriveSlip, 0.1f, tcRatio);
if (absEnabled && brakeInput > handbrakeInput)
{
wheelBrakeSlip = Mathf.Lerp(wheelBrakeSlip, 0.1f, absRatio);
wheelBrakeRatio = Mathf.Lerp(wheelBrakeRatio, wheelBrakeRatio * 0.1f, absRatio);
}
}
// Calculate tire forces
if (wd.grounded)
{
wd.tireSlip.x = wd.localVelocity.x;
wd.tireSlip.y = wd.localVelocity.y - wd.angularVelocity * wd.collider.radius;
// Get the ground properties
float groundGrip;
float groundDrag;
if (wd.groundMaterial != null)
{
groundGrip = wd.groundMaterial.grip;
groundDrag = wd.groundMaterial.drag;
}
else
{
groundGrip = defaultGroundGrip;
groundDrag = defaultGroundDrag;
}
// Ensure there's longitudinal slip enough for the demanded longitudinal force
float forceMagnitude = tireFriction * wd.downforce * groundGrip;
float minSlipY;
if (wd.isBraking)
{
float wheelMaxBrakeSlip = Mathf.Max(Mathf.Abs(wd.localVelocity.y * wheelBrakeRatio), wheelBrakeSlip);
minSlipY = Mathf.Clamp(Mathf.Abs(demandedForce * wd.tireSlip.x) / forceMagnitude, 0.0f, wheelMaxBrakeSlip);
}
else
{
minSlipY = Mathf.Min(Mathf.Abs(demandedForce * wd.tireSlip.x) / forceMagnitude, wheelMaxDriveSlip);
if (demandedForce != 0.0f && minSlipY < 0.1f) minSlipY = 0.1f;
}
if (Mathf.Abs(wd.tireSlip.y) < minSlipY) wd.tireSlip.y = minSlipY * Mathf.Sign(wd.tireSlip.y);
// Compute combined tire forces
Vector2 rawTireForce = -forceMagnitude * wd.tireSlip.normalized;
rawTireForce.x = Mathf.Abs(rawTireForce.x);
rawTireForce.y = Mathf.Abs(rawTireForce.y);
// Sideways force
wd.tireForce.x = Mathf.Clamp(wd.localRigForce.x, -rawTireForce.x, +rawTireForce.x);
// Forward force
if (wd.isBraking)
{
float maxFy = Mathf.Min(rawTireForce.y, demandedForce);
wd.tireForce.y = Mathf.Clamp(wd.localRigForce.y, -maxFy, +maxFy);
}
else
{
wd.tireForce.y = Mathf.Clamp(demandedForce, -rawTireForce.y, +rawTireForce.y);
}
// Drag force as for the surface resistance
wd.dragForce = -(forceMagnitude * wd.localVelocity.magnitude * groundDrag * 0.001f) * wd.localVelocity;
}
else
{
wd.tireSlip = Vector2.zero;
wd.tireForce = Vector2.zero;
wd.dragForce = Vector2.zero;
}
// Compute angular velocity for the next step
float slipToForce = wd.isBraking? brakeForceToMaxSlip : driveForceToMaxSlip;
float slipRatio = Mathf.Clamp01((Mathf.Abs(demandedForce) - Mathf.Abs(wd.tireForce.y)) / slipToForce);
float slip;
if (wd.isBraking)
slip = Mathf.Clamp(-slipRatio * wd.localVelocity.y * wheelBrakeRatio, -wheelBrakeSlip, wheelBrakeSlip);
else
slip = slipRatio * wheelMaxDriveSlip * Mathf.Sign(demandedForce);
wd.angularVelocity = (wd.localVelocity.y + slip) / wd.collider.radius;
}
void ComputeExtendedTireData(WheelData wd, float referenceDownforce)
{
wd.combinedTireSlip = ComputeCombinedSlip(wd.localVelocity, wd.tireSlip);
wd.downforceRatio = wd.hit.force / referenceDownforce;
}
// Calculate brake ratio and slip based on the current brake method
void ComputeBrakeValues(WheelData wd, BrakeMode mode, float maxSlip, float maxRatio, out float brakeSlip, out float brakeRatio)
{
if (mode == BrakeMode.Slip)
{
brakeSlip = maxSlip;
brakeRatio = 1.0f;
}
else
{
brakeSlip = Mathf.Abs(wd.localVelocity.y);
brakeRatio = maxRatio;
}
}
void ApplyTireForces(WheelData wd)
{
if (wd.grounded)
{
if (!disallowRuntimeChanges)
wd.forceDistance = GetWheelForceDistance(wd.collider);
Vector3 sidewaysForcePoint = wd.hit.point + wd.transform.up * antiRoll * wd.forceDistance;
Vector3 forwardForce = wd.hit.forwardDir * (wd.tireForce.y + wd.dragForce.y);
Vector3 sidewaysForce = wd.hit.sidewaysDir * (wd.tireForce.x + wd.dragForce.x);
