Wheel Collider being edited by script but where?

Ok guys.Im trying to improve on this physic script.The car uses unitys wheel colliders.When i press play the wheel models each get a wheel collider if you click that wheel collider while the game is playing you can see that there are some settings in there like sideways friction and forward friction.I wanna edit these settings but i cant find out how the script below is giving the wheel colliders their properties.

This is part 1 of 2 parts of the script(all one script) it was so big i had to split it into 2 posts.

Code (csharp):

1. //maximal corner and braking acceleration capabilities
2. var maxCornerAccel=10.0;
3. var maxBrakeAccel=10.0;
4.  
5. //Mass
6. var mass = 1500;
7.  
8. //coefficient of drag
9. var drag = 0.05;
10.  
11. //center of gravity height - effects tilting in corners
12. var cogY = 0.0;
13.  
14. //engine powerband
15. var minRPM = 700;
16. var maxRPM = 6000;
17.  
18. //maximum Engine Torque
19. var maxTorque = 400;
20.  
21. //automatic transmission shift points
22. var shiftDownRPM = 2500;
23. var shiftUpRPM = 5500;
24.  
25. //gear ratios
26. var gearRatios = [-2.66, 2.66, 1.78, 1.30, 1.00];
27. var finalDriveRatio = 3.4;
28.  
29. //a basic handling modifier:
30. //1.0 understeer
31. //0.0 oversteer
32. var handlingTendency = 0.5;
33.  
34. //graphical wheel objects
35. var wheelFR : Transform;
36. var wheelFL : Transform;
37. var wheelMR : Transform;
38. var wheelML : Transform;
39. var wheelBR : Transform;
40. var wheelBL : Transform;
41.  
42. //suspension setup
43. var suspensionDistance = 0.3;
44. var springs = 1000;
45. var dampers = 200;
46. var wheelRadius = 0.45;
47.  
48. //particle effect for ground dust
49. var groundDustEffect : Transform;
50.  
51. private var queryUserInput = true;
52. private var engineRPM : float;
53. private var steerVelo = 0.0;
54. private var brake = 0.0;
55. private var handbrake = 0.0;
56. private var steer = 0.0;
57. private var motor = 0.0;
58. private var skidTime = 0.0;
59. private var onGround = false;
60. private var cornerSlip = 0.0;
61. private var driveSlip = 0.0;
62. private var wheelRPM : float;
63. private var gear = 1;
64. private var skidmarks;
65. private var wheels : WheelData[];
66. private var wheelY = 0.0;
67.  
68. //Functions to be used by external scripts
69. //controlling the car if required
70. //===================================================================
71.  
72. //return a status string for the vehicle
73. function GetStatus(gui : GUIText) {
74.     gui.text="v="+(rigidbody.velocity.magnitude * 3.6).ToString("f1") + " km/h\ngear= "+gear+"\nrpm= "+engineRPM.ToString("f0");
75. }
76.  
77. //return an information string for the vehicle
78. function GetControlString(gui : GUIText) {
79.     gui.text="Use arrow keys to control the jeep,\nspace for handbrake.";
80. }
81.  
82. //Setup main camera to follow vehicle
83. function SetupCamera() {
84.     if(Camera.main.GetComponent(SmoothFollow)!=null)
85.     {
86.         Camera.main.GetComponent(SmoothFollow).enabled=true;
87.         Camera.main.GetComponent(SmoothFollow).target=transform;
88.         Camera.main.GetComponent(SmoothFollow).distance=7;
89.         Camera.main.GetComponent(SmoothFollow).height=3;
90.     }
91.     Camera.main.transform.parent=null;
92. }
93.  
94. //Enable or disable user controls
95. function SetEnableUserInput(enableInput)
96. {
97.     queryUserInput=enableInput;
98. }
99.  
100. //Car physics
101. //===================================================================
102.  
103. //some whee calculation data
104. class WheelData{
105.     var rotation = 0.0;
106.     var coll : WheelCollider;
107.     var graphic : Transform;
108.     var maxSteerAngle = 0.0;
109.     var lastSkidMark = -1;
110.     var powered = false;
111.     var handbraked = false;
112.     var originalRotation;
113. };
114.  
115. function Start () {
