Health and Hits

Part of the Physics and Gameplay section of Coddy's Unity journey. Lesson 59 of 63.

Challenge

Medium

The hunters hurt now. Keep everything from the earlier lessons. The Player has the Health script (the Inspector sets hp to 3), and the Hunter prefab sets a new knockback field to 12.

Fill in Health:

A public method TakeDamage(int amount) that takes amount off hp and logs what is left, as HP: 2.
When hp reaches 0, log Game over and turn off the player's Player script, so the arrows stop working.
Once hp is 0, further hits do nothing: no change and no log.

Add to Hunter:

A knockback field.
When a hunter bumps into something that has a Health (only the player has one), call its TakeDamage(1) and knock it back with an Impulse of knockback, straight away from the hunter across the ground.

Press Play and see how long you last, then Check.

Try it yourself

using UnityEngine;

public class Health : MonoBehaviour
{
    // A later lesson fills this in: the player's hit points.
}

All lessons in Physics and Gameplay

1Rigidbody

Gravity and Mass Push with AddForce Jump with an Impulse FixedUpdate for Physics Velocity Kinematic Bodies Recap: Launch Pad

4Coroutines

Invoke InvokeRepeating, CancelInvoke Your First Coroutine Loops in Coroutines Stopping Coroutines Recap: Countdown

7Rotation

Euler Angles Quaternions Face the Way You Move Turn Smoothly Recap: Turret

10Project: Arena Escape

The Arena Hunters

Waves

Health and Hits Project lesson

The Exit

2Collisions

OnCollisionEnter What Did I Hit?Break on Impact Standing on the Ground Bounce and Friction Collider Shapes Recap: Breakable Wall

5Project: Coin Rush

The Rolling Ball Coins to Collect

8The Camera

Smooth Follow Orbit Camera Look Ahead Camera Shake Recap: Chase Camera

11Final Challenges

Cannon Range Marble Golf Escape Room

3Triggers

Trigger Colliders OnTriggerEnter Pickups Kill Zones Enter and Exit Recap: Key and Door

6Raycasts

Physics.Raycast RaycastHit Ground Check with a Ray Layers and LayerMask Line of Sight OverlapSphere and SphereCast Recap: Laser Tripwire

9Enemies

Chase the Player Chase in Range Patrol and Chase Health and Damage Knockback Recap: Guard Dog