if (wd.wheel.steer)
{
if (wd.steerAngle != 0.0f && Mathf.Sign(wd.steerAngle) != Mathf.Sign(wd.tireSlip.x))
{
sidewaysForcePoint += wd.hit.forwardDir * steeringOverdrive;
}
}
m_rigidbody.AddForceAtPosition(forwardForce, wd.hit.point);
m_rigidbody.AddForceAtPosition(sidewaysForce, sidewaysForcePoint);
Rigidbody otherRb = wd.hit.collider.attachedRigidbody;
if (otherRb != null && !otherRb.isKinematic)
{
otherRb.AddForceAtPosition(-forwardForce, wd.hit.point);
otherRb.AddForceAtPosition(-sidewaysForce, sidewaysForcePoint);
}
}
}
void UpdateWheelSleep(WheelData wd)
{
if (wd.localVelocity.magnitude < sleepVelocity
&& Time.time-m_lastStrongImpactTime > 0.2f
&& (wd.isBraking && wd.finalInput > 0.01f || m_usesHandbrake && handbrakeInput > 0.1f)
)
{
wd.collider.motorTorque = 0.0f;
}
else
{
wd.collider.motorTorque = 0.00001f;
}
}
// Set the visual transform for the wheel
void UpdateTransform(WheelData wd)
{
if (wd.wheel.wheelTransform != null)
{
wd.angularPosition = (wd.angularPosition + wd.angularVelocity * Time.deltaTime) % (Mathf.PI*2.0f);
// Wheel position
float elongation;
if (wheelPositionMode == PositionMode.Fast)
{
elongation = wd.collider.suspensionDistance * (1.0f - wd.suspensionCompression) + wd.collider.radius * 0.05f;
wd.rayHit.point = wd.hit.point;
wd.rayHit.normal = wd.hit.normal;
}
else
{
if (Physics.Raycast(wd.origin, -wd.transform.up, out wd.rayHit, (wd.collider.suspensionDistance + wd.collider.radius)))
elongation = wd.rayHit.distance - wd.collider.radius * 0.95f;
else
elongation = wd.collider.suspensionDistance + wd.collider.radius * 0.05f;
}
Vector3 wheelPosition = wd.transform.position - wd.transform.up * elongation;
wd.wheel.wheelTransform.position = wheelPosition;
// Wheel rotation
wd.wheel.wheelTransform.rotation = wd.transform.rotation * Quaternion.Euler(wd.angularPosition * Mathf.Rad2Deg, wd.steerAngle, 0.0f);
}
else
{
wd.rayHit.point = wd.hit.point;
wd.rayHit.normal = wd.hit.normal;
}
}
void UpdateSuspension(WheelData wd)
{
// Retrieve the wheel's contact point
wd.grounded = wd.collider.GetGroundHit(out wd.hit);
wd.origin = wd.transform.TransformPoint(wd.collider.center);
if (wd.grounded && !disableWheelHitCorrection)
{
RaycastHit rayHit;
if (Physics.Raycast(wd.origin, -wd.transform.up, out rayHit, wd.collider.suspensionDistance + wd.collider.radius))
{
wd.hit.point = rayHit.point;
wd.hit.normal = rayHit.normal;
}
}
// Suspension compression and downforce
if (wd.grounded)
{
wd.suspensionCompression = 1.0f - (-wd.transform.InverseTransformPoint(wd.hit.point).y - wd.collider.radius) / wd.collider.suspensionDistance;
if (wd.hit.force < 0.0f) wd.hit.force = 0.0f;
wd.downforce = wd.hit.force;
}
else
{
wd.suspensionCompression = 0.0f;
wd.downforce = 0.0f;
}
}
//----------------------------------------------------------------------------------------------
void UpdateSteering(WheelData wd)
{
if (wd.wheel.steer)
{
if (espEnabled && m_speed > 0.0f)
{
float forwardSpeed = m_speed * espRatio;
float maxEspAngle = Mathf.Asin(Mathf.Clamp01(3.0f / forwardSpeed)) * Mathf.Rad2Deg;
maxEspAngle = Mathf.Max(maxEspAngle, m_speedAngle);
wd.steerAngle = Mathf.Clamp(maxSteerAngle * steerInput, -maxEspAngle, +maxEspAngle);
}
else
{
wd.steerAngle = maxSteerAngle * steerInput;
}
}
else
{
wd.steerAngle = 0.0f;
}
wd.collider.steerAngle = disableSteerAngleCorrection? wd.steerAngle : FixSteerAngle(wd, wd.steerAngle);
}
void UpdateLocalFrame(WheelData wd)
{
// Speed of the wheel rig
if (!wd.grounded)
{
// Ensure continuity even when the wheel is lifted
