void Race::Update(double DeltaTime){ track.RefreshDetection(); for (unsigned i=0; i<Player.size() ; i++) { if (Player[i].DeathSwitch==0) { Player[i].Update(DeltaTime); } else{ Player[i].DeathUpdate(DeltaTime); } if (Player[i].RequestReset) { Player[i].RequestReset=0; ResetCar(i); } } UpdateTraction(); UpdateLaps(); HandleTraps(); HandlePlayerOnPlayerCollisions(); HandleWallCollisions(); HandleDeaths(); }
void PERFORMANCE_TESTING::TestStoppingDistance(bool abs, std::ostream & info_output, std::ostream & error_output) { info_output << "Testing stopping distance" << std::endl; ResetCar(); car.dynamics.SetABS(abs); double maxtime = 300.0; double t = 0.; double dt = .004; int i = 0; std::vector <float> inputs(CARINPUT::INVALID, 0.0); inputs[CARINPUT::THROTTLE] = 1.0; float stopthreshold = 0.1; //if the speed (in m/s) is less than this value, discontinue the testing btVector3 stopstart; //where the stopping starts float brakestartspeed = 26.82; //speed at which to start braking, in m/s (26.82 m/s is 60 mph) bool accelerating = true; //switches to false once 60 mph is reached while (t < maxtime) { if (accelerating) { inputs[CARINPUT::THROTTLE] = 1.0; inputs[CARINPUT::BRAKE] = 0.0; } else { inputs[CARINPUT::THROTTLE] = 0.0; inputs[CARINPUT::BRAKE] = 1.0; inputs[CARINPUT::NEUTRAL] = 1.0; } car.HandleInputs(inputs); world.update(dt); if (car.dynamics.GetSpeed() >= brakestartspeed && accelerating) //stop accelerating and hit the brakes { accelerating = false; stopstart = car.dynamics.GetWheelPosition(WHEEL_POSITION(0)); //std::cout << "hitting the brakes at " << t << ", " << car.dynamics.GetSpeed() << std::endl; } if (!accelerating && car.dynamics.GetSpeed() < stopthreshold) { break; } if (car.GetEngineRPM() < 1) { error_output << "Car stalled during launch, t=" << t << std::endl; break; } if (i % (int)(1.0/dt) == 0) //every second { //std::cout << t << ", " << car.dynamics.GetSpeed() << ", " << car.GetGear() << ", " << car.GetEngineRPM() << std::endl; } t += dt; i++; } btVector3 stopend = car.dynamics.GetWheelPosition(WHEEL_POSITION(0)); info_output << "60-0 stopping distance "; if (abs) info_output << "(ABS)"; else info_output << "(no ABS)"; info_output << ": " << ConvertToFeet((stopend-stopstart).length()) << " ft" << std::endl; }
void PERFORMANCE_TESTING::TestMaxSpeed(std::ostream & info_output, std::ostream & error_output) { info_output << "Testing maximum speed" << std::endl; ResetCar(); double maxtime = 300.0; double t = 0.; double dt = .004; int i = 0; std::vector <float> inputs(CARINPUT::INVALID, 0.0); inputs[CARINPUT::THROTTLE] = 1.0; std::pair <float, float> maxspeed; maxspeed.first = 0; maxspeed.second = 0; float lastsecondspeed = 0; float stopthreshold = 0.001; //if the accel (in m/s^2) is less than this value, discontinue the testing float timeto60start = 0; //don't start the 0-60 clock until the car is moving at a threshold speed to account for the crappy launch that the autoclutch gives float timeto60startthreshold = 2.23; //threshold speed to start 0-60 clock in m/s //float timeto60startthreshold = 0.01; //threshold speed to start 0-60 clock in m/s float timeto60 = maxtime; float timetoquarter = maxtime; float quarterspeed = 0; std::string downforcestr = "N/A"; while (t < maxtime) { car.HandleInputs(inputs); world.update(dt); if (car.dynamics.GetSpeed() > maxspeed.second) { maxspeed.first = t; maxspeed.second = car.dynamics.GetSpeed(); std::stringstream dfs; dfs << -car.GetTotalAero()[2] << " N; " << -car.GetTotalAero()[2]/car.GetTotalAero()[0] << ":1 lift/drag"; downforcestr = dfs.str(); } if (car.dynamics.GetSpeed() < timeto60startthreshold) timeto60start = t; if (car.dynamics.GetSpeed() < 26.8224) timeto60 = t; if (car.dynamics.GetCenterOfMass().length() > 402.3 && timetoquarter == maxtime) { //quarter mile! timetoquarter = t - timeto60start; quarterspeed = car.dynamics.GetSpeed(); } if (i % (int)(1.0/dt) == 0) //every second { if (1) { if (car.dynamics.GetSpeed() - lastsecondspeed < stopthreshold && car.dynamics.GetSpeed() > 26.0) { //info_output << "Maximum speed attained at " << maxspeed.first << " s" << std::endl; break; } if (car.GetEngineRPM() < 1) { error_output << "Car stalled during launch, t=" << t << std::endl; break; } } lastsecondspeed = car.dynamics.GetSpeed(); //std::cout << t << ", " << car.dynamics.GetSpeed() << ", " << car.GetGear() << ", " << car.GetEngineRPM() << std::endl; } t += dt; i++; } info_output << "Maximum speed: " << ConvertToMPH(maxspeed.second) << " MPH at " << maxspeed.first << " s" << std::endl; info_output << "Downforce at maximum speed: " << downforcestr << std::endl; info_output << "0-60 MPH time: " << timeto60-timeto60start << " s" << std::endl; info_output << "1/4 mile time: " << timetoquarter << " s" << " at " << ConvertToMPH(quarterspeed) << " MPH" << std::endl; }
void PerformanceTesting::TestStoppingDistance(bool abs, std::ostream & info_output, std::ostream & error_output) { info_output << "Testing stopping distance" << std::endl; float maxtime = 300.0; float t = 0.; float dt = 1/90.0; int i = 0; float stopthreshold = 0.1; //if the speed (in m/s) is less than this value, discontinue the testing btVector3 stopstart; //where the stopping starts float brakestartspeed = 26.82; //speed at which to start braking, in m/s (26.82 m/s is 60 mph) bool accelerating = true; //switches to false once 60 mph is reached ResetCar(); car.SetABS(abs); while (t < maxtime) { if (accelerating) { carinput[CarInput::THROTTLE] = 1.0f; carinput[CarInput::BRAKE] = 0.0f; } else { carinput[CarInput::THROTTLE] = 0.0f; carinput[CarInput::BRAKE] = 1.0f; } car.Update(carinput); world.update(dt); float car_speed = car.GetSpeed(); if (car_speed >= brakestartspeed && accelerating) //stop accelerating and hit the brakes { accelerating = false; stopstart = car.GetWheelPosition(WheelPosition(0)); //std::cout << "hitting the brakes at " << t << ", " << car_speed << std::endl; } if (!accelerating && car_speed < stopthreshold) { break; } if (!car.GetEngine().GetCombustion()) { error_output << "Car stalled during launch, t=" << t << std::endl; break; } if (i % (int)(1.0/dt) == 0) //every second { //std::cout << t << ", " << car.dynamics.GetSpeed() << ", " << car.GetGear() << ", " << car.GetEngineRPM() << std::endl; } t += dt; i++; } btVector3 stopend = car.GetWheelPosition(WheelPosition(0)); info_output << "60-0 stopping distance "; if (abs) info_output << "(ABS)"; else info_output << "(no ABS)"; info_output << ": " << ConvertToFeet((stopend-stopstart).length()) << " ft" << std::endl; }
void PerformanceTesting::TestMaxSpeed(std::ostream & info_output, std::ostream & error_output) { info_output << "Testing maximum speed" << std::endl; float maxtime = 300.0; float t = 0.; float dt = 1/90.0; int i = 0; std::pair <float, float> maxspeed; maxspeed.first = 0; maxspeed.second = 0; float lastsecondspeed = 0; float stopthreshold = 0.001; //if the accel (in m/s^2) is less than this value, discontinue the testing float timeto60start = 0; //don't start the 0-60 clock until the car is moving at a threshold speed to account for the crappy launch