Please help with a lava block script

[tropic sky]

So I'm a new dev trying to learn the basics so I used the tutorial provided by roblox. But I'm confused on what line 4 and line 5 mean and do

[soft nebula]

I think it means that if another part touches a part it does a function, so if a humanoid touches that part it dies

[hybrid tangle]

local lava = script.Paremt

local lava is a variable
script.Parent is used when we place a script inside of something we want to use

so now local lava = that part

local function kill(otherpart)

a function is like a recipe, the steps inside are the instructions , so we call the function and it executes the code inside

the kill part is the function name so to call the function you would use

kill()

otherpart sometimes called hit is whatever comes into contact with the part, we use this to get the player who touched the part

Line 4

local partParent = OtherPart.Parent

this is PartParent

its your character

your character just means your model when you run the game

so line 4 is just finding out
who touched the part?

so we can then do something with that player later, such as kill them

line 5

local humanoid = partParent:FindFirstChild("Humanoid")
    print(humanoid)

if we print it, it just outputs humanoid

ingame you will notice theres an object called "Humanoid" under your characters model

thats why we use findfirstchild it just means look for the first thing inside the character called "Humanoid"

The reason we use humanoid is because thats where your health is stored

if humanoid then

this is just a "sanity check"
all it means is does humanoid exist?

humanoid.Health = 0

as you saw inside Humanoid is a Health value

so to change that health value and kill the player we just reference it

Humanoid.Health

then set that to 0

i hope ive explained it well any questions feel free

@tropic sky

[tropic sky]

One thing what does partparent mean and why not part.parent
@hybrid tangle

[keen pine]

** You are now Level 1! **

[hybrid tangle]

so parentPart is just what they named it
you can name it whatever you want but they named it as its the parent of whatever touched the part

in programming you have parents and children
children are whatever is inside of a parent

if you have a folder and a script inside it
the folder is the parent
the script is the child

[tropic sky]

wait so is otherpart also just what they named it?

[hybrid tangle]

yes usually you name that "hit" as its whatever hit the part but you can name it anything

you have to remember even other parts can set off the OnTouch
not just players so you need to account for that

[tropic sky]

So is that why for deathblocks we make it check if its a humanoid/player?

[hybrid tangle]

yes its a sanity check as it makes sure there is a humanoid before trying to do humanoid.Health = 0

or else it would error saying "um the part touching me doesnt have a humanoid"

local LavaPart = script.Parent

local function kill(hit)
    local parent = hit.Parent

    if not parent:IsA("Model") then return end

    local humanoid = parent:FindFirstChild("Humanoid")
    if humanoid then
        humanoid.Health = 0
    end
end

LavaPart.Touched:Connect(kill)

if not parent:IsA("Model") then return end

this is known as a guard, it checks if the thing touching has a model before resuming the code

if its not a model it stops right there

[tropic sky]

My last question is why is lava.Touched:Connect(kill) not with the other lines

[hybrid tangle]

so in programming anything that calls a function has to be under the function

this is because code works top down

[tropic sky]

Thank you for helping me

[hybrid tangle]

local LavaPart = script.Parent

LavaPart.Touched:Connect(function(hit)
    local parent = hit.Parent

    if not parent:IsA("Model") then return end

    local humanoid = parent:FindFirstChild("Humanoid")
    if humanoid then
        humanoid.Health = 0
    end
end)

you can also do it like this if you prefere

no worries