How can you move the camera one way along the Y axis but not the other?

I need the camera in my game to follow my player up along the Y axis but not follow the player when they move down the Y axis.

This is my current camera script:

Code (CSharp):

1.  
2.     [SerializeField]
3.     private float xMax;
4.  
5.     [SerializeField]
6.     private float yMax;
7.  
8.     [SerializeField]
9.     private float xMin;
10.  
11.     [SerializeField]
12.     private float yMin;
13.  
14.     private Transform target;
15.  
16.  
17.     void Start ()
18.     {
19.         target = GameObject.Find ("Player").transform;
20.     }
21.    
22.  
23.     void LateUpdate ()
24.     {
25.         transform.position = new Vector3(Mathf.Clamp (target.position.x,xMin,xMax), Mathf.Clamp(target.position.y,yMin,yMax), transform.position.z);                                
26.     }

Any help would be appreciated.

 

You mean the camera is only allowed to go up?

 

Indeed

 

You could set yMin to transform.position.y every frame for example

Or, in the y component, you can do

Code (CSharp):

1.  
2. Mathf.Max(
3.     Mathf.Clamp(target.position.y,yMin,yMax),
4.     transform.position.y
5. )
6.  

instead, which will be similar to doing this:

Code (CSharp):

1.  
2. var wantedX = ...;
3. var wantedY = Mathf.Clamp(target.position.y,yMin,yMax);
4. var wantedZ = ...;
5. if(wantedY < transform.position.y) {
6.     // prevent wantedY from being less than transform.position.y
7.     wantedY = transform.position.y;
8. }
9. transform.position = new Vector3(wantedX, wantedY, wantedZ);
10.  

 

Create a variable to store the maximum height reached for the player/camera.

Code (CSharp):

1.  
2. float maxHeight;//maximum height reached
3.  

Now in late update save the highest value for y

Code (CSharp):

1. float currentHeight = target.position.y;
2. if (currentHeight > maxHeight){
3.    maxHeight = currentHeight;
4. }

Then use that value for the y axis of the new camera position

Code (CSharp):

1. Mathf.Clamp (target.position.y,maxHeight,yMax);

 

Thankyou very much <3