Ladder help?

So I'm making a ladder for my 2D game, and I spent about 3 hours trying to get it to work. I fixed it by making my player not kinematic, but this is making it phase through the floors whilst in contact with a ladder, is there any way around this?! Here is my code:

Code (csharp):

1. void Update ()
2.     {
3.         if(lBool.contactLadder == true)// If player is in contact with ladder
4.         {
5.             climbing = true;
6.         }
7.         else
8.         {
9.             climbing = false;
10.         }
11.        
12.         if(Input.GetKey(KeyCode.UpArrow)) // If Up Arrow is pressed
13.         {
14.             if(climbing)
15.             {
16.                 transform.Translate(Vector3.up * pVars.climbSpeed * Time.deltaTime); // Move the player up
17.             }
18.         }
19.         if(Input.GetKey(KeyCode.DownArrow)) // If Down Arrow is pressed
20.         {
21.             if(climbing)
22.             {
23.                 transform.Translate(Vector3.down * pVars.climbSpeed * Time.deltaTime); // Move the player down
24.             }
25.         }
26.         if(climbing)
27.         {
28.             rigidbody.isKinematic = true;
29.         }
30.         else
31.         {
32.             rigidbody.isKinematic = false;
33.         }
34.     }

 

Instead of using translate and having to disable the rigidbody, I think you can simply set the velocity of the player instead. Here's the link to the scripting reference. Hope I helped

Note: Make sure the object's isKinematic is false!

 

I'm not sure what the nature of your 2D game is. Here's one way you can do it. I tested it out super quickly and it works well. Rather than disabling the rigidbody component, why not use the functionality of the rigidbody to your advantage?

Code (csharp):

1.  
2.         bool isClimbing = false;
3.    
4.     public float moveSpeed = 5f;
5.  
6.  
7.     //through a trigger or others means set the climb variable to true and gravity to false when you need to climb
8.     public void SetClimb(bool b)
9.     {
10.         isClimbing = b;
11.         rigidbody.useGravity = !b;
12.        
13.     }
14.    
15.     void Update ()
16.     {
17.    
18.         if(isClimbing)
19.          rigidbody.AddForce(  Input.GetAxis ("Vertical") * moveSpeed *Vector3.up ) ;
20.        
21.        
22.         rigidbody.AddForce(  Input.GetAxis ("Horizontal") * moveSpeed *Vector3.right ) ;
23.        
24.     }

Here I'm using the addforce function of the rigidbody. You can find out more here:
http://docs.unity3d.com/Documentation/ScriptReference/Rigidbody.AddForce.html

Also, I find it much more streamlined to use the Input.GetAxis, which can be tweaked further in the input manager:
http://docs.unity3d.com/Documentation/ScriptReference/Input.GetAxis.html