Rigidbody 2D goes through collider (not high speed)

Hello,
I have a problem that my 2D Player wants to go through a 2D Collider if I keep holding the "move" button. (I tryed to fix this with a physic material 2D on the player).
When the Player touches a wall and I than hold a key to move, he should just stand there, but he goes through the wall and after a few milliseconds, he goes back where he was, and than does it again untill I release the key. (It looks like a lag)
I don't have this problem with the same but 3D environment.
Does anyone know what to do with it? I've watched many 2D game tutorials, and I didn't see someone has this problem.
Thank you!

 

Can you give me the movement script? I believe it's the problem between transform and addforce.

 

I use simply transform.Translate to move and rb.AddForce for jumping

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class PlayerController : MonoBehaviour
6. {
7.     float Speed;
8.     public float hJump = 6f;
9.     public Rigidbody2D rb;
10.     public bool isGrounded = false;
11.  
12.     public Animator animator;
13.  
14.     void Update()
15.     {
16.         Vector3 movement = new Vector3(Speed, 0, 0); // Move
17.         Jump();
18.  
19.         if (Input.GetKey(KeyCode.D)) // Left
20.         {
21.             Speed = 7f;
22.             transform.position += movement * Time.deltaTime;
23.         }
24.         else if (Input.GetKeyUp(KeyCode.D))
25.         {
26.             Speed = 0;
27.         }
28.  
29.         if (Input.GetKey(KeyCode.A)) // Right
30.         {
31.             Speed = -7f;
32.             transform.position += movement * Time.deltaTime;
33.         }
34.         else if (Input.GetKeyUp(KeyCode.D))
35.         {
36.             Speed = 0;
37.         }
38.  
39.         if (Input.GetKey(KeyCode.A) && Input.GetKey(KeyCode.D)) // Stop
40.         {
41.             Speed = 0;
42.         }
43.  
44.  
45.         if (Speed > 0) // Move Info
46.         {
47.             print("Moves right");
48.             animator.SetInteger("Move", 2);
49.         }
50.         if (Speed < 0)
51.         {
52.             print("Moves left");
53.             animator.SetInteger("Move", 1);
54.         }
55.         if (Speed == 0)
56.         {
57.             print("Not moves");
58.             animator.SetInteger("Move", 0);
59.         }
60.  
61.         if (Input.GetKeyDown(KeyCode.D)) // Rotate Player
62.         {
63.             transform.rotation = Quaternion.Euler(0, 0, 0);
64.         }
65.         if (Input.GetKeyDown(KeyCode.A))
66.         {
67.             transform.rotation = Quaternion.Euler(0, -180, 0);
68.         }
69.     }
70.     void Jump()
71.     {
72.         if (Input.GetKeyDown("space") && isGrounded == true) // Jump
73.         {
74.             rb.AddForce(new Vector2(0, hJump), ForceMode2D.Impulse);
75.         }
76.     }
77.     private void OnCollisionEnter2D(Collision2D collision) // isGrounded
78.     {
79.         if (collision.gameObject.tag == "Ground")
80.         {
81.             isGrounded = true;
82.         }
83.     }
84.     private void OnCollisionExit2D(Collision2D collision)
85.     {
86.         if (collision.gameObject.tag == "Ground")
87.         {
88.             isGrounded = false; ;
89.         }
90.     }
91. }

 

I believe I had the same problem with my first 2d rogue-like prototype.
First of all - change the transform into addforce, that should do the trick.
Second - why do you use vector3 in 2D environment?

 

Yeah, rb.AddForce doing clean, but I wouldn't use it for a 2D platformer game for moving the player, or is there a way to make an instant force without acceleration and slide after releasing a key?
(I didn't know how to use Vector2, but now I googled that and replace it, thx)

 

Thank you!

 

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