How to make Breakable Glass

[DetailedModuler (Asayama)]

Hi, I know I have lots of questions. But that’s not the point.

Today,I planned to make a breakable glass.

I want to make make it like this for example:

PointO is the breakpoint.
And Point EFGH should be the position of triangles.

I want to make it generate eight pieces of triangle glass, in order to make it simple and lagless .

it should be like this. Hope you guys can help me:)

How to make a breakable glass that generates eight pieces of glass no matter how it rotates.

Left one is not broken, and the right one is broken.

[pro_developer213]

you should make like how i say:

u put the normal glass, when it is touched the broken glass to teleport where the normal glass is (the broken glass needs to have joins) then when the broken glass is teleported break its joins

say if this worked

[DetailedModuler (Asayama)]

I want to make a glass that breaks if it’s in the blastradius.
So, the break point is a random position.

[pro_developer213]

it to be a random point or where the touch is?

[DetailedModuler (Asayama)]

a random point. Because it’s an explosion near the glass.

[pro_developer213]

u should use my idea but with very much break glasses and math.random() but to detect if the glass is touched by the explozion u need to use

UR_EXPLOZION.Hit:Connect(function(part)
if part.Name == "UR_GLASS_NAME" then
--Do stuff

end)
end

[DetailedModuler (Asayama)]

I’m not talking about when to break the glass.
I’m talking about generating eight pieces of glasses.

[pro_developer213]

sorry i can’t make what u want

[JinxFury18]

I found something on roblox forums:

Realistic Glass?

Here is my own version of glass breaking… no sound for my recording software Idk what you mean by “Breaks at certain speed” Making it break when shot or struck is simply how you trigger it. There’s a lot of ways Use the same function that was used to break the glass in the first place game:GetService(“Debris”):AddItem(GlassModelContainer, GlassDebrisLifeTime) It looks like its just a normal sound being played when the fracturing is triggered. Im assuming you really want to know how to actua…

Hope it helps : )

[DetailedModuler (Asayama)]

I saw that, but I still can’t figure out how to make it.(Before you replied me XD)

[JinxFury18]

Well, in that post @Fractality_alt says:

@Fractality_alt

1. Find where the bullet hits the window
2. Find random points on the window surface
3. Run Fortune’s algorithm on the points
4. Turn the Voronoi regions into convex polygons made of WedgeParts
5. Apply a VectorForce to each polygon

I did a quick search on Fortune’s algorithm.

Wikipedia says “Fortune’s algorithm is a sweep line algorithm for generating a Voronoi diagram”

I think a Voronoi diagram simulates breaking glass. Again, Wikipedia says “In mathematics, a Voronoi diagram is a partition of a plane into regions close to each of a given set of objects”

Here’s the Fortune’s algorithm in action, creating a Voronoi diagram out of random points. (Found on Wikipedia)

So @Fractality_alt is saying that you run that algorithm with random points on the window, which are the points where the glass will break. Then, convert the Voronoi regions into wedge parts, and like @pro_developer213 said, teleport them to replace the unbroken glass with them. Then, following @Fractality_alt’s instructions, apply VectorForce to each part? I’m not sure what that means, but it may be important.

@Fractality_alt’s way doesn’t make the glass break into exactly eight pieces, but it simulates broken glass.

[DetailedModuler (Asayama)]

Yeah, but umm. How can I calculate it? bruh

[JinxFury18]

I found a detailed explanation on the web, but I don’t understand that much advanced math, so I can’t help you that much .

But hey, on the bright side I found some code for the Fortune’s algorithm written in Lua.

You should put that code, like, in a modulescript, and require that code inside you main breaking glass code, since if you directly imbed it inside your main code, it might get messy

[DetailedModuler (Asayama)]

Bruh that would will be very hard work.
Come on, Thousands of lines.

[JinxFury18]

Yeah, sadly it is

If you’re not that much of a math wiz, I’ll try to find something easier for you.

[JinxFury18]

I looked at the picture in your original post. It looks like the eight triangular parts form out four rectangles:

I think you can find out the wedge parts’ width and height by subtracting the coordinates of the impact point and the x and y coordinates of the corners of the glass, since its dimensions are the same as the rectangles. Then, you just rotate the parts so that the crack aligns with the impact point.

Maybe, this would be easier for you?

In my opinion, this approach is harder to implement than the Fortune’s algorithm, because you have to do all the rotating, and positioning them so they all fit together. (The choice is up to you )

[DetailedModuler (Asayama)]

I wanted to do it like you said, but I don’t what I’m gonna do with CFrame.

[DetailedModuler (Asayama)]

F point is the position of the Orange rectangle
E point is the position of the blue rectangle
G point is the position of the Green rectangle
H point is the position of the purple rectangle

[DetailedModuler (Asayama)]

So, the triangles in the same rectangle has the same size and position.

[JinxFury18]

I was thinking of the concept of not creating new instances of a wedge and then patch it up, making it look like the rectangular glass just broke, but instead actually cut up the glass so the rectangular glass actually ‘broke’

After quickly searching ‘cutting parts roblox’, I found this interesting post:

Slice a Block like a lightsaber

After I saw a game titled “Saber Simulator” on the top of the popular section, I thought it would have cool light saber mechanics, so I was excited. Then I played it of course, and it didn’t. What I want is to be able to slice a block, in many ways, on the client, smoothly, and without noticeable lag. I also only want it to work with parts as blocks because i feel it would be easier. I also realize I’m not the first to think of this. I’ve tried using SubtractAsync, but it quickly becomes a terr…

There’s a lot of solutions to that post, but the accepted answer was by @Syharaa:

@Syharaa

EgoMoose had a challenge on ScriptingHelpers that allowed people to find methods and ways to accomplish what he did in those gifs, https://scriptinghelpers.org/blog/snack-break-problem-28

Luckily for us he provided the solution/source code, so you can take a look at it and see how you can implement it with your Lightsaber code.

Unfortunately, @EgoMoose’s roblox place for the answer is closed…

I found many alternate solutions other than @EgoMoose’s, like @Hexlinee’s, in the thread. And @skwoginc’s answer. Although I haven’t looked into all of them yet, but it’s worth looking into.