README.md

🛠️ Practice Task: UnityEvents for Loose Coupling

🎯 Task: Trap and Reward Activation System

You are developing a 2D platformer. Create a scene containing:

• Player (a cube or sprite with Rigidbody2D and BoxCollider2D)
• Finish trigger (BoxCollider2D with IsTrigger flag)
• Trap (e.g., a falling spike or enemy)
• Secret door (an object that should disappear or open)
• Audio manager (an object with an AudioSource component)

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📝 Implementation Requirements

Write a script PlayerTriggerHandler.cs with a single UnityEvent:

public UnityEvent OnPlayerReachedFinish;

This event should be invoked when the player enters the finish trigger.

Do not add any direct references to other objects (Light, Door, Audio, etc.) in this script.

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⚙️ What to configure in the Inspector (without changing code):

Using only the Inspector window, bind the following actions to the OnPlayerReachedFinish event:

1. Play victory sound (call AudioSource.PlayOneShot() or Play() on the audio manager)
2. Activate the trap — enable a component that makes the trap dangerous (e.g., Behaviour.enabled or GameObject.SetActive(true))
3. Deactivate the secret door — disable its GameObject (or play an opening animation)
4. Display text "Level complete!" (use TextMeshPro or UI.Text)

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🔍 Bonus task (with a star)

Create a second script ScoreCounter.cs with a public method AddScore(int value). Bind it to the same event, but pass a parameter of 5 points.

Hint: UnityEvent allows you to select a method with an int parameter — a value input field will appear in the Inspector.

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✅ Success criteria:

• The PlayerTriggerHandler script has no variables of type Light, Door, AudioSource, Text, etc.
• All reactions to the event are configured only through the Inspector.
• When the player enters the finish trigger, simultaneously:
  • A sound plays
  • The trap activates
  • The door disappears / opens
  • Text appears (and points are added if the bonus task is completed)

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💡 Hint

Don't forget to click "+" in the event's Inspector field for each action. You can bind multiple methods to a single event — they will execute from top to bottom.

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⭐ If this project was useful, put a star on GitHub!