private void SetCameraRotation()
{
IGravitationalBody target = _gravitationalBodies[_targetIndex];
if (target is ISpaceCraft)
{
if (_rotateInOrbit)
{
if (target.InOrbit)
{
if (!_targetInOrbit)
{
_camera.SetRotation(0, true);
_targetInOrbit = true;
}
else
{
_camera.SetRotation(0);
}
}
else
{
DVector2 craftOffset = target.GravitationalParent.Position - target.Position;
craftOffset.Normalize();
if (_targetInOrbit)
{
_camera.SetRotation(Constants.PiOverTwo - craftOffset.Angle(), true);
_targetInOrbit = false;
}
else
{
_camera.SetRotation(Constants.PiOverTwo - craftOffset.Angle());
}
}
}
else
{
DVector2 craftOffset = target.GravitationalParent.Position - target.Position;
craftOffset.Normalize();
_camera.SetRotation(Constants.PiOverTwo - craftOffset.Angle());
}
}
else
{
_camera.SetRotation(0);
}
}
/// <summary>
/// Stages the spacecraft according to its mounted angle by applying a normal force.
/// </summary>
public void Stage()
{
if (Children.Count > 0)
{
ISpaceCraft[] children = Children.ToArray();
foreach (ISpaceCraft child in children)
{
child.Stage();
}
}
else if (Parent != null)
{
Parent.RemoveChild(this);
Parent = null;
// Simulate simple staging mechanism
double sAngle = StageOffset.Angle();
DVector2 stagingNormal = DVector2.FromAngle(Pitch + sAngle + Math.PI * 0.5);
_stagingForce = stagingNormal * Mass * 0.005;
_requiresStaging = true;
}
}
public override double GetRelativePitch()
{
double altitude = GetRelativeAltitude();
double relativePitch = Pitch - GravitationalParent.Pitch;
if (altitude > GravitationalParent.AtmosphereHeight)
{
return(relativePitch);
}
DVector2 difference = GravitationalParent.Position - Position;
difference.Normalize();
var surfaceNormal = new DVector2(difference.Y, difference.X);
double normal = surfaceNormal.Angle();
if (!double.IsNaN(normal))
{
if (altitude > 0.1)
{
relativePitch += normal;
}
else
{
relativePitch = normal;
}
}
return(relativePitch);
}
public void SetRelativePitch(double pitch)
{
double altitude = GetRelativeAltitude();
if (altitude > GravitationalParent.AtmosphereHeight)
{
Pitch = GravitationalParent.Pitch + pitch;
}
else
{
DVector2 difference = GravitationalParent.Position - Position;
difference.Normalize();
var surfaceNormal = new DVector2(difference.Y, difference.X);
double normal = surfaceNormal.Angle();
if (double.IsNaN(normal))
{
Pitch = GravitationalParent.Pitch + pitch;
}
else
{
Pitch = GravitationalParent.Pitch + pitch - normal;
}
}
foreach (ISpaceCraft child in Children)
{
child.SetRelativePitch(pitch);
}
}
// Interpolate between current and target orientation over the duration
public override void Update(double elapsedTime, SpaceCraftBase spaceCraft)
{
double altitude = spaceCraft.GetRelativeAltitude();
double atmosphereheight = spaceCraft.GravitationalParent.AtmosphereHeight;
DVector2 retrograde = spaceCraft.GetRelativeVelocity();
if (altitude > atmosphereheight)
{
retrograde = spaceCraft.GetInertialVelocity();
}
retrograde.Negate();
retrograde.Normalize();
double retrogradeAngle = retrograde.Angle();
double adjustRatio = (elapsedTime - StartTime) / _adjustmentTime;
if (adjustRatio > 1)
{
spaceCraft.SetPitch(retrogradeAngle);
}
else
{
double interpolatedAdjust = MathHelper.LerpAngle(_curentOrientation, retrogradeAngle, adjustRatio);
spaceCraft.SetPitch(interpolatedAdjust);
}
}
// Interpolate between current and target orientation over the duration
public override void Update(double elapsedTime, SpaceCraftBase spaceCraft)
{
DVector2 prograde = spaceCraft.GetRelativeVelocity();
prograde.Normalize();
double retrogradeAngle = prograde.Angle();
if (retrogradeAngle > 0)
{
retrogradeAngle -= Math.PI * 2;
}
double adjustRatio = (elapsedTime - StartTime) / _adjustmentTime;
if (adjustRatio > 1)
{
spaceCraft.SetPitch(retrogradeAngle);
}
else
{
double interpolatedAdjust = MathHelper.LerpAngle(_curentOrientation, retrogradeAngle, adjustRatio);
spaceCraft.SetPitch(interpolatedAdjust);
}
}
public GridFin(ISpaceCraft parent, DVector2 offset, int block, bool isLeft)
: base(parent, GenerateTexturePath(block, isLeft))
{
if (block == 6)
{
Width = 2.4;
Height = 4.0;
}
else if (block == 5)
{
Width = 1.3;
Height = 2.0;
}
else
{
Width = 1.2192;
Height = 1.79806518;
}
DrawingOffset = 0.6;
