//Choose which integration method you want to use to simulate how the bullet fly
public static void CurrentIntegrationMethod(float timeStep, Vector3 currentPos, Vector3 currentVel, out Vector3 newPos, out Vector3 newVel)
{
//IntegrationMethods.BackwardEuler(timeStep, currentPos, currentVel, out newPos, out newVel);
//IntegrationMethods.ForwardEuler(timeStep, currentPos, currentVel, out newPos, out newVel);
//IntegrationMethods.Heuns(timeStep, currentPos, currentVel, out newPos, out newVel);
IntegrationMethods.HeunsNoExternalForces(timeStep, currentPos, currentVel, out newPos, out newVel);
}
//Easier to change integration method once in this method
public static void CurrentIntegrationMethod(
float h,
Vector3 currentPosition,
Vector3 currentVelocity,
out Vector3 newPosition,
out Vector3 newVelocity)
{
//IntegrationMethods.EulerForward(h, currentPosition, currentVelocity, out newPosition, out newVelocity);
IntegrationMethods.Heuns(h, currentPosition, currentVelocity, out newPosition, out newVelocity);
//IntegrationMethods.RungeKutta(h, currentPosition, currentVelocity, out newPosition, out newVelocity);
//IntegrationMethods.BackwardEuler(h, currentPosition, currentVelocity, out newPosition, out newVelocity);
}
public void MoveSphereOneStep()
{
float timeStep = Time.fixedDeltaTime;
IntegrationMethods.Heuns(timeStep, currentPos, currentVel, transform.up, bulletDataa, out nextPos, out nextVel);
currentPos = nextPos;
currentVel = nextVel;
transform.position = currentPos;
transform.forward = currentVel.normalized;
}
void MoveBulletOneStep()
{
//Use an integration method to calculate the new position of the bullet
float timeStep = Time.fixedDeltaTime;
IntegrationMethods.Heuns(timeStep, currentPos, currentVel, transform.up, bulletData, out newPos, out newVel);
//Debug.DrawRay(transform.position, transform.up * 5f);
//Set the new values to the old values for next update
currentPos = newPos;
currentVel = newVel;
//Add the new position to the bullet
transform.position = currentPos;
//Change so the bullet points in the velocity direction
transform.forward = currentVel.normalized;
}
