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How would I use CFrame angles to make my head look at my mouse position?

Asked by

11 years ago

I've tried once, haven't gotten the hang of it. This is quite demanded by FPS games, such as Battlefield. Here's my amateur attempt at so:

01player = game.Players.LocalPlayer
02character = player.Character
03 
04neck = character.Torso["Neck"]
05originalNeckC0 = neck.C0.p
06originalNeckC1 = neck.C1.p
07 
08local tool = Instance.new("HopperBin",player.Backpack)
09tool.Name = "T00l"
10 
11function onSelected(mouse)
12    print(tool.Name.." has been selected.")
13    coroutine.resume(coroutine.create(function()
14        while wait() do
15            neck.C0 = CFrame.new(originalNeckC0,-mouse.Hit.p)
16            neck.C1 = CFrame.new(originalNeckC1,mouse.Hit.p)
17        end
18    end))
19 
20end
21tool.Selected:connect(onSelected)
 View all 21 lines...

It doesn't work. Not sure why. Any help?

2 answers

Answered by

MrNicNac 855

11 years ago

Joints work in object-space coordinates. You need to be editing the C1, because the C0 should only be used to mark the joint location.

C0 is the positive "push" away from the center of Part0. This is where the two parts will be joined. C1 is the negative "push" away from C0 where Part1 will be oriented and positioned.

The following is an edited version of your code. All I did was change the area where you edit the C1 property in the coroutine. All you need to do there is get the world-space CFrame where you make the head face a position. Then, transform these coordinates to object-space. Like I said earlier, you need to reference how C1 is calculated to make sure you transform it to the right object-space.

To recap, C1 is in reference to the center of Part0 and then pushed by C0. So, in CFrame, it's

TorsoCFrame * C0

01player = game.Players.LocalPlayer
02character = player.Character
03 
04neck = character.Torso["Neck"]
05originalNeckC0 = neck.C0.p
06originalNeckC1 = neck.C1.p
07 
08local tool = Instance.new("HopperBin",player.Backpack)
09tool.Name = "T00l"
10 
11function onSelected(mouse)
12    print(tool.Name.." has been selected.")
13    coroutine.resume(coroutine.create(function()
14        while wait() do
15            neck.C1 = (CFrame.new(character.Head.Position, mouse.Hit.p)):toObjectSpace(character.Torso.CFrame * neck.C0);
16        end
17    end))
18end
19 
20tool.Selected:connect(onSelected)

You'll probably see a bunch of free-model code (and even some mainstream developers) do it using C0, or a combination of both C0 and C1. Don't pay attention to that. They might be able to get by doing it, but that's not the correct way. It's much simpler to just figure out how joints work and then try doing editing with them.

Thank you! kayden963 25 — 11y

-3

Answered by

istiyak 13

11 years ago

im not a good scripter but i think this is the problem: you know line 14 in your script

14I while wait() do

i this you should put a number in the brackets because you arent saying how long you need to wait this might not work but im trying to help

You don't need to put a number inside of the parentheses. wait() has a default time it uses if there is no parameter. Minifig77 190 — 10y

How would I use CFrame angles to make my head look at my mouse position?

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