Slowly orbit camera on keypress

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I used the generic orbit camera script and tweaked it to only rotate 90 degrees when either the left or right arrow key are pressed. It works well, the only thing now is I'd like to get it to kind of swing around as opposed to instantly snapping to the position.

I've read most of the other questions regarding orbiting objects but I'm pretty new to unity and don't really know how to apply them to my situation. Here's the code:

  var target : Transform;
  var targetOffset = Vector3.zero;
  var distance = 4.0;
 
 var lineOfSightMask : LayerMask = 0;
 var closerRadius : float = 0.2;
 var closerSnapLag : float = 0.2;
 
 var xSpeed = 200.0;
 var ySpeed = 80.0;
 
 var yMinLimit = 45;
 var yMaxLimit = 45;
 
 private var currentDistance = 10.0;
 private var x = 0.0;
 private var y = 0.0;
 private var distanceVelocity = 0.0;
 
 function Start () {
     var angles = transform.eulerAngles;
     x = angles.y;
     y = angles.x;
     currentDistance = distance;
     
        if (rigidbody)
         rigidbody.freezeRotation = true;
 }
 
 function LateUpdate () {
     if (target) {
         if(Input.GetKeyDown(KeyCode.LeftArrow)){
             x += 90;
          }
          if(Input.GetKeyDown(KeyCode.RightArrow)){
             x -= 90;
          }
          
          y = ClampAngle(y, yMinLimit, yMaxLimit);
                 
         var rotation = Quaternion.Euler(y, x, 0);
         var targetPos = target.position + targetOffset;
         var direction = rotation * -Vector3.forward;
         
         var targetDistance = AdjustLineOfSight(targetPos, direction);
         currentDistance = Mathf.SmoothDamp(currentDistance, targetDistance, distanceVelocity, closerSnapLag * .3);
         
         transform.rotation = rotation;
         transform.position = targetPos + direction * currentDistance;
     }
 }
 
 function AdjustLineOfSight (target : Vector3, direction : Vector3) : float
 {
     var hit : RaycastHit;
     if (Physics.Raycast (target, direction, hit, distance, lineOfSightMask.value))
         return hit.distance - closerRadius;
     else
         return distance;
 }
 
 static function ClampAngle (angle : float, min : float, max : float) {
     if (angle < -360)
         angle += 360;
     if (angle > 360)
         angle -= 360;
     return Mathf.Clamp (angle, min, max);
 }
 
 @script AddComponentMenu("Third Person Camera/Mouse Orbit"

)

Answer 1

Best Answer

Answer by Sokco816 · Jun 13, 2012 at 07:09 PM

Add this to your camera:

 var object : Transform;
 private var lastRotation : Vector3;
 var rotateSpeed : float;
 private var swing : float;
 var toRight : boolean = false;
 var toLeft : boolean = false;
 
 function Start(){
 lastRotation = transform.eulerAngles;
 }
 
 function Update(){
 //Always look at the object
 transform.LookAt(object);
 
 //rotate 90 degrees to right
 if(Input.GetKeyDown("right") && toLeft==false){
 toRight = true;}
 if(toRight && toLeft==false && Mathf.RoundToInt(transform.eulerAngles.y) != Mathf.RoundToInt(lastRotation.y)-90){
 swing = Mathf.Abs(Mathf.RoundToInt(lastRotation.y)-90-Mathf.RoundToInt(transform.eulerAngles.y));
 transform.RotateAround(object.position, -transform.up, rotateSpeed * swing *Time.deltaTime);}
 if(Mathf.RoundToInt(transform.eulerAngles.y) <= Mathf.RoundToInt(lastRotation.y)-90){
 toRight = false;
 lastRotation = transform.eulerAngles;}
 
 //rotate 90 degrees to left
 if(Input.GetKeyDown("left") && toRight==false){
 toLeft = true;}
 if(toLeft && toRight==false && transform.eulerAngles.y != lastRotation.y+90){
 swing = Mathf.Abs(Mathf.RoundToInt(lastRotation.y)+90-Mathf.RoundToInt(transform.eulerAngles.y));
 transform.RotateAround(object.position, transform.up, rotateSpeed * swing * Time.deltaTime);}
 if(Mathf.RoundToInt(transform.eulerAngles.y) >= Mathf.RoundToInt(lastRotation.y)+90){
 toLeft = false;
 lastRotation = transform.eulerAngles;}
 }

Good luck with the project!

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Falantar · Jun 13, 2012 at 07:13 PM 0

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Works like a charm! $$anonymous$$uch appreciated. I'm going to try and read through it to make sure I understand what's going on.

Sokco816 · Jun 13, 2012 at 07:40 PM 0

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No problem, it's my pleasure!

Falantar · Jun 13, 2012 at 07:51 PM 0

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I noticed that the angle (y-axis) slightly di$$anonymous$$ishes each time the camera rotates. You can test it better by setting the speed up higher, like to about 10. I also noticed that the camera will rotate twice occasionally. Any idea on what might be the issue?

Sokco816 · Jun 14, 2012 at 01:17 AM 0

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The camera sometimes rotates twice because it is moving so quickly, that it actually misses it's goal rotation and has to move on to the next goal rotation. To get it more precise, you can try changing

  if(toLeft && toRight==false && transform.eulerAngles.y < lastRotation.y+90){

to

  if(toLeft && toRight==false && $$anonymous$$athf.RoundToInt(transform.eulerAngles.y) < $$anonymous$$athf.RoundToInt(lastRotation.y)+90){

and

  if(toRight && toLeft==false && $$anonymous$$athf.RoundToInt(transform.eulerAngles.y) > $$anonymous$$athf.RoundToInt(lastRotation.y)-90){

to

  if(toRight && toLeft==false && $$anonymous$$athf.RoundToInt(transform.eulerAngles.y) > $$anonymous$$athf.RoundToInt(lastRotation.y)-90){

Slowly orbit camera on keypress

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