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Learning game AI programming with Lua

You're reading from   Learning game AI programming with Lua Leverage the power of Lua programming to create game AI that focuses on motion, animation, and tactics

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Product type Paperback
Published in Nov 2014
Publisher Packt
ISBN-13 9781783281336
Length 352 pages
Edition 1st Edition
Languages
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Author (1):
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David Young David Young
Author Profile Icon David Young
David Young
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Table of Contents (16) Chapters Close

Learning Game AI Programming with Lua
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Getting Started with AI Sandbox FREE CHAPTER 2. Creating and Moving Agents 3. Character Animations 4. Mind Body Control 5. Navigation 6. Decision Making 7. Knowledge Representation 8. Perception 9. Tactics Index

Creating a group of followers


In this example, we're going to build another AI type called a follower agent. This time, a group of followers will stay together and move toward their leader. The leader, on the other hand, is still the same seeking agent that will randomly move around the sandbox, completely oblivious to the group of followers behind it.

Group-based movement using separation, cohesion, and alignment

To create followers, we'll use multiple steering forces to combine, separate, and align our agents to the leader agent they are following.

Create the Lua file as follows:

src/my_sandbox/script/FollowerAgent.lua

FollowerAgent.lua:

require "AgentUtilities";

local leader;

function Agent_Initialize(agent)
    AgentUtilities_CreateAgentRepresentation(
        agent, agent:GetHeight(), agent:GetRadius());

    -- Randomly assign a position to the agent.
    agent:SetPosition(Vector.new(
        math.random(-50, 50), 0, math.random(-50, 50)));

    -- Assign the first valid agent as the...
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