116.     //Destroy existing rigidbody, we don't want anyone to mess with it.
117.     if(rigidbody)
118.         Destroy(rigidbody);
119.    
120.     //setup rigidbody  
121.     gameObject.AddComponent(Rigidbody);
122.     rigidbody.mass = mass;
123.     rigidbody.drag = drag;
124.     rigidbody.angularDrag = 0.8;
125.     rigidbody.centerOfMass.y = cogY;
126.     rigidbody.interpolation = RigidbodyInterpolation.Interpolate;
127.  
128.     //start engine noise
129.     audio.loop = true;
130.     audio.Play();
131.  
132.     //setup wheels
133.     wheels=new WheelData[6];
134.     for(i=0;i<6;i++)
135.         wheels[i] = new WheelData();
136.        
137.     wheels[0].graphic = wheelFL;
138.     wheels[1].graphic = wheelFR;
139.     wheels[2].graphic = wheelML;
140.     wheels[3].graphic = wheelMR;
141.     wheels[4].graphic = wheelBL;
142.     wheels[5].graphic = wheelBR;
143.  
144.     wheels[0].maxSteerAngle=30.0;
145.     wheels[1].maxSteerAngle=30.0;
146.     wheels[2].powered=true;
147.     wheels[3].powered=true;
148.     wheels[4].powered=true;
149.     wheels[5].powered=true;
150.     wheels[2].handbraked=true;
151.     wheels[3].handbraked=true;
152.     wheels[4].handbraked=true;
153.     wheels[5].handbraked=true;
154.  
155.     for(w in wheels)
156.     {
157.         if(w.graphic==null)
158.             Debug.Log("You need to assign all four wheels for the car script!");
159.         if(!w.graphic.transform.IsChildOf(transform))  
160.             Debug.Log("Wheels need to be children of the Object with the car script");
161.            
162.         w.originalRotation=w.graphic.localRotation;
163.  
164.         //create collider
165.         colliderObject = new GameObject("WheelCollider");
166.         colliderObject.transform.parent = transform;
167.         colliderObject.transform.localPosition = w.graphic.localPosition;
168.         w.coll = colliderObject.AddComponent(WheelCollider);
169.         w.coll.suspensionDistance = suspensionDistance;
170.         w.coll.suspensionSpring.spring = springs;
171.         w.coll.suspensionSpring.damper = dampers;
172.         //no grip, as we simulate handling ourselves
173.         w.coll.forwardFriction.stiffness = 0;
174.         w.coll.sidewaysFriction.stiffness = 0;
175.         w.coll.radius = wheelRadius;
176.     }  
177.  
178.     //get wheel height (height forces are applied on)
179.     wheelY=wheels[0].graphic.localPosition.y;
180.    
181.     //find skidmark object
182.     skidmarks = FindObjectOfType(typeof(Skidmarks));
183.    
184.     //shift to first
185.     gear=1;
186. }
187.  
188. //update wheel status
189. function UpdateWheels()
190. {
191.     //calculate handbrake slip for traction gfx
192.     handbrakeSlip=handbrake*rigidbody.velocity.magnitude*0.1;
193.     if(handbrakeSlip>1)
194.         handbrakeSlip=1;
195.        
196.     totalSlip=0.0;
197.     onGround=false;
198.     for(w in wheels)
199.     {      
200.         //rotate wheel
201.         w.rotation += wheelRPM / 60.0 * 360.0* Time.fixedDeltaTime;
202.         w.rotation = Mathf.Repeat(w.rotation, 360.0);      
203.         w.graphic.localRotation= Quaternion.Euler( w.rotation, w.maxSteerAngle*steer, 0.0 ) * w.originalRotation;
204.  
205.         //check if wheel is on ground
206.         if(w.coll.isGrounded)
207.             onGround=true;
208.            
209.         slip = cornerSlip+(w.powered?driveSlip:0.0)+(w.handbraked?handbrakeSlip:0.0);
210.         totalSlip += slip;
211.        
212.         var hit : WheelHit;
213.         var c : WheelCollider;
214.         c = w.coll;
215.         if(c.GetGroundHit(hit))
216.         {
217.             //if the wheel touches the ground, adjust graphical wheel position to reflect springs
218.             w.graphic.localPosition.y-=Vector3.Dot(w.graphic.position-hit.point,transform.up)-w.coll.radius;
219.            
220.  
221.  

