Tool window layout

Main Tool Controls Section

The top row contains core operations:

Add New Drive Path Spline: Creates a new drive path spline in the scene. The mouse cursor changes to purple, allowing the user to click on the map to place nodes and draw the driving path
Import from PNG Mask: Loads drive paths from exported PNG mask files. Useful for importing previously created paths or sharing paths between sessions
Remove All Drive Path Splines: Clears all drive path splines from the session. This action cannot be undone
Toggle Speed Targets/Speed Limits: Quick-switch between Speed (v) and Limit (vl) when Speed Profile is already enabled on a Free Mode spline. Use the Speed Profile radios in Properties to enable bars for the first time
Tool Rigid Translation/Lock Toggle: Switches between free and rigid translation modes. Free mode allows normal movement, while rigid mode locks the spline for precise editing
Save Session to Disk: Exports the current session to a JSON file, including all splines, vehicles, and their linking relationships
Load Session from Disk: Imports a session from a JSON file, restoring the complete state of splines, vehicles, and links

Lists all drive path splines in the current session. Each row contains:

Spline Name: Editable text field for the spline identifier
Remove Spline Button: Deletes the specific spline
Enable/Disable Toggle: Controls whether the spline is active
Link/Unlink Button: Connects or disconnects the spline to/from the selected vehicle

Buttons underneath operate on the selected spline:

Go to Spline: Moves the camera to focus on the selected spline
Flip Spline: Reverses the spline direction, which also flips the velocity profile
Split Spline: Divides the spline at the selected node, creating two separate splines
Simplify Spline: Reduces node count while preserving spline shape

Link status below the list shows whether the selected spline is linked to a vehicle.

Lists vehicles in the scene. Each row contains:

Vehicle Name: Identifier for the vehicle in the scene
Remove Vehicle Button: Removes the vehicle from the scene
Go to Vehicle Button: Moves the camera focus to the vehicle
Link/Unlink Button: Connects or disconnects the vehicle to/from the selected path spline

Link status below the list shows whether the selected vehicle is linked to a path spline.

Refresh Vehicle List: Recomputes the list of available vehicles in the scene, useful after adding or removing vehicles outside the tool
Toggle Spline Ribbon Visibility: Shows/hides the spline ribbons during playback
Play/Stop Toggle: Starts or stops AI driving for all linked vehicles in the session
Start/Stop Recording Vehicle: Records vehicle movement to create a new spline (only available when the vehicle is not linked)

Velocity display units:

Trajectory type:

Free Mode: Default — draw paths anywhere on the map without restrictions (script trajectory)
NavGraph Mode: Uses existing navigation data to create paths which follow road networks (wpTargetList trajectory)

Speed Profile / Route Speed Mode — radio groups sent to ai.driveUsingPath. See Overview → Speed control for what each mode does.

Driving behavior parameters:

Delay Time Slider: How long the AI waits before starting to drive (in seconds)
Starting Node Slider: Which node on the path the AI begins from
Route Speed Slider: Visible only when Route Speed Mode is not Off; sets the route speed in meters per second
Aggression Slider: Driving style from conservative (0.3) to aggressive (1.0)
Num Laps Slider: Visible when the spline is looped; sets how many laps the AI drives
Drive in Lane Checkbox: NavGraph Mode only; when enabled, AI follows correct side of the road and respects road direction
Avoid Cars Checkbox: When enabled, AI is aware of other vehicles and avoids collisions

A warning appears when a looped NavGraph spline has multiple laps and the last waypoint does not match the starting node.