public Vector2 CalculateForce(SimulatedObject targetObject)
{
var targetObjectPos = targetObject.position;
var selfPos = simulatedObject.position;
var r2 = (targetObjectPos - selfPos).sqrMagnitude;
var forceDirection = (selfPos - targetObjectPos).normalized;
var forceMagnitude = m_simulationManager.gravitationalConstant * simulatedObject.mass * targetObject.mass / r2;
return(forceDirection * forceMagnitude);
}
private void SimulateStep(SimulatedObject target)
{
if (m_simulationRegion && !m_simulationRegion.IsInside(target.position))
{
return;
}
var force = Vector2.zero;
foreach (var planet in m_planets.bodies)
{
force += planet.CalculateForce(target);
}
target.ApplyForce(force);
}
private void CreateTruePath(SimulatedObject target)
{
var dt = Time.fixedDeltaTime;
var time = 0.0f;
// m_targetPath = ScriptableObject.CreateInstance<TruePath>();
m_player.BeginSimulation();
if (!Application.isPlaying)
{
foreach (var planet in FindObjectsOfType <CelestialBody>())
{
planet.RegisterBody();
}
}
m_targetPath.Clear();
RecordState(target, time);
while (time < m_maxTime)
{
SimulateStep(target);
time += dt;
target.UpdateObject(dt);
RecordState(target, time);
}
if (!Application.isPlaying)
{
foreach (var planet in FindObjectsOfType <CelestialBody>())
{
planet.UnregisterBody();
}
}
m_player.EndSimulation();
Debug.Log($"Created path with {m_targetPath.GetPositions().Length} points");
}
private void RecordState(SimulatedObject target, float time)
{
m_targetPath.AddPoint(target, time);
}
public void AddPoint(SimulatedObject target, float time)
{
m_points.Add(new PathPoint(target.position, target.velocity, time));
}