From 3c487c5cd69c53d6fea948643c0a76df03516605 Mon Sep 17 00:00:00 2001 From: Aki Date: Fri, 1 Apr 2022 21:23:39 +0200 Subject: Moved Stars45 to StarsEx --- StarsEx/CameraDirector.cpp | 1194 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1194 insertions(+) create mode 100644 StarsEx/CameraDirector.cpp (limited to 'StarsEx/CameraDirector.cpp') diff --git a/StarsEx/CameraDirector.cpp b/StarsEx/CameraDirector.cpp new file mode 100644 index 0000000..7da704c --- /dev/null +++ b/StarsEx/CameraDirector.cpp @@ -0,0 +1,1194 @@ +/* Starshatter: The Open Source Project + Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors + Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors + Copyright (c) 1997-2006, Destroyer Studios LLC. + + AUTHOR: John DiCamillo + + + OVERVIEW + ======== + Camera Director singleton manages the main view camera based on the current ship +*/ + +#include "CameraDirector.h" +#include "Ship.h" +#include "FlightDeck.h" +#include "Contact.h" +#include "Sim.h" +#include "StarSystem.h" +#include "Terrain.h" +#include "HUDView.h" +#include "DetailSet.h" +#include "Starshatter.h" + +#include "Game.h" + +// +----------------------------------------------------------------------+ + +CameraDirector* CameraDirector::instance = 0; + +static double range_max_limit = 300e3; + +// +----------------------------------------------------------------------+ + +CameraDirector* +CameraDirector::GetInstance() +{ + if (!instance) + instance = new CameraDirector; + + return instance; +} + +// +----------------------------------------------------------------------+ + +CameraDirector::CameraDirector() + : mode(MODE_COCKPIT), requested_mode(MODE_NONE), old_mode(MODE_NONE), + sim(0), ship(0), region(0), external_ship(0), external_body(0), + virt_az(0), virt_el(0), virt_x(0), virt_y(0), virt_z(0), + azimuth(PI/4), elevation(PI/4), az_rate(0), el_rate(0), range_rate(0), + range(0), range_min(100), range_max(range_max_limit), + base_range(0), transition(0), hud(0) +{ + instance = this; +} + +// +--------------------------------------------------------------------+ + +CameraDirector::~CameraDirector() +{ + if (instance == this) + instance = 0; +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::Reset() +{ + mode = MODE_COCKPIT; + requested_mode = MODE_NONE; + old_mode = MODE_NONE; + + sim = 0; + ship = 0; + region = 0; + external_ship = 0; + external_body = 0; + transition = 0; + hud = 0; +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::SetShip(Ship* s) +{ + sim = Sim::GetSim(); + hud = HUDView::GetInstance(); + + // can't take control of a dead ship: + if (s && (s->Life() == 0 || s->IsDying() || s->IsDead())) + return; + + // leaving the old ship, so make sure it is visible: + if (ship && ship != s) { + ship->ShowRep(); + ship->HideCockpit(); + } + + // taking control of the new ship: + ship = s; + + if (ship) { + Observe(ship); + region = ship->GetRegion(); + + if (sim && ship->GetRegion() != sim->GetActiveRegion()) + sim->ActivateRegion(ship->GetRegion()); + + range = ship->Radius() * 4; + + if (mode == MODE_COCKPIT) + mode = MODE_CHASE; + + SetMode(MODE_COCKPIT); + ExecFrame(0); + } +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::SetMode(int m, double t) +{ + if (requested_mode == m) + return; + + external_point = Point(); + + // save current mode for after transition: + if (m == MODE_DROP && mode != MODE_DROP) + old_mode = mode; + + // if manually leaving drop mode, forget about + // restoring the previous mode