Unity Create a Game Series (E06. enemy attacks)

In episode six we implement enemy attacks.

FAQ:
Q: Game crashes when enemy attacks
A: Make sure that the yield statement in the UpdatePath coroutine is OUTSIDE the currentState == State.Chasing condition.

Source code:

Follow me on twitter @SebastianLague

[SebastianLague]

Hey, welcome to episode 6 - enemy attacks. I hope my explanations were ok this video - I feel like I might have been a little unclear on some points... Let me know! :)

A huge thanks to everyone who has supported so far!

[Noob-ncjq]

coroutine, navmesh system.. I can't believe how much super useful content in one series compares to the garbage in udemy stuff lol.

and you also used vectors instead of simple float/int variables to make the player/enemy move, which is basic linear algebra stuff but understands them will be important for shaders as well.. man, I HOPE my university will hire you for this stuff... and the animation using Lerp with a math function... and this is a tutorial 4 years ago... :( how far I can code like this elegantly.. just typing along with you helped me learnt a lot, , ty again

[chelarucatalin]

Q: Game crashes when enemy attacks
 A: Make sure that the yield statement in the UpdatePath coroutine is OUTSIDE the currentState == State.Chasing condition.
or
currentState = State.Attacking;
 StartCoroutine(Attack());
currentState = State.Chasing;

[NightTerrorsNetwork]

This series is absolutely fantastic, I have been trying to get into unity as a developer for years but other tuts are so slow paced. Perfect for anyone coming from a development background.

[tonydelacruz]

I was wondering if you can help me out in 9:25 of the video . Instead of I trying to make this work with a box collider. Can you help please.

[khaliesahismail]

Hello there. I was following your tutorial just fine and my code works but having trouble understanding your explanation at time 10:22 on line 75 and 76. You wrote:

Vector3 dirToTarget = (target.position -
Vector3 targetPosition = target.position - dirToTarget * (myCollidionRadius + targetCollisionRadius);

Could you explain in some other way? Really appreciate it.

[easyBob]

Old vid, but great. :)

A quick note on state machines. Enums and switch/if statements are fine for simple games, but once you start to make something more complicated, you may want to look into making states into objects using polymorphism, and the factory pattern for updating/changing states. That way, if you make a change to something, you won't have to possibly look through many scripts to update them. If you add/remove states, you just need to edit the factory, and if you change how a state acts, you only need to update a single object.

A quick example is how he has the two IEnumerables in the one class, and needs to check to make sure he's in the right state in one of them. Why do that when the state object itself can call the right one, and not even worry about the second one, because it will be in a different object.

[decentcarp]

At 11:34 my Enemy still goes into the player itself, any help?

[belleluze]

tutorials are always great thanks, this one I think you might have gone a little to fast on the explanations so it was a little confusing especially when it came to the math. other then that great work!
I'll be showing my support!

[wbeecroft]

Im getting this error
NullReferenceException: Object reference not set to an instance of an object
Enemy.Update () (at Assets/Scripts/Enemy.cs:40)

Apparently this line isnt functioningtarget = why but it never assigns it to the player. It worked for a bit until i added attacking

[vtum]

Anyone still around here to answer a question? I'm following this tutorial and it seems that whenever an enemy Lunges at the player, it isn't lunging at the player but the position is being set to a location above the player and then it comes back to the player then every time it lunges it goes back to this location above the player.

[dylanlewis]

When you create the State enumerator, are the values inside 'State' type. I thought State was just the variable name and not the type. In the C# documentation is says to specify type after the name,
example: public enum States : State {Idle, Chasing, Attacking}.
Is the enum variable name and the data type of its values both 'State'?

[vivighostbadkali]

So i have everything working but the enemies are attacking from across the map. I have my player and spawner on diffrent sides of the map and when an enemy spawn it lunges across the map and its color is red. Dont know how to fix this please help.

[morphman]

I don't know why, but I'm at 9:05 in this video, and when the enemy lounges, it hits my character, then goes back to its original position, then Unity crashes. I have no clue what is causing the crash. I've gone back and checked twice, my code is exactly like yours.

[jean-michel.houbre]

I love this series !
I added at the end of the start method of the enemy this line:
pathFinder.stoppingDistance = pathFinder.radius + + attackDistanceThreshold / 2;
I also modify this line in the coroutine Attack() : while (percent < 0.5f) and add this line at the end : transform.position = original.position;

It allows enemies not to enter the player's body in Chasing mode and nicely to attack.

[bazzboyy]

Could someone possibly explain to me why we have to square the disToTarget? Thanks

[bimboleiro]

1:00 Is there a reason why .sqrMagnitude is better than .magnitude?

[deniskhomenko]

why not to use capsule collider as trigger, with a bit bigger radius ?

[RobertFriedJ]

Why are you using both "pathfinder.enabled = false" and the State.Chasing or State.Attacking in UpdatePath? Wouldn't currentState == State.Attacking be good enough to suspend the movement and target update in the UpdatePath coroutine?

[thebank]

in this game can we make a camera keep tracking at player when we move ????

do you have a video to teach this tips i follow you to ep 6 now ^ ^

thx anyways