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Hello, boys and girls.

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And in this video, we're going to check collision and surroundings around the player.

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So at the moment, you can see if I start my game, I can jump and I can jump more and more and more

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and more and more.

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And then basically I can fly.

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But we want to be able to jump only if player is on the ground, how we do that.

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We just need to make sure player is on the ground.

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And for that, we're going to go to the player script and create something here.

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We're going to create a ground check.

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Let's go somewhere below and type private.

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Ball is grounded like that.

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Now we have that.

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Let's go to update and type is grounded equals two x to DD dot recast.

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And now I have my internal suggestion here, but it's not very correct if I put my mouse on the recast

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or I can see what I need.

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So first I need origin from where I'm shooting my recast and for that I'm going to type transform the

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position.

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Transform position is the position of the player exact position he has.

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So it will be basically shot from the middle of the player.

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Then we need direction and because we want to check what's below the feet of the player, we're going

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to do vector to dot down.

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Then we need distance and we did not create that.

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So let's go over here and create public float ground, check distance.

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Very cool.

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Now we put it here.

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Ground check, distance.

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And we can see we need a layer mask because if we don't use layer mask recast, going to detect everything

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he finds, including the player.

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So let's go over here and create public layer mask.

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What is ground?

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Now we type here, what is ground and now we have boolean.

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That is true only if recast from position of the player that goes down in a distance of ground.

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Check in the layer mask.

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What is ground detects something in there.

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Then we go over here to jump button and we can type and is grounded.

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Now let's go back to Unity.

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First, we need to go to layer and layer and add layer ground.

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Now let's select the platform and choose layer round.

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Cool.

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Now we can go to player itself.

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Find what is ground and click ground ground shake distance.

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Let me try to put two.

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So it works.

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I can jump only if I'm on the ground, but it's not very accurate because I cannot see how long is ground

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distance.

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I need to see it.

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For that we're going to create another function back in the code.

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Let's just type on draw gizmos and inside we're going to do gizmos dot draw line and we say from where

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to where from transform position to and is going to be a bit tricky new vector two on the x it should

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be the same.

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So transform position and on the Y it should be transformed position minus ground distance weight sorry,

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transform position dot x and here transform position dot y.

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Now let's go back to Unity and over here we can see our line gizmos.

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Now, if I change my ground check distance, it will change its length so I can fix it as I like.

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And I want to make something like.

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This.

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This is.

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Okay, so maybe 1.4.

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I'm sure this will work properly.

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It does.

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Now, I don't like my jump.

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It's kind of floaty and we're going to fix it quickly.

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We probably going to balance this later again.

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But for now, let's just change gravity scale to four and see this.

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Now his jump is better.

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Maybe gravity skill to three and jump force to 12.

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Yeah, This feels like how it feels.

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And we cannot do endless jump anymore.

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Perfect.

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Now we done here.

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Let's do a bit of cleanup after work.

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It's going to be very simple.

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First, I want to create header and let's put square brackets and type header.

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Then in the parentheses we need to give a name for the header and it's going to be something like collision

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info.

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This will make it look better.

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In the inspector.

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If we go back to Unity, we can see it.

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Can we?

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We cannot.

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We cannot see it because first variable after header is private and to make it feasible, it should

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be public or serialized.

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So let's just move this below and save it.

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Good.

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Now we can see collision info and I probably misspelled that, but it's arranged a bit better.

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We don't need to see this boolean anymore so we can go and type private and the run began.

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Move it below.

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I can move this rigid body above and I'll make Heather move in for.

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Right.

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It looks much cleaner, much more understandable.

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Let's go back to code and change something else here.

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Doesn't make a big difference, but will help us in the future.

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Let's select this line of code.

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Click out.

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Enter Extract Method.

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Check lesion, and I want to be sure I did not misspell that at both places.

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So let me do this lesion.

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I'll just copy it from here.

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Yeah, like that.

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So this one is correct, I suppose.

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Yeah.

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And I copy this and paste it in here.

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Okay.

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Now we have update that is clean.

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Just a couple of functions doing stuff, and we have it clean here.

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Cool.

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We can move to next video.