when the drop + // expires... + else if (m != MODE_DROP && mode == MODE_DROP) + old_mode = MODE_NONE; + + if (m == MODE_VIRTUAL && ship && !ship->Cockpit()) + return; + + if (mode == m) { + if (mode == MODE_TARGET || mode == MODE_ORBIT) + CycleViewObject(); + + return; + } + + if (m > MODE_NONE && m < MODE_LAST) { + if (m <= MODE_VIRTUAL) { + requested_mode = m; + transition = t; + external_ship = 0; + ClearGroup(); + + // no easy way to do a smooth transition between + // certain modes, so just go immediately: + if ((mode == MODE_TARGET && m == MODE_CHASE) || + (mode == MODE_COCKPIT && m == MODE_VIRTUAL) || + (mode == MODE_VIRTUAL && m == MODE_COCKPIT)) + { + mode = m; + requested_mode = 0; + transition = 0; + } + } + + else if (m == MODE_TRANSLATE || m == MODE_ZOOM) { + requested_mode = m; + transition = t; + base_range = range; + } + + else if (m >= MODE_DOCKING) { + mode = m; + transition = 0; + external_ship = 0; + ClearGroup(); + } + + virt_az = 0; + virt_el = 0; + virt_x = 0; + virt_y = 0; + virt_z = 0; + } +} + +// +--------------------------------------------------------------------+ + +static const char* get_camera_mode_name(int m) +{ + switch (m) { + default: + case CameraDirector::MODE_NONE: return ""; break; + case CameraDirector::MODE_COCKPIT: return ""; break; + case CameraDirector::MODE_CHASE: return "Chase Cam"; break; + case CameraDirector::MODE_TARGET: return "Padlock"; break; + case CameraDirector::MODE_THREAT: return "Threatlock"; break; + case CameraDirector::MODE_VIRTUAL: return "Virtual"; break; + case CameraDirector::MODE_ORBIT: + case CameraDirector::MODE_TRANSLATE: + case CameraDirector::MODE_ZOOM: return "Orbit Cam"; break; + case CameraDirector::MODE_DOCKING: return "Dock Cam"; break; + case CameraDirector::MODE_DROP: return ""; break; + } +} + +const char* +CameraDirector::GetModeName() +{ + int m = GetCameraMode(); + + if (m != CameraDirector::MODE_VIRTUAL) { + return get_camera_mode_name(m); + } + else if (instance) { + if (instance->virt_az > 30*DEGREES && instance->virt_az < 100*DEGREES) + return "RIGHT"; + + else if (instance->virt_az >= 100*DEGREES) + return "RIGHT-AFT"; + + else if (instance->virt_az < -30*DEGREES && instance->virt_az > -100*DEGREES) + return "LEFT"; + + else if (instance->virt_az <= -100*DEGREES) + return "LEFT-AFT"; + + else if (instance->virt_el > 15*DEGREES) + return "UP"; + + else if (instance->virt_el < -15*DEGREES) + return "DOWN"; + + return get_camera_mode_name(m); + } + + return ""; +} + +int +CameraDirector::GetCameraMode() +{ + if (instance) { + int op_mode = instance->mode; + if (instance->requested_mode > instance->mode) + op_mode = instance->requested_mode; + return op_mode; + } + + return 0; +} + +void +CameraDirector::SetCameraMode(int m, double t) +{ + if (instance) + instance->SetMode(m, t); +} + +// +--------------------------------------------------------------------+ + +double +CameraDirector::GetRangeLimit() +{ + return range_max_limit; +} + +void +CameraDirector::SetRangeLimit(double r) +{ + if (r >= 1e3) + range_max_limit = r; +} + +void +CameraDirector::SetRangeLimits(double min, double max) +{ + if (instance) { + instance->range_min = min; + instance->range_max = max; + } +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::ClearGroup() +{ + external_group.clear(); +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::CycleViewObject() +{ + if (!ship) return; + + Ship* current = external_ship; + external_ship = 0; + + ListIter iter = ship->ContactList(); + while (++iter && !external_ship) { + Contact* c = iter.value(); + Ship* c_ship = c->GetShip(); + + if (c_ship && !current) { + external_ship = c_ship; + } + + else if (current && c_ship == current) { + while (++iter && !external_ship) { + c = iter.value(); + if (c->ActLock()) + external_ship = c->GetShip(); + } + } + } + + if (external_ship != current) { + if (external_ship) { + if (external_ship->Life() == 0 || external_ship->IsDying() || external_ship->IsDead()) { + external_point = external_ship->Location(); + external_ship = 0; + } + else { + Observe(external_ship); + } + } + + if (mode == MODE_ORBIT) { + SetMode(MODE_TRANSLATE); + ExternalRange(1); + } + } +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::SetViewOrbital(Orbital* orb) +{ + external_body = orb; + + if (external_body) { + range_min = external_body->Radius() * 2.5; + ClearGroup(); + external_ship = 0; + + if (sim) { + region = sim->FindNearestSpaceRegion(orb); + if (region) + sim->ActivateRegion(region); + } + + if (ship && !region) + region = ship->GetRegion(); + } +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::SetViewObject(Ship* obj, bool quick) +{ + if (!ship) return; + if (!obj) { + obj = ship; + region = ship->GetRegion(); + } + + external_body = 0; + external_point = Point(); + + Starshatter* stars = Starshatter::GetInstance(); + + if (obj->GetIFF() != ship->GetIFF() && !stars->InCutscene()) { + // only view solid contacts: + Contact* c = ship->FindContact(obj); + if (!c || !c->ActLock()) + return; + } + + if (mode == MODE_TARGET) { + ClearGroup(); + if (external_ship) { + external_ship = 0; + } + } + else if (mode >= MODE_ORBIT) { + if (quick) { + mode = MODE_ORBIT; + transition = 0; + } + else { + SetMode(MODE_TRANSLATE); + } + + if (external_group.size()) { + ClearGroup(); + + if (external_ship) { + external_ship = 0; + } + } + + else { + if ((obj == external_ship) || (obj==ship && external_ship==0)) { + if (!quick) + SetMode(MODE_ZOOM); + } + + else if (external_ship) { + external_ship = 0; + } + } + } + + if (external_ship != obj) { + external_ship = obj; + + if (external_ship) { + region = external_ship->GetRegion(); + + if (external_ship->Life() == 0 || external_ship->IsDying() || external_ship->IsDead()) { + external_ship = 0; + range_min = 100; + } + else { + Observe(external_ship); + + if (sim) + sim->ActivateRegion(external_ship->GetRegion()); + + range_min = external_ship->Radius() * 1.5; + } + } + + Observe(external_ship); + ExternalRange(1); + } +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::SetViewObjectGroup(ListIter group, bool quick) +{ + if (!ship) return; + + Starshatter* stars = Starshatter::GetInstance(); + + if (!stars->InCutscene()) { + // only view solid contacts: + while (++group) { + Ship* s = group.value(); + + if (s->GetIFF() != ship->GetIFF()) { + Contact* c = ship->FindContact(s); + if (!c || !c->ActLock()) + return; + } + + if (s->Life() == 0 || s->IsDying() || s->IsDead()) + return; + } + } + + group.reset(); + + if (external_group.size() > 1 && + external_group.size() == group.size()) { + + bool same = true; + + for (int i = 0; same && i < external_group.size(); i++) { + if (external_group[i] != group.container()[i]) + same = false; + } + + if (same) { + SetMode(MODE_ZOOM); + return; + } + } + + ClearGroup(); + + if (quick) { + mode = MODE_ORBIT; + transition = 0; + } + else { + SetMode(MODE_TRANSLATE); + } + + external_group.append(group.container()); + + ListIter iter = external_group; + while (++iter) { + Ship* s = iter.value(); + region = s->GetRegion(); + Observe(s); + } +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::VirtualHead(double az, double el) +{ + if (mode == MODE_VIRTUAL || mode == MODE_TARGET || mode == MODE_COCKPIT) { + const double alimit = 3*PI/4; + const double e_lo = PI/8; + const double e_hi = PI/3; + const double escale = e_hi; + + virt_az = az * alimit; + virt_el = el * escale; + + if (virt_az > alimit) + virt_az = alimit; + + else if (virt_az < -alimit) + virt_az = -alimit; + + if (virt_el > e_hi) + virt_el = e_hi; + + else if (virt_el < -e_lo) + virt_el = -e_lo; + } +} + +void +CameraDirector::VirtualHeadOffset(double x, double y, double z) +{ + if (mode == MODE_VIRTUAL || mode == MODE_TARGET || mode == MODE_COCKPIT) { + virt_x = x; + virt_y = y; + virt_z = z; + } +} + +void +CameraDirector::VirtualAzimuth(double delta) +{ + if (mode == MODE_VIRTUAL || mode == MODE_TARGET || mode == MODE_COCKPIT) { + virt_az += delta; + + const double alimit = 3*PI/4; + + if (virt_az > alimit) + virt_az = alimit; + + else if (virt_az < -alimit) + virt_az = -alimit; + } +} + +void +CameraDirector::VirtualElevation(double delta) +{ + if (mode == MODE_VIRTUAL || mode == MODE_TARGET || mode == MODE_COCKPIT) { + virt_el += delta; + + const double e_lo = PI/8; + const double e_hi = PI/3; + + if (virt_el > e_hi) + virt_el = e_hi; + + else if (virt_el < -e_lo) + virt_el = -e_lo; + } +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::ExternalAzimuth(double delta) +{ + azimuth += delta; + + if (azimuth > PI) + azimuth = -2*PI + azimuth; + + else if (azimuth < -PI) + azimuth = 2*PI + azimuth; +} + +void +CameraDirector::ExternalElevation(double delta) +{ + elevation += delta; + + const double limit = (0.43 * PI); + + if (elevation > limit) + elevation = limit; + else if (elevation < -limit) + elevation = -limit; +} + +void +CameraDirector::ExternalRange(double delta) +{ + range *= delta; + + if (ship && ship->IsAirborne()) + range_max = 30e3; + else + range_max = range_max_limit; + + if (range < range_min) + range = range_min; + + else if (range > range_max) + range = range_max; +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::SetOrbitPoint(double a, double e, double r) +{ + azimuth = a; + elevation = e; + range = r; + + if (external_body) { + if (range < external_body->Radius() * 2) + range = external_body->Radius() * 2; + + else if (range > external_body->Radius() * 6) + range = external_body->Radius() * 6; + } + + else { + if (range < range_min) + range = range_min; + + else if (range > range_max) + range = range_max; + } +} + +void +CameraDirector::SetOrbitRates(double ar, double er, double rr) +{ + az_rate = ar; + el_rate = er; + + range_rate = rr; +} + +// +--------------------------------------------------------------------+ + +bool +CameraDirector::Update(SimObject* obj) +{ + if (obj->Type() == SimObject::SIM_SHIP) { + Ship* s = (Ship*) obj; + if (ship == s) + ship = 0; + + if (external_ship == s) { + external_point = s->Location(); + external_ship = 0; + } + + if (external_group.contains(s)) + external_group.remove(s); + } + + return SimObserver::Update(obj); +} + +const char* +CameraDirector::GetObserverName() const +{ + return "CameraDirector"; +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::ExecFrame(double seconds) +{ + if (!ship) + return; + + hud = HUDView::GetInstance(); + + int flight_phase = ship->GetFlightPhase(); + + if (flight_phase < Ship::LOCKED) + SetMode(MODE_DOCKING); + + if (ship->IsAirborne()) { + if (flight_phase >= Ship::DOCKING) + SetMode(MODE_DOCKING); + } + else { + if (flight_phase >= Ship::RECOVERY) + SetMode(MODE_DOCKING); + } + + if (flight_phase >= Ship::LOCKED && flight_phase < Ship::ACTIVE) { + int m = GetMode(); + if (m != MODE_COCKPIT && m != MODE_VIRTUAL) + SetMode(MODE_COCKPIT); + } + + if (ship->InTransition()) { + SetMode(MODE_DROP); + } + // automatically restore mode after transition: + else if (old_mode != MODE_NONE) { + mode = old_mode; + requested_mode = old_mode; + old_mode = MODE_NONE; + } + + int op_mode = mode; + if (requested_mode > mode) + op_mode = requested_mode; + + Starshatter* stars = Starshatter::GetInstance(); + + // if we are in padlock, and have not locked a ship + // try to padlock the current target: + if (op_mode == MODE_TARGET && !external_ship) { + SimObject* tgt = ship->GetTarget(); + if (tgt && tgt->Type() == SimObject::SIM_SHIP) + SetViewObject((Ship*) tgt); + } + + // if in an external mode, check the external ship: + else if (op_mode >= MODE_TARGET && op_mode <= MODE_ZOOM) { + if (external_ship && external_ship != ship && !stars->InCutscene()) { + Contact* c = ship->FindContact(external_ship); + if (!c || !c->ActLock()) { + SetViewObject(ship); + } + } + } + + if (ship->Rep()) { + if (op_mode == MODE_COCKPIT) { + ship->HideRep(); + ship->HideCockpit(); + } + else if (op_mode == MODE_VIRTUAL || op_mode == MODE_TARGET) { + if (ship->Cockpit()) { + ship->HideRep(); + ship->ShowCockpit(); + } + else { + ship->ShowRep(); + } + } + else { + ship->Rep()->SetForeground(op_mode == MODE_DOCKING); + ship->ShowRep(); + ship->HideCockpit(); + } + } + + if (hud && hud->Ambient() != Color::Black) + sim->GetScene()->SetAmbient( hud->Ambient() ); + else + sim->GetScene()->SetAmbient( sim->GetStarSystem()->Ambient() ); + + switch (op_mode) { + default: + case MODE_COCKPIT: Cockpit(seconds); break; + case MODE_CHASE: Chase(seconds); break; + case MODE_TARGET: Target(seconds); break; + case MODE_THREAT: Threat(seconds); break; + case MODE_VIRTUAL: Virtual(seconds); break; + case MODE_ORBIT: + case MODE_TRANSLATE: + case MODE_ZOOM: Orbit(seconds); break; + case MODE_DOCKING: Docking(seconds); break; + case MODE_DROP: Drop(seconds); break; + } + + if (ship->Shake() > 0 && + (op_mode < MODE_ORBIT || + (op_mode == MODE_VIRTUAL && ship->Cockpit()))) { + + Point vib = ship->Vibration() * 0.2; + camera.MoveBy(vib); + camera.Aim(0, vib.y, vib.z); + } + + Transition(seconds); + DetailSet::SetReference(region, camera.Pos()); +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::Transition(double seconds) +{ + if (transition > 0) + transition -= seconds * 1.5; + + if (transition <= 0) { + transition = 0; + + if (requested_mode && requested_mode != mode) + mode = requested_mode; + + requested_mode = 0; + + if (mode == MODE_TRANSLATE || mode == MODE_ZOOM) { + if (mode == MODE_ZOOM) + range = range_min; + + mode = MODE_ORBIT; + } + } +} + +// +--------------------------------------------------------------------+ + +bool +CameraDirector::IsViewCentered() +{ + if (instance) { + double fvaz = fabs(instance->virt_az); + double fvel = fabs(instance->virt_el); + + return fvaz < 15*DEGREES && fvel < 15*DEGREES; + } + + return true; +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::Cockpit(double seconds) +{ + camera.Clone(ship->Cam()); + + Point bridge = ship->BridgeLocation(); + Point cpos = camera.Pos() + + camera.vrt() * bridge.x + + camera.vpn() * bridge.y + + camera.vup() * bridge.z; + + camera.MoveTo(cpos); +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::Virtual(double seconds) +{ + camera.Clone(ship->Cam()); + + Point bridge = ship->BridgeLocation(); + Point cpos = camera.Pos() + + camera.vrt() * (bridge.x + virt_x) + + camera.vpn() * (bridge.y + virt_z) + + camera.vup() * (bridge.z + virt_y); + + camera.MoveTo(cpos); + + camera.Yaw(virt_az); + camera.Pitch(-virt_el); + + double fvaz = fabs(virt_az); + double fvel = fabs(virt_el); + + if (fvaz > 0.01*DEGREES && fvaz < 15*DEGREES) { + double bleed = fvaz * 2; + + if (virt_az > 0) + virt_az -= bleed * seconds; + else + virt_az += bleed * seconds; + } + + if (fvel > 0.01*DEGREES && fvel < 15*DEGREES) { + double bleed = fvel; + + if (virt_el > 0) + virt_el -= bleed * seconds; + else + virt_el += bleed * seconds; + } +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::Chase(double seconds) +{ + double step = 1; + + if (requested_mode == MODE_COCKPIT) + step = transition; + + else if (requested_mode == MODE_CHASE) + step = 1 - transition; + + camera.Clone(ship->Cam()); + Point velocity = camera.vpn(); + + if (ship->Velocity().length() > 10) { + velocity = ship->Velocity(); + velocity.Normalize(); + velocity *= 0.25; + velocity += camera.vpn() * 2; + velocity.Normalize(); + } + + Point chase = ship->ChaseLocation(); + Point bridge = ship->BridgeLocation(); + Point cpos = camera.Pos() + + camera.vrt() * bridge.x * (1-step) + + camera.vpn() * bridge.y * (1-step) + + camera.vup() * bridge.z * (1-step) + + velocity * chase.y * step + + camera.vup() * chase.z * step; + + camera.MoveTo(cpos); +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::Target(double seconds) +{ + Point target_loc = external_point; + + if (external_ship) + target_loc = external_ship->Location(); + + if (!external_ship || external_ship == ship) { + if (!external_point) { + if (ship->Cockpit()) + Virtual(seconds); + else + Orbit(seconds); + + return; + } + } + + double step = 1; + + if (requested_mode == MODE_COCKPIT) + step = transition; + + else if (requested_mode == MODE_TARGET) + step = 1 - transition; + + if (ship->Cockpit()) { + // internal padlock: + Cockpit(seconds); + camera.Padlock(target_loc, 3*PI/4, PI/8, PI/3); + } + else { + // external padlock: + Point delta = target_loc - ship->Location(); + delta.Normalize(); + delta *= -5 * ship->Radius() * step; + delta.y += ship->Radius() * step; + + camera.MoveTo(ship->Location() + delta); + camera.LookAt(target_loc); + } +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::Threat(double seconds) +{ + Chase(seconds); +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::Orbit(double seconds) +{ + Point cpos = ship->Location(); + int op_mode = GetCameraMode(); + + if (seconds < 0) seconds = 0; + else if (seconds > 0.2) seconds = 0.2; + + // auto rotate + azimuth += az_rate * seconds; + elevation += el_rate * seconds; + range *= 1 + range_rate * seconds; + + if (external_body && external_body->Rep()) { + range_min = external_body->Radius() * 2.5; + cpos = external_body->Rep()->Location(); + } + + else if (external_group.size()) { + Point neg(1e9, 1e9, 1e9); + Point pos(-1e9, -1e9, -1e9); + + ListIter iter(external_group); + while (++iter) { + Point loc = iter->Location(); + + if (loc.x < neg.x) neg.x = loc.x; + if (loc.x > pos.x) pos.x = loc.x; + if (loc.y < neg.y) neg.y = loc.y; + if (loc.y > pos.y) pos.y = loc.y; + if (loc.z < neg.z) neg.z = loc.z; + if (loc.z > pos.z) pos.z = loc.z; + } + + double dx = pos.x - neg.x; + double dy = pos.y - neg.y; + double dz = pos.z - neg.z; + + if (dx > dy) { + if (dx > dz) range_min = dx * 1.2; + else range_min = dz * 1.2; + } + else { + if (dy > dz) range_min = dy * 1.2; + else range_min = dz * 1.2; + } + + // focus on median location: + cpos = neg + Point(dx/2, dy/2, dz/2); + } + else if (external_ship) { + range_min = external_ship->Radius() * 1.5; + cpos = external_ship->Location(); + } + else { + range_min = ship->Radius() * 1.5; + cpos = ship->Location(); + } + + if (range < range_min) + range = range_min; + + double er = range; + double az = azimuth; + double el = elevation; + + if (requested_mode == MODE_TRANSLATE) { + cpos = cpos*(1-transition) + base_loc*(transition); + } + + else if (requested_mode == MODE_ZOOM) { + er = base_range * transition; + + if (er < range_min) { + er = range_min; + range = range_min; + transition = 0; + requested_mode = 0; + } + } + + // transitions: + else if (mode < MODE_ORBIT || requested_mode > 0 && requested_mode < MODE_ORBIT) { + double az0 = ship->CompassHeading(); + if (fabs(az-az0) > PI) az0 -= 2*PI; + + double r0 = 0; + double z0 = 0; + + if (mode == MODE_CHASE || requested_mode == MODE_CHASE || + mode == MODE_TARGET || requested_mode == MODE_TARGET) { + r0 = ship->ChaseLocation().length(); + z0 = 20 * DEGREES; + } + + // pull out: + if (mode < MODE_ORBIT) { + er *= (1-transition); + az *= (1-transition); + el *= (1-transition); + + er += r0 * transition; + az += az0 * transition; + el += z0 * transition; + } + + // push in: + else { + er *= transition; + az *= transition; + el *= transition; + + er += r0 * (1-transition); + az += az0 * (1-transition); + el += z0 * (1-transition); + } + } + + else { + // save base location for next time we re-focus + base_loc = cpos; + } + + double dx = er * sin(az) * cos(el); + double dy = er * cos(az) * cos(el); + double dz = er * sin(el); + + Point cloc = cpos + Point(dx,dz,dy); + + Terrain* terrain = ship->GetRegion()->GetTerrain(); + + if (terrain) { + double cam_agl = cloc.y - terrain->Height(cloc.x, cloc.z); + + if (cam_agl < 100) + cloc.y = terrain->Height(cloc.x, cloc.z) + 100; + } + + if (external_ship == 0 && er < 0.5 * ship->Radius()) + ship->Rep()->Hide(); + + camera.MoveTo(cloc.x, cloc.y, cloc.z); + camera.LookAt(cpos); +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::Docking(double seconds) +{ + FlightDeck* dock = ship->GetDock(); + + if (!dock) { + Cockpit(seconds); + return; + } + + if (!ship->IsAirborne()) + sim->GetScene()->SetAmbient(Color(120,130,140)); + int flight_phase = ship->GetFlightPhase(); + + Point bridge = ship->BridgeLocation(); + Point cloc = ship->Location() + + ship->Cam().vrt() * bridge.x + + ship->Cam().vpn() * bridge.y + + ship->Cam().vup() * bridge.z; + + Point cpos = dock->CamLoc(); + + // preflight: + if (flight_phase < Ship::LOCKED) { + base_loc = cpos; + } + + else if (flight_phase == Ship::LOCKED) { + if (hud) + hud->SetHUDMode(HUDView::HUD_MODE_TAC); + cpos = base_loc * transition + + cloc * (1-transition); + } + + // recovery: + else if (flight_phase > Ship::APPROACH) { + if (hud) + hud->SetTacticalMode(1); + } + + camera.MoveTo(cpos); + camera.LookAt(cloc); +} + +// +--------------------------------------------------------------------+ + +void +CameraDirector::Drop(double seconds) +{ + // orbital transitions use "drop cam" at transition_loc + camera.MoveTo(ship->TransitionLocation()); + camera.LookAt(ship->Location()); +} -- cgit v1.1