Nudgeless lane change

Added toggles for nudgeless lane changes, lane detection, and one lane change per signal activation with a lane change delay factor.

selfdrive/controls/lib/desire_helper.py

@@ -45,6 +45,10 @@ class DesireHelper:
     self.params = Params()
     self.params_memory = Params("/dev/shm/params")
 
+    self.lane_change_completed = False
+
+    self.lane_change_wait_timer = 0
+
     self.update_frogpilot_params()
 
   def update(self, carstate, lateral_active, lane_change_prob, frogpilotPlan):
@@ -52,6 +56,13 @@ class DesireHelper:
     one_blinker = carstate.leftBlinker != carstate.rightBlinker
     below_lane_change_speed = v_ego < LANE_CHANGE_SPEED_MIN
 
+    if not (self.lane_detection and one_blinker) or below_lane_change_speed:
+      lane_available = True
+    else:
+      desired_lane = frogpilotPlan.laneWidthLeft if carstate.leftBlinker else frogpilotPlan.laneWidthRight
+      # Check if the lane width exceeds the threshold
+      lane_available = desired_lane >= self.lane_detection_width
+
     if not lateral_active or self.lane_change_timer > LANE_CHANGE_TIME_MAX:
       self.lane_change_state = LaneChangeState.off
       self.lane_change_direction = LaneChangeDirection.none
@@ -60,6 +71,7 @@ class DesireHelper:
       if self.lane_change_state == LaneChangeState.off and one_blinker and not self.prev_one_blinker and not below_lane_change_speed:
         self.lane_change_state = LaneChangeState.preLaneChange
         self.lane_change_ll_prob = 1.0
+        self.lane_change_wait_timer = 0
 
       # LaneChangeState.preLaneChange
       elif self.lane_change_state == LaneChangeState.preLaneChange:
@@ -74,10 +86,18 @@ class DesireHelper:
         blindspot_detected = ((carstate.leftBlindspot and self.lane_change_direction == LaneChangeDirection.left) or
                               (carstate.rightBlindspot and self.lane_change_direction == LaneChangeDirection.right))
 
+        # Conduct a nudgeless lane change if all the conditions are met
+        self.lane_change_wait_timer += DT_MDL
+        if self.nudgeless and lane_available and not self.lane_change_completed and self.lane_change_wait_timer >= self.lane_change_delay:
+          self.lane_change_wait_timer = 0
+          torque_applied = True
+
         if not one_blinker or below_lane_change_speed:
           self.lane_change_state = LaneChangeState.off
           self.lane_change_direction = LaneChangeDirection.none
         elif torque_applied and not blindspot_detected:
+          # Set the "lane_change_completed" flag to prevent any more lane changes if the toggle is on
+          self.lane_change_completed = self.one_lane_change
           self.lane_change_state = LaneChangeState.laneChangeStarting
 
       # LaneChangeState.laneChangeStarting
@@ -108,6 +128,9 @@ class DesireHelper:
 
     self.prev_one_blinker = one_blinker
 
+    # Reset the flags
+    self.lane_change_completed &= one_blinker
+
     self.desire = DESIRES[self.lane_change_direction][self.lane_change_state]
 
     # Send keep pulse once per second during LaneChangeStart.preLaneChange
@@ -125,3 +148,9 @@ class DesireHelper:
 
   def update_frogpilot_params(self):
     is_metric = self.params.get_bool("IsMetric")
+
+    self.nudgeless = self.params.get_bool("NudgelessLaneChange")
+    self.lane_change_delay = self.params.get_int("LaneChangeTime") if self.nudgeless else 0
+    self.lane_detection = self.nudgeless and self.params.get_bool("LaneDetection")
+    self.lane_detection_width = self.params.get_int("LaneDetectionWidth") * (1 if is_metric else CV.FOOT_TO_METER) / 10 if self.lane_detection else 0
+    self.one_lane_change = self.nudgeless and self.params.get_bool("OneLaneChange")

selfdrive/controls/lib/events.py

@@ -376,6 +376,15 @@ def holiday_alert(CP: car.CarParams, CS: car.CarState, sm: messaging.SubMaster,
     AlertStatus.normal, AlertSize.small,
     Priority.LOWEST, VisualAlert.none, AudibleAlert.none, 5.)
 
+def no_lane_available_alert(CP: car.CarParams, CS: car.CarState, sm: messaging.SubMaster, metric: bool, soft_disable_time: int) -> Alert:
+  lane_width = sm['frogpilotPlan'].laneWidthLeft if CS.leftBlinker else sm['frogpilotPlan'].laneWidthRight
+  lane_width_msg = f"{lane_width:.1f} meters" if metric else f"{lane_width * CV.METER_TO_FOOT:.1f} feet"
+  return Alert(
+    "No lane available",
+    f"Detected lane width is only {lane_width_msg}",
+    AlertStatus.normal, AlertSize.mid,
+    Priority.LOWEST, VisualAlert.none, AudibleAlert.none, .2)
+
 EVENTS: Dict[int, Dict[str, Union[Alert, AlertCallbackType]]] = {
   # ********** events with no alerts **********
 
@@ -1036,6 +1045,10 @@ EVENTS: Dict[int, Dict[str, Union[Alert, AlertCallbackType]]] = {
       Priority.MID, VisualAlert.none, AudibleAlert.prompt, 3.),
   },
 
+  EventName.noLaneAvailable : {
+    ET.PERMANENT: no_lane_available_alert,
+  },
+
   EventName.torqueNNLoad: {
     ET.PERMANENT: torque_nn_load_alert,
   },