int
getGear(CarState & cs) {
int current_gear = cs.getGear();
if(!current_gear) return 1;
if(cs.getRpm() > 8000) ++current_gear;
else if(current_gear > 1 && cs.getRpm() < 5000) --current_gear;
return current_gear;
}
int
InsideTrackA::get_gear(CarState &cs) {
int gear = cs.getGear();
if(gear <= 0) return start_gear;
int rpm = cs.getRpm();
if(shouldIncreaseGear(gear, rpm)) ++gear;
else if(shouldDecreaseGear(gear, rpm)) --gear;
return gear;
}
int
SimpleDriver::getGear(CarState &cs)
{
int gear = cs.getGear();
int rpm = cs.getRpm();
// if gear is 0 (N) or -1 (R) just return 1
if (gear<1)
return 1;
// check if the RPM value of car is greater than the one suggested
// to shift up the gear from the current one
if (gear <6 && rpm >= gearUp[gear-1])
return gear + 1;
else
// check if the RPM value of car is lower than the one suggested
// to shift down the gear from the current one
if (gear > 1 && rpm <= gearDown[gear-1])
return gear - 1;
else // otherwhise keep current gear
return gear;
}
void
SimpleDriver::clutching(CarState &cs, float &clutch)
{
double maxClutch = clutchMax;
// Check if the current situation is the race start
if (cs.getCurLapTime()<clutchDeltaTime && stage==RACE && cs.getDistRaced()<clutchDeltaRaced)
clutch = maxClutch;
// Adjust the current value of the clutch
if(clutch > 0)
{
double delta = clutchDelta;
if (cs.getGear() < 2)
{
// Apply a stronger clutch output when the gear is one and the race is just started
delta /= 2;
maxClutch *= clutchMaxModifier;
if (cs.getCurLapTime() < clutchMaxTime)
clutch = maxClutch;
}
// check clutch is not bigger than maximum values
clutch = min(maxClutch,double(clutch));
// if clutch is not at max value decrease it quite quickly
if (clutch!=maxClutch)
{
clutch -= delta;
clutch = max(0.0,double(clutch));
}
// if clutch is at max value decrease it very slowly
else
clutch -= clutchDec;
}
}
CarControl MyDriver::wDrive(CarState cs){
// Update clock variables for graphing over time
_timePrevious = _timeCurrent;
_timeCurrent = Clock::now();
_dt = _timeCurrent - _timePrevious;
_runtime += _dt;
if (_logging)
Renderer::get().setWindowTitle(std::to_string(_dt.count()));
// Temporarily copy old sensors to delta and reset sensors with max distance
memcpy(&_driving.delta[0], &_driving.sensors[0], sizeof(_driving.sensors));
std::fill_n(_driving.sensors, ALL_SENSORS, 200.f);
// Directly mapping track sensors to front 19 sensors
int zero = 0;
for (int i = 0; i < HALF_SENSORS; i++){
float distance = cs.getTrack(i);
if (distance <= 0.f)
zero++;
if (distance < _driving.sensors[i + QUART_SENSORS])
_driving.sensors[i + QUART_SENSORS] = distance;
}
if (zero == 19)
_driving.crashed = true;
else if (_driving.crashed)
_driving.crashed = false;
// Iterate through opponent sensors
for (int i = 0; i < ALL_SENSORS; i++){
//std::cout << "i - " << i << "\n";
float distance = cs.getOpponents(i);
// If no opponent, skip sensor
if (distance >= _awarnessOpponent * 200.f)
continue;
// Calculate amount of track sensors to block, and round to nearest even integer
float raw = distance / (_awarnessOpponent * 200.f);
float block = ((1.f - raw) * (float)((_maxBlock - 2) + 2));
block = glm::roundEven(block);
// Apply smaller distances to sensor array
for (int x = block / 2; x >= -(block / 2 - 1); x--){
int sensor = (i + x) % ALL_SENSORS;
float dropOff = glm::abs(changeRange(block / 2, -(block / 2 - 1), -1.f, 1.f, x));
if (_driving.sensors[sensor] > distance + dropOff * _blockDropOff)
_driving.sensors[sensor] = distance + dropOff * _blockDropOff;
}
}
// Calculate difference using old sensors stored in delta
for (int i = 0; i < ALL_SENSORS; i++){
_driving.delta[i] = _driving.delta[i] - _driving.sensors[i];
