//<summary>
//Determines whether or not to change the sphere of influence then changes it
//</summary>
//<param name="position"> The position of the ship in global coordinates
//<param name="velocity"> The velocity relative to the current body being orbited
//<param name="the rest"> F**k it you get the idea
//<returns> Returns nothing, like anyone who went to blockbuster after netflix got big
private void changeSpheresOfInfluence(Vector2 position, Vector2 velocity, GameObject currentMassiveBody)
{
GameObject newSphereOfInfluence = findInfluencingCelestialBody(position, velocity, currentMassiveBody);
//change spheres of influence
if (newSphereOfInfluence.transform.GetInstanceID() != currentMassiveBody.transform.GetInstanceID() &&
sphereChangeImmunity < 1)
{
//From small to big
if (newSphereOfInfluence.GetComponent <MassiveBodyElements>().massiveBodyType > currentMassiveBody.GetComponent <MassiveBodyElements>().massiveBodyType)
{
gravityElements.massiveBody = newSphereOfInfluence;
calculateInitialOrbitalElements(position - MiscHelperFuncs.convertToVec2(newSphereOfInfluence.transform.position), velocity + currentMassiveBody.GetComponent <GravityElements>().velocity);
sphereChangeImmunity = 10;
shipPatchedConics.updateEncounters();
}
else //big to small
{
gravityElements.massiveBody = newSphereOfInfluence;
calculateInitialOrbitalElements(position - MiscHelperFuncs.convertToVec2(newSphereOfInfluence.transform.position), velocity - newSphereOfInfluence.GetComponent <GravityElements>().velocity);
sphereChangeImmunity = 10;
shipPatchedConics.updateEncounters();
}
}
else
{
sphereChangeImmunity--;
}
}
public void hover(Vector2 mouseLocation)
{
this.mouseLocation = mouseLocation - MiscHelperFuncs.convertToVec2(shipElements.massiveBody.transform.position);
mouseAltitude = this.mouseLocation.magnitude;
mouseTrueAnomaly = Math.Atan2(this.mouseLocation.y, this.mouseLocation.x) -
Math.Atan2(shipElements.Eccentricity.y, shipElements.Eccentricity.x);
if (mouseTrueAnomaly > Math.PI)
{
mouseTrueAnomaly -= 2 * Math.PI;
}
orbitalAltitude = OrbitalHelper.calculateAltitude(shipElements.Eccentricity, shipElements.SemiMajorAxis, shipElements.SemiLatusRectum, mouseTrueAnomaly, shipElements.OrbitType);
if (mouseAltitude > orbitalAltitude - hoverDistanceTolerance && mouseAltitude < orbitalAltitude + hoverDistanceTolerance && !dragging)
{
hovering = true;
}
else
{
hovering = false;
}
//Debugging
if ((mouseTrueAnomaly > Math.PI || mouseTrueAnomaly < -Math.PI) && shipElements.OrbitType == OrbitTypes.elliptical)
{
//Debug.Break();
//Debug.LogWarning("ERROR, mouse true anomaly out of bounds");
/*Debug.Log("NODE");
* Debug.Log("Position: " + mouseLocation);
* Debug.Log("True Anomaly: " + mouseTrueAnomaly);
* Debug.Log("Thrust: " + "heehee");*/
}
}
void FixedUpdate()
{
//detect soi change
if (currentMassiveBody.name != shipElements.massiveBody.name)
{
deleteNode();
}
//Have we arrived at a node?
if (node != null)
{
//Is the ship moving clockwise?
