bullet problem? | Official Unity Discord | Page 1

cloud phoenix Jul 8, 2023, 12:46 PM

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public Transform target;
    public float shootForce = 200f;

    private void FixedUpdate()
    {
        Vector3 initialDirection = target.position - transform.position;

        float initialHorizontalDistance = new Vector3(initialDirection.x, 0f, initialDirection.z).magnitude;

        float timeOfFlight = initialHorizontalDistance / shootForce;

        float verticalVelocity = initialDirection.y / timeOfFlight + 0.5f * Mathf.Abs(Physics.gravity.y) * timeOfFlight;

        Vector3 initialVelocity = new Vector3(initialDirection.x, verticalVelocity, initialDirection.z).normalized * shootForce;

        Vector3 targetFuturePosition = target.position + target.GetComponent<Rigidbody>().velocity * timeOfFlight;

        Vector3 adjustedDirection = targetFuturePosition - transform.position;

        float adjustedHorizontalDistance = new Vector3(adjustedDirection.x, 0f, adjustedDirection.z).magnitude;

        float adjustedTimeOfFlight = adjustedHorizontalDistance / shootForce;

        float adjustedVerticalVelocity = adjustedDirection.y / adjustedTimeOfFlight + 0.5f * Mathf.Abs(Physics.gravity.y) * adjustedTimeOfFlight;

        Vector3 adjustedInitialVelocity = new Vector3(adjustedDirection.x, adjustedVerticalVelocity, adjustedDirection.z).normalized * shootForce;

        float horizontalAngle = Mathf.Atan2(adjustedDirection.x, adjustedDirection.z) * Mathf.Rad2Deg;

        float verticalAngle = Mathf.Asin(adjustedVerticalVelocity / shootForce) * Mathf.Rad2Deg;

        transform.rotation = Quaternion.Euler(-verticalAngle, horizontalAngle, 0f);
    }