Book Image

Unity Character Animation with Mecanim

By : Jamie Dean
Book Image

Unity Character Animation with Mecanim

By: Jamie Dean

Overview of this book

Game animation for independent developers has taken a giant leap forward with Unity 5's Mecanim toolset, which streamlines the import/export, retargeting, and many other aspects of the character animation workflow. Unity Character Animation with Mecanim is a great primer for getting to know the nuts and bolts of Mecanim and other character animation related tools in Unity 5. It offers you step-by-step instructions for preparing and exporting rigged models and animation sequences from commonly used 3D packages, such as Maya, 3ds Max and Blender. This book explores the new set of animation tools introduced with Mecanim in Unity 5. Approaching its subject matter through a typical genre–a zombie action game, character animation techniques are explored using real examples of player input and interaction, enemy behavior, and other aspects of game dynamics. As the book progresses, the reader will understand how these elements fit together in a small game development workflow. We will begin with a demonstration of the process of getting a rigged character into Unity 5 and setting it up to use provided animation sequences. We will also consider a few industry standard 3D packages and how these can be used to rig a humanoid character for use in Unity 5. We will demonstrate the retargeting capabilities of Mecanim’s Humanoid Animation type by adjusting motion sequences to fit disparate character types in our game. After this, we will look at Ragdoll physics and the implementation of this commonly used technique in a Mecanim workflow. The book culminates with a thorough dissection of the enemy character AI script incorporating the Mecanim elements detailed in the previous chapters. Unity Character Animation with Mecanim will provide you with a detailed exploration of the interaction between game development and character animation, and will broaden your understanding of the rich animation toolset within Unity 5
Table of Contents (16 chapters)
Unity Character Animation with Mecanim
About the Author
About the Reviewers
Free Chapter
The Zombie Attacks!

Chapter 8. Implementing Ragdoll Physics

In this chapter, we will apply physics to the female zombie character, creating an interesting death effect that can be used in the game.

Ragdoll physics is a method that involves a system of joints connecting weighted body parts used to create a real-time animation sequence.

Unlike, traditional keyframe animation that is created in external 3D software and imported to Unity, the ragdoll object will interact with forces within the game. This means that the enemy will fall to the ground in different ways based on the applied force and the scenery that it collides with.

In this chapter, you will learn to:

  • Demonstrate the use of Unity's Rigidbody and Joint components

  • Demonstrate the creation of a ragdoll from an existing character with the Ragdoll Wizard

  • Show the adjustment of collision objects to fit the character model

  • Add custom joints for parts of the rig not covered by the wizard

  • Set limits to approximate realistic joint rotation.

When the zombie character...