Scene Management

Motivation:

The SceneManager class is the heart of the game’s flow, orchestrating transitions between different game states. It ensures a smooth experience for the player by managing the loading, unloading, and activation of scenes.

Key Concepts:

• Scene: A distinct part of the game, representing a specific gameplay state, such as the game menu, the gameplay itself, or a victory screen.
• Scene Manager: A central class responsible for loading, unloading, and managing scenes.

Code Structure:

The SceneManager class in src/SceneManager.ts is responsible for the following:

• Loading and Unloading Scenes:

  • The loadScene method is called to transition to a new scene, loading the specified scene’s assets and initializing it.
  • The unloadScene method is called to clean up a scene after it’s no longer active, releasing its resources.

• Switching Between Scenes:

  • setScene handles the core transition logic, ensuring that the correct scene is active and the previous one is deactivated.

Scene Lifecycle:

• Initialization: Scenes are initialized when they are loaded using the loadScene method. This typically involves setting up the scene’s visuals, components, and event listeners.
• Activation: When a scene becomes the active scene, it’s notified through the onEnter method, allowing it to start any specific logic or updates.
• Deactivation: When a scene is no longer active, it’s notified through the onExit method, allowing it to pause or clean up any ongoing actions.

Usage Examples:

• Loading the Game Menu:

  SceneManager.loadScene(GameMenuScene);
            

• Starting the Game:

  SceneManager.loadScene(GameScene);
            

• Displaying the Game Over Screen:

  SceneManager.loadScene(GameOverScene);
            

Implementation Details:

• SceneManager Class:

  • loadScene(scene: any): void - Loads the specified scene.
  • unloadScene(scene: any): void - Unloads the specified scene.
  • setScene(scene: any): void - Switches to the specified scene.

• Scene Interface:

  • onEnter(): void - Called when the scene becomes active.
  • onExit(): void - Called when the scene is deactivated.

Source:

• src/SceneManager.ts