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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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Toc

Table of Contents (11) Chapters Close

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

Building a decision tree


Building a decision tree starts with instantiating an instance of a decision tree, creating each branch within our tree, connecting the conditional branches, and adding actions:

SoldierLogic.lua:

function SoldierLogic_DecisionTree(userData)
    local tree = DecisionTree.new();
    return tree;
end

Creating branches

The tree we'll be creating combines each of the actions and evaluators we implemented previously and gives our agents the ability to pursue, flee, move, shoot, idle, reload, and die.

Critical health decision branch

First we'll create each branch instance that our decision tree will contain before adding any evaluators or actions.

SoldierLogic.lua:

function SoldierLogic_DecisionTree(userData)
    local tree = DecisionTree.new();

    local isAliveBranch = DecisionBranch.new();
    local criticalBranch = DecisionBranch.new();
    local moveFleeBranch = DecisionBranch.new();
    local enemyBranch = DecisionBranch.new();
    local ammoBranch = DecisionBranch.new...
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