roblox-ts•3w ago

How do you deal with multiple calls of FindFirstChild(), WaitForChild(), etc?

I'm new to both Rojo and Roblox-ts. One thing I noticed is that when I'm trying to access children of Instances is I'm having to repeatedly use FindFirstChild or WaitForChild or other methods and then having to use type casting or checking if the instance exists before finding the next child and so on and so forth Original luau code that looked like this:

local track = self.Humanoid.Animator:LoadAnimation(ReplicatedStorage.Animations.Animation)

local track = self.Humanoid.Animator:LoadAnimation(ReplicatedStorage.Animations.Animation)

Now looks like this

private getHumanoid(): Humanoid {
  return this.getCharacter().WaitForChild("Humanoid") as Humanoid
}

private playAnimation(){
  const track = (this.getHumanoid().FindFirstChild("Animator") as Animator).LoadAnimation(((ReplicatedStorage.FindFirstChild("Animations") as Folder).FindFirstChild("Animation") as Animation)
}

private getHumanoid(): Humanoid {
  return this.getCharacter().WaitForChild("Humanoid") as Humanoid
}

private playAnimation(){
  const track = (this.getHumanoid().FindFirstChild("Animator") as Animator).LoadAnimation(((ReplicatedStorage.FindFirstChild("Animations") as Folder).FindFirstChild("Animation") as Animation)
}

I find this approach very annoying and ugly but I could just be missing some simpler and more elegant way

Solution:

http://npmjs.com/package/@rbxts/validate-tree

npm

@rbxts/validate-tree

Validates whether a given instance matches a given instance tree. Latest version: 2.0.2, last published: 3 years ago. Start using @rbxts/validate-tree in your project by running npm i @rbxts/validate-tree. There are 6 other projects in the npm registry using @rbxts/validate-tree.

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7 Replies

OverHash•3w ago

Often I'd use something like validate-tree

Solution

OverHash•3w ago

http://npmjs.com/package/@rbxts/validate-tree

npm

@rbxts/validate-tree

OverHash•3w ago

There's something somewhere where in studio I can click on an instance and it will generate me the tree there, so I don't manually write it There are other options on the market too, if you use Flamework for example: https://discord.com/channels/476080952636997633/1381337010387816598/1381346766166823084

NatFletchOP•3w ago

Yeah I'm porting an existing game so I don't really have much flamework stuff rn

NatFletchOP•3w ago

https://roblox-ts.com/docs/guides/indexing-children/

Indexing Children | roblox-ts

New roblox-ts users often ask, "How can I index a child in the game like game.Workspace.Zombie?"

NatFletchOP•3w ago

Okay I found this which is the studio feature I think you're talking about

OverHash•3w ago

yup

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Programming

How do you deal with multiple calls of FindFirstChild(), WaitForChild(), etc?

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