object goes through object

Questions & Answers
1

how can i stop the object going through the other object... i have a script that makes my object move around but it still goes through object...what should i do now so i dont make the ojbect go through the other objects... here is the script... 

var speed : float = 5;
var turnSpeed : float = 10;

function Update ()
{
    transform.Translate(Vector3.forward * speed * Time.deltaTime);

    if (Input.GetKey(KeyCode.A))
    {
        transform.Rotate(0, -turnSpeed * Time.deltaTime, 0);
    }

    if (Input.GetKey(KeyCode.D))
    {
        transform.Rotate(0, turnSpeed * Time.deltaTime, 0);
    }
}
2

If you're moving a character maybe you'll find useful to use a Character controller. First you have to attach a Character Controller to your character, then you can use "Move" to move the character around.

GetComponent(CharacterController).Move(aVector);

Anyway through this component's method you can only move the character. To rotate the character you will use the transform of the GameObject. Here you will find more about it.

I hope this will be your solution =)