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Welcome back, my fellow game developers.

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As you can see, we've created some spikes in here.

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So now when we have these bikes,

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if I stand on them, there we go.

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I get damaged. And if I stand and go back,

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I don't get damaged.

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And if I stand and keep standing, I get damaged.

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But now because I'm still invincible,

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I get damaged again.

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If I keep standing in here,

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so I might die,

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I'm going to go away a bit

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and let's not waste any more time.

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And let's get started.

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Oh, okay, so let's get to spike creation.

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And I've already created the spikes and everything.

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Now, this is something that I do not like to do.

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I don't like to do things off screen and then tell you,

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but because I wanted to make sure that

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this video is as efficient as possible,

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It's a long and somethings will need to be explained.

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So for that reason,

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I created all the animations and so on.

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I'll just give you a quick tour.

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So what I did, I chose one of

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these three traps right here.

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I went back in the game.

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I selected the sprites,

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I'm sure it's 32 multiple,

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made sure to edit the sprite and sliced up 32 by 32,

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made the filter, and so on.

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I then went ahead and created this spike trap,

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which has a sprite renderer.

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A animator will get to that and

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a box collider that is just around it,

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which is also a trigger because we

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want the player to walk over it.

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Okay?

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Now I created also an animation for the spike.

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One is idle, one is popping,

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so the idle just stands there, does nothing.

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This will be the default animation.

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And then we have the spikes popping,

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which is in here.

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You'll see I created one to pop this private.

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So there you go. You can see,

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and why would I make it a bit slow?

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I just wanted to give a chance to the player

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to think twice before stepping on there again.

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So it has nothing to do with

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the player wants the player

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stops and it starts triggering.

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And then he has a couple of frames.

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Can move this right here.

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He has a couple of frames to realize

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his mistake and then try to run away from it.

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With that out of the way,

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let's talk about the animator and what we've done here.

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So I created the ival,

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made it the default layer state,

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and then created the two transitions,

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one going 21, going from.

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I also created a parameter in here which

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is a boolean for the BOP spikes.

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And once the pop spikes is true,

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then we go from idle to Pops spikes.

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We don't have any transition duration,

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we don't have any exit time.

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But when we are going back from the bopping,

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we do have an exit time which is

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about 90 percent of the animation.

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We can even increase it to one maybe until

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we finish the entire animation and then we go back.

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I am rather make it 0.57.

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But for some reason when I set it for this,

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the animation in here disappears.

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I'm really confused why this is happening.

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I don't like it at all.

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So 92 maybe in 1906.

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1907 just makes everything disappear,

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which is extremely annoying.

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And I have no idea why this is happening.

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But anyways, we have an exit time

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which is 96 percent of the animation.

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Then we go back. Well that out of the way,

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if you do one, pause the video right now,

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go do everything for that.

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Create all the animations and so on.

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Because I'm going to go ahead and start

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in the scripts by creating a,

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let's call this folder the traps.

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Maybe you'll want to create multiple traps.

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And in here I'm going to create the spikes.

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So right-click, create the C-sharp,

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and let's make it the spikes hit Enter,

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select the spike trap.

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And I'm going to drag these parks in here.

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Now I'm going to double-click and

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open it up and Visual Studio.

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Now, before we continue on,

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let me just explain

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what the main idea or how this spike is going to work.

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Because in just a bit I'm going to issue the challenge

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and I want you to know how the spike will work.

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So the player is walking around,

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whereas the player, they don't player is walking around.

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Then suddenly while the spikes are hidden, hidden,

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he walks over on the spikes and they start popping out.

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So when they do hit him,

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what we want is we want

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the animation to have some kind of

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event system and that event system will damage the blade.

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So we'll need to have

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the damage amount variable will have to get

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a reference to that layer and we

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have to add an event in here that will damage him.

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We also want to make sure that if

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the player is still standing on the spikes,

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we want to keep damaging him.

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Not just get damaged

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once and then skip standing in here and not feel a thing.

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We also want to make sure that when the player

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activates the spikes, he goes away.

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We don't want him to keep getting damaged because while

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the animation of the spikes is

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working and events system will still get triggered,

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or you'll see how everything is

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working when we actually create that.

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But until then, I'm going to issue a challenge

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to damage the deep layer with spikes.

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So first of all, create a variable for the damage and

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the player we should damage

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will need to create the entrepreneur Enter.

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You'll need to start the animation

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and make sure it stops.

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So make sure it stops means that we

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may need and on sugar exit.

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Then you'll need damage

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the player using the event system.

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And finally, I just want you to

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think of what should happen if

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the blur stays on the spikes and then exits.

