What is wrong with the code I have written for the camera to avoid it from going through object

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I want to make the camera go downwards when its ray gets hit to any object on top.
So the following code is the code I have written for it. It works but it shakes a lot and that is the problem. Pleas any one help me to solve it. I have spend a lot time in it and this is what I got.

using UnityEngine;
using System.Collections;

public class CamRaycast : MonoBehaviour {
	public Transform target;
	public float speed = 1;
	private RaycastHit hit3;
	private RaycastHit hit4;

	// Use this for initialization
	void Start () {
	
	}
	//5 and -45 for backword raycast
	// Update is called once per frame
	void LateUpdate ()
	{
		transform.LookAt (target);//Tracks the player


		Vector3 top = transform.TransformDirection (0f, 26f, 45f) * 10;//Forward Top
		Debug.DrawRay (transform.position, top, Color.green);


		Vector3 back = transform.TransformDirection (0f, 5f, -45f) * 10;//Forward Top
		Debug.DrawRay (transform.position, back, Color.green);


		if ((Physics.Raycast (transform.position, (back), out hit4) && hit4.distance < 2f && transform.position.y > 0.5f) ||
			(Physics.Raycast (transform.position, (top), out hit3) && hit3.distance < 2f && transform.position.y > 0.5f)) {
			transform.Translate (0f, -10f * Time.deltaTime, 0f);
		} 
		else if ((Physics.Raycast (transform.position, (back), out hit4) && hit4.distance > 2 && transform.position.y < 2f)
			|| (Physics.Raycast (transform.position, (top), out hit3) && hit3.distance > 2 && transform.position.y < 2f)) {
			transform.Translate (0f, 10f * Time.deltaTime, 0f);
		} 
		else if ((!Physics.Raycast (transform.position, (back), out hit4) && transform.position.y < 2f) ||
			(!Physics.Raycast (transform.position, (back), out hit4) && transform.position.y < 2f)) 
		{
			transform.Translate (0f, 10f * Time.deltaTime, 0f);
		}
			

	}

}

1 Answer

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using UnityEngine;
using System.Collections;

public class CamRaycast : MonoBehaviour {
public Transform target;
private RaycastHit hit3;
private RaycastHit hit4;
//private RaycastHit hit5;

// Use this for initialization
void Start () {

}
//5 and -45 for backword raycast
// Update is called once per frame
void LateUpdate ()
{
	transform.LookAt (target);//Tracks the player

	//Foward Top
	Vector3 top = transform.TransformDirection (0f, 26f, 45f) * 10;//Forward Top
	Debug.DrawRay (transform.position, top, Color.green);

	//Backward top
	Vector3 back = transform.TransformDirection (0f, 20f, -45f) * 10;//Forward Top
	Debug.DrawRay (transform.position, back, Color.green);
		

	//Foward Top
	if (Physics.Raycast (transform.position, (top), out hit3) && hit3.distance < 2 && transform.position.y > 0.5) {
		transform.Translate (0f, -10f * Time.deltaTime, 0f);
	}
	if (Physics.Raycast (transform.position, (top), out hit3) && hit3.distance > 2 && hit4.distance > 2 & transform.position.y < 2.3f) {
		transform.Translate (0f, 10f * Time.deltaTime, 0f);
	}
	if (!Physics.Raycast (transform.position, (top), out hit3) && hit4.distance > 2 && transform.position.y < 2.3f) {
		transform.Translate (0f, 10f * Time.deltaTime, 0f);
	}

	//Backward top
	if (Physics.Raycast (transform.position, (back), out hit4) && hit4.distance < 2 && transform.position.y > 0.5) {
		transform.Translate (0f, -20f * Time.deltaTime, 0f);
	}
	if (Physics.Raycast (transform.position, (back), out hit4) && hit4.distance > 2 && hit3.distance > 2 && transform.position.y < 2.3f) {
		transform.Translate (0f, 10f * Time.deltaTime, 0f);
	}
	if (!Physics.Raycast (transform.position, (back), out hit4) && hit3.distance > 2 && transform.position.y < 2.3f){
		transform.Translate (0f, 10f * Time.deltaTime, 0f);
	} 
}

void Center ()
{
	RaycastHit hit;
	Vector3 forward = transform.TransformDirection (Vector3.forward) * 10;//FORWARD
	Debug.DrawRay (transform.position, forward, Color.green);

	if (Physics.Raycast (transform.position, (forward), out hit) && hit.collider.gameObject.name != "Player") 
	{
		transform.Translate (0f, 0f, 10f * Time.deltaTime);
	}
	if (Physics.Raycast (transform.position, (forward), out hit) && hit.collider.gameObject.name == "Player" && transform.position.y <= 2.4f && transform.position.z <= 5) 
	{
		transform.Translate (0f, 0f, -10f * Time.deltaTime);
	}
}

}

This is what I wanted

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