components in Unity.

As with other components in Unity they can

be applied to objects and are seen

in the inspector.

With this particular example, this cube

has a rigidbody component which gives it

a physical mass. And when you press play

the cube falls to the ground

as it uses gravity.

We also have added an examples script.

This behaviour script has code in it

which changes the colour of the cube

by effecting the colour value of the

default material attached to that object.

When we press the R key on the keyboard

the colour gets changed to red.

When we press G the colour gets

changed to green. And when we press B

it gets changed to blue.

By attaching this script to the object

when we refer to game object

we're referring to this particular item.

We then drill down to the value that we want

and effect it. Here we're addressing the

game object this script is attached to,

we're then addressing the renderer,

which is the component seen here,

mesh renderer. We're then addressing the

material attached to that renderer and

finally the colour of that material.

And we're setting it to a shortcut called red

which is part of the colour class.

Let's see this in action.

If I press play, then use the R, G or B

keys on the keyboard I can change the colour.

And you can see that the material

is being effected.

So this material is applied to the renderer,

default diffuse, you can see that listed there,

and we're then effecting the main colour value

and setting it to a certain value in here.

The same as it would if I was actually

doing it by hand in the editor.

Scripts can be created in the project panel

by choosing Create and then choosing

a language of your choice.

For example,

they can then be attached to objects either

by dragging and dropping

or by choosing the Add Component button

at the bottom of the Component menu

and then choosing from the list of scripts

in your current project.

Scripts can also be created using the

Add Component button by choosing

New Script from the bottom and naming

the script and selecting a language type

from the drop-down menu.

This can then be created and added in one step.

The final way to add a script to your

object is to select the object in the hierarchy

and then choose Components - Scripts

and then choose from the list of scripts

in your current project. Of course you can

apply scripts to do all manner of other

behaviours of objects. Try to think of

scripts as components that you create

yourself, allowing you to create

behaviour for different game objects in

your game, this could be characters,

it could be environments or it could be

scripts that manage the functionality

of the game.

This example script that we've looked at

is written in C# but in Unity

you can write in Javascript, C# and Boo.

Boo is a derivative of Python, though

it's not as commonly used as the other two.

So you'll likely see Javascript or C#

examples when you see scripting

from Unity around the web. The videos

that you see in this learning area

will be written in C# but we'll also

provide the Javascript equivalent

beneath the video.

Subtitles by the Amara.org community