bullet rotation as its affected by gravity

[Eqric]

Hi, i am trying to get a bullet to rotate as it moves and is affected by gravity.
So if the bullet speed in 0m/s it will just rotate 90degrees and fall straight down.
My plan was to “make” a triangle of the “start” and “end” position of the bullet, ofc the start and end position changes alot during the bullets flight.

So my code looks like this

tempDistance = Vector3.Distance(startV,endV);
angle = Mathf.Rad2Deg * (Mathf.Asin(hightdecrease/tempDistance));
Vector3 test = new Vector3(angle,0,0);
transform.Rotate(test);

highdecrease is B in the picture above and i think tempDistance will be C.

But this doesn´t seems to work at all, i get very strange angles.
Is the math correct?

[system]

You could try this:

//This would be the maximum speed of you bullet
float maxSpeed = 900;

//This is where the bullet was last frame
Vector3 lastPos;

void Update () {
//Find the velocity in m/s
float velocity = (lastPos - transform.position)/Time.deltaTime;

//Set up a ratio that will be used to rotate the bullet. If the velocity is maxSpeed, then the rotation will be 0 (forward, else it will rotate towards facing down (Assuming that +Z is your forward axis)

transform.eulerAngles = new Vector3(velocity/maxSpeed * 90, transform.eulerAngles.y, 0);

//Set lastPos so we can get the velocity next frame!

lastPos = transform.Position;

}

Very rough, but if you implement code like this, it should do what you asked!

-AJ

[Eqric]

Thanks mate, i give this a try!