Car crash problem

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#1

So theres a problem in my car crashing system. Sometimes when it crashes or flips, it would break every weld constraint in the car.

Code: (client)

local model = script.Parent
model.Parent:WaitForChild(model.Name)

local Parts = model:WaitForChild("Parts")

local pushbackForce = 1

local function checkIfPartIsWelded(part)
	if part then
		local weldConstraint = part:FindFirstChildWhichIsA("WeldConstraint")

		if weldConstraint then
			return true
		end
	end

	return false
end

local function onTouched(part, otherPart)
	script.DestroyWeld:FireServer(part)
	
	local positionDifference = (part.Position - otherPart.Position)
	local distanceMoved = positionDifference.Magnitude
	local pushBackFactor = (distanceMoved * pushbackForce)

	local pushBackDirection = positionDifference.Unit
	local surfaceNormal = otherPart.CFrame:VectorToObjectSpace(part.Position - otherPart.Position).Unit
	pushBackDirection = (pushBackDirection + surfaceNormal).Unit

	local pushBackDistance = -pushBackFactor
	part:ApplyImpulse(pushBackDirection * pushBackDistance)
end

local function checkCanBreak(part, hit)
	if hit:IsDescendantOf(model) then
		local partWeld = part:FindFirstChildWhichIsA("WeldConstraint")

		if partWeld and partWeld.Part1 == hit then
			return false

		elseif partWeld and partWeld.Part1 ~= hit then
			return true
		end
	else
		return true
	end

	return false
end

----------------------------------------------------------------------------------------------------------------------------------

local breakSpeed = 20

for i,v in ipairs(Parts:GetDescendants()) do
	if v:IsA("BasePart") then
		v.Touched:Connect(function(hit)
			local speed = (v.AssemblyLinearVelocity - hit.AssemblyLinearVelocity).Magnitude
			local Power = v:GetAttribute("Power")

			local canBreak = checkCanBreak(v, hit)

			if canBreak then
				local isWelded = checkIfPartIsWelded(v)

				if isWelded then
					if Power and speed >= Power then
						onTouched(v, hit)

					elseif not Power and speed >= breakSpeed then
						onTouched(v, hit)
					end
				end
			end
		end)
	end
end

Game link:

1 Like
#2

adjust the breakSpeed variable or the Power attribute of the parts to make them more resistant to breaking. try also adding additional checks in the onTouched function to prevent all weld constraints from breaking at once.