how to adjust the height of the camera to the terrain

Question

hi guys. I am currently working an rts game.as of now my camera moves when the mouse pointer is scrolling but the problem is that the environment that i am using is a dessert in which the ground is uneven. Can you please tell me how the height of my camera would adjust to my terrain?

The code that i am using is this.

 if (mousePosX < scrollDistance) 
         { 
             transform.Translate(Vector3.right * -scrollSpeed * Time.deltaTime); 
         } 
         
         if (mousePosX >= Screen.width - scrollDistance) 
         { 
             transform.Translate(Vector3.right * scrollSpeed * Time.deltaTime); 
         }
         
         if (mousePosY < scrollDistance) 
         { 
             transform.Translate(transform.forward * -scrollSpeed * Time.deltaTime); 
         } 
         
         if (mousePosY >= Screen.height - scrollDistance) 
         { 
             transform.Translate(transform.forward * scrollSpeed * Time.deltaTime); 
         }

Answer 1

Answer by robertbu · Jan 20, 2014 at 11:35 PM

One solutions is to use 'Terrain.SampleHeight()':

 transform.position.y = Terrain.activeTerrain.SampleHeight(transform.position) + characterAdjust;

'characterAdjust' is the distance the pivot point of your character is above his feet.

Alternately Raycasting() can be used.

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Answer 2

There may be more efficient ways to do this but I would do it this way

Set a max height for your camera

Cast a ray from your camera to the terrain (Probably -Vector3.up)

Get the position of the hit

Lerp your camera's transform.position.y value to hit.position.y + maxheight

 using UnityEngine;
 using System.Collections;
 
 public class NewBehaviourScript : MonoBehaviour 
 {
     //Public Variables
     public GameObject camera;
     //Private Variables
     private float maxHeight = 10;
     // Update is called once per frame
     void Update () 
     {
         RaycastHit hit;
         if(Physics.Raycast(camera.transform.position, Vector3.down, out hit, 100))
         {
             if(hit.name == "Terrain")
             {
                 camera.transform.position = new Vector3(camera.transform.position.x,
                 Mathf.Lerp(camera.transform.position.y,hit.point.y,Time.deltaTime),
                 camera.transform.position.z);
                 }
             }
         }
     }

how to adjust the height of the camera to the terrain

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