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‫A very fundamental functionality in unity is the functionality of components.

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‫And components are a super powerful tool.

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‫They allow us to add functionality or looks or physics to an object.

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‫So, for example, our player has a transformed component.

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‫He has a sphere component, sphere measure and the rigid body and so forth.

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‫And those components, they add functionality and looks to our player.

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‫That's a very important aspect that you need to understand because every time that you want to add,

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‫let's say, a different kind of behavior.

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‫So let's say now we have player movement, but what you would like to have is player shooting so that

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‫our player can shoot.

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‫Then you would create a new component and that would be a script component and you would create a new

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‫script or even here a new script and you would create a new script here.

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‫Then you can have different components added to your object.

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‫For example, you could add effects.

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‫So what particle system to your object?

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‫Or you could add even more physics, because so far we have only are a rigid body, we have our sphere

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‫collider and those kind of things.

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‫And what if you wanted to, you could add even an additional collider to our sphere, you could add

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‫a box collider.

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‫So as you can see now, our player has two different colliders, the Box and the Sphere.

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‫Collider And that's a new component.

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‫You can add components as you need them, and you can remove those components any time.

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‫And what you also can do is you can copy components and add them to a different object.

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‫So for example, if I would like to have this player movement component in a different object, I could

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‫copy the component here called the component and add it, for example, to our game object.

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‫So in here I would press there and paste component as new.

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‫So press this little button here at the top, paste component as new, and then you have the player

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‫component here as well.

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‫Well, it doesn't make sense for that game object, so I'm just going to remove the component again.

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‫Then if you would like to change the order of your components, you can simply move them up, for example.

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‫So if I want to move this up, this player movement component, I can press and move up.

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‫And as you can see, this action can break the prefab instance there.

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‫Are you sure you want to continue and I'm just going to use cancel.

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‫So let's do the same thing with the prefab.

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‫Let's go to our player and let's move it up now.

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‫So as you could see now, it wasn't very happy with changing that.

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‫So if you want to move something up, for example, move a component up, do that with your prefab and

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‫not with its instance in the hierarchy, because that player here is not the same as that player there.

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‫This is the prefab and that one is the player itself.

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‫So if you make any changes to your player instance within your hierarchy, you can apply it.

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‫So let's say our player here has its player movement control component at the second lowest spot or

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‫a third low spot, depending on what you consider as a component.

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‫And that one has a speed of, let's say, 100.

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‫So our player prefab has a speed of 100.

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‫Our player itself now took over that, but we could change it here so we could change the speed of our

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‫player to 20.

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‫Our player prefab, however, would not be influenced by that.

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‫So let's have a look at that if we want to apply this.

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‫So if we want to save the information that we have changed in here and save them to our prefab, we

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‫need to click apply.

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‫All right.

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‫So that's very important.

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‫If you want to make any changes and apply them, press on apply.

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‫And now our player prefab itself will also have the speed of 20.

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‫All right.

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‫So that's about components and a bit more on prefabs.