Question by EpicCrownKing · Sep 13, 2019 at 03:16 AM · 2d rigidbody2d velocity

Getting the future position of a rigidbody2D with velocity

  Hello, this is a question that's stumped me for quite a bit. I'm making a tower defense game, and I need the tower to shoot at the future position of an enemy. I tried getting the velocity but discovered that transform.translate and rb.addforce both don't give it a velocity. Rigidbody.MovePosition moves too fast, so I was wondering if there was any way to get its future position in x seconds and return a Vector2 to plug into my trigonomic formula. If there's somewhere else I should look for this, let me know.

Code: //Variables float alpha; float d1; float d2; GameObject enemy = rangeSight.GetComponent().target;

             //Getting values
             d1 = Vector2.Distance(transform.position, enemy.transform.position); //Getting the distance from the tower to the enemy, the first leg of the triangle
 
             d2 = enemy.GetComponent<EnemyScript>().speed * shootSpeed * Time.deltaTime; //Getting the second leg of the triangle
 
             Vector2 d2Vector //THIS IS WHAT I NEED TO FIND
 
             alpha = Vector2.Angle(d2Vector, transform.position); //Getting the third angle of the triangle, <EFT
 
             Debug.Log(alpha);
 
             //Final formula
             double finalAngle = Math.Asin((d2 * Math.Sin(alpha)) / d1); //PLugging in the variables and doing the trigonometry
 
             //Shooting
             float floatFinalAngle = (float)finalAngle; //Converting double to float
 
             transform.eulerAngles = new Vector3(transform.rotation.x, transform.rotation.y, transform.rotation.z + floatFinalAngle); //Changing rotation
             Instantiate(projectile, transform.position, transform.rotation); //Firing

If you have any questions, I'll answer them as soon as possible. Thanks, EpicCrownKing

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