Raycast not getting any results

[dthecoolest]

Oh now you mention shotgun spray? Shouldn’t you have mentioned that in post 1?

So you are doing a raycast shotgun spray from a parts position towards the origin at (0,0,0)?

Then the problem is that the random vector offsetting method is problematic the further away the target position is which seems to be origin if you do -StartPosition. This is further explained below:

Shotgun spread problem

[image] Here is a rough sketch of why that occurs. Notice how the angle offset from the shot going towards your mouse gets smaller with greater distance. This is what causes it to shoot more accurately at a distance (as Vector3.new(R1, R2, R3) does not change with distance). You could use what @Locard suggested (within the similar post linked), however, this suffers from one minor problem (if what you want is even spread), Disk Point Picking -- from Wolfram MathWorld. You’ll end up with the…

Here is another method if you want to keep the vector offset method but standardize the distance problem:

How to make vector based recoil that isn't affected by mouse hit position distance?

@Quasiduck has explained this problem here through the diagram drawn in that post which is the method you are using with adding a vector, although the solution is for a different problem. To solve the problem, keeping your method you will need to standardized the distance represented by the green vector in the above diagram. Assuming you have a ray origin or shoot part. local direction = (mouse.Hit.p - ShootPart.CFrame.p).Unit local modifiedMousePosition = ShootPart.CFrame.p+direction *100 -…

I believe I’ve had enough for today hope this helps.

[goofylamb83 (awsomeaw)]

@goofylamb83

Think of a shotgun.

ok

@dthecoolest

So you are doing a raycast shotgun spray from a parts position towards the origin at (0,0,0)?

No, I intend to have the spray aimed at where the player wants soon. This is just one part of a whole thing I’m making.

Also, I don’t quite understand. What does this have to do with my problem?

[goofylamb83 (awsomeaw)]

local part = script.Parent.red

local Params = RaycastParams.new()
Params.FilterType = Enum.RaycastFilterType.Whitelist
Params.IgnoreWater = true
Params.FilterDescendantsInstances = {workspace}

local PhysicsService = game:GetService("PhysicsService")
PhysicsService:CreateCollisionGroup("NonCollide")
PhysicsService:CollisionGroupSetCollidable("NonCollide","Default",false)

local function createTracer(startpos)
	local RayDirection = -startpos + Vector3.new(math.random(-30, 30), math.random(-30,30), math.random(-30, 30))
	local result = workspace:Raycast(startpos, RayDirection,Params)

	if result then
		local endpos = result.Position
		local distance =  (startpos - endpos).Magnitude

		local tracer = Instance.new("Part")
		tracer.Color = Color3.fromRGB(163, 162, 165)
		PhysicsService:SetPartCollisionGroup(tracer,"NonCollide")
		tracer.Material = Enum.Material.Neon
		tracer.CanQuery = false -- prevent raycasting hitting this
		tracer.Anchored = true
		tracer.CanCollide = false
		tracer.Size = Vector3.new(0.5, 0.5, distance) 
		tracer.CFrame = CFrame.new(startpos , endpos) * CFrame.new(0, 0, -distance/2)
		tracer.Parent = workspace

		spawn(function()
			for i = 1, 100 do
				tracer.Transparency = tracer.Transparency + 0.01
				wait(0.01)
			end
			tracer:Destroy()
		end)
	end
end

for i = 1, 100 do
	createTracer(part.Position)
	wait(0.05)
end

These produced the results I wanted. Literally all I had to do there I think was change “local hit = result.Instance” to “local endpos = result.Position” The parts visualizing the rays now stop directly at the surface of the baseplate, which was what I wanted. Thank you everyone for helping.

[BJCarpenter]

That was one of my first projects: Shrapnel graphics and all. Close enough and you can blow the limbs off players, but won’t kill you, unless it blows off Head.

But Filtering broke it, and it’s just a bunch of fudge.

GL

Uber-Shotgun - Roblox