Golang

← Login Counter | Series Overview | Ticket Seller → The Problem: Money Vanishing Into Thin Air Two people share a bank account with $100. Both check the balance at the same time, see $100, and both withdraw $100. The bank just lost $100. This isn’t a hypothetical-race conditions in financial systems have caused real monetary losses. The bank account drama illustrates the fundamental challenge of concurrent programming: read-modify-write operations are not atomic. What seems like a simple operation actually involves multiple steps, and when multiple goroutines execute these steps concurrently, chaos ensues. ...

📚 Go Design Patterns 🎯Behavioral Pattern ← Command Pattern 📋 All Patterns Observer Pattern → What is Chain of Responsibility? The Chain of Responsibility pattern is a behavioral design pattern that allows you to pass requests along a chain of handlers. Each handler decides whether to process the request or pass it to the next handler in the chain. This pattern decouples the sender of a request from its receivers by giving multiple objects a chance to handle the request. ...

Ebiten Game Development Series: Part 1: First Steps | Part 2: Core Concepts → What is Ebiten? Ebiten is a dead-simple 2D game engine for Go. Unlike heavyweight engines with complex editors and asset pipelines, Ebiten gives you a minimalist foundation: a game loop, a way to draw pixels, and input handling. Everything else? You build it yourself. This simplicity is Ebiten’s superpower. You’re not fighting an editor or memorizing a sprawling API. You write Go code that runs 60 times per second and draws rectangles. From those humble beginnings, you can build anything from Pong to procedurally generated roguelikes. ...

Go Concurrency Patterns Series: Series Overview | Goroutine Basics | Channel Fundamentals Introduction: Welcome to Go Coffee Shop Imagine running a busy coffee shop. You have customers placing orders, baristas making drinks, shared equipment like espresso machines and milk steamers, and the constant challenge of managing it all efficiently. This is exactly what concurrent programming in Go is like - and goroutines are your baristas! In this comprehensive guide, we’ll explore Go’s concurrency patterns through the lens of running a coffee shop. By the end, you’ll understand not just how to write concurrent Go code, but why these patterns work and when to use them. ...

📚 Go Design Patterns 🎯Behavioral Pattern ← Observer Pattern 📋 All Patterns State Pattern → What is Iterator Pattern? The Iterator pattern provides a way to access elements of a collection sequentially without exposing the underlying representation. It’s like having a remote control for your TV - you don’t need to know how the channels are stored internally, you just press “next” to move through them. ...

The UI Navigation Problem Game UI often involves stacked screens: you open a pause menu, then settings, then graphics options, then a confirmation dialog. Each screen needs to: Pause the screen beneath it Handle input independently Resume the previous screen when closed Maintain state across transitions Simple state machines fall short here. You need something that can track a stack of states. Enter the pushdown automaton. What is a Pushdown Automaton? A pushdown automaton is a state machine with a stack. Instead of just transitioning between states, you can: ...

The Save/Load Problem Every game needs to save player progress. But how do you capture the entire game state without exposing internal implementation details? How do you support undo/redo, time travel debugging, or replay systems? The Memento pattern solves this by capturing and externalizing an object’s internal state without violating encapsulation. Combined with Go’s encoding/gob package, you get powerful, type-safe serialization for game saves, undo systems, and more. The Naive Approach Here’s what not to do: ...

Beyond Scripted AI Most game NPCs follow scripted behaviors or state machines: “If enemy seen, attack. If health low, flee.” While predictable and easy to implement, these approaches lack the intelligence to adapt to changing circumstances. What if your NPC could plan their own actions based on goals? Goal-Oriented Action Planning (GOAP) empowers NPCs to dynamically create plans to achieve their goals. Used in games like F.E.A.R. and The Sims, GOAP creates emergent, intelligent behaviors that feel surprisingly alive. ...

The Power of Streaming Pipelines Imagine processing a million log entries. The naive approach loads everything into memory, processes it, then outputs results. But what if you don’t have enough RAM? What if you want results streaming in real-time? Pipeline patterns break complex processing into stages connected by channels. Data flows through the pipeline, with each stage transforming it concurrently. It’s Unix pipes meets goroutines-and it’s beautiful. The Sequential Approach Here’s what we’re moving away from: ...

What is State Pattern? The State pattern is a behavioral design pattern that allows an object to alter its behavior when its internal state changes. It appears as if the object changed its class. Think of it like a vending machine - it behaves differently when it’s waiting for coins, has coins inserted, is dispensing a product, or is out of stock. Each state has its own set of valid operations and transitions. ...