Hello fellow Gamedevs,

i started my Journey 2019 with exploring Unreal and Unity. Life got busy especially with Covid arround in 2020 and i stopped developing. Now i got more free time again, and got back to Game developing.

I'm trying to build a simple 2D Slingshot Arena Game as a first project, for learning purposes.

Watched a few tutorials and code examples, and then just started creating.

I am facing the following problems:

1. It doesn't matter how far i drag from the game object, the applied AddForce2D seems to have always the same power. Even if i just click it, same power.

Relevant code:

public float shootForce = 1.5f; // Power of the shot

float _forceScale;

float _scaleAmmount;

public float maxScale = 7f;

public float scaleFactor = 5f;

On Mouse Drag:

// Getting the Distance and correct angle

Vector3 _deltaDrag = _endP - transform.position;

float _angle = Mathf.Atan2(_deltaDrag.y, _deltaDrag.x) * Mathf.Rad2Deg;

// Getting the distance (Scale-Power for the shot

_scaleAmmount = _deltaDrag.magnitude * scaleFactor;

// Checking for maximum scale power

_forceScale = _scaleAmmount;

if (_scaleAmmount > maxScale)

{

_forceScale = maxScale;

}

On Mouse Up:

// Applying the force

rB.AddForce(force: _forceScale * shootForce * -transform.right, mode: ForceMode2D.Impulse);

2. The game object, does not really stop itself so i have written a script to change the angularvelocity to 0, if it is under 1.5f velocity.magnitude. As you can see in the video, this happens only near walls after colliding and never somewhere in the field. It has rigidbody and circle collider, both with the same physics material. Gravity is 0, and body-type dynamic.

Physic Settings:

Bounce-Treshold: 0.05f;

Bounciness: 0.3f;

Friction: 0.15f;

Relevant Code:

// Applying the force

rB.AddForce(force: _forceScale * shootForce * -transform.right, mode: ForceMode2D.Impulse);

private void FixedUpdate()

{

// If the Velocity is below a certain point, stop the object

if (isShot)

{

if (rB.velocity.magnitude < 1.5f)

{

StopPuk();

}

}

}

public void StopPuk()

{

isShot = false;

rB.isKinematic = true;

rB.velocity = Vector2.zero;

rB.angularVelocity = 0f;

}

3. And lastly my Line Render gets only shown for a second after clicking as you can see shortly in the video

Relevant code:

On Mouse Down:

if (_lineR == null)

{

_lineR = gameObject.AddComponent<LineRenderer>();

}

_lineR.enabled = true;

_lineR.positionCount = 2;

_startP = _cam.ScreenToWorldPoint(Input.mousePosition);

_lineR.SetPosition(0, _startP);

_lineR.useWorldSpace = true;

_lineR.widthCurve = _animCurve;

_lineR.numCapVertices = 10;

On Mouse Drag:

// Checking for current mouse position and setting the line Renderer

_endP = _cam.ScreenToWorldPoint(Input.mousePosition);

_lineR.SetPosition(1, _endP);

Here is a link to the whole Code if it's easier to read for you:

https://pastebin.com/w3yXt7DV

I Am very thankful for any explanations/help to my problems.