Error CS0151

Unity Engine
1

So i’m trying to get an object to move from point A to B and C. The script i’m using I adapted from a Java and turn it to C#. Everything seems fine and I was going to test it for logic errors, but I have an error on line 28,25 or the “switch(currentTarget)” line. I’m not sure what the problem might be but I was wondering if anyone has pointers. Also here’s a link to the script I used, the post by BLF_Games.0

using UnityEngine;
using System.Collections;

public class MoveTest2 : MonoBehaviour 
{
	public Transform targetA;
	public Transform targetB;
	public Transform targetC;
	private Transform currentTarget;
	public float proximity = 1f;
	public float speed = 1f;
	
	
	
	
	// Use this for initialization
	void Start () 
	{
		currentTarget = targetA;
	}
	
	// Update is called once per frame
	void Update () 
	{
		Vector3 Distance = currentTarget.transform.position - transform.position;
		if(Distance.magnitude < proximity)
		{
			switch(currentTarget)
     		 {
        		 case targetA:
           			 currentTarget = targetB;
        		 break;
         		case targetB:
           			 currentTarget = targetC;
         		break;
     		  }
			
		}
	
		transform.position = Vector3.Slerp(transform.position, currentTarget.transform.position, Time.deltaTime * speed);
		transform.LookAt(currentTarget);
	}
}
2

If you posted the entire error, this may have been a tiny bit easier.

Anyways, I had to Google the error, and it’s a compiler error:

The problem here is a sharp difference between UnityScript and C#: implicit conversions and casts. I’m going to assume you’ll have to do a cast, but as I don’t have much experience doing casts/conversions, I’m going to assume it has something to do with “typeOf(Transform)varnamehere as Transform”, although I doubt that is how it exactly should be.

In other words? Let’s see someone else with more experience in this topic comes in :wink:

Edit:
Alternatively, an easier answer would be to compare the transform.position (as I’m assuming the compiler won’t get confused in a Switch statement with a Vector3)
(Also, I said something about the Scripting section- I blame my brain being fried)

3

switch statements only work with simple data types (string, int, float (maybe… never tried float))

A transform is not a simple datatype.

youll have to change it to

if (currentTarget == targetA)
 currentTarget = targetB;
else if (currentTarget == targetB)
 currentTarget = targetA;
4

Switches also work with enums (which, I guess, is a simple data type).

Also, thanks for that info. I wonder how I’ve made it this far without knowing that switches only could be used with those data types :smile:

5

Yeah enums fall under the same bracket, and are often just human readable integers.

6

Thanks for the feedback James, I did what you recommended and changes it to an “else if” list for the order in which it goes to objects, this worked perfectly. Thanks again for your time.