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Lua for Game Development — Chapter 7: UI Systems, HUD, Widgets, Event Binding, and Lua-Driven UI Architecture

User interfaces are a core part of game development:

  • HUD (health bars, minimaps, ammo counters)
  • Menus (pause, settings, inventory)
  • In-game shops
  • UI alerts and notifications
  • Pop-up windows and dialogs
  • Touch UI for mobile

Lua excels here because UI scripting requires:

  • Flexibility
  • Fast iteration
  • Easy updates
  • Data binding
  • Coroutine-friendly animations
  • Modular components

This chapter teaches you how to build a complete UI architecture in Lua.

1. The Goals of a Good UI Architecture

A production UI system must be:

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