Where to start with making an FPS camera like Doors?

[Aspecky]

I think we can all agree that the first person camera in Doors is very well done and I’d like to replicate the same system, but I have no idea how to start, roblox already handles the movement and camera for you with the PlayerModule that goes into your player instance. Should I delete or edit or better yet, is there any good quality open source first person camera scripts out there?

[WhiteOut_RBLX (WhiteOut)]

Doors uses the default PlayerModule, just edits the camera behaviour with a script and the CurrentCamera CameraType set to Scriptable

[ContemporaryMoment (ayden)]

Lerping & Springs is your best bet for something like Doors. That’s typically what I do when I write custom camera code. You could fork the camera module and go from there but I recommend you write your own camera code without relying on the default roblox camera scripts.

[Aspecky]

@ContemporaryMoment

Springs

Could you please explain me what springs are, I have seen that word get tossed around in cameras.

[ContemporaryMoment (ayden)]

Here’s a good visualization of what a spring looks like. I’m not sure how to explain it but it sort of ‘overshoots’ the target destination a little bit then goes back to the target destination, hence creating the spring like effect.

[Aspecky]

I see, thanks for the visualization, but how would I apply this to the camera’s CFrame to give it that springy effect? I really cant wrap my head around how to do it, any help would be hugely appreciated.

[dthecoolest]

You can start by trying to figure out how to adjust this number that overshoots and putting that in a rotational CFrame.

Something like an fps view model for example, putting the value in CFrame.Angles or CFrame.fromAxisAngle also uses @AxisAngle module that @ContemporaryMoment put as the desmos graph I believe.

Spring Module but for CFrames

Here made something, cool to spring up your FPS view model: It’s a local script which uses Quenty’s spring module to add a spring effect to the otherwise static view model. Before spring: After Spring: Code, insert into your starterCharacter scripts as a local script and test it out. Values for the spring will need adjusting of course. –Edit: Here’s a better working version with the dampening actually working, messed up the previous CFrame calculation. Still have no …

However you could need a method of getting the camera “true” CFrame before any effects such as shake or aformentioned spring is applied. Or else the camera will shake forever which I have experienced. However I will let you try this on your own perhaps you have your own method.

Something like the example script here which tracks the rotation through mouse delta.

https://developer.roblox.com/en-us/api-reference/function/UserInputService/GetMouseDelta