Multiscene Editing

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Unity Cheat Sheet: #32

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Scene Management in Unity isn't just loading and unloading levels. It's Unity's way of organizing your game into manageable chunks. Here's what you need to know:


Basic Scene Operations

  • LoadScene: Simple but blocks gameplay
  • LoadSceneAsync: Non-blocking, shows progress
  • UnloadSceneAsync: Clean up unused scenes
  • MergeScenes: Combine two scenes
  • MoveGameObjectToScene: Relocate objects

Scene Loading Modes

  • Single: Replace current scene
  • Additive: Load alongside current scene
  • Async: Load in background with progress

Scene Management

  • GetActiveScene: Current main scene
  • SetActiveScene: Change main scene
  • sceneCount: Total loaded scenes
  • GetSceneByName: Find specific scene
  • isLoaded/isDirty: Scene status checks

Scene Events

  • sceneLoaded: When scene completes loading
  • sceneUnloaded: When scene is removed
  • activeSceneChanged: When main scene switches

Editor Operations

  • OpenScene: Load in editor
  • SaveScene: Save changes
  • NewScene: Create empty scene
  • MarkSceneDirty: Flag for saving

Common Patterns:

  • Load heavy scenes async while showing progress
  • Use additive loading for streaming open worlds
  • Keep persistent objects in base scene
  • Merge scenes to optimize hierarchy

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