that the autoclutch gives float timeto60startthreshold = 2.23; //threshold speed to start 0-60 clock in m/s //float timeto60startthreshold = 0.01; //threshold speed to start 0-60 clock in m/s float timeto60 = maxtime; float timetoquarter = maxtime; float quarterspeed = 0; std::string downforcestr = "N/A"; ResetCar(); clock_t cpu_timer_start = clock(); while (t < maxtime) { if (car.GetTransmission().GetGear() == 1 && car.GetEngine().GetRPM() > 0.8 * car.GetEngine().GetRedline()) { carinput[CarInput::BRAKE] = 0.0f; } car.Update(carinput); world.update(dt); float car_speed = car.GetSpeed(); if (car_speed > maxspeed.second) { maxspeed.first = t; maxspeed.second = car.GetSpeed(); std::ostringstream dfs; dfs << -car.GetTotalAero()[2] << " N; " << -car.GetTotalAero()[2]/car.GetTotalAero()[0] << ":1 lift/drag"; downforcestr = dfs.str(); } if (car_speed < timeto60startthreshold) timeto60start = t; if (car_speed < 26.8224) timeto60 = t; if (car.GetCenterOfMass().length() > 402.3 && timetoquarter == maxtime) { //quarter mile! timetoquarter = t - timeto60start; quarterspeed = car_speed; } if (i % (int)(1.0/dt) == 0) //every second { if (1) { if (car_speed - lastsecondspeed < stopthreshold && car_speed > 26.0) { //info_output << "Maximum speed attained at " << maxspeed.first << " s" << std::endl; break; } if (!car.GetEngine().GetCombustion()) { error_output << "Car stalled during launch, t=" << t << std::endl; break; } } lastsecondspeed = car_speed; //std::cout << t << ", " << car_speed << ", " << car.GetGear() << ", " << car.GetEngineRPM() << std::endl; } t += dt; i++; } clock_t cpu_timer_stop = clock(); info_output << "Maximum speed: " << ConvertToMPH(maxspeed.second) << " MPH at " << maxspeed.first << " s" << std::endl; info_output << "Downforce at maximum speed: " << downforcestr << std::endl; info_output << "0-60 MPH time: " << timeto60 - timeto60start << " s" << std::endl; info_output << "1/4 mile time: " << timetoquarter << " s" << " at " << ConvertToMPH(quarterspeed) << " MPH" << std::endl; info_output << "Simulation performance: " << t / float(cpu_timer_stop - cpu_timer_start) * CLOCKS_PER_SEC << std::endl; }
void PerformanceTesting::TestStoppingDistance(bool abs, std::ostream & info_output, std::ostream & error_output) { info_output << "Testing stopping distance" << std::endl; float maxtime = 300; float t = 0.; float dt = 1/90.0; int i = 0; float stopthreshold = 0.1; //if the speed (in m/s) is less than this value, discontinue the testing btVector3 stopstart; //where the stopping starts float brakestartspeed = 26.82; //speed at which to start braking, in m/s (26.82 m/s is 60 mph) // wheel lockup speeds during braking float front_lockup_speed = 0.0f; float rear_lockup_speed = 0.0f; bool accelerating = true; //switches to false once 60 mph is reached ResetCar(); car.SetABS(abs); while (t < maxtime) { if (accelerating && car.GetTransmission().GetGear() == 1 && car.GetEngine().GetRPM() > 0.8f * car.GetEngine().GetRedline()) { carinput[CarInput::BRAKE] = 0; carinput[CarInput::CLUTCH] = 0; } car.Update(carinput); world.update(dt); float car_speed = car.GetSpeed(); if (car_speed >= brakestartspeed && accelerating) //stop accelerating and hit the brakes { stopstart = car.GetWheelPosition(WheelPosition(0)); carinput[CarInput::THROTTLE] = 0; carinput[CarInput::BRAKE] = 1; accelerating = false; //info_output << "hitting the brakes at " << t << ", " << car_speed << std::endl; } if (!accelerating && car_speed < stopthreshold) { break; } if (!accelerating) { if (!