All language subtitles for 1. GDScript Intro Variables

Welcome to the quick introduction to programming.
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If you're a beginner, then definitely don't skip this. Since we will be using code to implement various
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systems,
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it's always a good idea to get up to speed.
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All of the code will be in GDScript,
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Godot's native scripting language.
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Let's look at the core building blocks and how to use them to create more complex functionality.
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First, I want to mention that all of these examples are available in the downloadable project in the
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course. If we look at the variables scene:
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We have the script, by the way.
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We will discuss first about variables.
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Variables are used as data containers.
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They can store numbers, strings and even more complex things as objects, materials and whatever
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the developer needs.
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They do come in more shapes and sizes.
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Usually when creating a new variable, it can store only one thing at a time.
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This is good for values like hit points, damage, speed, etc..
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When we are discussing about variables, a core concept is called a "variable declaration" and that one
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means to let the engine know that we are creating a new variable.
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The declaration goes like this.
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Var which is an operator and then the name of the variable that can be whatever you like.
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I'll just keep it: "a"
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So by doing this
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"var a" I'm actually specifying that hey, I want a variable called a from now on so I cannot use it
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before this. We can also initialize the variable when we declare it by putting an equal and then putting
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a number, a string or an object. To display the variable in the console
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we can use a handy function called print() and then in its parenthesis as a parameter we can specify
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a
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in this case. We can try it by pressing f6 and of course we will get five because that's the value contained
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in the variable E.
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Now let's look at the string and the string is very similar.
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You can see we can just call it string.
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By the way, we can specify the type of a variable by adding colons to it.
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So if I say: string.
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Then this variable will be a string.
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Why is this important?
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Because if we want to assign later another type, then we will get an error because only string is available
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for this one.
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Keep in mind that if we don't put this, then we can assign whatever we want.
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But this will create confusion
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later in the code. A float variable means a number that has decimal points.
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For example, PI, which is 3.1415 and so on and so forth.
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When we need a list of elements, let's say a list of words we can use lists.
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Lists or arrays are also variables.
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The main difference between them is the fact that they can store multiple values chained one after another.
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They are good to store groups of items like inventories, enemies, projectiles. To create an array
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we can declare it as a regular variable and then just use these brackets.
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And we have an array.
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We can also initialize the array as it's here with different values separated through commas.
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Keep in mind that to reference a particular value in this way we can just say array and then in the
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same brackets we can just specify the index starting from zero, which would be one in this case, one
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and two, which would be three.
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So this is 0, 1, 2.
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We can also get the size of an array by calling array dot size and this will return three.
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The array also can be passed, but that is for later on.
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Another type is also vector2, which is a Godot type and vector2 stores, a pair of values x
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and y.
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We can define it like this. And to call it we just say "vec" because that is the name of the variable.
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And vec.x or vec.y
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Of course there is vector3 and more.
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You can find all of the types supported by the GDScript in the link down below.