Flutter Basics:
Before exploring Flutter Flame, it's essential to have a strong foundation in Flutter itself. Understand how to create Flutter apps, work with widgets, manage state, and use packages from the Flutter ecosystem.
Dart Programming Language with OOP:
Flutter Flame is built using the Dart programming language. Familiarize yourself with Dart's syntax, data types, functions, classes, and object-oriented programming concepts. Since Flutter Flame involves creating game objects, behaviors, and interactions, a good understanding of OOP principles is crucial. Learn about classes, inheritance, polymorphism, and encapsulation.
Game Development Concepts:
Having a grasp of fundamental game development concepts will be beneficial. Understand terms like sprites, animations, game loops, collisions, physics, input handling, and scene management.
Graphics and Design:
A basic understanding of graphics and design concepts will assist you in creating visually appealing game assets and understanding how to manipulate graphics in a game.
Here is the documentation going through it will help you the most
Link: https://docs.flame-engine.org/1.5.0/flame/flame.html
This is sort of a course provided officially by Google
Link: https://codelabs.developers.google.com/codelabs/flutter-flame-game