Use the Configurable JointA physics component allowing a dynamic connection between Rigidbody components, usually allowing some degree of movement such as a hinge. More info
See in Glossary to create custom targets and driving forces for a simulated motor.
To configure driving forces on a Configurable JointAn extremely customizable joint that other joint types are derived from. It can be used to create anything from adapted versions of existing joints to custom designed and highly specialized joints. More info
See in Glossary:
1. Choose whether you want to apply a target position or apply a target velocity for the driving force to reach. Targets can be linear (directional) or angular (rotational).
1. Configure driving forces for the respective axes, using properties that simulate a spring and damper system.
Note: You can apply both a linear force and a rotational force to a joint. However, you should not apply more than one linear force or more than one rotational force. If you apply more than one, the physics system attempts to solve both at once and produces unwanted results. For example, if you apply a rotational force Target Rotation and a linear force Target VelocityA joint property to set the desired velocity with which the joint should move to the Target Position under the drive force. More info
See in Glossary, you would create a joint that stays at a specific rotation and moves at a specific linear velocity. However, if you apply two rotational forces, a Target Rotation and a Target Angular Velocity, the physics system attempts to keep the object at a specific rotation while also rotating it at a specific velocity.
To apply a spring-like behavior that always tries to return the object to a specified position or rotation, set a target positionA joint property to set the target position that the joint’s drive force should move it to. More info
See in Glossary. You can set a linear position, a rotational position, or both.
You must also set the respective linear or angular axis drives, as described on Driving forces with Configurable Joints.
Important: For a Configurable Joint to apply the driving force necessary to reach the target position, the Position Spring value on any affected axis drive must be something other than 0.
To apply a specific continuous velocity, set a target velocity. You can set a linear motion velocity, a rotational motion velocity, or both.
To set a target linear velocity, use the Target Velocity’s X, Y and Z values. These values configure each axis individually, in meters per second.
To set a target angular velocity, there are two options:
You must also set the respective linear or angular axis drives, as described on Driving forces with Configurable Joints.
Important: For a Configurable Joint to apply the driving force necessary to reach the target velocity, the Position Damper value on any affected axis drive must be something other than 0.
For each axis drive you want to apply force on, use Position Spring to configure the spring force to apply, and Position Damper to configure the damping effect on that spring force.
Apply trial and error on the spring and damper values to achieve the results you need, and test at run time to check that the forces you apply are enough to counter any other forces applied to the object.
Note: You can apply both a linear force and a rotational force to a joint. However, you should not apply more than one directional force or more than one rotational force. If you apply more than one, the physics system attempts to solve both at once and produces unwanted results. For example, if you apply a rotational force Target Rotation and a linear force Target Velocity, you would create a joint that stays at a specific rotation and moves at a specific linear velocity. However, if you apply two rotational forces, a Target Rotation and a Target Angular Velocity, the physics system attempts to keep the object at a specific rotation while also rotating it at a specific velocity.