game-developer

name game-developer description Use when building game systems, implementing Unity/Unreal Engine features, or optimizing game performance. Invoke to implement ECS architecture, configure physics systems and colliders, set up multiplayer networking with lag compensation, optimize frame rates to 60+ FPS targets, develop shaders, or apply game design patterns such as object pooling and state machines. Trigger keywords: Unity, Unreal Engine, game development, ECS architecture, game physics, multiplayer networking, game optimization, shader programming, game AI. license MIT metadata {"author":"https://github.com/Jeffallan","version":"1.1.0","domain":"specialized","triggers":"Unity, Unreal Engine, game development, ECS architecture, game physics, multiplayer networking, game optimization, shader programming, game AI","role":"specialist","scope":"implementation","output-format":"code","related-skills":null} Game Developer Core Workflow Analyze requirements — Identify genre, platforms, performance targets, multiplayer needs Design architecture — Plan ECS/component systems, optimize for target platforms Implement — Build core mechanics, graphics, physics, AI, networking Optimize — Profile and optimize for 60+ FPS, minimize memory/battery usage ✅ Validation checkpoint: Run Unity Profiler or Unreal Insights; verify frame time ≤16 ms (60 FPS) before proceeding. Identify and resolve CPU/GPU bottlenecks iteratively. Test — Cross-platform testing, performance validation, multiplayer stress tests ✅ Validation checkpoint: Confirm stable frame rate under stress load; run multiplayer latency/desync tests before shipping. Reference Guide Load detailed guidance based on context: Topic Reference Load When Unity Development references/unity-patterns.md Unity C#, MonoBehaviour, Scriptable Objects Unreal Development references/unreal-cpp.md Unreal C++, Blueprints, Actor components ECS & Patterns references/ecs-patterns.md Entity Component System, game patterns Performance references/performance-optimization.md FPS optimization, profiling, memory Networking references/multiplayer-networking.md Multiplayer, client-server, lag compensation Constraints MUST DO Target 60+ FPS on all platforms Use object pooling for frequent instantiation Implement LOD systems for optimization Profile performance regularly (CPU, GPU, memory) Use async loading for resources Implement proper state machines for game logic Cache component references (avoid GetComponent in Update) Use delta time for frame-independent movement MUST NOT DO Instantiate/Destroy in tight loops or Update() Skip profiling and performance testing Use string comparisons for tags (use CompareTag) Allocate memory in Update/FixedUpdate loops Ignore platform-specific constraints (mobile, console) Use Find methods in Update loops Hardcode game values (use ScriptableObjects/data files) Output Templates When implementing game features, provide: Core system implementation (ECS component, MonoBehaviour, or Actor) Associated data structures (ScriptableObjects, structs, configs) Performance considerations and optimizations Brief explanation of architecture decisions Key Code Patterns Object Pooling (Unity C#) public class ObjectPool < T > where T : Component { private readonly Queue<T> _pool = new (); private readonly T _prefab; private readonly Transform _parent; public ObjectPool ( T prefab, int initialSize, Transform parent = null ) { _prefab = prefab; _parent = parent; for ( int i = 0 ; i < initialSize; i++) Release(Create()); } public T Get () { T obj = _pool.Count > 0 ? _pool.Dequeue() : Create(); obj.gameObject.SetActive( true ); return obj; } public void Release ( T obj ) { obj.gameObject.SetActive( false ); _pool.Enqueue(obj); } private T Create () => Object.Instantiate(_prefab, _parent); } Component Caching (Unity C#) public class PlayerController : MonoBehaviour { // Cache all component references in Awake — never call GetComponent in Update private Rigidbody _rb; private Animator _animator; private PlayerInput _input; private void Awake () { _rb = GetComponent<Rigidbody>(); _animator = GetComponent<Animator>(); _input = GetComponent<PlayerInput>(); } private void FixedUpdate () { // Use cached references; use deltaTime for frame-independence Vector3 move = _input.MoveDirection * (speed * Time.fixedDeltaTime); _rb.MovePosition(_rb.position + move); } } State Machine (Unity C#) public abstract class State { public abstract void Enter () ; public abstract void Tick ( float deltaTime ) ; public abstract void Exit () ; } public class StateMachine { private State _current; public void TransitionTo ( State next ) { _current?.Exit(); _current = next; _current.Enter(); } public void Tick ( float deltaTime ) => _current?.Tick(deltaTime); } // Usage example public class IdleState : State { private readonly Animator _animator; public IdleState ( Animator animator ) => _animator = animator; public override void Enter () => _animator.SetTrigger( "Idle" ); public override void Tick ( float deltaTime ) { /* poll transitions */ } public override void Exit () { } } Documentation