How to shoot towards mouse position in 2d?

Questions & Answers
1

I’m using the below code in an attempt to shoot an arrow toward the mouse cursor but the arrow just shoots upwards and to the left. How can I get it to shoot toward my cursor?

public void shootArrow(float scaler) {
	Vector2 vectorToTarget = Camera.main.ScreenToWorldPoint(Input.mousePosition) - center.transform.position;
	arrow = Instantiate (arrowPrefab, center.transform.position, Quaternion.identity) as GameObject;
	arrow.GetComponent<Rigidbody2D>().AddForce(vectorToTarget * shootStrength * scaler, ForceMode2D.Impulse);
}
2

You use vector math! If you get the mouse coordinates you can subtract them from the player position and then normalize it to get the direction, then you use that direction calculating the velocity for the arrow.