Someone Please Explain CFrames And Raycasting And How To Use Them

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#21

I understand it much better. Thanks. But what other things can I do with CFrame other than Position and Orientation?

#22

CFrame is basically just Vector3, EXPECT that Vector3 doesn’t have orientation built in, CFrame does. That’s the only difference between Vector3 and CFrame.

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#23

And I forgot; if you want to add another Position to it, in Vector3 you would do Vector3.new(firstPosition) + Vector3.new(secondPosition), in CFrame you would do CFrame.new(firstPosition) * CFrame.new(secondPosition)

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#24

So if I want to change a part’s orientation. Would I do:

local part = game.Workspace.Part

part.Oriention = Vector3(445, 3, 44) -- Orientation

Or Would I do:

local part = game.Workspace.Part

part.CFrame *= CFrame.Angles(0, math.rad(90), math.rad(90))
#25

Both are the same, expect that I think Orientation is Vector3.new(Z, Y, X) and CFrame.Angles is CFrame.Angles(X, Y, Z)

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#26

Oof the information I gave you was wrong, Orientation is applied in Y-X-Z and CFrame.Angles is Applied on Z-Y-X

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#27

A common use myself for CFrame is pointing a part towards an object. You can do this by something like this: part1.CFrame = CFrame.new(part1.Position,part2.Position) (this will point part1 towards part2)

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#28

That’s deprecated. You have to use lookAt(). Example:

local part1 = game.Workspace.Part1
local part2 = game.Workspace.Part2

part1.CFrame = CFrame.lookAt(part1.Position, part2.Position) -- Vector3 what should be looked at, Vector3 Target
#29

It isn’t marked as deprecated tho, but yeah lookAt should be used

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#30

Thanks so much!!! So what about RayCasting?

#31

Raycasting in a nutshell is just that it just creates an invisible line from the point it starts to its direction

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#32

For example if we did workspace:Raycast(Vector3.new(), Vector3.new(0, 5, 0))
it would make an invisible line starting from Vector3.new(0, 0, 0) going to Vector3.new(0, 5, 0)

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#33

And if from Vector3.new(0, 0, 0) to Vector3.new(0, 5, 0) it hit something that isn’t in blacklist/is in whitelist then it is going to stop the ray and return the rayInformation

#34

Ok, I think I understand. Does this work?

local rCP = RaycastParams.new()
rCP.FilterDescendantsInstances = {game.Players.LocalPlayer.Character}
rCP.FilterType = Enum.RaycastFilterType.Blacklist

local result = game.Workspace:Raycast(Vector3.new(100, 0, 100), Vector3.new(100, 100, 0), rCP)

if result and result.Instance.Parent:FindFirstChild("Humanoid") then
    result.Instance.Parent:FindFirstChild("Humanoid").Health = 0
end
#35

I think so, you gotta test it out to see if it works tho

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#36

But you would need to cast the ray in a while loop or something cuz the line doesn’t stay forever

#37

And you also need to remove the local player from blacklist or it won’t detect him

#38

So I will do white list. Thanks

#39

Yeah that would be fine with whitelist

#40

Yeah doesn’t work.

local a = game.Workspace.A -- This is a part called A



while wait() do
	local result = game.Workspace:Raycast(a.CFrame.LookVector, Vector3.new(100,0,0))

	if result and result.Instance.Parent:FindFirstChild("Humanoid") then
		result.Instance.Parent:FindFirstChild("Humanoid").Health = 0
	end
end