 

Part 2

Code (csharp):

1.             //create dust on ground if appropiate
2.             if(slip>0.5  hit.collider.tag=="Dusty")
3.             {
4.                 groundDustEffect.position=hit.point;
5.                 groundDustEffect.particleEmitter.worldVelocity=rigidbody.velocity*0.5;
6.                 groundDustEffect.particleEmitter.minEmission=(slip-0.5)*3;
7.                 groundDustEffect.particleEmitter.maxEmission=(slip-0.5)*3;
8.                 groundDustEffect.particleEmitter.Emit();                               
9.             }
10.            
11.             //and skid marks               
12.             if(slip>0.75  skidmarks != null)
13.                 w.lastSkidMark=skidmarks.AddSkidMark(hit.point,hit.normal,(slip-0.75)*2,w.lastSkidMark);
14.             else
15.                 w.lastSkidMark=-1;
16.         }
17.         else w.lastSkidMark=-1;
18.     }
19.     totalSlip/=wheels.length;
20. }
21.  
22. //Automatically shift gears
23. function AutomaticTransmission()
24. {
25.     if(gear>0)
26.     {
27.         if(engineRPM>shiftUpRPM&gear<gearRatios.length-1)
28.             gear++;
29.         if(engineRPM<shiftDownRPM&gear>1)
30.             gear--;
31.     }
32. }
33.  
34. //Calculate engine acceleration force for current RPM and trottle
35. function CalcEngine() : float
36. {
37.     //no engine when braking
38.     if(brake+handbrake>0.1)
39.         motor=0.0;
40.    
41.     //if car is airborne, just rev engine
42.     if(!onGround)
43.     {
44.         engineRPM += (motor-0.3)*25000.0*Time.deltaTime;
45.         engineRPM = Mathf.Clamp(engineRPM,minRPM,maxRPM);
46.         return 0.0;
47.     }
48.     else
49.     {
50.         AutomaticTransmission();
51.         engineRPM=wheelRPM*gearRatios[gear]*finalDriveRatio;
52.         if(engineRPM<minRPM)
53.             engineRPM=minRPM;
54.         if(engineRPM<maxRPM)
55.         {
56.             //fake a basic torque curve
57.             x = (2*(engineRPM/maxRPM)-1);
58.             torqueCurve = 0.5*(-x*x+2);
59.             torqueToForceRatio = gearRatios[gear]*finalDriveRatio/wheelRadius;
60.             return motor*maxTorque*torqueCurve*torqueToForceRatio;
61.         }
62.         else
63.             //rpm delimiter
64.             return 0.0;
65.     }
66. }
67.  
68. //Car physics
69. //The physics of this car are really a trial-and-error based extension of
70. //basic "Asteriods" physics -- so you will get a pretty arcade-like feel.
71. //This may or may not be what you want, for a more physical approach research
72. //the wheel colliders
73. function HandlePhysics () {
74.     var velo=rigidbody.velocity;
75.     wheelRPM=velo.magnitude*60.0*0.5;
76.  
77.     rigidbody.angularVelocity=new Vector3(rigidbody.angularVelocity.x,0.0,rigidbody.angularVelocity.z);
78.     dir=transform.TransformDirection(Vector3.forward);
79.     flatDir=Vector3.Normalize(new Vector3(dir.x,0,dir.z));
80.     flatVelo=new Vector3(velo.x,0,velo.z);
81.     rev=Mathf.Sign(Vector3.Dot(flatVelo,flatDir));
82.     //when moving backwards or standing and brake is pressed, switch to reverse
83.     if((rev<0||flatVelo.sqrMagnitude<0.5)&brake>0.1)
84.         gear=0;
85.     if(gear==0)
86.     {  
87.         //when in reverse, flip brake and gas
88.         tmp=brake;
89.         brake=motor;
90.         motor=tmp;
91.        
92.         //when moving forward or standing and gas is pressed, switch to drive
93.         if((rev>0||flatVelo.sqrMagnitude<0.5)&brake>0.1)