_isLeft = isLeft;
_offsetLength = offset.Length();
_offsetRotation = offset.Angle() - Constants.PiOverTwo;
}
public SSGridFin(ISpaceCraft parent, DVector2 offset, bool isLeft)
: base(parent, GenerateTexturePath(isLeft))
{
_isLeft = isLeft;
_offsetLength = offset.Length();
_offsetRotation = offset.Angle() - Constants.PiOverTwo;
}
public LandingLeg(ISpaceCraft parent, DVector2 offset, int block, bool isLeft)
: base(parent, GenerateTexturePath(block, isLeft))
{
_isLeft = isLeft;
_offsetLength = offset.Length();
_offsetRotation = offset.Angle() - Constants.PiOverTwo;
}
public NGLandingLeg(ISpaceCraft parent, DVector2 offset, bool isLeft)
: base(parent, GenerateTexturePath(isLeft))
{
_parent = parent;
_isLeft = isLeft;
_offsetLength = -offset.Length();
_offsetRotation = offset.Angle() + Math.PI / 2.0;
}
public void AddPoint(DVector2 point, IMassiveBody parentBody, bool isPowered)
{
DVector2 offset = point - parentBody.Position;
_trailAngles.Add(offset.Angle() - parentBody.Pitch);
_trailDistances.Add(offset.Length());
_trailPowered.Add(isPowered);
}
public DrogueChute(ISpaceCraft parent, DVector2 offset)
{
_parent = parent;
_offsetLength = offset.Length();
_offsetRotation = _offsetRotation = offset.Angle() - Math.PI / 2.0;
_texture = new Bitmap("Textures/Spacecrafts/Falcon/Common/drogueChute.png");
}
public override double GetRelativePitch()
{
DVector2 difference = GravitationalParent.Position - Position;
difference.Normalize();
double surfaceNormal = difference.Angle() - Constants.PiOverTwo;
return(Pitch - surfaceNormal);
}
protected EngineBase(ISpaceCraft parent, DVector2 offset, EngineFlame flame)
{
_parent = parent;
_offsetLength = offset.Length();
_offsetRotation = offset.Angle() - Math.PI / 2.0;
_engineFlame = flame;
}
public LandingLeg(ISpaceCraft parent, DVector2 offset, bool isLeft)
{
_parent = parent;
_isLeft = isLeft;
_offsetLength = offset.Length();
_offsetRotation = _offsetRotation = offset.Angle() - Math.PI / 2.0;
_texture = isLeft ? new Bitmap("Textures/landingLegLeft.png") : new Bitmap("Textures/landingLegRight.png");
}
protected EngineBase(ISpaceCraft parent, DVector2 offset, Plume plume)
{
Parent = parent;
Offset = offset;
_offsetLength = offset.Length();
_offsetRotation = offset.Angle() - Math.PI / 2.0;
_plume = plume;
}
public double GetSurfaceAngle(DateTime localTime, IMassiveBody sun)
{
DVector2 sunDifference = sun.Position - Position;
double noonAngle = sunDifference.Angle();
TimeSpan noonOffset = new TimeSpan(localTime.Hour, localTime.Minute, localTime.Second) - new TimeSpan(12, 0, 0);
return(noonAngle + noonOffset.TotalSeconds * RotationRate);
}
public ReEntryFlame(int maxParticles, double particleRate, DVector2 offset)
: base(maxParticles, Color.FromArgb(50, 255, 255, 0))
{
_random = new Random();
_particleRate = particleRate;
_offsetAngle = offset.Angle();
_offsetLength = offset.Length();
}
public void ResolveAtmopsherics(IMassiveBody body)
{
DVector2 difference = body.Position - Position;
double distance = difference.Length();
difference.Normalize();
double altitude = distance - body.SurfaceRadius;
// The object is in the atmosphere of body B
if (altitude < body.AtmosphereHeight)
{
var surfaceNormal = new DVector2(-difference.Y, difference.X);
double altitudeFromCenter = altitude + body.SurfaceRadius;
// Distance of circumference at this altitude ( c= 2r * pi )
double pathCirumference = 2 * Math.PI * altitudeFromCenter;
double rotationalSpeed = pathCirumference / body.RotationPeriod;
// Simple collision detection
if (altitude <= 0)
{
var normal = new DVector2(-difference.X, -difference.Y);
Position = body.Position + normal * (body.SurfaceRadius);
Velocity = (body.Velocity + surfaceNormal * rotationalSpeed);
Rotation = normal.Angle();
AccelerationN.X = -AccelerationG.X;
AccelerationN.Y = -AccelerationG.Y;
}
double atmosphericDensity = body.GetAtmosphericDensity(altitude);
DVector2 relativeVelocity = (body.Velocity + surfaceNormal * rotationalSpeed) - Velocity;
double velocityMagnitude = relativeVelocity.LengthSquared();
if (velocityMagnitude > 0)
{
relativeVelocity.Normalize();
// Drag ( Fd = 0.5pv^2dA )
DVector2 dragForce = relativeVelocity * (0.5 * atmosphericDensity * velocityMagnitude * DragCoefficient * CrossSectionalArea);
