How to change player animation based on mouse position?

I'm wanted to attempt to make a game like "ENTER THE GUNGEON", but I am having trouble with changing the character's animation based on mouse position. If you don't know what I'm talking about, look at GIF. Watch the player as he moves about, changing sprites dependent on where he is shooting, or where the mouse is.

I have blend tree and code, but it only works when i press the keys. I dont know, how to add mouse position. Help me please!

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class Movement : MonoBehaviour
6. {
7.     public float moveSpeed = 3f;
8.  
9.     Animator thisAnim;
10.     float lastx, lasty;
11.  
12.  
13.     void Start ()
14.     {
15.         thisAnim = GetComponent<Animator>();
16.     }
17.    
18.  
19.     void Update ()
20.     {
21.         Move();
22.     }
23.  
24.  
25.     void Move()
26.     {
27.         Vector3 rightMovement = Vector3.right * moveSpeed * Time.deltaTime * Input.GetAxis("Horizontal");
28.         Vector3 upMovement = Vector3.up * moveSpeed * Time.deltaTime * Input.GetAxis("Vertical");
29.         Vector3 heading = Vector3.Normalize(rightMovement + upMovement);
30.  
31.  
32.         transform.position += rightMovement;
33.         transform.position += upMovement;
34.  
35.         UpdateAnimation(heading);
36.     }
37.  
38.     void UpdateAnimation(Vector3 dir)
39.     {
40.         if(dir.x == 0f && dir.y == 0f)
41.         {
42.             thisAnim.SetFloat("LastDirX", lastx);
43.             thisAnim.SetFloat("LastDirY", lasty);
44.             thisAnim.SetBool("Movement", false);
45.         }
46.         else
47.         {
48.             lastx = dir.x;
49.             lasty = dir.y;
50.             thisAnim.SetBool("Movement", true);
51.         }
52.  
53.         thisAnim.SetFloat("DirX", dir.x);
54.         thisAnim.SetFloat("DirY", dir.y);
55.  
56.     }
57.  
58.  
59. }

 

What I did was...

get my mouse position in update:

Code (CSharp):

1. mousepos = Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position;

and used it with my animator:

Code (CSharp):

1.  
2.   if (isAttacking == true)
3.         {
4.             anim.SetFloat("Input_x", mousepos.x);
5.             anim.SetFloat("Input_y", mousepos.y);
6.         }
7.  

Good luck!

 

Thanks, but i do not understand how to use it ... explain more in detail please