Unity Artificial Intelligence Programming

coverpage

Title Page

Dedication

About Packt

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Contributors

About the authors

About the reviewer

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Preface

Who this book is for

What this book covers

To get the most out of this book

Download the example code files

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Conventions used

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Reviews

Introduction to AI

Artificial Intelligence (AI)

AI in games

AI techniques

Finite State Machines (FSMs)

Random and probability in AI

The sensor system

Polling

The messaging system

Flocking swarming and herding

Path following and steering

A* pathfinding

A navigation mesh

The behavior trees

Locomotion

Summary

Finite State Machines

The player's tank

Initialization

Shooting bullet

Controlling the tank

The Bullet class

Setting up waypoints

The abstract FSM class

The enemy tank AI

The Patrol state

The Chase state

The Attack state

The Dead state

Taking damage

Using an FSM framework

The AdvanceFSM class

The FSMState class

The state classes

The PatrolState class

The NPCTankController class

Summary

Randomness and Probability

Randomness in games

Randomness in computer science

The Unity Random class

Simple random dice game

Definitions of probability

Independent and related events

Conditional probability

Loaded dice

Character personalities

FSM with probability

Dynamic AI

Demo slot machine

Random slot machine

Weighted probability

Near miss

Summary

Further reading

Implementing Sensors

Basic sensory systems

Scene setup

The player's tank and the aspect class

The player's tank

Aspect

AI characters

Sense

Sight

Touch

Testing

Summary

Flocking

Basic flocking behavior

Individual behavior

Controller

Alternative implementation

FlockController

Summary

Path-Following and Steering Behaviors

Following a path

Path script

Path-following agents

Avoiding obstacles

Adding a custom layer

Obstacle avoidance