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| __TOC__
| | #redirect [[Function Dump]] |
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| ==Built-In Functions==
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| There are many pre-made functions in the Object Browser, but this page will be going through the most-used ones. Most of these functions either use a pre-existing brick or delay something from happening. A final note before you start, all built-in functions start with a ":" and end with a "()".
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| ===The "delay()" Function===
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| The delay function waits a certain amount of seconds and then executes a function on a new thread.
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| {{Example|
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| <pre>
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| print("Hi!")
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| delay(3, function()
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| print("Bye!")
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| end)
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| </pre>
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| }}
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| ===The "wait()" Function===
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| The wait function will delay, or wait, by a number of seconds. The difference between this and the 'delay()' function is that this will not execute a function after the amount of seconds is waited.
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| print("Hi!")
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| wait(3)
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| print("Bye!")
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| In the output, this prints the word "Hi!", waits three seconds, then prints the word "Bye!".
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| See [[Scripting#Globals|this page]] for more details on these functions.
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| ==Useful methods==
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| ===The ":Clone()" Method===
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| This method does it what it says - clones, or makes a copy of, an object. When an object is cloned, the result will have no [[Parent]], so the clone won't exist until you "parent" it to another object.
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| game.Workspace.Brick:Clone().Parent = game.Workspace
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| If you are creating a script that makes a [[Part]] that has a [[Decal]] on it, the easier thing to do is to clone the brick, define its position, then parent it.
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| ===The ":FindFirstChild()" Method===
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| This method is used to find a child object with a certain name. This is very useful for determining whether something is there or not, as it returns true or false, true if the object exists.
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| You might think you could write a script like this:
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| script.Parent.Touched:connect(function(part)
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| local humanoid = part.Parent.Humanoid
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| if humanoid then
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| --The part was touched by a player
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| print("Hello, player!")
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| end
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| end
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| However, this will error if the part's parent doesn't contain a humanoid. In the following code, humanoid will be nil if there is no humanoid in the part's parent, but it will not error.
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| script.Parent.Touched:connect(function(part)
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| local humanoid = part.Parent:FindFirstChild("Humanoid")
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| if humanoid then
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| --The part was touched by a player
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| print("Hello, player!")
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| end
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| end
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| ===The ":GetChildren()" Method===
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| This method returns a table of the object's children. The following code shows how it can be used to count all the parts in the workspace
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| bricks = 0
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| for object in ipairs(game.Workspace:GetChildren()) do
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| if object:isA("[[BasePart]]") then
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| bricks = bricks + 1
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| end
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| end
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| print(bricks)
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| ===The ":Remove()" Method===
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| The Remove function changes the Parent of an object to [[nil]], and also calls Remove on all of its children.
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| game.Workspace.Brick:Remove()
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| This method should not be used any more, since there are better alternatives, whatever you want to do. If you want to temporarily take the object out of the game's hierarchy, use ".Parent = nil" to take the object out of the game in a way that you can get it back later. If you want to completely take it out of your game, use the Destroy method.
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| === The ":Destroy()" Method ===
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| Unlike the Remove method, the Destroy method completely removes an object. Destroy removes all connections, and locks the object so that it can't be put back into your game. This method is better then :Remove() because it cleans up the memory used by the object.
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| game.Workspace.Brick:Destroy()
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| ===The ":MakeJoints()" Method===
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| MakeJoints forms a bond (a joint) between touching bricks if they have the required surfaces types:
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| {| class="wikitable"
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| ! SurfaceType !! Weld !! Universal !! Studs !! Inlet !! Glue !! Smooth
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| |-
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| ! scope="row" | Smooth
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| | Weld || No Joint || No Joint || No Joint || Glue || No Joint
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| |-
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| ! scope="row" | Glue
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| | Weld || Glue || Glue || Glue || Glue
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| |-
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| ! scope="row" | Inlet
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| | Weld || Snap || Snap || No Joint
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| |-
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| ! scope="row" | Studs
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| | Weld || Snap || No Joint
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| |-
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| ! scope="row" | Universal
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| | Weld || Snap
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| |-
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| ! scope="row" | Weld
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| | Weld
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| |}
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| It can be invoked on both parts and models:
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| brick = game.Workspace.Brick
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| brick:MakeJoints()
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|
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| model = game.Workspace.Model
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| model:MakeJoints()
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| ===The ":BreakJoints()" Method ===
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| This method breaks all joints already made. Running this on a building grouped into a model might cause it to crumble, although bricks stacked on each other will be unaffected until another force acts on them. Once again, this method can be invoked on both models and parts
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| brick = game.Workspace.Brick
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| brick:BreakJoints()
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|
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| model = game.Workspace.Model
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| model:BreakJoints()
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| ===The ":GetMass()" Method ===
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| So, ever wondered how heavy a brick is in ROBLOX? The GetMass() method is just for that! It is the same as multiplying all the components of the size of the brick together. NOTE: Editing mass is not possible, as it is a returned value from a method, not a property.
