Using rigid body joints

In this recipe, we will create two objects with physics simulation: a rope and doors. We will use rigid body joints to constrain the movement and rotation of those objects.

Getting ready

For this recipe, we need four models: a RopePole (similar to the one from the previous recipe), a skinned Rope with a RopeRig containing around 10 bones,  a Frame and two doors, DoorLeft and DoorRight (resembling those swing doors from a saloon). We also need a character with a rigid body to collide with our objects. You can go to the Chapter 09 Physics and animations\Recipe 02 Using rigid body joints directory. You will find all these objects in the Example.unity scene. When you play the game, try to walk with our character and collide with the rope and doors to see the effect.

Rope and swing doors

How to do it...

To use rigid body joints, follow these steps:

1. Import our swing doors to Unity. The model should contain three objects: Frame, DoorLeft, and DoorRight.
2. Place the objects in the...