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| ==Image help for my RPG==
| | I'm a noob 23214123543#@$%#!%T$#^@$%# |
| [[Image:RPGTut1.png|Picture is loading, please wait]]
| | ^342 |
| [[Image:RPGTut2.png|Picture is loading, please wait]]
| | 5$# |
| [[Image:RPGTut3.png|Picture is loading, please wait]]
| | ^%$#@ |
| [[Image:RPGTut4.png|Picture is loading, please wait]]
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| | ^BY |
| | T4GV |
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| Scripting tutorial, Wiki format under construction
| | U all stink |
| --------------------------------------------------
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| ==Lesson-1==
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| --------------------------------
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| NOTE: In this tutorial we will be using the "print()" command. All this does is print whatever is in the brackets to the output bar
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| for example, print(1), makes the text "1" appear in the output bar
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| Also, if in a script you see this "-->" that means, "the outcome of this line is : ", and isn’t actually part of the script. It's a Comment, and wont actually
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| be part of your script, the computer just ignores it.
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| --------------------------------
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| Declaring and using variables
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| What is a variable?
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| A variable is a thing that stores a value. It could be any kind of value, such as a color, position, number, work/sentence etc... In programming,
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| Variables are a core aspect, most (if not all) scripts you make will have them.
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| How do you declare a variable in Lua?
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| Declaring variables in Lua is very easy, all you have to do it put the name of the variable, and then the assignment operator, and then the value
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| of the variable.
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| The only thing to note is that you variable name MUST NOT HAVE SPACES IN THEM, it will mess up your script if they do
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|
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| <pre>
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| a = 1
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| b = 3.14
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| c = 600
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| print(a) --> 1
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| print(b) --> 3.14
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| print(c) --> 600
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| </pre>
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| Now we move onto the types of data that a variable in Lua can store, there are 6 main types that I will discuss here.
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| ==Bool:==
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| --------------------
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| The Bool data type is the most simple one, it's either true or it's false, those are the only two things it can be
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| <pre>
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| a = false
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| print(a) --> false
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| a = true
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| print(a) --> true
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| </pre>
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| ==Number:==
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| ------------------
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| Also, a number, quite obvious as well. In Lua you don’t have to worry about the size of a number, like you do in C++, if it's a number it's a number.
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| <pre>
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| a = 1
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| print(a) --> 1
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| a = 3.14
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| print(a) --> 3.14
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| </pre>
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| also, you may see this
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| ##e+###
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| this just means exponential notation
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| 3.5e+004 = 3.5*10^4
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| ==String:==
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| -------------------
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| Now we get to the new stuff....
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| A string, is a "String of characters", it can be one anything from one single letter, to a whole sentence. To tell the computer you are using a string
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| The string must be enclosed in quotes
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| <pre>
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| myString = "Hello, World!"
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| print(myString) --> Hello, World!
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| print("hello!") --> Hello!
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| </pre>
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| The quotes aren’t actually part of the string, they just tell the computer what's in the quotes is a string.
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| ==Object:==
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| --------------------
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| As you already know, ROBLOX is build out of objects. Most of them being of the "Part" class, or bricks, but there are any others as well.
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| What an object Value does is store the memory location of tone of these objects, so that you can talk about it even if it doesn’t have a parent that you can access it through.
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| <pre>
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| a = game.Workspace.Part --we will discuss this next lesson
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| print(a) --> part
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| a:remove() --> removes the part
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| </pre>
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| Next we will look at the compound data types, these are ROBLOX specific, and thus must be called with the .new() command.
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| ==Vector3:==
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| ---------------------
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| A vector3 stores a position in space, based on z-y-x coordinates
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| also, vector3's have a ".magnitude" property in them, which tells you the length of the vector, from one corner, to the opposite corner.
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| <pre>
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| a = Vector3.new(1, 5, 3)
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| print(a) --> 1, 5, 3
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| print(a.x) --> 1
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| print(a.y) --> 5
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| print(a.z --> 3
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| print(a.magnitude) --> [I'm not sure, I'd have to calculate it, but it should be around 6.5]
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| </pre>
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| ==CFrame:==
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| -------------------------
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| CFrames store a position in space, and a rotation matrix, but they're quite complicated, and I will discuss them in a later lesson.
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| ==BrickColor:==
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| ------------------------
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| The brickcolor data type stores the color of a brick. brickcolor, for the purposes of this lesson they return a color based off of a number.
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| You can see a list of all of the codes, and what color they are, in your program files, inside the "res" folder, called "htmlcolortree"
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| <pre>
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| a = BrickColor.new(21)
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| print(a) --> Bright Red
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| a = BrickColor.new(23)
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| print(a) --> Bright Blue
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| </pre>
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| ==How do I use variables?==
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| You use variables in nearly all of the scripts you make as stated before, here is an example of a script that prints a number
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| <pre>
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| addendOne = 1
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| addendTwo = 5
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| sum = 0
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| sum = addendOne + addendTwo
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| print(sum) --> 6
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| </pre>
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| Try putting this in a script in Roblox... Go File>New, and select workspace, and insert a script into it. Then paste this into the script and Press
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| run (the green arrow at the top of the screen), and see what happens.
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| If you don’t have the output window open, then View>Output and it should appear at the bottom of the screen
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| When you run the text "6" should appear in the output.
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| you can try fiddling around some more if you want, and using the division "/", multiplication "*", and subtraction "-" symbols and seeing what happens
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| --------------------------
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| Now you know how to use basic variables, we can move on to How objects work in ROBLOX.
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| --------------------------
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