README.md

🎯 Practical Task: "Collector with Obstacles"

📌 Task Description

reate a simple 3D scene in Unity where the player controls a sphere (Player), collects coins (Coins), and avoids or takes damage from enemies (Enemies). The task reinforces the use of OnCollisionEnter and OnTriggerEnter, their differences, and limitations.

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🧱 What to Do

1. Scene Setup

• Create a Plane — the ground.
• Add a Sphere — the player. Assign to it:
  • Rigidbody (non-kinematic, isKinematic = false)
  • Collider (leave IsTrigger = false)
  • A script PlayerController for movement with arrow keys/WASD (or use standard MoveTowards).
• Add 5–10 cubes with the tag "Coin", colored green. They should have:
  • Collider with IsTrigger = true
  • An empty script (or just the tag).
• Add 3 red cubes with the tag "Enemy". They should have:
  • Collider (IsTrigger = false)
  • Rigidbody (kinematic or not — your choice, but at least one Rigidbody must exist in the scene for collisions).

2. Player Script (PlayerController + events)

Write a script PlayerCollisionHandler that contains:

• Stores the values of score and health
• OnTriggerEnter(Collider other) - Collision with a coin
  • Verification via CompareTag("Coin")
  • Increases the value of the score
  • Destroys the coin (Destroy)
  • Displays the message "Coin collected! Score: " + score
• OnCollisionEnter(Collision collision) - Clash with the enemy
  • Verification via GameObject.CompareTag("Enemy")
  • Reduces the value of health
  • Displays the message "Damage! Health: " + health
  • When health <= 0 displays the message "Game over!"

3. Additional Requirements

• Upon colliding with an enemy, the player should bounce back (use Rigidbody.AddForce).
• Play a simple sound when collecting a coin (optional).
• Add a wall with a trigger zone that teleports the player to another point on OnTriggerEnter (use Transform.position).

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🧠 Self-Check Questions

• Why is OnTriggerEnter used for collecting coins instead of OnCollisionEnter?
• What would happen if you removed the Rigidbody from a coin? What if you made its collider non-trigger?
• Why is OnCollisionEnter used for collision with an enemy?

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🏆 Goal

Write working code, set up the scene, and ensure that:

• Coins disappear on touch and increase the score.
• Enemies reduce health and push the player away.
• The trigger zone teleports the player.

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