if (shipElements.Clockwise)
{
//TODO implement edge case when crossing over 0
if (MiscHelperFuncs.convertTo360Angle(shipElements.TrueAnomaly) < MiscHelperFuncs.convertTo360Angle(node.getTrueAnomaly()) &&
MiscHelperFuncs.convertTo360Angle(lastTrueAnomaly) > MiscHelperFuncs.convertTo360Angle(node.getTrueAnomaly()))
{
executeManeuver();
}
}
else
{
if (MiscHelperFuncs.convertTo360Angle(shipElements.TrueAnomaly) > MiscHelperFuncs.convertTo360Angle(node.getTrueAnomaly()) &&
MiscHelperFuncs.convertTo360Angle(lastTrueAnomaly) < MiscHelperFuncs.convertTo360Angle(node.getTrueAnomaly()))
{
executeManeuver();
}
}
}
//position maneuver node
if (node != null)
{
positionNode();
}
else
{
nodeButton.transform.localScale = new Vector3(0, 0, 0);
nodePlacard.transform.localScale = new Vector3(0, 0, 0);
thrustVectorHandle.transform.localScale = new Vector3(0, 0, 0);
}
//Determine thrust vector
if (dragging)
{
thrustVector = MiscHelperFuncs.convertToVec2(Camera.main.ScreenToWorldPoint(Input.mousePosition)) - (node.getNodePosition() + shipElements.GlobalTransformationVector);
}
//do something
lastTrueAnomaly = shipElements.TrueAnomaly;
}
//<summary>
//Takes in everything in global coordinates (relative to the origin(0, 0)) and returns the game object that is influencing the craft
//</summary>
//<param name="position"> Re-read the summary
//<param name="asdf"> Here's to the little guys
private GameObject findInfluencingCelestialBody(Vector2 position, Vector2 velocity, GameObject currentMassiveBody)
{
GameObject[] massiveBodies = GameObject.FindGameObjectsWithTag("MassiveBody");
List <GameObject> spheresOfInfluence = new List <GameObject>();
for (int i = 0; i < massiveBodies.Length; i++)
{
//quick and dirty calculation of altitude
double mu = massiveBodies[i].GetComponent <MassiveBodyElements>().mass *GlobalElements.GRAV_CONST;
Vector2 relativePosition = position - MiscHelperFuncs.convertToVec2(massiveBodies[i].transform.position);
Vector2 relativeVelocity = velocity + massiveBodies[i].GetComponent <GravityElements>().velocity;
Vector2 eccentricity = OrbitalHelper.calculateEccentricity(relativePosition, relativeVelocity, mu);
OrbitTypes orbitType = OrbitalHelper.determineOrbitType(eccentricity);
double mechanicalEnergy = OrbitalHelper.calculateMechanicalEnergy(relativePosition, relativeVelocity, mu, orbitType);
double semiMajorAxis = OrbitalHelper.calculateSemiMajorAxis(mechanicalEnergy, mu, orbitType);
Vector2 perigee = OrbitalHelper.calculatePerigee(semiMajorAxis, eccentricity, orbitType);
double semiLatusRectum = OrbitalHelper.calculateSemiLatusRectum(semiMajorAxis, eccentricity, perigee, orbitType); //semiMajorAxis * (1 - Math.Pow(eccentricity.magnitude, 2));
double trueAnomaly = Vector2.Angle(relativePosition, eccentricity);
trueAnomaly = MiscHelperFuncs.convertToRadians(trueAnomaly);
trueAnomaly = Math.Abs(MiscHelperFuncs.wrapAngle(trueAnomaly));
double altitude = Vector2.Distance(massiveBodies[i].transform.position, transform.position);//semiLatusRectum / (1 + eccentricity.magnitude * Math.Cos(trueAnomaly));
if (massiveBodies[i].GetComponent <MassiveBodyElements>().SphereOfInfluence > altitude && massiveBodies[i].transform.GetInstanceID() != this.transform.GetInstanceID())
{
if (altitude < 0)
{
Debug.Log("altitude: " + altitude);
Debug.Log("semilatusrectum: " + semiLatusRectum);
Debug.Log("Eccentricity: " + eccentricity.magnitude);
Debug.Log("true anomaly: " + trueAnomaly);
}
spheresOfInfluence.Add(massiveBodies[i]);
}
}
double smallestDistance = double.PositiveInfinity;
GameObject returnGameObject = currentMassiveBody;
foreach (GameObject massiveBody in spheresOfInfluence)
{
double distance = Vector2.Distance(massiveBody.transform.position, transform.position);
if (distance < smallestDistance)
{
smallestDistance = distance;
returnGameObject = massiveBody;