(front_lockup_speed > 0) && car.GetWheel(WheelPosition(0)).GetRPM() < 0.001f) { front_lockup_speed = car_speed; } if (!(rear_lockup_speed > 0) && car.GetWheel(WheelPosition(3)).GetRPM() < 0.001f) { rear_lockup_speed = car_speed; } } if (t > 0 && !car.GetEngine().GetCombustion()) { error_output << "Car stalled during launch, t=" << t << std::endl; } if (i % (int)(1/dt) == 0) //every second { //info_output << t // << ", " << car_speed // << ", " << car.GetWheel(WheelPosition(0)).GetAngularVelocity() // << ", " << car.GetBrake(WheelPosition(0)).GetBrakeFactor() // << std::endl; } t += dt; i++; } btVector3 stopend = car.GetWheelPosition(WheelPosition(0)); info_output << "60-0 stopping distance "; if (abs) info_output << "(ABS)"; else info_output << "(no ABS)"; info_output << ": " << ConvertToFeet((stopend-stopstart).length()) << " ft\n" << "Wheel lockup speed " << ConvertToMPH(front_lockup_speed) << ", " << ConvertToMPH(rear_lockup_speed) << std::endl; }
void PerformanceTesting::TestMaxSpeed(std::ostream & info_output, std::ostream & error_output) { info_output << "Testing top speed" << std::endl; float maxtime = 300; float t = 0.; float dt = 1/90.0; int i = 0; std::pair <float, float> maxspeed(0, 0); float maxlift = 0; float maxdrag = 0; float lastsecondspeed = 0; float stopthreshold = 0.001; //if the accel (in m/s^2) is less than this value, discontinue the testing float timeto60start = 0; //don't start the 0-60 clock until the car is moving at a threshold speed to account for the crappy launch that the autoclutch gives float timeto60startthreshold = 1; //threshold speed to start 0-60 clock in m/s float timeto60 = maxtime; float timetoquarter = maxtime; float quarterspeed = 0; ResetCar(); clock_t cpu_timer_start = clock(); while (t < maxtime) { if (car.GetTransmission().GetGear() == 1 && car.GetEngine().GetRPM() > 0.8f * car.GetEngine().GetRedline()) { carinput[CarInput::BRAKE] = 0; carinput[CarInput::CLUTCH] = 0; } car.Update(carinput); world.update(dt); float car_speed = car.GetSpeed(); if (car_speed > maxspeed.second) { maxspeed.first = t; maxspeed.second = car_speed; maxlift = car.GetTotalAero()[2]; maxdrag = car.GetTotalAero()[1]; } if (car_speed < timeto60startthreshold) timeto60start = t; if (car_speed < 26.8224f) timeto60 = t; if (car.GetCenterOfMass().length() > 402.3f && timetoquarter == maxtime) { //quarter mile! timetoquarter = t - timeto60start; quarterspeed = car_speed; } if (i % (int)(1/dt) == 0) //every second { if (car_speed - lastsecondspeed < stopthreshold && car_speed > 26) { //info_output << "Maximum speed attained at " << maxspeed.first << " s" << std::endl; break; } if (t > 0 && !car.GetEngine().GetCombustion()) { error_output << "Car stalled during launch, t=" << t << std::endl; } lastsecondspeed = car_speed; //std::cout << t << ", " << car_speed << ", " << car.GetGear() << ", " << car.GetEngineRPM() << std::endl; } t += dt; i++; } clock_t cpu_timer_stop = clock(); clock_t clock_ticks = cpu_timer_stop - cpu_timer_start; float sim_perf = (clock_ticks > 0) ? t / clock_ticks * CLOCKS_PER_SEC : 0; info_output << "Top speed: " << ConvertToMPH(maxspeed.second) << " MPH at " << maxspeed.first << " s\n"; info_output << "Downforce at top speed: " << -maxlift << " N\n"; info_output << "Drag at top speed: " << -maxdrag << " N\n"; info_output << "0-60 MPH time: " << timeto60 - timeto60start << " s\n"; info_output << "1/4 mile time: " << timetoquarter << " s at " << ConvertToMPH(quarterspeed) << " MPH" << std::endl; info_output << "Simulation performance: " << sim_perf << std::endl; }