Steer
StarshipAI::SeekTarget()
{
if (navpt) {
SimRegion* self_rgn = ship->GetRegion();
SimRegion* nav_rgn = navpt->Region();
QuantumDrive* qdrive = ship->GetQuantumDrive();
if (self_rgn && !nav_rgn) {
nav_rgn = self_rgn;
navpt->SetRegion(nav_rgn);
}
bool use_farcaster = self_rgn != nav_rgn &&
(navpt->Farcast() ||
!qdrive ||
!qdrive->IsPowerOn() ||
qdrive->Status() < System::DEGRADED
);
if (use_farcaster) {
if (!farcaster) {
ListIter<Ship> s = self_rgn->Ships();
while (++s && !farcaster) {
if (s->GetFarcaster()) {
const Ship* dest = s->GetFarcaster()->GetDest();
if (dest && dest->GetRegion() == nav_rgn) {
farcaster = s->GetFarcaster();
}
}
}
}
if (farcaster) {
if (farcaster->GetShip()->GetRegion() != self_rgn)
farcaster = farcaster->GetDest()->GetFarcaster();
obj_w = farcaster->EndPoint();
distance = Point(obj_w - ship->Location()).length();
if (distance < 1000)
farcaster = 0;
}
}
else if (self_rgn != nav_rgn) {
QuantumDrive* q = ship->GetQuantumDrive();
if (q) {
if (q->ActiveState() == QuantumDrive::ACTIVE_READY) {
q->SetDestination(navpt->Region(), navpt->Location());
q->Engage();
}
}
}
}
return ShipAI::SeekTarget();
}
void
NavAI::FindObjective()
{
navpt = 0;
distance = 0;
// runway takeoff:
if (takeoff) {
obj_w = ship->Location() + ship->Heading() * 10e3;
obj_w.y = ship->Location().y + 2e3;
// transform into camera coords:
objective = Transform(obj_w);
ship->SetDirectorInfo(Game::GetText("ai.takeoff"));
return;
}
// PART I: Find next NavPoint:
if (ship->GetNavSystem())
navpt = ship->GetNextNavPoint();
complete = !navpt;
if (complete) return;
// PART II: Compute Objective from NavPoint:
Point npt = navpt->Location();
Sim* sim = Sim::GetSim();
SimRegion* self_rgn = ship->GetRegion();
SimRegion* nav_rgn = navpt->Region();
if (self_rgn && !nav_rgn) {
nav_rgn = self_rgn;
navpt->SetRegion(nav_rgn);
}
if (self_rgn == nav_rgn) {
if (farcaster) {
if (farcaster->GetShip()->GetRegion() != self_rgn)
farcaster = farcaster->GetDest()->GetFarcaster();
obj_w = farcaster->EndPoint();
}
else {
obj_w = npt.OtherHand();
}
// distance from self to navpt:
distance = Point(obj_w - self->Location()).length();
// transform into camera coords:
objective = Transform(obj_w);
if (!ship->IsStarship())
objective.Normalize();
if (farcaster && distance < 1000)
farcaster = 0;
}
// PART III: Deal with orbital transitions:
else if (ship->IsDropship()) {
if (nav_rgn->GetOrbitalRegion()->Primary() ==
self_rgn->GetOrbitalRegion()->Primary()) {
Point npt = nav_rgn->Location() - self_rgn->Location();
obj_w = npt.OtherHand();
// distance from self to navpt:
distance = Point(obj_w - ship->Location()).length();
// transform into camera coords:
objective = Transform(obj_w);
if (nav_rgn->IsAirSpace()) {
drop_state = -1;
}
else if (nav_rgn->IsOrbital()) {
drop_state = 1;
}
}
// PART IIIa: Deal with farcaster jumps:
else if (nav_rgn->IsOrbital() && self_rgn->IsOrbital()) {
ListIter<Ship> s = self_rgn->Ships();
while (++s && !farcaster) {
if (s->GetFarcaster()) {
const Ship* dest = s->GetFarcaster()->GetDest();
if (dest && dest->GetRegion() == nav_rgn) {
farcaster = s->GetFarcaster();
}
}
}
if (farcaster) {
Point apt = farcaster->ApproachPoint(0);
Point npt = farcaster->StartPoint();
double r1 = (ship->Location() - npt).length();
if (r1 > 50e3) {
obj_w = apt;
distance = r1;
objective = Transform(obj_w);
}
else {
double r2 = (ship->Location() - apt).length();
double r3 = (npt - apt).length();
if (r1+r2 < 1.2*r3) {
obj_w = npt;
distance = r1;
objective = Transform(obj_w);
}
else {
obj_w = apt;
distance = r2;
objective = Transform(obj_w);
}
}
}
}
}
// PART IV: Deal with quantum jumps:
else if (ship->IsStarship()) {
quantum_state = 1;
Point npt = nav_rgn->Location() + navpt->Location();
npt -= self_rgn->Location();
obj_w = npt.OtherHand();
// distance from self to navpt:
distance = Point(obj_w - ship->Location()).length();
// transform into camera coords:
objective = Transform(obj_w);
}
}