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!

Pathfinding and obstacle detection with navMesh

NavMesh is Unity's pathfinding system. It works by defining the navigable areas of the game level, storing this as a simple mesh. Once areas that can be accessed are defined, the navMesh is baked like a lightmap.

This system offers numerous advantages over waypoint systems. Firstly, it allows an AI character to roam freely within a level.

  1. Open the scene Chapter9_nav_Start.

    The scene contains the office environment with a navMesh already baked. The steps taken to set this up are well documented on the Unity website.

    We can view the generated navMesh by activating the Navigation panel.

  2. From the menu bar, choose Window | Navigation.

The Navmesh Display box will appear in the lower right of the Scene view.

By default, the Show NavMesh checkbox should be checked and the walkable areas of the game level will be displayed in blue:

In the scene, the patrol points have been placed to make a more complex route for the zombie. If you press the Play button at...