if (_driving.delta[i] < 0.f)
_driving.delta[i] = glm::abs(_driving.delta[i]);
else
_driving.delta[i] = 0.f;
if (_driving.delta[i] > 0.25f)
_driving.delta[i] = 0.f;
}
// Decreasing sensors around furthest ray
// if furthest ray is on left, decrease right sensors
// if furthest ray is on right, decrease left sensors
// if furthest ray is in the middle, decrease both sides sensors
if (_driving.furthestRay <= QUART_SENSORS){
for (int i = _driving.furthestRay; i < HALF_SENSORS; i++){
_driving.sensors[QUART_SENSORS + i] *= changeRange(_driving.furthestRay, 18, 1, 0, i);
}
}
if (_driving.furthestRay >= QUART_SENSORS){
for (int i = _driving.furthestRay; i >= 0; i--){
_driving.sensors[QUART_SENSORS + i] *= changeRange(_driving.furthestRay, 0, 1, 0, i);
}
}
// Choosing which ray to steer towards, and how fast
float maxDistance = _driving.sensors[_driving.furthestRay + QUART_SENSORS];
for (int i = 0; i < HALF_SENSORS; i++){
float distance = _driving.sensors[i + QUART_SENSORS];
if (maxDistance < distance){
maxDistance = distance;
_driving.furthestRay = i;
}
}
// P - PID
float proportional = (changeRange(0.f, 18.f, 1.5f, -1.5f, _driving.furthestRay) - (cs.getTrackPos() / 500.f)) - cs.getTrackPos() * _middleDrift;
proportional *= _p;
// I - PID
while (_driving.steerHistory.size() > _historySteerLength)
_driving.steerHistory.erase(_driving.steerHistory.begin());
float integral = 0.f;
for (float i : _driving.steerHistory)
integral += i;
integral *= _i;
// D - PID
float derivative = 0.f;
if (_driving.steerHistory.size() >= 2)
derivative = _driving.steerHistory[_driving.steerHistory.size() - 1] - _driving.steerHistory[_driving.steerHistory.size() - 2];
derivative *= _d;
// P + I + D
float oldSteer = _driving.steer;
_driving.steer = proportional + integral + derivative;
_driving.steerHistory.push_back(_driving.steer);
_driving.steer = glm::mix(oldSteer, _driving.steer, _easeSteer);
// Speed control
if (!_driving.crashed){
float speed = _driving.sensors[_driving.furthestRay + QUART_SENSORS] / (200.f * _awarnessTrack) + _driving.delta[_driving.furthestRay + QUART_SENSORS] * 8.f;
speed *= (1.f - _speedRestrict);
_driving.speed = glm::mix(_driving.speed, speed, _easeAccel); //*(1.f - cs.getTrack(QUART_SENSORS)) * brake;
float brake = (cs.getSpeedX() / 200.f) - _driving.speed;
if (brake > 0.f)
_driving.brake = glm::mix(_driving.brake, brake, _easeBrake);
else
_driving.brake = 0.f;
}
// Changing gears
int gear = cs.getGear();
int rpm = cs.getRpm();
if (gear < 1)
_driving.gear = 1;
if (gear < 6 && rpm >= _gearUp[gear - 1])
_driving.gear = gear + 1;
else
if (gear > 1 && rpm <= _gearDown[gear - 1])
_driving.gear = gear - 1;
// If logging, render sensors
if (_logging){
Renderer::get().drawGraph({ _runtime.count() / 100.f, _driving.steer }, 0);
Renderer::get().drawGraph({ _runtime.count() / 100.f, _driving.speed }, 1);
Renderer::get().drawGraph({ _runtime.count() / 100.f, _driving.brake }, 2);
for (int i = 0; i < ALL_SENSORS; i++){
float distance = _driving.sensors[i];
if (distance < 0.1f)
continue;
float radians = glm::radians(i * 10.f);
glm::vec2 point = { -glm::sin(radians), -glm::cos(radians) };
glm::vec3 colour = { 1.f, 1.f, 1.f };
if (_driving.furthestRay + QUART_SENSORS == i)
colour = { 0.f, 1.f, 0.f };
float zoom = 10.f;
Renderer::get().drawLine({ 0, 0 }, point * distance * zoom, colour);
}
if (_driving.crashed)
std::cout << "Crashed!\n";
// Un-comment for pointless cool effects
Renderer::get().setRotation(cs.getAngle() * 90.f);
Renderer::get().setZoom(1.f + cs.getSpeedX() / 200.f);
}
// Applying to controller
CarControl cc;
cc.setGear(_driving.gear);
cc.setAccel(_driving.speed);
cc.setSteer(_driving.steer);
cc.setBrake(_driving.brake);
return cc;
}
