CODEWITHSUNDEEP
c#unity-game-engine
Sleeper
Sleeper

Reputation: 65

Collision not working in 2D

I made 2D wall in Unity, but my character can walk through it. What's wrong? My character has Rigibody2D and BoxCollider2D, wall has box collider. Code of character movement:

Vector2 moveVec = new Vector2(CrossPlatformInputManager.GetAxis("Horizontal"),CrossPlatformInputManager.GetAxis("Vertical"));
    moveVec = moveVec * moveForce;
    transform.Translate (moveVec);

Upvotes: 1

Views: 163

Answers (1)

Programmer
Programmer

Reputation: 125245

My character has Rigibody2D and BoxCollider

If you use Rigibody2D, you must also use BoxCollider2D not BoxCollider. Make sure the wall has it's BoxCollider2D too.

No collision when transform.Translate or transform.position is used to move an Object. If your GameObject has Rigidbody2D attached to it, then it must be moved with Rigidbody2D.velocity, Rigidbody2D.AddForce(Rigidbody2D.AddXXX) or Rigidbody2D.MovePosition.

It is better to do this particular thing in the FixedUpdate() function. Also, I think GetAxisRaw should be used instead of GetAxis so that the player will stop immediately the key/finger is released.

public float speed = 2f;
Rigidbody2D rg2d;

void Start()
{
    rg2d = GetComponent<Rigidbody2D>();
}


void FixedUpdate()
{
    float h = CrossPlatformInputManager.GetAxisRaw("Horizontal");
    float v = CrossPlatformInputManager.GetAxisRaw("Vertical");

    Vector2 tempVect = new Vector2(h, v);
    tempVect = tempVect.normalized * speed * Time.fixedDeltaTime;
    rg2d.MovePosition((Vector2)transform.position + tempVect);
}

You can always decrease/increase the speed if it moves too fast/slow.

Upvotes: 2

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