void CDockingPorts::UpdateDockingManeuvers (CSpaceObject *pOwner, DockingPort &Port)
// UpdateDockingManeuvers
//
// Updates the motion of a ship docking with a port
{
CShip *pShip = Port.pObj->AsShip();
ASSERT(pShip);
if (pShip == NULL)
return;
CVector vDest = pOwner->GetPos() + Port.vPos;
CVector vDestVel = pOwner->GetVel();
// Figure out how far we are from where we want to be
CVector vDelta = vDest - pShip->GetPos();
// Figure out if we're aligned
int iFinalRotation = pShip->AlignToRotationAngle(Port.iRotation);
// If the docking object is within the appropriate threshold
// of the port, then complete the docking sequence.
Metric rDelta2 = vDelta.Length2();
if (rDelta2 < DOCKING_THRESHOLD2
&& (pShip == g_pUniverse->GetPlayer() || iFinalRotation == pShip->GetRotation()))
{
pShip->Place(vDest);
pShip->UnfreezeControls();
IShipController *pController = pShip->GetController();
pController->SetManeuver(IShipController::NoRotation);
Port.iStatus = psInUse;
// Tell the owner that somone has docked with it first
// (We do this because sometimes we want to handle stuff
// in OnObjDocked before we show the player a dock screen)
if (pOwner
&& pOwner->HasOnObjDockedEvent()
&& pOwner != pShip
&& !pOwner->IsDestroyed()
&& pShip->IsSubscribedToEvents(pOwner))
pOwner->FireOnObjDocked(pShip, pOwner);
// Set the owner as "explored" (if the ship is the player)
if (pShip->IsPlayer())
pOwner->SetExplored();
// Dock
pShip->OnDocked(pOwner);
// Notify other subscribers
pShip->NotifyOnObjDocked(pOwner);
}
// Otherwise accelerate the ship towards the docking port
else
{
Metric rMaxSpeed = pShip->GetMaxSpeed();
Metric rMinSpeed = rMaxSpeed / 10.0;
// We slow down as we get closer
Metric rSpeed;
if (rDelta2 < FINAL_DOCKING2)
rSpeed = rMinSpeed;
else if (rDelta2 < FINAL_APPROACH2)
{
Metric rSpeedRange = rMaxSpeed - rMinSpeed;
Metric rDelta = sqrt(rDelta2);
rSpeed = rMinSpeed + (rSpeedRange * (rDelta - FINAL_DOCKING) / (FINAL_APPROACH - FINAL_DOCKING));
}
else
rSpeed = rMaxSpeed;
// Figure out the ideal velocity vector that we want to
// be following.
CVector vIdealVel = vDelta.Normal() * rSpeed;
// Calculate the delta v that we need
CVector vDeltaV = vIdealVel - pShip->GetVel();
// Rotate
if (!pShip->IsPlayer())
{
IShipController *pController = pShip->GetController();
// If we're close enough, align to rotation angle
if (rDelta2 < FINAL_APPROACH2)
pController->SetManeuver(CalcTurnManeuver(iFinalRotation, pShip->GetRotation(), pShip->GetRotationAngle()));
// Otherwise, align along delta v
else
pController->SetManeuver(CalcTurnManeuver(VectorToPolar(vDeltaV), pShip->GetRotation(), pShip->GetRotationAngle()));
// Don't let the AI thrust
pController->SetThrust(false);
}
// Accelerate
pShip->Accelerate(vDeltaV * pShip->GetMass() / 10000.0, g_SecondsPerUpdate);
pShip->ClipSpeed(rSpeed);
}
}
void CDockingPorts::UpdateAll (CSpaceObject *pOwner)
// UpdateAll
//
// UpdateAll
{
int i, j;
for (i = 0; i < m_iPortCount; i++)
{
if (m_pPort[i].iStatus == psDocking)
{
CShip *pShip = m_pPort[i].pObj->AsShip();
ASSERT(pShip);
if (pShip == NULL)
continue;
CVector vDest = pOwner->GetPos() + m_pPort[i].vPos;
CVector vDestVel = pOwner->GetVel();
// Figure out how far we are from where we want to be
CVector vDelta = vDest - pShip->GetPos();
// Figure out if we're aligned
int iFinalRotation = pShip->AlignToRotationAngle(m_pPort[i].iRotation);
// If the docking object is within the appropriate threshold
// of the port, then complete the docking sequence.
Metric rDelta2 = vDelta.Length2();
if (rDelta2 < DOCKING_THRESHOLD2
&& (pShip == g_pUniverse->GetPlayer() || iFinalRotation == pShip->GetRotation()))
{
pShip->Place(vDest);
pShip->UnfreezeControls();
IShipController *pController = pShip->GetController();
pController->SetManeuver(IShipController::NoRotation);
m_pPort[i].iStatus = psInUse;
// Tell the owner that somone has docked with it first
// (We do this because sometimes we want to handle stuff
// in OnObjDocked before we show the player a dock screen)
if (pOwner && pOwner->HasOnObjDockedEvent() && pOwner != pShip)
pOwner->OnObjDocked(pShip, pOwner);
// Dock
pShip->OnDocked(pOwner);
// Tell all objects in the system that a ship has docked
CSystem *pSystem = pShip->GetSystem();
for (j = 0; j < pSystem->GetObjectCount(); j++)
{
CSpaceObject *pObj = pSystem->GetObject(j);
if (pObj && pObj->HasOnObjDockedEvent() && pObj != pShip && pObj != pOwner)
pObj->OnObjDocked(pShip, pOwner);
}
}
// Otherwise accelerate the ship towards the docking port
else
{
Metric rMaxSpeed = pShip->GetMaxSpeed();
Metric rMinSpeed = rMaxSpeed / 10.0;
// We slow down as we get closer
Metric rSpeed;
if (rDelta2 < FINAL_DOCKING2)
rSpeed = rMinSpeed;
else if (rDelta2 < FINAL_APPROACH2)
{
Metric rSpeedRange = rMaxSpeed - rMinSpeed;
Metric rDelta = sqrt(rDelta2);
rSpeed = rMinSpeed + (rSpeedRange * (rDelta - FINAL_DOCKING) / (FINAL_APPROACH - FINAL_DOCKING));
}
else
rSpeed = rMaxSpeed;
// Figure out the ideal velocity vector that we want to
// be following.
CVector vIdealVel = vDelta.Normal() * rSpeed;
// Calculate the delta v that we need
CVector vDeltaV = vIdealVel - pShip->GetVel();
// Rotate
if (pShip != g_pUniverse->GetPlayer())
{
IShipController *pController = pShip->GetController();
// If we're close enough, align to rotation angle
if (rDelta2 < FINAL_APPROACH2)
pController->SetManeuver(CalcTurnManeuver(iFinalRotation, pShip->GetRotation(), pShip->GetRotationAngle()));
// Otherwise, align along delta v
else
pController->SetManeuver(CalcTurnManeuver(VectorToPolar(vDeltaV), pShip->GetRotation(), pShip->GetRotationAngle()));
}
// Accelerate
pShip->Accelerate(vDeltaV * pShip->GetMass() / 10000.0, g_SecondsPerUpdate);
pShip->ClipSpeed(rSpeed);
}
}
}
}
