From e33e19d0587146859d48a134ec9fd94e7b7ba5cd Mon Sep 17 00:00:00 2001 From: "FWoltermann@gmail.com" Date: Thu, 8 Dec 2011 14:53:40 +0000 Subject: Initial upload --- Stars45/Thruster.cpp | 595 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 595 insertions(+) create mode 100644 Stars45/Thruster.cpp (limited to 'Stars45/Thruster.cpp') diff --git a/Stars45/Thruster.cpp b/Stars45/Thruster.cpp new file mode 100644 index 0000000..a189a26 --- /dev/null +++ b/Stars45/Thruster.cpp @@ -0,0 +1,595 @@ +/* Project Starshatter 4.5 + Destroyer Studios LLC + Copyright © 1997-2004. All Rights Reserved. + + SUBSYSTEM: Stars.exe + FILE: Thruster.cpp + AUTHOR: John DiCamillo + + + OVERVIEW + ======== + Weapon class +*/ + +#include "MemDebug.h" +#include "Thruster.h" +#include "Component.h" +#include "Drive.h" +#include "FlightComp.h" +#include "SystemDesign.h" +#include "Ship.h" +#include "ShipDesign.h" +#include "Sim.h" +#include "CameraDirector.h" +#include "AudioConfig.h" +#include "Random.h" + +#include "Light.h" +#include "Bitmap.h" +#include "Sound.h" +#include "DataLoader.h" +#include "Bolt.h" +#include "Sprite.h" +#include "Game.h" + +// +----------------------------------------------------------------------+ + +static Sound* thruster_resource = 0; +static Sound* thruster_sound = 0; + +extern Bitmap* drive_flare_bitmap[8]; +extern Bitmap* drive_trail_bitmap[8]; + +#define CLAMP(x, a, b) if (x < (a)) x = (a); else if (x > (b)) x = (b); + +// +----------------------------------------------------------------------+ + +ThrusterPort::ThrusterPort(int t, const Point& l, DWORD f, float s) + : type(t), loc(l), flare(0), trail(0), fire(f), burn(0), scale(s) +{ } + +ThrusterPort::~ThrusterPort() +{ + GRAPHIC_DESTROY(flare); + GRAPHIC_DESTROY(trail); +} + +// +----------------------------------------------------------------------+ + +static int sys_value = 2; + +// +----------------------------------------------------------------------+ + +Thruster::Thruster(int dtype, double max_thrust, float flare_scale) + : System(DRIVE, dtype, "Thruster", sys_value, + max_thrust, max_thrust, max_thrust), + ship(0), thrust(1.0f), scale(flare_scale), + avail_x(1.0f), avail_y(1.0f), avail_z(1.0f) +{ + name = Game::GetText("sys.thruster"); + abrv = Game::GetText("sys.thruster.abrv"); + + power_flags = POWER_WATTS; + + ZeroMemory(burn, sizeof(burn)); + + emcon_power[0] = 50; + emcon_power[1] = 50; + emcon_power[2] = 100; +} + +// +----------------------------------------------------------------------+ + +Thruster::Thruster(const Thruster& t) + : System(t), ship(0), + thrust(1.0f), scale(t.scale), + avail_x(1.0f), avail_y(1.0f), avail_z(1.0f) +{ + power_flags = POWER_WATTS; + Mount(t); + + ZeroMemory(burn, sizeof(burn)); + + if (subtype != Drive::STEALTH) { + for (int i = 0; i < t.ports.size(); i++) { + ThrusterPort* p = t.ports[i]; + CreatePort(p->type, p->loc, p->fire, p->scale); + } + } +} + +// +--------------------------------------------------------------------+ + +Thruster::~Thruster() +{ + ports.destroy(); + + if (thruster_sound && thruster_sound->IsPlaying()) { + thruster_sound->Stop(); + } +} + +// +--------------------------------------------------------------------+ + +void +Thruster::Initialize() +{ + static int initialized = 0; + if (initialized) return; + + DataLoader* loader = DataLoader::GetLoader(); + + const int SOUND_FLAGS = Sound::LOCALIZED | + Sound::LOC_3D | + Sound::LOOP | + Sound::LOCKED; + + loader->SetDataPath("Sounds/"); + loader->LoadSound("thruster.wav", thruster_resource, SOUND_FLAGS); + loader->SetDataPath(0); + + if (thruster_resource) + thruster_resource->SetMaxDistance(15.0e3f); + + initialized = 1; +} + +void +Thruster::Close() +{ + delete thruster_resource; + thruster_resource = 0; + + if (thruster_sound) { + thruster_sound->Stop(); + thruster_sound->Release(); + } +} + +// +--------------------------------------------------------------------+ + +void +Thruster::Orient(const Physical* rep) +{ + System::Orient(rep); + + bool hide_all = false; + if (!ship || (ship->IsAirborne() && ship->Class() != Ship::LCA)) { + hide_all = true; + } + + if (ship->Rep() && ship->Rep()->Hidden()) { + hide_all = true; + } + + if (thrust <= 0) { + hide_all = true; + } + + const Matrix& orientation = rep->Cam().Orientation(); + Point ship_loc = rep->Location(); + + for (int i = 0; i < ports.size(); i++) { + ThrusterPort* p = ports[i]; + + Point projector = (p->loc * orientation) + ship_loc; + + if (p->flare) + p->flare->MoveTo(projector); + + if (p->trail) { + double intensity = p->burn; + + if (intensity > 0.5 && !hide_all) { + Bolt* t = (Bolt*) p->trail; + double len = -50 * p->scale * intensity; + + t->Show(); + + switch (p->type) { + case LEFT: t->SetEndPoints(projector, projector + rep->Cam().vrt() * len); break; + case RIGHT: t->SetEndPoints(projector, projector - rep->Cam().vrt() * len); break; + case AFT: t->SetEndPoints(projector, projector + rep->Cam().vpn() * len); break; + case FORE: t->SetEndPoints(projector, projector - rep->Cam().vpn() * len); break; + case BOTTOM: t->SetEndPoints(projector, projector + rep->Cam().vup() * len); break; + case TOP: t->SetEndPoints(projector, projector - rep->Cam().vup() * len); break; + default: t->Hide(); break; + } + } + else { + p->trail->Hide(); + if (p->flare) + p->flare->Hide(); + } + } + } +} + +// +--------------------------------------------------------------------+ + +void +Thruster::ExecFrame(double seconds) +{ + System::ExecFrame(seconds); + + if (ship) { + double rr = 0, pr = 0, yr = 0; + double rd = 0, pd = 0, yd = 0; + + double agility = 1; + double stability = 1; + + FlightComp* flcs = ship->GetFLCS(); + + if (flcs) { + if (!flcs->IsPowerOn() || flcs->Status() < DEGRADED) { + agility = 0.3; + stability = 0.0; + } + } + + // check for thruster damage here: + if (components.size() >= 3) { + int stat = components[0]->Status(); + if (stat == Component::NOMINAL) + avail_x = 1.0f; + else if (stat == Component::DEGRADED) + avail_x = 0.5f; + else + avail_x = 0.0f; + + stat = components[1]->Status(); + if (stat == Component::NOMINAL) + avail_z = 1.0f; + else if (stat == Component::DEGRADED) + avail_z = 0.5f; + else + avail_z = 0.0f; + + stat = components[2]->Status(); + if (stat == Component::NOMINAL) + avail_y = 1.0f; + else if (stat == Component::DEGRADED) + avail_y = 0.5f; + else + avail_y = 0.0f; + } + + // thrust limited by power distribution: + thrust = energy/capacity; + energy = 0.0f; + + if (thrust < 0) + thrust = 0.0f; + + agility *= thrust; + stability *= thrust; + + rr = roll_rate * agility * avail_y; + pr = pitch_rate * agility * avail_y; + yr = yaw_rate * agility * avail_x; + + rd = roll_drag * stability * avail_y; + pd = pitch_drag * stability * avail_y; + yd = yaw_drag * stability * avail_x; + + ship->SetAngularRates(rr,pr,yr); + ship->SetAngularDrag (rd,pd,yd); + } +} + +// +--------------------------------------------------------------------+ + +void +Thruster::SetShip(Ship* s) +{ + const double ROLL_SPEED = PI * 0.0400; + const double PITCH_SPEED = PI * 0.0250; + const double YAW_SPEED = PI * 0.0250; + + ship = s; + + if (ship) { + ShipDesign* design = (ShipDesign*) ship->Design(); + + trans_x = design->trans_x; + trans_y = design->trans_y; + trans_z = design->trans_z; + + roll_drag = design->roll_drag; + pitch_drag = design->pitch_drag; + yaw_drag = design->yaw_drag; + + roll_rate = (float) (design->roll_rate * PI / 180); + pitch_rate = (float) (design->pitch_rate * PI / 180); + yaw_rate = (float) (design->yaw_rate * PI / 180); + + double agility = design->agility; + + if (roll_rate == 0) roll_rate = (float) (agility * ROLL_SPEED); + if (pitch_rate == 0) pitch_rate = (float) (agility * PITCH_SPEED); + if (yaw_rate == 0) yaw_rate = (float) (agility * YAW_SPEED); + } +} + +// +--------------------------------------------------------------------+ + +double +Thruster::TransXLimit() +{ + return trans_x * avail_x; +} + +double +Thruster::TransYLimit() +{ + return trans_y * avail_y; +} + +double +Thruster::TransZLimit() +{ + return trans_z * avail_z; +} + +// +--------------------------------------------------------------------+ + +void +Thruster::ExecTrans(double x, double y, double z) +{ + if (!ship || (ship->IsAirborne() && ship->Class() != Ship::LCA)) { + if (thruster_sound && thruster_sound->IsPlaying()) + thruster_sound->Stop(); + + for (int i = 0; i < ports.size(); i++) { + ThrusterPort* p = ports[i]; + if (p->flare) p->flare->Hide(); + if (p->trail) p->trail->Hide(); + } + + return; + } + + bool sound_on = false; + bool show_flare = true; + + if (ship->Rep() && ship->Rep()->Hidden()) + show_flare = false; + + if (ship->Class() == Ship::LCA && + ship->IsAirborne() && + ship->Velocity().length() < 250 && + ship->AltitudeAGL() > ship->Radius()/2) { + + sound_on = true; + IncBurn(BOTTOM, TOP); + } + + else if (!ship->IsAirborne()) { + double tx_limit = ship->Design()->trans_x; + double ty_limit = ship->Design()->trans_y; + double tz_limit = ship->Design()->trans_z; + + if (x < -0.15 * tx_limit) IncBurn(RIGHT, LEFT); + else if (x > 0.15 * tx_limit) IncBurn(LEFT, RIGHT); + else DecBurn(LEFT, RIGHT); + + if (y < -0.15 * ty_limit) IncBurn(FORE, AFT); + else if (y > 0.15 * ty_limit) IncBurn(AFT, FORE); + else DecBurn(FORE, AFT); + + if (z < -0.15 * tz_limit) IncBurn(TOP, BOTTOM); + else if (z > 0.15 * tz_limit) IncBurn(BOTTOM, TOP); + else DecBurn(TOP, BOTTOM); + + double r, p, y; + ship->GetAngularThrust(r, p, y); + + // Roll seems to have the opposite sign from + // the pitch and yaw thrust factors. Not sure why. + + if (r > 0) IncBurn(ROLL_L, ROLL_R); + else if (r < 0) IncBurn(ROLL_R, ROLL_L); + else DecBurn(ROLL_R, ROLL_L); + + if (y < 0) IncBurn(YAW_L, YAW_R); + else if (y > 0) IncBurn(YAW_R, YAW_L); + else DecBurn(YAW_R, YAW_L); + + if (p < 0) IncBurn(PITCH_D, PITCH_U); + else if (p > 0) IncBurn(PITCH_U, PITCH_D); + else DecBurn(PITCH_U, PITCH_D); + } + + else { + for (int i = 0; i < 12; i++) { + burn[i] -= 0.1f; + if (burn[i] < 0) + burn[i] = 0.0f; + } + } + + for (int i = 0; i < ports.size(); i++) { + ThrusterPort* p = ports[i]; + + if (p->fire) { + p->burn = 0; + + int flag = 1; + + for (int n = 0; n < 12; n++) { + if ((p->fire & flag) != 0 && burn[n] > p->burn) + p->burn = burn[n]; + + flag <<= 1; + } + } + + else { + p->burn = burn[p->type]; + } + + if (p->burn > 0 && thrust > 0) { + sound_on = true; + + if (show_flare) { + Sprite* flare_rep = (Sprite*) p->flare; + if (flare_rep) { + flare_rep->Show(); + flare_rep->SetShade(1); + } + + if (p->trail) { + Bolt* t = (Bolt*) p->trail; + t->Show(); + t->SetShade(1); + } + } + } + else { + if (p->flare) p->flare->Hide(); + if (p->trail) p->trail->Hide(); + } + } + + // thruster sound: + if (ship && ship == Sim::GetSim()->GetPlayerShip() && ports.size() > 0) { + CameraDirector* cam_dir = CameraDirector::GetInstance(); + + // no sound when paused! + if (!Game::Paused() && cam_dir && cam_dir->GetCamera()) { + if (!thruster_sound) { + if (thruster_resource) + thruster_sound = thruster_resource->Duplicate(); + } + + if (thruster_sound) { + if (sound_on) { + Point cam_loc = cam_dir->GetCamera()->Pos(); + double dist = (ship->Location() - cam_loc).length(); + + long max_vol = AudioConfig::EfxVolume(); + long volume = -2000; + + if (volume > max_vol) + volume = max_vol; + + if (dist < thruster_sound->GetMaxDistance()) { + thruster_sound->SetLocation(ship->Location()); + thruster_sound->SetVolume(volume); + thruster_sound->Play(); + } + else if (thruster_sound->IsPlaying()) { + thruster_sound->Stop(); + } + } + else if (thruster_sound->IsPlaying()) { + thruster_sound->Stop(); + } + } + } + } + + ship->SetTransX(x * thrust); + ship->SetTransY(y * thrust); + ship->SetTransZ(z * thrust); +} + +// +--------------------------------------------------------------------+ + +void +Thruster::AddPort(int type, const Point& loc, DWORD fire, float flare_scale) +{ + if (flare_scale == 0) flare_scale = scale; + ThrusterPort* port = new(__FILE__,__LINE__) ThrusterPort(type, loc, fire, flare_scale); + ports.append(port); +} + +void +Thruster::CreatePort(int type, const Point& loc, DWORD fire, float flare_scale) +{ + Bitmap* flare_bmp = drive_flare_bitmap[subtype]; + Bitmap* trail_bmp = drive_trail_bitmap[subtype]; + + if (subtype != Drive::STEALTH) { + Sprite* flare_rep = new(__FILE__,__LINE__) Sprite(flare_bmp); + flare_rep->Scale(flare_scale * 0.667f); + flare_rep->SetShade(0); + + Bolt* trail_rep = new(__FILE__,__LINE__) Bolt(flare_scale * 30, flare_scale * 8, trail_bmp, true); + + ThrusterPort* port = new(__FILE__,__LINE__) ThrusterPort(type, loc, fire, flare_scale); + port->flare = flare_rep; + port->trail = trail_rep; + ports.append(port); + } +} + +// +--------------------------------------------------------------------+ + +int +Thruster::NumThrusters() const +{ + return ports.size(); +} + +Graphic* +Thruster::Flare(int engine) const +{ + if (engine >= 0 && engine < ports.size()) + return ports[engine]->flare; + + return 0; +} + +Graphic* +Thruster::Trail(int engine) const +{ + if (engine >= 0 && engine < ports.size()) + return ports[engine]->trail; + + return 0; +} + +// +--------------------------------------------------------------------+ + +void +Thruster::IncBurn(int inc, int dec) +{ + burn[inc] += 0.1f; + if (burn[inc] > 1) + burn[inc] = 1.0f; + + burn[dec] -= 0.1f; + if (burn[dec] < 0) + burn[dec] = 0.0f; +} + +void +Thruster::DecBurn(int a, int b) +{ + burn[a] -= 0.1f; + if (burn[a] < 0) + burn[a] = 0.0f; + + burn[b] -= 0.1f; + if (burn[b] < 0) + burn[b] = 0.0f; +} + +// +----------------------------------------------------------------------+ + +double +Thruster::GetRequest(double seconds) const +{ + if (!power_on) + return 0; + + for (int i = 0; i < 12; i++) + if (burn[i] != 0) + return power_level * sink_rate * seconds; + + return 0; +} + -- cgit v1.1