Scene View Debugging

• Debug.DrawLine(): Visualize connections & paths

• Debug.DrawRay(): Show raycasts & sight lines

• OnDrawGizmos(): Always visible scene markers

• OnDrawGizmosSelected(): Selected object markers

Performance Profiling

• ProfilerMarker: Modern, low-overhead profiling

• Profiler.BeginSample: Legacy but flexible

• Editor Profiler Window: Deep performance analysis

Physics Debugging

• Physics.IgnoreCollision(): Ignore collisions between specific objects

• Physics.OverlapSphere(): Check for objects in a given radius

Network & Input Debugging

• Application.internetReachability: Check network connectivity

• SystemInfo.deviceName: Log the current device’s name

• Input.GetKeyDown(): Track keypresses during gameplay

• Input.mousePosition: Log mouse position for UI debugging

Pro Tips:

• Never leave Debug.Logs in production builds

• Use conditional compilation for debug code

• Keep Gizmos clean and organized

• Profile specific sections, not entire methods

Common Mistakes:

• Debug spam in Update() methods

• Forgetting to remove debug code

• Using wrong log levels

• Not cleaning up profiler markers

• Over-relying on console logs