94.             gear=1;
95.     }
96.     engineForce=flatDir*CalcEngine();
97.     totalbrake=brake+handbrake*0.5;
98.     if(totalbrake>1.0)totalbrake=1.0;
99.     brakeForce=-flatVelo.normalized*totalbrake*rigidbody.mass*maxBrakeAccel;
100.  
101.     flatDir*=flatVelo.magnitude;
102.     flatDir=Quaternion.AngleAxis(steer*30.0,Vector3.up)*flatDir;
103.     flatDir*=rev;
104.     diff=(flatVelo-flatDir).magnitude;
105.     cornerAccel=maxCornerAccel;
106.     if(cornerAccel>diff)cornerAccel=diff;
107.     cornerForce=-(flatVelo-flatDir).normalized*cornerAccel*rigidbody.mass;
108.     cornerSlip=Mathf.Pow(cornerAccel/maxCornerAccel,3);
109.    
110.     rigidbody.AddForceAtPosition(brakeForce+engineForce+cornerForce,transform.position+transform.up*wheelY);
111.    
112.     handbrakeFactor=1+handbrake*4;
113.     if(rev<0)
114.         handbrakeFactor=1;
115.     veloSteer=((15/(2*velo.magnitude+1))+1)*handbrakeFactor;
116.     steerGrip=(1-handlingTendency*cornerSlip);
117.     if(rev*steer*steerVelo<0)
118.         steerGrip=1;
119.     maxRotSteer=2*Time.fixedDeltaTime*handbrakeFactor*steerGrip;
120.     fVelo=velo.magnitude;
121.     veloFactor=fVelo<1.0?fVelo:Mathf.Pow(velo.magnitude,0.3);
122.     steerVeloInput=rev*steer*veloFactor*0.5*Time.fixedDeltaTime*handbrakeFactor;
123.     if(velo.magnitude<0.1)
124.         steerVeloInput=0;
125.     if(steerVeloInput>steerVelo)
126.     {
127.         steerVelo+=0.02*Time.fixedDeltaTime*veloSteer;
128.         if(steerVeloInput<steerVelo)
129.             steerVelo=steerVeloInput;
130.     }
131.     else
132.     {
133.         steerVelo-=0.02*Time.fixedDeltaTime*veloSteer;
134.         if(steerVeloInput>steerVelo)
135.             steerVelo=steerVeloInput;
136.     }
137.     steerVelo=Mathf.Clamp(steerVelo,-maxRotSteer,maxRotSteer); 
138.     transform.Rotate(Vector3.up*steerVelo*57.295788);
139. }
140.  
141. function FixedUpdate () {
142.     //query input axes if necessarry
143.     if(queryUserInput)
144.     {
145.         brake = Mathf.Clamp01(-Input.GetAxis("Vertical"));
146.         handbrake = Input.GetButton("Jump")?1.0:0.0;
147.         steer = Input.GetAxis("Horizontal");
148.         motor = Mathf.Clamp01(Input.GetAxis("Vertical"));
149.     }
150.     else
151.     {
152.         motor = 0;
153.         steer = 0;
154.         brake = 0;
155.         handbrake = 0;
156.     }
157.  
158.  
159.     //if car is on ground calculate handling, otherwise just rev the engine
160.     if(onGround)
161.         HandlePhysics();
162.     else
163.         CalcEngine();  
164.        
165.     //wheel GFX
166.     UpdateWheels();
167.  
168.     //engine sounds
169.     audio.pitch=0.5+0.2*motor+0.8*engineRPM/maxRPM;
170.     audio.volume=0.5+0.8*motor+0.2*engineRPM/maxRPM;
171. }
172.  
173. //Called by DamageReceiver if boat destroyed
174. function Detonate()
175. {
176.     //destroy wheels
177.     for( w in wheels )
178.         w.coll.gameObject.active=false;
179.  
180.     //Mark object no longer a target for homing missiles.
181.     if(tag=="MissileTarget")
182.         tag="";
183.  
184.     //no more car physics
185.     enabled=false;
186. }
187.  
188. @script RequireComponent (AudioSource)

 

Well i couldnt find how the script was adding the properties so i just coded it in my self so i could edit the wheel colliders from the script.I got it fixed.

 

In the first post, where the comment says

Code (csharp):

1. // Setup Wheels

would be my guess.