The Command Pattern: Coding Undo/Redo | Game Engine Concepts #3
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In this episode I explain what the Command Pattern is and how you can use it. Before I explain what the Command Pattern is I explain what a design pattern is and reference the Gang of Four's original book, Design Patterns. After that, I explain that the Command Pattern is simply a wrapper around executing commands. I then illustrate how this can be used in conjunction with a Command History object to create an undo/redo system, record gameplay sessions, and create instant replays. I describe in detail how you might code this, then I show an actual example that I use in my code to implement undo/redo system.
The Command Pattern: https://gameprogrammingpatterns.com/c...
Gang of Four Book: https://www.amazon.com/Design-Pattern...
Command Code Example: https://github.com/ambrosiogabe/Cocoa...
Command History Code Example: https://github.com/ambrosiogabe/Cocoa...
0:00 Intro
0:31 What is a Programming Pattern?
1:39 What is the Command Pattern?
13:39 What does the Code Look Like?
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Website: https://ambrosiogabe.github.io/
Github: https://github.com/ambrosiogabe
Here are some books I recommend if you want to learn about game engine development more thoroughly. I do not profit off any of these sales, these are just some books that have helped me out :)
My Recommended Game Engine Books:
Game Engine Architecture: https://www.gameenginebook.com/
Game Physics Cookbook (Read this before the next physics book): https://www.amazon.com/Game-Physics-C...
Game Physics (Ian Millington): https://www.amazon.com/Game-Physics-E...
Game Programming Patterns (Free): https://gameprogrammingpatterns.com/
My Recommended Beginning Game Programming Books:
JavaScript Game Design: https://www.apress.com/gp/book/978143...
My Recommended Java Books:
Data Structures/Algorithms: https://www.amazon.com/Data-Structure...
LWJGL (Free, but I haven't read this thoroughly): https://lwjglgamedev.gitbooks.io/3d-g...
Outro Music: https://www.bensound.com/royalty-free...
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