Where can I find source code for built-in functions?

Help and Feedback Scripting Support
#1
  1. What do you want to achieve? Keep it simple and clear!
    Look at Humanoid:MoveTo() source code, and other built-in functions if possible.
  2. What is the issue? Include screenshots / videos if possible!
    Can’t find it.
  3. What solutions have you tried so far? Did you look for solutions on the Developer Hub?
    I’ve looked in GitHub - Roblox/Core-Scripts: All of ROBLOX's core client scripts. but did not find anything there. Also could not find any similar topics on the forums.
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#2

For move to, Search google Humanoid:MoveTo() roblox and it’ll be there. First website on the page Humanoid | Roblox Creator Documentation contains everything you need

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#3

No, he meant like actual code that run when u execute that function, so the internal core script for humanoid,

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#4

If you want to VIEW script inside studio, do this >

local Target =  -- // The script

print(Target.Source) -- // Prints the source code

-- // If source is 'table' then

or just double click the script, or check out this site >

// Developer.Roblox: Humanoid:MoveTo() //

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#5

Upon further research, it seems that the implementation of built in functions cannot be accessed (probably for security reasons).

local human = Instance.new("Humanoid")
print(getmetatable(human))				-- locked
print(debug.getmetatable(human))		-- disabled
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#6

I mean to be fair if you found the roblox source online you could probably get the moveto function

#7

From 2016:

static Reflection::BoundFuncDesc<Humanoid, void(Vector3, shared_ptr<Instance>)> func_MoveTo(&Humanoid::moveTo2, "MoveTo", "location", "part", shared_ptr<Instance>(), Security::None);

void Humanoid::moveTo2(Vector3 worldPosition, shared_ptr<Instance> part)
{
	PartInstance* p = Instance::fastDynamicCast<PartInstance>(part.get());
	moveTo(worldPosition, p);
}

void Humanoid::moveTo(const Vector3& worldPosition, PartInstance* part)
{
	// client side test here
    Vector3 local = worldPosition;
	if (part)
		local = part->getCoordinateFrame().pointToObjectSpace(worldPosition);

	walkToPoint = local + Vector3::unitX();	// will force replication
	walkToPart.reset();						// will force replication

	setWalkToPart(part);
    setWalkToPoint(local);
}

void Humanoid::setWalkMode(bool walking)
{
	if (TaskScheduler::singleton().isCyclicExecutive())
	{
		walking ? walkTimer = 8.0 : walkTimer = 0;
	}
	else
	{
		walking ? walkTimer = 240 : walkTimer = 0;
	}
	isWalking = walking;
}

void Humanoid::setWalkToPoint(const Vector3& value)
{
	{
		if (walkToPoint != value) {
			walkToPoint = value;
			raisePropertyChanged(propWalkToPoint);
		}

		setWalkMode(true);
	}
	// make sure we aren't moving according to a unit vector at the same time
	setLuaMoveDirection(Vector3(0,0,0));
}

void Humanoid::setWalkToPart(PartInstance* value)
{
	if (walkToPart.get() != value) {
		walkToPart = shared_from(value);
		raisePropertyChanged(propWalkToPart);
	}

	setWalkMode(isWalking);
}

It probably hasn’t changed much since then.

Note that this isn’t Lua, it’s C++.

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#8

I appreciate the effort, but do you have more of the code? Specifically the listener to

or

and if you could provide me with the source that would be great also.

#9

That would be a method in Instance:

void Instance::raisePropertyChanged(const RBX::Reflection::PropertyDescriptor& descriptor)
{
    PropertyChanged event(RBX::Reflection::Property(descriptor, this));
    this->onPropertyChanged(descriptor);
    // security (This ensures the caller has a data model lock)
    if (this->parent && DFFlag::LockViolationInstanceCrash) // fast-path for replication and serialization
    {
        validateThreadAccess(this);
    }

    const PropertyChangedSignalData data(&descriptor);
    combinedSignal(PROPERTY_CHANGED, &data);
    propertyChangedSignal(&descriptor);
    if (getParent()!=NULL)
        getParent()->onChildChanged(this, event);
}

That just fires Lua signals (i.e. Humanoid.WalkToPoint).

No can do, unfortunately. I also can’t provide too many snippets here either as it’s proprietary code and confidential. My forum account could get deleted if I share too much.

What I can tell you is that there was a source code leak in the past. I can’t tell you how to get it or even that you should.

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#10

Where can I find that Code? I really want It

#11

Roblox’s monorepo was leaked in 2016, you can probably find a torrent that claims to have the “Roblox source code” and that is where I found that method.

#12

Thanks!. I really appreciate your response. I have the full source code to a 2016 version of Roblox. Thanks lad!

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