using UnityEngine;
  using System.Collections;
  
  public enum Direction { right, left };
  public class FPSWalker : MonoBehaviour {
     
      public float speed= 3.5f;
      public float jumpSpeed= 8.0f;
      public float gravity= 20.0f;
  
      public static Direction movementDirection = Direction.right;
  
      private Vector3 moveDirection= Vector3.zero;
      private bool  grounded = false;
  
      private Transform transCache;
      private Transform graphicsTransform; 
      CharacterController controller;
  
      private bool hardMovementLock = false;
      public void SetMovementLock(bool value)
      {
          hardMovementLock = value;
      }
  
      Vector3 spawnPos;
  
      void Awake()
      {
          transCache = transform;
          spawnPos = transCache.position;
          controller = GetComponent<CharacterController>();
          graphicsTransform = transCache.FindChild("Graphics");
      }
  
      private float horInput = 0;
      private float verInput = 0;
      private float lastJump = 0;
  
      void  LateUpdate (){
          if (hardMovementLock) return;
          if (grounded)
          {
  
              if (GameManager.AllowInput())
              {
                  horInput = 0;// Input.GetAxisRaw("Vertical");
                  verInput = Input.GetAxisRaw("Horizontal");
                  if (Input.GetKey(KeyCode.RightShift) || Input.GetKey(KeyCode.LeftShift))
                      verInput *= 3;
              }
              else
                  horInput = verInput = 0;
  
              if (verInput > 0)
              {
                  movementDirection = Direction.right;
                  graphicsTransform.localEulerAngles = new Vector3(0, 0,0);
  
              }
              else if (verInput < 0)
              {
                  movementDirection = Direction.left;
                  graphicsTransform.localEulerAngles = new Vector3(0, 180, 0);
              }
              else
              {
                  graphicsTransform.localEulerAngles = new Vector3(0, 90, 0);
              }
                       
  
              // We are grounded, so recalculate movedirection directly from axes
              moveDirection.y = 0;
  
              Vector3 desiredMoveDirection = new Vector3(horInput, 0, verInput);
              desiredMoveDirection *= speed;// Mathf.Clamp(speed, 0, 3.5f);          
              desiredMoveDirection = transform.TransformDirection(desiredMoveDirection);
              
              if(desiredMoveDirection.magnitude > moveDirection.magnitude)
                  //Speed up..slower
                  moveDirection = Vector3.Lerp(moveDirection, desiredMoveDirection, Time.deltaTime*10);
              else
                  moveDirection = Vector3.Lerp(moveDirection, desiredMoveDirection, Time.deltaTime * 40);
               
               //Debug.Log(  Vector3.Magnitude(moveDirection) +" - "+(speed * Time.deltaTime *60) );       
              //TODO: sometimes the movement speed is way too high because of lagspikes..CAP the movedirection SPEED
  
              if (lastJump < Time.realtimeSinceStartup - 0.5f && (Input.GetButton("Jump") || Input.GetKeyDown(KeyCode.UpArrow)) && GameManager.AllowInput())
              {
                  lastJump = Time.realtimeSinceStartup;
                  moveDirection.y = jumpSpeed;
              }
              //lastHorInput = horInput;
              //lastVerInput = verInput;
          }
          else
          {
              //Mid air
              if (GameManager.AllowInput())
              {
                  horInput = 0; // Input.GetAxisRaw("Vertical");
                  verInput = Input.GetAxisRaw("Horizontal");
                  if (horInput == 0 && verInput == 0)
                  {
                      Vector3 desiredMoveDirection = new Vector3(0, moveDirection.y, 0);
                      moveDirection = Vector3.Lerp(moveDirection, desiredMoveDirection, Time.deltaTime * 2);
                  }
              }
          }
  
              // Apply gravity
          moveDirection.y -= gravity * Time.deltaTime; // Mathf.Clamp(moveDirection.y - gravity * Time.deltaTime, -20, 20);
  
          // Move the controller
              CollisionFlags flags= controller.Move(moveDirection * Time.deltaTime);
              grounded = (flags & CollisionFlags.CollidedBelow) != 0;
  
          transCache.position = new Vector3(transCache.position.x, transCache.position.y, spawnPos.z);
  
      }
      
      void Update()
      {
          if (transCache.position.y < -10)
          {
              Died();                  
          }
          
      }
  
      public void Died()
      {
          Reset(); 
      }
  
      public void Reset(){
          moveDirection = Vector3.zero;
          transCache.position = spawnPos;
      }
  
  }