Design Patterns

Reference Material

• Code examples of design patterns in C# and .NET
• Design pattern types (behavioral, creational, and structural) - wikipedia
• Game Programming Patterns - a work in progress with examples tailored to game development in C++

Handling Input: command pattern + events

• Command design pattern example
• Event driven programming and the Command design pattern - wikipedia
• Events in C#
• C# events tutorial
• On the difference between events and commands - 1 - 2

Management of objects: factory methods, singletons, and static classes

• Factory method pattern - wikipedia
• Singleton pattern - wikipedia
• C# singleton example with "lazy initialization" - use this version if you need to load content in the singleton's constructor
• Static classes

Object behavior: state and strategy patterns

• Example of state machine in XNA
• State design pattern - wikipedia
• Finite state machine tutorial in C++

FYI, another way to handle state transition logic Table-driven Approach and Table-based State Machine and Literate Programming for the Adventure Game
• Strategy design pattern example
• Strategy design pattern - wikipedia

More on object behavior: decorator pattern

• Decorator design pattern example
• Decorator design pattern - wikipedia

More on objects: null object pattern

• Null object design pattern - wikipedia