migrated script from project to another and getting funny errors

Questions & Answers
1

First, sorry for my messy scripting style, im quite a beginer. Second, i used this script in a project, then the project got too messed up and i started a new project. Now, when i am trying to use tis script and attach it to some car parent, it will not let me do it because “it has not finished on compiling” and i am getting the error like, for example:

Assets/SCRIPTS/General/EnterExitCar.js(89,18): BCE0005: Unknown identifier: ‘Drivetrain’.

Why is the script searching for thos things before the script is being attached to the car parent?

//Enter Exit Car Script By Hotea Florin Ioan - hoteaflorinioan@yahoo.com
    var Car : Transform;
    var Player : Transform;
    var DoorTrigger : Transform;
    var ExitPoint : Transform;
    var PlayerCamera : Camera;
    var CarCamera : Camera;
    var CarCamera1 : Camera;
    private var IsPlayerInTrigger : boolean;
    private var IsPlayerInCar : boolean = false;
    //var BackWheelLeft : WheelCollider;
    //var BackWheelRight : WheelCollider;
    //This two functions will sense when the player is in the door trigger area
    //Aceste doua functii vor simti cand playerul este in zona masinii
    function OnTriggerEnter(Player : Collider) {
        IsPlayerInTrigger = true;
        print("PlayerEnteredTrigger");
    }
     
    function OnTriggerExit(Player : Collider) {
        IsPlayerInTrigger = false;
        print("PlayerExitedTrigger");
    
    }
    
    function  FixedUpdate () {
    
    
    
    // Here will tell them what to do
    // Aici le spunem ce sa faca
    // If we press the desired key and the player is in the trigger area
    // Daca apasam tasta dorita si playerul este in zona masnii
    if (Input.GetKeyDown("f")){ 
    if (IsPlayerInTrigger && !IsPlayerInCar) {
    print("Player Is In Trigger, Will Enter VEHICLE");
    
    // We will DEACTIVATE, atention, not DISABLE the player
    // Vom DEZACTIVA, atentie, DEZACTIVA, nu DEZABILITA playerul
    Player.parent = ExitPoint.transform;
    Player.transform.localPosition = Vector3(0,0,0);
    Player.transform.localRotation = Quaternion.identity;
    Player.active = false;
    PlayerCamera.GetComponent(AudioListener).enabled = false;
    PlayerCamera.enabled = false;
    CarCamera.enabled = true;
    /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
    
    ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
    Car.GetComponent(AudioSource).enabled = true;
    CarCamera.GetComponent(AudioListener).enabled = true;
    IsPlayerInCarTrue();
    Car.GetComponent(CarController).enabled = true;
    Car.GetComponent(Drivetrain).enabled = true;
    //Car.GetComponent(SoundController).enabled = true;
    Car.GetComponent(kmphdisplay).enabled = true;
    //BackWheelLeft.brakeTorque = 0;
    //BackWheelRight.brakeTorque = 0;
    IsPlayerInTrigger = false;
    
    }
    if (IsPlayerInCar) {
    print("Player Will Exit Car NOW!");
    //BackWheelLeft.brakeTorque = 10000;
    //BackWheelRight.brakeTorque = 10000;
    Player.active = true;
    PlayerCamera.GetComponent(AudioListener).enabled = true;
    Player.transform.parent = null;
    Player.transform.localRotation = Quaternion.identity;
    //if (Input.GetKey("v")){
    //		if (CarCamera.enabled == true)  { 
    //		CarCamera1.enabled = true;
    //		CarCamera.enabled = false;
    //		print ("CAMERA1");
    //	}
    //		if (CarCamera.enabled == false){ 
    //			CarCamera1.enabled = false;
    //		CarCamera.enabled = true;
    //		print ("CAMERA2");
    //	}
    //}
    
    Car.GetComponent(AudioSource).enabled = false;
    PlayerCamera.enabled = true;
    CarCamera.enabled = false;
    CarCamera.GetComponent(AudioListener).enabled = false;
    IsPlayerInCarFalse();
    Car.GetComponent(CarController).enabled = false;
    Car.GetComponent(Drivetrain).enabled = false;
    //Car.GetComponent(SoundController).enabled = false;
    Car.GetComponent(kmphdisplay).enabled = false;
    
    
    
    }
    
    }
    }
    
    function IsPlayerInCarFalse() {
    yield WaitForSeconds(0.5);
    IsPlayerInCar = false;
    }
    function IsPlayerInCarTrue() {
    yield WaitForSeconds(0.5);
    IsPlayerInCar = true;
    }
2

If those components don’t exist in your project at the moment, just comment out the lines referring to them. I think unity just checks if there are ANY classes by those names in your project, regardless of what the script will get attached to, and if not, throws an error.

3

for some reason, using

Car.GetComponent(“Drivetrain”).enabled = true;

instead of

Car.GetComponent(Drivetrain).enabled = true;

worked. Have no ideea why, as in the old script, it was written without the “”"