How to enter and exit from a vehicle

On this page, you will learn how to setup the enter-exit vehicle system.

Any vehicle can be controlled by the player, basically the entry system will disable the character controls and enable the vehicle control.

To drive a Vehice the character must have the DriveVehicleSystem, this component add the ability to find near vehicles and entry on it.

Property	Description
Start Vehicle	A default vehicle to start driving
Enter Vehicles Enabled	If true, the character can enter and drive vehicles.
Exit Vehicles Enabled	If true, the character can exit from the Vehicle if is driving.
Disable Character On Enter	Disable the character after enter on the vehicle, usefull for vehicles that not have IK settings for drive animations.
Delay To Re enable Action	The time to reactive enter vehicle action after start enter or exit of some Vehicle. Can't be less than 0.1.
Use Default Inputs	Use default player controls to enter and exit vehicles.
Check Near Vehicles	Stores the properties that allow to find closest vehicles.
-> Layer	The layer used to find the vehicles.
-> Avoid Obstacles	Find vehicles only if there are not obstacles between the vehicle and the character, it's uses the Layer property.
-> Enter Vehicles Area Tag	Used to find only specifics colliders as trigger with this tag to be used as a area to enter on the vehicle.
-> Check Range	The max distance to find vehicles.
-> Auto Check	If true, the driver system will research vehicles on each X times.
-> Auto Check Interval	Used to auto find near vehicles several times per second if is AutoCheck true. Can't be less than 0.1 to avoid performance issues.
Max Vehicle Speed To Enter	Don't allow to enter on vehicles in movement.
Max Vehicle Speed To Exit	Don't allow to exit from a vehicle on high speeds.
Max Character Speed To Enter	Don't allow to character enter on a vehicle if the character is in movement.
Ground Layer	The layer used to detect the ground to set the character position when exit from the current vehicle.

How vehicle detection works ?

Vehicles must have a child trigger with a specific tag and layer.

With this settings, the character will find the VehicleArea collider of the example vehicle if the character is nearest to the box. The search happen each 0.5 seconds. You can see the Layer contains Default, Ignore Raycast and Walls. Only the Ignore Raycast layer is necessary to find the vehicle but Default and Walls can be used as obstacles to avoid if AvoidObstacles is true.

It's not recommended use AutoCheck on all characters because it's can reduce the performance depending of the level complexity. Use auto check only on important characters like the player.

If you need to have enter/exit on many characters try:

• Increase the AutoCheckInterval example 1, 2 seconds...

• Disable the AutoCheck by distance.

• Set AutoCheck as false and call DriverVehicles.FindNearVehicles() when necessary.

Characters without driver animations

For simple games you can disable the character instead of use complex animations and IK system.

Simple Character Driver Animation

If you have a character animation that match with the vehicle model you can use the JUVehicleCharacterIK to set the character position inside the vehicle.

Advanced Character Driver Animations with IK

You can use foot and hand IK on vehicles if you want, very useful to make wheel steer, motorcycle inclination animation or foot placements.

To use it, the character must have the DriverProceduralAnimation component, it's is responsible by the IK system.

Furthermore, you need to have assigned all the IK target positions on the JUVehicleCharacterIK of the vehicle and the IK weights configured.

Tip: if you see a prefab of a vehicle you will notice hand, foot, sphere or humanoid character gizmos. You can copy these GameObjects, paste them into your new vehicle, position them and assign them to the above parameters.

Standard IK Settings

Inverse Kinematics Target Positions	Description
Character Location	Character body position in vehicle
Left Hand Position IK	Left hand position and rotation in vehicle
Right Hand Position IK	Right hand position and rotation in vehicle
Left Foot Position IK	Left foot position and rotation in vehicle
Right Foot Position IK	Right foot position and rotation in vehicle

IK Animation Weights Parameters	Description
Frontal Lean Weight	Frontal Lean Motion Weight IK
Side Lean Weight	Side lean Motion Weight IK
Look At Direction Weight	Look At Motion Weight IK
Hint Movement Weight	Hint Motion Weight IK
Foot Placement	Foot placement in driving (Motorcycle or Bike for example)