}
}
return(returnGameObject);
}
// Update is called once per frame
void FixedUpdate()
{
//Display Patched Conics
float angle = 0;
while (angle < 2 * Math.PI)
{
lineDrawer.DrawLine(drawOrbitRadiusHelper(gravElements.Eccentricity, gravElements.GlobalRotationAngle, gravElements.SemiMajorAxis, angle) + gravElements.GlobalTransformationVector,
drawOrbitRadiusHelper(gravElements.Eccentricity, gravElements.GlobalRotationAngle, gravElements.SemiMajorAxis, angle + 0.01f) + gravElements.GlobalTransformationVector, patchedConicsColor);
angle += 0.01f;
}
//Display SOI
angle = 0;
while (angle <= 2 * Math.PI)
{
Vector2 dirVec1 = new Vector2((float)Math.Cos(angle), (float)Math.Sin(angle));
dirVec1.Normalize();
dirVec1 *= (float)massiveElements.SphereOfInfluence;
angle += 0.01f;
Vector2 dirVec2 = new Vector2((float)Math.Cos(angle), (float)Math.Sin(angle));
dirVec2.Normalize();
dirVec2 *= (float)massiveElements.SphereOfInfluence;
lineDrawer.DrawLine(dirVec1 + MiscHelperFuncs.convertToVec2(transform.position), dirVec2 + MiscHelperFuncs.convertToVec2(transform.position), patchedConicsColor);
}
/**
* Messy and unnecessary, i might bring it back though
*/
//Display Orbital POI
/*float width = perigeePlacard.rectTransform.rect.width * perigeePlacard.transform.localScale.x;
* float height = perigeePlacard.rectTransform.rect.height * perigeePlacard.transform.localScale.y;
* Vector2 offsetVector = gravElements.Perigee.normalized *
* Mathf.Sqrt(Mathf.Pow(width / 2, 2) + Mathf.Pow(height / 2, 2));
*
* perigeeButton.transform.position = gravElements.GlobalTransformationVector + gravElements.Perigee + offsetVector;
* perigeeButton.transform.localScale = new Vector3(GlobalElements.zoomLevel / UI_SCALE_CONST, GlobalElements.zoomLevel / UI_SCALE_CONST, 0);
*
* perigeePlacard.transform.position = gravElements.GlobalTransformationVector + gravElements.Perigee + offsetVector;
* perigeePlacard.transform.localScale = new Vector3(GlobalElements.zoomLevel / UI_SCALE_CONST, GlobalElements.zoomLevel / UI_SCALE_CONST, 0);
* perigeePlacard.transform.rotation = Quaternion.AngleAxis(Mathf.Atan2(gravElements.Perigee.y, gravElements.Perigee.x) * Mathf.Rad2Deg - 45, Vector3.forward);
*
* switch (gravElements.OrbitType)
* {
* case OrbitTypes.circular:
* apogeeButton.transform.position = gravElements.GlobalTransformationVector + gravElements.Apogee - offsetVector;
* apogeeButton.transform.localScale = new Vector3(GlobalElements.zoomLevel / UI_SCALE_CONST, GlobalElements.zoomLevel / UI_SCALE_CONST, 0);
*
* apogeePlacard.transform.position = gravElements.GlobalTransformationVector + gravElements.Apogee - offsetVector;
* apogeePlacard.transform.localScale = new Vector3(GlobalElements.zoomLevel / UI_SCALE_CONST, GlobalElements.zoomLevel / UI_SCALE_CONST, 0);
* apogeePlacard.transform.rotation = Quaternion.AngleAxis(Mathf.Atan2(gravElements.Apogee.y, gravElements.Apogee.x) * Mathf.Rad2Deg - 45, Vector3.forward);
* break;
* case OrbitTypes.elliptical:
* apogeeButton.transform.position = gravElements.GlobalTransformationVector + gravElements.Apogee - offsetVector;
* apogeeButton.transform.localScale = new Vector3(GlobalElements.zoomLevel / UI_SCALE_CONST, GlobalElements.zoomLevel / UI_SCALE_CONST, 0);
*
* apogeePlacard.transform.position = gravElements.GlobalTransformationVector + gravElements.Apogee - offsetVector;
* apogeePlacard.transform.localScale = new Vector3(GlobalElements.zoomLevel / UI_SCALE_CONST, GlobalElements.zoomLevel / UI_SCALE_CONST, 0);
* apogeePlacard.transform.rotation = Quaternion.AngleAxis(Mathf.Atan2(gravElements.Apogee.y, gravElements.Apogee.x) * Mathf.Rad2Deg - 45, Vector3.forward);
* break;
* default:
* apogeePlacard.transform.localScale = new Vector3(0, 0, 0);
* apogeeButton.transform.localScale = new Vector3(0, 0, 0);
* break;
*
* }*/
}
