// Start moving the projectile over the trajectory using UsedBallisticsSettings,
// the current GameObject's position, the rotationTransform's orientation, and
// the velocity vector.
public void Start()
{
BallisticsSettings ballistics = UsedBallisticsSettings;
_time = 0.0f;
_isActive = true;
_trajectory3D = new Trajectory3D(Projectile3D, transform.position, velocity);
_headingFrequency = Mathf.Sqrt(_trajectory3D.k) * ballistics.rotationStiffness;
_headingDamping = ballistics.rotationDamping;
_windVelocity = ballistics.windVelocity;
if (rotationTransform == null)
{
rotationTransform = transform;
}
AdvanceTime(0.0f);
}
void FixedUpdate()
{
remainingReloadTime = Mathf.Max(remainingReloadTime - Time.deltaTime, 0.0f);
UpdateTrackedPositionsAndVelocities();
// get the latest plan for the latest data
bool planIsReadyForLaunch;
Vector3 absoluteProjectileVelocity = TurretHelper.UpdatePlan(
_planners, _projectileKinematics, launchTransform.position, _velocity,
_targetPosition, _targetVelocity, remainingReloadTime, ref _plannedFlightTime,
out planIsReadyForLaunch);
// output debug widgets if requested
if (drawDebugTrajectoryPlan)
{
Trajectory3D trajectory3D = new Trajectory3D(
_projectileKinematics.Projectile3D, launchTransform.position +
_velocity * remainingReloadTime, absoluteProjectileVelocity);
TurretHelper.DebugDrawLastTrajectory(trajectory3D,
_plannedFlightTime);
}
// if a plan has been found, update the turret's aim
bool hasPlan = absoluteProjectileVelocity.sqrMagnitude > 0;
Vector3 relativeProjectileVelocity = absoluteProjectileVelocity -
_velocity;
if (hasPlan)
{
UpdateTurretAim(relativeProjectileVelocity);
// if the plan and aim is good enough, and there's no more remaining
// weapon reload time, then launch.
bool stillImprovingAimAccuracy = UpdateTurretOrientation();
if (canLaunch && planIsReadyForLaunch && !stillImprovingAimAccuracy &&
Vector3.Dot(relativeProjectileVelocity, launchTransform.forward) > 0)
{
Launch(relativeProjectileVelocity);
}
}
}