wd.hit.point = wd.origin - wd.transform.up * (wd.collider.suspensionDistance + wd.collider.radius);
wd.hit.normal = wd.transform.up;
wd.hit.collider = null;
}
Vector3 wheelV = m_rigidbody.GetPointVelocity(wd.hit.point);
if (wd.hit.collider != null)
{
Rigidbody rb = wd.hit.collider.attachedRigidbody;
if (rb != null) wheelV -= rb.GetPointVelocity(wd.hit.point);
}
wd.velocity = wheelV - Vector3.Project(wheelV, wd.hit.normal);
wd.localVelocity.y = Vector3.Dot(wd.hit.forwardDir, wd.velocity);
wd.localVelocity.x = Vector3.Dot(wd.hit.sidewaysDir, wd.velocity);
// Forces related to the wheel rig
if (!wd.grounded)
{
wd.localRigForce = Vector2.zero;
return;
}
Vector2 localSurfaceForce;
float surfaceForceRatio = Mathf.InverseLerp(1.0f, 0.25f, wd.velocity.sqrMagnitude);
if (surfaceForceRatio > 0.0f)
{
Vector3 surfaceForce;
float upNormal = Vector3.Dot(Vector3.up, wd.hit.normal);
if (upNormal > 0.000001f)
{
Vector3 downForceUp = Vector3.up * wd.hit.force / upNormal;
surfaceForce = downForceUp - Vector3.Project(downForceUp, wd.hit.normal);
}
else
{
surfaceForce = Vector3.up * 100000.0f;
}
localSurfaceForce.y = Vector3.Dot(wd.hit.forwardDir, surfaceForce);
localSurfaceForce.x = Vector3.Dot(wd.hit.sidewaysDir, surfaceForce);
localSurfaceForce *= surfaceForceRatio;
}
else
{
localSurfaceForce = Vector2.zero;
}
float estimatedSprungMass = Mathf.Clamp(wd.hit.force / -Physics.gravity.y, 0.0f, wd.collider.sprungMass) * 0.5f;
Vector2 localVelocityForce = -estimatedSprungMass * wd.localVelocity / Time.deltaTime;
wd.localRigForce = localVelocityForce + localSurfaceForce;
}
void UpdateGroundMaterial(WheelData wd)
{
if (wd.grounded)
UpdateGroundMaterialCached(wd.hit.collider.sharedMaterial, ref wd.lastPhysicMaterial, ref wd.groundMaterial);
}
void UpdateTireParticles(WheelData wheelData, TireFxData fxData)
{
if (!wheelData.grounded)
{
// Not grounded: clear particle state and decrement the particle slip time
fxData.lastParticleTime = -1.0f;
fxData.slipTime -= Time.deltaTime;
if (fxData.slipTime < 0.0f) fxData.slipTime = 0.0f;
return;
}
TireParticleEmitter particleEmitter =
wheelData.groundMaterial != null? wheelData.groundMaterial.particleEmitter : null;
if (particleEmitter != fxData.lastEmitter)
{
fxData.lastEmitter = particleEmitter;
fxData.lastParticleTime = -1.0f;
}
if (particleEmitter != null)
{
Vector3 position = wheelData.rayHit.point + wheelData.transform.up * tireWidth * 0.5f;
Vector3 positionRandom = Random.insideUnitSphere * tireWidth;
float pressureRatio = Mathf.Clamp01(wheelData.downforceRatio);
float skidRatio = Mathf.InverseLerp(minSlip, maxSlip, wheelData.combinedTireSlip);
// Emulate tire "heating" as for the time it has been skidding over the minSlip value.
// Tire will "heat" at full rate when completely skidding at full pressure.
if (skidRatio > 0.0f && particleEmitter.mode == TireParticleEmitter.Mode.PressureAndSkid)
fxData.slipTime += Time.deltaTime * skidRatio * pressureRatio;
else
fxData.slipTime -= Time.deltaTime;
fxData.slipTime = Mathf.Clamp(fxData.slipTime, minIntensityTime, limitIntensityTime);
float slipTimeRatio = Mathf.InverseLerp(minIntensityTime, maxIntensityTime, fxData.slipTime);
fxData.lastParticleTime = particleEmitter.EmitParticle(
position + positionRandom,
wheelData.velocity,
wheelData.tireSlip.y * wheelData.transform.forward,
pressureRatio,
skidRatio * slipTimeRatio,
fxData.lastParticleTime
);
}
else
{
// No particles set up for this material. Assume is not a "heating material"
// and "cold down" the tire surface.