AccelerationD += dragForce / Mass;
}
}
}
public Skid(ISpaceCraft parent, DVector2 offset, bool isLeft)
{
_parent = parent;
_isLeft = isLeft;
_offsetLength = -offset.Length();
_offsetRotation = offset.Angle() + Math.PI / 2.0;
_texture = isLeft ? new Bitmap("Textures/Spacecrafts/NewGlenn/landingLegLeft.png") :
new Bitmap("Textures/Spacecrafts/NewGlenn/landingLegRight.png");
}
protected StructureBase(DVector2 relativePosition, string texturePath, IMassiveBody parent)
{
_parent = parent;
_initialDistance = relativePosition.Length();
_rotationOffset = relativePosition.Angle();
_initialRotation = parent.Rotation;
_texture = new Bitmap(texturePath);
}
public GridFin(ISpaceCraft parent, DVector2 offset, bool isLeft)
{
_parent = parent;
_isLeft = isLeft;
_offsetLength = offset.Length();
_offsetRotation = _offsetRotation = offset.Angle() - Math.PI / 2.0;
_texture = isLeft ? new Bitmap("Textures/Spacecrafts/Falcon/Common/gridFinLeft.png") :
new Bitmap("Textures/Spacecrafts/Falcon/Common//gridFinRight.png");
}
public Parachute(ISpaceCraft parent, DVector2 offset)
{
_parent = parent;
_offsetLength = offset.Length();
_offsetRotation = offset.Angle();
//Pitch = -Math.PI / 2.0;
Pitch = Math.PI / 2.0 + Math.PI / 12.0;
_texture = new Bitmap("Textures/Spacecrafts/Falcon/Common/parachutes.png");
}
public void SetRelativePitch(double pitch)
{
DVector2 difference = GravitationalParent.Position - Position;
difference.Normalize();
double surfaceNormal = difference.Angle() - Constants.PiOverTwo;
Pitch = surfaceNormal + pitch;
foreach (ISpaceCraft child in Children)
{
child.SetRelativePitch(pitch);
}
}
public Fin(ISpaceCraft parent, DVector2 offset, DVector2 size, double dihedral = 0.0, string texturePath = "Textures/Spacecrafts/ITS/Fin.png")
: base(parent, texturePath)
{
_width = size.X;
_height = size.Y;
Width = _width;
Height = _height;
Dihedral = dihedral;
DrawingOffset = 0.0;
_offsetLength = offset.Length();
_offsetRotation = offset.Angle() - Constants.PiOverTwo;
}
public Parachute(ISpaceCraft parent, DVector2 offset, bool isLeft)
{
_parent = parent;
_offsetLength = offset.Length();
_offsetRotation = offset.Angle() - Math.PI / 2.0;
if (isLeft)
{
_texture = new Bitmap("Textures/Spacecrafts/Falcon/Common/parachuteLeft.png");
}
else
{
_texture = new Bitmap("Textures/Spacecrafts/Falcon/Common/parachuteRight.png");
}
}
public ReEntryFlame(int maxParticles, double particleRate, DVector2 offset)
{
_random = new Random();
_particles = new Particle[maxParticles];
_availableParticles = new Queue <int>(maxParticles);
for (int i = 0; i < maxParticles; i++)
{
_particles[i] = new Particle();
_availableParticles.Enqueue(i);
}
_particleRate = particleRate;
_offsetAngle = offset.Angle();
_offsetLength = offset.Length();
}
// Interpolate between current and target orientation over the duration
public override void Update(double elapsedTime, ISpaceCraft spaceCraft)
{
DVector2 prograde = spaceCraft.GetRelativeVelocity();
prograde.Normalize();
double retrogradeAngle = prograde.Angle();
double adjustRatio = (elapsedTime - StartTime) / _adjustmentTime;
if (adjustRatio > 1)
{
spaceCraft.SetRotation(retrogradeAngle);
}
else
{
double interpolatedAdjust = _curentOrientation * (1 - adjustRatio) + retrogradeAngle * adjustRatio;
spaceCraft.SetRotation(interpolatedAdjust);
}
}
public virtual void Update(double dt)
{
ElapsedTime += dt;
if (IsPrograde)
{
DVector2 prograde = SpaceCraft.GetRelativeVelocity();
prograde.Normalize();
SpaceCraft.SetRotation(prograde.Angle());
}
if (IsRetrograde)
{
DVector2 retrograde = SpaceCraft.GetRelativeVelocity();
retrograde.Negate();
retrograde.Normalize();
SpaceCraft.SetRotation(retrograde.Angle());
}
}
/// <summary>
/// Stages the spacecraft according to its mounted angle by applying a normal force.
/// </summary>
public void Stage()
{
if (Children.Count > 0)
{
ISpaceCraft[] children = Children.ToArray();
foreach (ISpaceCraft child in children)
{
child.Stage();
}
}
else if (Parent != null)
{
Parent.RemoveChild(this);
Parent = null;
// Simulate simple staging mechanism
double sAngle = StageOffset.Angle();
DVector2 stagingVector = DVector2.FromAngle(Rotation + sAngle + Math.PI * 0.5);
AccelerationN += stagingVector * 1000;
}
}