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| brick = game.Workspace.Brick
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| print(brick:GetMass())
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| --This is the same as...
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| brick = game.Workspace.Brick
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| print(brick.Size.X * brick.Size.Y * brick.Size.Z)
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| If density existed in ROBLOX, GetMass() would multiply the size components and the density. For the time being, all parts in ROBLOX have a density of 1.
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| ===The ":MoveTo()" Method ===
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| The MoveTo() function has two different uses. The first is usable on a [[Model]] or any type of [[Part]] (see [[BasePart]].)
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| {{Example|
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| <pre>
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| --Used on a model...
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| model = game.Workspace.Model
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| model:MoveTo(Vector3.new(0, 0, 10))
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| --Used on a Part...
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| brick = game.Workspace.Brick
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| brick:MoveTo(Vector3.new(0, 0, 10))
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| </pre>
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| }}
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| The second use of MoveTo() is to force a Humanoid to walk to a location to the best of its ability. The Humanoid will continue to walk in that direction until it reaches the destination.
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| This version of MoveTo() requires three arguments, the first is given by the : operator, and is the Humanoid. The second is the target location, and finally, the third is the [[BasePart]] the Humanoid is walking on to get to the destination.
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| {{Example|
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| <pre>
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| Character = game.Workspace.SomePlayer.Humanoid
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| Base = game.Workspace.Base --Assuming your baseplate is named "Base"
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| Character:MoveTo(Vector3.new(15, 0, 10), Base) --Tell Character to talk to (15, 0, 10) on Base.
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| </pre>
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| }}
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| ===The ":GetPlayerFromCharacter()" Method ===
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| Ever needed to find out what player(not character) touched your brick in you button script? The ":GetPlayerFromCharacter()" Function makes it easier than actually searching the players with the previous ":FindFirstChild()" and ":GetChildren()" functions. What it does is automatically search an area for a the player that represents the character. If an Instance's "Controller" is "Player", you can use this function.
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| {{Example|
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| <pre>
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| DB=false
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| function onTouched(hit)
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| if DB==true then return end --if debounce is active then end the function
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| DB=true
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| if hit.Parent:FindFirstChild("Humanoid")~= nil then --If touched by a player then
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| if game.Players:GetPlayerFromCharacter(hit.Parent)~= nil then --If there is a player that goes with the character then
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| local player = game.Players:GetPlayerFromCharacter(hit.Parent)
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| player.LocalStats.Cash=player.LocalStats.Cash + 5 --add 5 more cash
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| end
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| end
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| wait(1)
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| DB=false
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| end
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| script.Parent.Touched:connect(onTouched)
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| </pre>
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| }}
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| That script will change give 5 cash to the local stat of cash if you touch it.
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| ===The "lookVector" Property ===
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| There actually is a CFrame function to find which way you are looking. What this function does is find exactly which way your front is facing. The "lookVector" function can be used for several different situations, e.g., tools, planes, robots, cars, etc.
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| {{Example|
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| <pre>
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| while true do
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| wait()
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| --[[ print(game.Workspace.Player.Torso.Velocity) If you want to print the velocity of your player as you go
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| along, use this. Change "Player" to your username. --]]
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| --[[ print(game.Workspace.Player.Torso.CFrame.lookVector) If you want to see the lookvector of your player
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| printed out as you go along, use this. Change "Player" to your username. --]]
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| game.Workspace.Player.Torso.Velocity = game.Workspace.Player.Torso.CFrame.lookVector * 60 --[[Change "Player"
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| to your username --]]
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| end
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| </pre>
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| }}
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| First is 'while true do' loop. Then is the 'wait()' function. The script finds 'game.Workspace.Player,' (or game.Workspace.(yourusername), then it finds my Torso and sets its velocity to the way my Torso is looking by sixty. This means this character will go at the speed of 60 units per second by the way it is facing.
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| == See Also ==
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| [[Function Dump]] | |
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| [[Category:Reference Pages]]
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| [[Category:Pending Removal]]
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