fxData.slipTime -= Time.deltaTime;
if (fxData.slipTime < 0.0f) fxData.slipTime = 0.0f;
}
}
void DrawWheelGizmos(WheelData wd)
{
RaycastHit rayHit;
if (wd.grounded && Physics.Raycast(wd.transform.TransformPoint(wd.collider.center), -wd.transform.up, out rayHit, (wd.collider.suspensionDistance + wd.collider.radius)))
{
Debug.DrawLine(rayHit.point, rayHit.point + wd.transform.up * (wd.downforce / 10000.0f), wd.suspensionCompression > 0.99f? Color.magenta : Color.white);
CommonTools.DrawCrossMark(wd.transform.position, wd.transform, Color.Lerp(Color.green, Color.gray, 0.5f));
Vector3 forcePoint = rayHit.point + wd.transform.up * target.antiRoll * wd.forceDistance;
if (wd.wheel.steer)
{
if (wd.steerAngle != 0.0f && Mathf.Sign(wd.steerAngle) != Mathf.Sign(wd.tireSlip.x))
forcePoint += wd.hit.forwardDir * target.steeringOverdrive;
}
CommonTools.DrawCrossMark(forcePoint, wd.transform, Color.Lerp(Color.yellow, Color.gray, 0.5f));
Vector3 tireForce = wd.hit.forwardDir * wd.tireForce.y + wd.hit.sidewaysDir * wd.tireForce.x;
Debug.DrawLine(forcePoint, forcePoint + CommonTools.Lin2Log(tireForce) * 0.1f, Color.green);
Vector3 tireSlip = wd.hit.forwardDir * wd.tireSlip.y + wd.hit.sidewaysDir * wd.tireSlip.x;
Debug.DrawLine(rayHit.point, rayHit.point + CommonTools.Lin2Log(tireSlip) * 0.5f, Color.cyan);
// Vector3 wheelVelocity = wd.hit.forwardDir * wd.localVelocity.y + wd.hit.sidewaysDir * wd.localVelocity.x;
// Debug.DrawLine(rayHit.point, rayHit.point + CommonTools.Lin2Log(wheelVelocity) * 0.5f, Color.Lerp(Color.blue, Color.white, 0.5f));
// Vector3 rigForce = wd.hit.sidewaysDir * wd.localRigForce.x + wd.hit.forwardDir * wd.localRigForce.y;
// Debug.DrawLine(rayHit.point, rayHit.point + rigForce / 10000.0f, Color.Lerp(Color.red, Color.gray, 0.5f));
}
}
string GetWheelTelemetry(WheelData wd, ref float suspensionForce)
{
bool sleeping = !(wd.collider.motorTorque > 0.0f);
string text = string.Format("{0,-10}{1}{2,5:0.} rpm ", wd.collider.gameObject.name, sleeping? "×" : ":", wd.angularVelocity * VehicleController.WToRpm);
if (wd.grounded)
{
text += string.Format("C:{0,5:0.00} ", wd.suspensionCompression);
// text += string.Format("Vx:{0,6:0.00} Vy:{1,6:0.00} ", wd.localVelocity.x, wd.localVelocity.y);
switch (dataMode)
{
case DataMode.TireSlipAndForce:
text += string.Format("F:{0,5:0.} ", wd.downforce);
text += string.Format("Sx:{0,6:0.00} Sy:{1,6:0.00} ", wd.tireSlip.x, wd.tireSlip.y);
text += string.Format("Fx:{0,5:0.} Fy:{1,5:0.} ", wd.tireForce.x, wd.tireForce.y);
break;
case DataMode.GroundMaterial:
// text += string.Format("Sa:{0,5:0.0} ", wd.GetSlipAngle() * Mathf.Rad2Deg);
// text += string.Format("Slip:{0,4:0.0} ", wd.GetCombinedSlip());
text += string.Format("F:{0,4:0.0} % ", wd.downforceRatio);
text += string.Format("Slip:{0,4:0.0} ", wd.combinedTireSlip);
if (wd.groundMaterial != null)
{
text += string.Format("Grip:{0,4:0.0} Drag:{1,4:0.0} [{2}]",
wd.groundMaterial.grip, wd.groundMaterial.drag,
wd.groundMaterial.physicMaterial != null? wd.groundMaterial.physicMaterial.name : "no mat");
}
break;
}
suspensionForce += wd.hit.force;
}
else
{
text += string.Format("C: 0.-- ");
}
return text + "\n";
}