A simple and performant car crash script for bricky/low poly Roblox cars. Do note that this script was made for my game and is NOT READY OUT OF THE BOX not plugnplay. If you want more performant (and more realistic!) breaking, try finding a deformation model instead of... this thing. This script also functions for buildings and stuff, but there is likely more performant ways to do this.
Uh, yes, the code it's uhj. This is a break-on-collision per part script that spams .touched events, making it like a billion times betterer, but this is a visual choice. This script supports both shear (slding) and impact (head on) impact thresholds (in SPS) to determine when to :BreakJoints() of a part. It also works on buildings, and is MUCH more performant than a car crash/destruction script you'd find in toolbox, but it still is the same inefficient method, and, again, you should use different methods, like full hitboxes.
This script is NOT ready out of box not plug and play because this is for MY GAME intended for my personal usecases, but you can use it too :3. It is intended to be parented to cars (and other destruction items)
On line 26, update it with the path to PoolerPlus
Find PoolerPlus here on the DevForum page!
local Pooler = require("@game/ServerScriptService/Modules/PoolerPlus"):GetPool("DebrisParticlePool")Also, poolersetup.luau is an example of how to set up the particle pool, because you do need to set up the pool.
Then, make your collision groups, being:
Cars(Car itself)CarDebris(Mainly for faster lookup times)Wheels(So your car doesnt destroy itself.)
It is recommended CarDebris and Wheels is set to not collide with Cars, but this may vary if your cars are different.
After, there are some optional tags (CollectionService) you can add to do more, which are:
Destructible(Parts outside of a car that can be destroyed.)CrumpleZone(A weaker part of the car with it's own threshold multiplier, 0.75 by default)
This project is licensed under MIT. Please please please give me credit in your game.
MIT License
Copyright (c) 2026 Blueb-rry
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
THESE BENCHMARKS ARE NOT THE DIRECT PERFORMANCE OF THIS SCRIPT. THESE BENCHMARKS ARE USED TO FIGURE OUT THE FASTEST WAY TO RUN THE SCRIPT'S LOGIC. BOTH TESTED WITH INTEL I5 12TH GEN (Other applications open.)
1000 Samples of 1 million runs per sample. Magnitude Testing:
(Primatives): [vector.magnitude(vector.create(0, 0, 0))]
(Vectors): [Vector3.New(0, 0, 0).Magnitude]
(Squaring): [x*x, y*y, z*z]
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Primatives: 0.157149 seconds
Vectors: 0.181784 seconds
Squaring: 0.187247 seconds
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100 Samples of 1 hundred thousand runs per sample. Subtraction Testing:
(Manual): [vA.x - vB.x, vA.y - vB.y, vA.z - vB.z]
(Direct): [vA - vB]
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Vector3 Manual: 0.003959s
Vector3 Direct: 0.001978s
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Native Manual: 0.003956s
Native Direct: 0.001980s
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