How to Spawn a wave of objects with the tip pointing at the targets direction?

Unity Engine
,
1

What I am trying to achieve is to get the tip of the wave to point at the targets direction.

public void SpawnWave(GameObject WaveBullet, Vector3 TargetPosition, float bullets = 7)
    {

        float angle = 180f / bullets;
        Vector3 direction = (TargetPosition - this.transform.position).normalized;
        // use a loop to instantiate the prefabs around the half circle
        for (int i = 0; i < bullets; i++)
        {
            // calculate the current angle
            float currentAngle = angle * i;

            // calculate the x and z positions of the prefab based on the radius and current angle
            float x = 5 * Mathf.Cos(currentAngle * Mathf.Deg2Rad);
            float z = 5 * Mathf.Sin(currentAngle * Mathf.Deg2Rad);


            Vector3 position = new Vector3(x, 0, z);
            Quaternion rotation = Quaternion.LookRotation(direction,this.transform.up);

          Instantiate(WaveBullet, position + this.transform.position, rotation);

          
        }
    }

8670804--1168056--ezgif-3-105c8a79c3.gif

2

I would create an empty GameObject, parent all of the projectiles to it (positioning them locally), and then rotate the holder.

That simplifies the vector math :stuck_out_tongue: . You can unparent them afterwards and destroy the holder, if you want.

3

Multiplying the relative position by the same rotation quaternion you already have should do what you want.

Something similar to:

Vector3 position = rotation * new Vector3(x, 0, z);
2 Likes
4

Thanks! I would of never figured it out.
8672145--1168323--ai.gif