Introducing generalized shapecasts

[TheReal4Cedar123 (Cedar)]

I can’t wait to start using this, it brings lots of potential! Is there any plans for more features like this in the future?

[LightningLion58]

Thank you for this!
Finally, we can easily make differently shaped hitboxes (for melee and projectiles).

@subcritical

We’ll be adding an optional “cframe” param to override the part’s original CFrame later this year.

And yes, it would be very nice indeed to have an option for a CFrame override so that the part can be used in multiple locations without having to move it manually (via code).

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I do have one question in mind, can we re-use the same part for multiple casts in different locations with the overide feature?

[rabbi99 (Stellar)]

Seems useful for something like a building system or item drop system. A great addition to the Roblox engine. Can’t wait to see further improvements in the future

[yoshicoolTV (coolyoshi)]

Sounds really good. Finally can use something that can help me with all instances.

Question though, will this not potentially remove Blockcast and Spherecast or set as deprecated?

[Daw588]

Awesome. Were the return types fixed though?

Incorrect type information for Blockcast, Spherecast, and Shapecast methods

The type information for Blockcast, Spherecast, and Shapecast methods are incorrect; they are suppose to return RaycastResult?, just like the Raycast method, but they claim to return RaycastResult. [image] [image] [image] [image] This can lead to bugs in developers’ code due to the lack of acknowledgment that the methods may return nil. [Code_oNZqkULlTm]

[subcritical]

Blockcast and Spherecast will live on for when you don’t have a part to cast from.

[astraIboy (The Batman)]

Could someone give me an example where I’d wanna use this?

[subcritical]

Thank you, we’ll get this fixed!

[jaysonp1pro]

Awesome! Is this possible to use with unions?

[Daw588]

@subcritical

These allow you to cast any arbitrary part into the world: Blocks, spheres, cylinders, wedges, CSG, MeshParts, etc.

This is stated in the post. Unions are part of the CSG system, so yes.

[ExercitusMortem (Exercitus)]

Could use it for an accurate melee system, where the blade of the sword is cast in the direction of the swing, to see if it hit anything

[Azrellie (FxmboyStormie)]

Now this is quite nice to see. What else are we expecting in the future regarding shapecasts aside from the ones mentioned?

[Kironte]

Sounds amazing! Does this support EditableMeshes? If not, I think that should be a crucial feature since lots of us are planning on using them as much as possible. It would also make custom physics engines much more efficient since the collision logic wouldn’t be in Luau.

[Artoshia]

Due to the nature of the way shapecasts work. I’m guessing a cone cast is still relevent because a shapecast will make a cone shaped mesh look more like a cylinder if the direction value is used accordingly. If anyone can correct me on this that’d be helpful.

It just would be nice to have a fast method for detecting if something is within “view” of say another object, like an NPC, or a targetting system.

[Sir_Pixelated]

Uh so the shapecasts ignore the precise convex decomposition property of mesh and unions, it will always use the default collision, and it’s kinda annoying for projectiles, will this ever be fixed?

[ZacAttackk]

PLEASE add visualisations for raycasts for developer debugging reasons! It’s super inconvenient trying to check to see if our raycasts are being done in the correct manner.

[lolmanurfunny (lolman)]

Does WorldRoot:GetPartsInPart() supersede WorldRoot:GetPartBoundsInBox()?

No… alright, so no.

[subcritical]

They use whatever the current decomposition geometry is. Precise mode should work - can you provide a repro?

[LoadingL0n3ly (Fedor)]

You can use existing Gizmo libraries to achieve the same effect, this is the one I use:

Ceive ImGizmo - A debug gizmo library

A performant immediate and retained mode gizmo library. Ceive was made in mind for both performance, immedate mode and retained mode, after I looked at the lack of good gizmo librarys on roblox I set out to create one that was not only more performant than other librarys. But was also easier to work with and had more capabilities. (The name Ceive ImGizmo is derived from Perceive and Immediate Mode Gizmo) Github Demo The demo place can be found here: Gizmos Demo - Roblox Some performanc…