[2D] Sprite flickers/is choppy when moving

Question

The movement of my player sprite is very choppy, almost as if it "flickers." The sprite is 16x24 and I have tried just about everything I can to fix this issue, I have searched everywhere.

The camera is orthographic, size 100,
The player sprite is 16x24, PPU 1, point filter, 16-bits format
The player gameObject is scale 1,1,1
Rigidbody 2d, interpolate none, is NOT kinematic
Quality settings: anisotropic textures disabled, anti aliasing disabled, v sync count every v blank

Here's the movement code that is applied to the player (commented out parts of other solutions I tried for the movement)

         if(Input.GetKey(KeyCode.A))
         {
             //Vector2 newPos = new Vector2(this.transform.position.x - 4f, this.transform.position.y);
             //this.gameObject.transform.position = Vector3.Lerp(transform.position, newPos, playerSpeed * Time.smoothDeltaTime);
             //this.gameObject.transform.position = Vector2.MoveTowards(this.gameObject.transform.position, newPos, playerSpeed * Time.deltaTime);
 
             this.gameObject.GetComponent<Rigidbody2D>().AddForce(-Vector2.right * playerSpeed * Time.smoothDeltaTime);
             this.gameObject.transform.eulerAngles = new Vector2(0, 180);
             
             isFacingRight = false;
             isFacingLeft = true;
             
             isMoving = true;
         }
         
         if(Input.GetKey(KeyCode.D))
         {
             //Vector2 newPos = new Vector2(this.transform.position.x + 4f, this.transform.position.y);
             //this.gameObject.transform.position = Vector3.Lerp(transform.position, newPos, playerSpeed * Time.smoothDeltaTime);
             //this.gameObject.transform.position = Vector2.MoveTowards(this.gameObject.transform.position, newPos, playerSpeed * Time.deltaTime);
 
             this.gameObject.GetComponent<Rigidbody2D>().AddForce(Vector2.right * playerSpeed * Time.smoothDeltaTime);
             this.gameObject.transform.eulerAngles = new Vector2(0, 0);
             
             isFacingRight = true;
             isFacingLeft = false;
             
             isMoving = true;
         }

If anyone has any suggestions AT ALL, please share. I have spent days trying to resolve this issue.

Thank you.

Answer 1

Answer by GiyomuGames · Oct 19, 2015 at 06:22 AM

Hi YeeLuke,

Just checking but please confirm that the code above is in FixedUpdate() and that your code updating the camera position is in LateUpdate().

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YeeLuke · Oct 19, 2015 at 06:42 AM 0

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Yes the above code is in FixedUpdate, the camera does not move in the scene.

Thanks for the reply.

GiyomuGames YeeLuke · Oct 19, 2015 at 06:59 AM 0

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I see. I don't think it will make a huge different but did you try using Time.fixedDeltaTime instead of Time.smoothDeltaTime? I'll try to check in my 2D game if the RigidBody2d interpolate is set to None or not.

YeeLuke GiyomuGames · Oct 19, 2015 at 07:09 AM 0

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Time.fixedDeltaTime seems to give the same results of Time.smoothDeltaTime...the sprite still has a flicker-y/choppy movement.

Perhaps is there a way to make the sprite move pixel-by-pixel instead of Unity's "unit" measurement?

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YeeLuke · Oct 19, 2015 at 04:27 PM 0

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I did not change the localscale of the gameObject.
playerSpeed is a float
The code for the player rotation is: this.gameObject.transform.eulerAngles = new Vector2(0, 180);

I tried changing the PPU and the same issues occurs.

Thanks again, for all the suggestions. I appreciate it a lot.

[2D] Sprite flickers/is choppy when moving

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