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The objective is we want to be able to build a turtle race,

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where we have multiple turtles to run along a line and then see who actually

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reaches the finish line first. Now here's a question though.

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We know how to build one turtle from the turtle blueprint,

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but what if we need more turtles? How do we get hold of them?

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Well,

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we know that we can use a class or a blueprint to define what a turtle should

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appear like and how it should behave.

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So what it has and what it can do. Now,

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we can then take this class and construct an actual turtle object from it

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which is then doing all the drawing and walking around on the screen.

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So this is what the code has looked like so far. We have Timmy

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which is our turtle object, and turtle coming from the turtle module is the

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class which is used to construct this object.

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But that's not the end of the story because the whole reason why we can have

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these blueprints is so we can make more objects.

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So, we're not limited to just one turtle object.

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We can create as many as we need in the same way that we have created Timmy.

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We create Tommy, Johnny, Jenny, and Benny.

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Even though both Timmy and Tommy are turtle objects,

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they actually function completely independent of each other.

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So in programming, we would say that they are each a separate instance.

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So what does that mean? Well,

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that means that they're each an example of the turtle object.

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So just as you and I are both examples of human objects,

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Timmy and Tommy are both examples of turtle objects.

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And that means that at any moment in time,

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they could have different attributes and they could be doing different things.

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So that means, for example,

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Timmy could have his color set to green while Tommy could have its color set to

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something completely different, like purple.

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Now the fact that each of these objects can have different attributes and can be

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performing different methods at any one time in programming is known as their

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state.

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So the state of Timmy's color attribute is green and Tommy's color attribute is

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purple. So in this case,

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they have different state in terms of their attribute or their appearance.

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But they can also have different state in terms of whether

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if they are doing something. For example,

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Timmy could be asked to move forwards while Tommy is staying completely

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stationary. So Timmy is in the middle of a method call

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whereas Tommy is not doing anything at all. Now in the next lesson,

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we're going to be building out our turtle racing game

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and we're going to see this in action.

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The idea that you could have separate versions of the same object each with a

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different state and acting completely independently from each other in order to

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race against each other. So don't worry if this doesn't make sense

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a hundred percent just yet. Head over to the next lesson

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and we're going to start writing some real code to better understand this

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concept.