Character Jump

we have our character moving about the way we want it to in orthographic camera view. Here is the coding so far. any help is greatly appreciated. :) PS: I am not using character controller that comes with unity and not using rigidbody

 private var insideObject:Transform;
 
 // The gravity for the character
 var gravity = 20.0;
 
 
 
 function Start(){
     insideObject=transform.Find("Capsule");
     
 }
 function Update () {
     Debug.Log(insideObject.rotation.eulerAngles);
 var dwn = transform.TransformDirection (Vector3.down);
     
 if (Input.GetKeyDown(KeyCode.UpArrow)) {
 
 var fwd = transform.TransformDirection (Vector3.forward);
         if (Physics.Raycast (transform.position, fwd, 1)) {
             print ("There is something in front of the object!");
         }else{
             var forwardPos:Vector3=transform.position + Vector3.forward;
             if (Physics.Raycast (forwardPos,dwn, 1)) {
                 transform.position += Vector3.forward;
             }
             
         }
 }
 
 if (Input.GetKeyDown(KeyCode.DownArrow)) {
 
 
     
         var bk = transform.TransformDirection (Vector3.back);
         if (Physics.Raycast (transform.position, bk, 1)) {
             print ("There is something in front of the object!");
         }else{
             var backPos:Vector3=transform.position + Vector3.back;
             if (Physics.Raycast (backPos,dwn, 1)) {
                 transform.position += Vector3.back;
             }
             
         }
 }
 if (Input.GetKeyDown(KeyCode.RightArrow)) {
 
 
 var r = transform.TransformDirection (Vector3.right);
         if (Physics.Raycast (transform.position, r, 1)) {
             print ("There is something in front of the object!");
         }else{
             var targPos:Vector3=transform.position + Vector3.right;
             if (Physics.Raycast (targPos,dwn, 1)) {
                 transform.position += Vector3.right;
             }
             
         }
         
     insideObject.rotation.eulerAngles.y=90;
 }
 if (Input.GetKeyDown(KeyCode.LeftArrow)) {
 
 var l = transform.TransformDirection (Vector3.left);
         if (Physics.Raycast (transform.position, l, 1)) {
             print ("There is something to the left of the object!");
         }else{
             var leftPos:Vector3=transform.position + Vector3.left;
             if (Physics.Raycast (leftPos,dwn, 1)) {
                 transform.position += Vector3.left;
             }
             
         }
 insideObject.rotation.eulerAngles.y=-90;
 }
 
 
 
 
 }