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So with that out of the way,

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pause the video right now and go do the challenge.

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Okay, welcome back.

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So back in our script in here,

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we are going to get, first of all,

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a serialized field which is going to be of

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type integer and the damage amount.

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Then we are going to create a private void.

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And there's no excuse me, not a private void,

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a private collider 2D,

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and this will be the player to damage.

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Save that.

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Now I'm going to remove the start and

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update if we do need them later on, we can add them.

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It's pretty simple.

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I'm going to create the On Trigger Enter to D.

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I'm going to check if this

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collision.com tag is the layer.

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If it is, then I'm going to get the component which

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is the ending main door.

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And I'm going to go ahead and set the bool,

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which is going to be the letter

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because this is a string reference.

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We are going to get this bikes.

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Bob spikes, copy that.

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And back in here.

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And let's set this pops.

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Bikes, save that.

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And then we'll create a method in

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here which is going to be to damage the player,

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which is a public void damage layer.

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And also we need to set this to true.

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Save that.

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So we are going to damage the player.

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What should we be doing in here?

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We are just going to get the player to

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damage dot get component,

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the player health handler.

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And we are going to go ahead and

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damage layer with the amount of damage.

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And before we forget,

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how are we going to get access to

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this layer damage when the player steps in here?

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What's the problem in here?

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Amount of donors not exist.

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Oh, so sorry.

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Damage amount.

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Where did I get the amount of damage?

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I'm not even sure anyways, in here,

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the player to damage

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is going to be equal to the collision.

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There we go.

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So on Trigger Enter,

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we check, is it the player?

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Yes, we start the pop spikes animation.

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Then we set the player to

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damage as the collision because it's declared,

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we know that then we are going to damage the player.

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And finally, we are going to go back in here.

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What's the problem?

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Okay? Nothing animation and we are

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going to select in the scene.

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So there you go.

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We can see that it starts off, then nothing happens.

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And a couple of seconds we wait and then we book in here,

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I'm going to add the event

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and I'm going to select to damage the player.

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We're going to save that to run the game.

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And we shall see in here that we have a life

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of 600 once I stop on these bikes.

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Yep. There we go.

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It damages us.

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It doesn't damage us because if I go back to the spikes,

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we don't have anything to damage.

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Let's just set it as 100 for now because the life is 600.

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So I think he can take a couple of hits.

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So now we have the spikes.

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Yep, there we go.

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You can see that it removes 100 every single time.

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And because we have this

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invincibility for a couple of seconds,

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the second tip doesn't affect the layer.

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But the problem is,

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you can see that it keeps

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playing and I keep getting damaged.

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So the player died even though he's standing

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outside the perimeter of the sparks.

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So what we should be doing is first of all,

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we need to be stopping the animation On Trigger exit 2D.

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And in here, I'm just going to do

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the same thing I did in here.

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Check for the player.

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And if it is the player that just exited the collision,

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we are going to set this to False,

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save that back in our game.

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And there we go and run the game.

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So now we step in here,

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we get damaged, we step outside.

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There we go.

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We can see that the animation stops,

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but there is something when I stop and go back,

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you can see that even though I'm outside, so step back.

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I am still getting damaged.

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Why? Because the animation in here is still playing.

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Events system is still getting

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triggered and we do know what the player is.

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So to avoid that,

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I'm going to create a public bool.

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And this public bool just so we can see it in

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the inspector will later on set it to private.

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And I'm going to call this

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the give player or damage player,

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or shouldn't damage player,

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I believe is a better name for this.

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Verbs should damage player.

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And once he is inside,

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then the should damage player is equal to true.

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When he's outside the should damage player is false.

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And then inside of the damage player method,

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I'm going to check if we should manage the player.

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Then we are going to go ahead and

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access the player health handler and damage the player.

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So now back in our game,

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we should see that when I run the game,

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we should not damage the player.

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Once I step in here, we should

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damage the player, we get damaged.

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But if I activated and then go outside, there you go.

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You can see that should damage player book, book.

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There we go.

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You can see that I am no longer affected.

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So I hope you enjoyed this video.

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I hope you enjoyed this section.

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I hope you are always staging your files,

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committing your changes, creating reviews.

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And then in the next section we will

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see where this journey takes us.

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So I'm going to go ahead and say in

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here that I created spikes,

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that damage layer, commit the changes.

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And I can see right here and

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the masters how our game is moving along.

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Look how much we did,

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and look how much we still have to do.

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This game is just getting started so I can not wait.

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Let's not waste any more time and I'll see

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you in the next video.