How can I fix this racyast?

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1

I’m trying to make a racyast for the bullets that come from a gun. The issue is that the raycast only works and damages humanoids if the bullet is inside a character model. There are no errors, what am I doing wrong?

	local raycastOrigin = bullet.Position
	local raycastDirection = bullet.CFrame.LookVector * 5
	
	local rayParams = RaycastParams.new()
	rayParams.FilterType = Enum.RaycastFilterType.Exclude
	rayParams.FilterDescendantsInstances = {bullet, tool.Parent}
	
	local raycastResult = workspace:Raycast(raycastOrigin, raycastDirection, rayParams)

	while task.wait() do
		if raycastResult ~= nil then
			if raycastResult.Instance then
				if raycastResult.Instance.Parent:FindFirstChildOfClass("Humanoid") then
					local char = raycastResult.Instance.Parent
					local humanoid = char:FindFirstChildOfClass("Humanoid")
					
					print(raycastResult.Instance)
					
					if raycastResult.Instance.Name == "Head" then
						humanoid:TakeDamage(headShotDamage)
					elseif raycastResult.Instance.Name == "Torso" or raycastResult.Instance.Name == char.PrimaryPart then
						humanoid:TakeDamage(bodyShotDamage)
					else
						humanoid:TakeDamage(limbShotDamage)
					end

					break
				end
			end
		end
	end
	
	raycastResult = nil
2

I think I know what’s up, but here’s what I’d like to know first:

  • What class is ‘bullet’ (part, attachment, …)
  • Why is there a while loop?
  • How is it supposed to work?
  • Screenshot of your hierarchy (explorer)
  • Maybe a video of what happens would help
3

part

don’t you use that to check if the raycast result exists and if it finds an instance?

raycast find character part if humanoid damage

4

You need to increase the direction magnitude and also get rid of your loop.

Code:

local raycastOrigin = bullet.Position
local raycastDirection = bullet.CFrame.LookVector * 50

local rayParams = RaycastParams.new()
rayParams.FilterType = Enum.RaycastFilterType.Exclude
rayParams.FilterDescendantsInstances = {bullet, tool.Parent}

local raycastResult = workspace:Raycast(raycastOrigin, raycastDirection, rayParams)

if raycastResult then
	if raycastResult.Instance.Parent:FindFirstChildOfClass("Humanoid") then
		local char = raycastResult.Instance.Parent
		local humanoid = char:FindFirstChildOfClass("Humanoid")

		print(raycastResult.Instance)

		if raycastResult.Instance.Name == "Head" then
			humanoid:TakeDamage(headShotDamage)
		elseif raycastResult.Instance.Name == "Torso" or raycastResult.Instance.Name == char.PrimaryPart then
			humanoid:TakeDamage(bodyShotDamage)
		else
			humanoid:TakeDamage(limbShotDamage)
		end
	end
end

raycastResult = nil
5

Is there a way for me to visualize the raycast? For one, I still need to have the gun inside the character model, and for two even when multiplying the look vector by something like 50,000 it still doesn’t register to hit the character model at all, even when not only the raycast intercepts a part of the character model but also while the bullet is touching it.

I think doing so would help me ten fold in finding the issue.

6

What does the print output say when you are shooting?

7

bump

8

It prints the body part hit, but the thing is this only applies to when the gun is inside of the body part, which is why I need to know how I can visualize the raycast to see what I am doing wrong.

9

sorry for lateness

local function visualizeRay(Start: Vector3, End: Vector3)
    local Part = Instance.new("Part")

    local MidPoint = (Start + End) / 2
    local Length = (Start - End).Magnitude
    
    Part.Anchored = true

    Part.CanCollide = false
    Part.CanTouch = false
    Part.CanQuery = false

    Part.Size = Vector3.new(0.1, 0.1, Length)
    Part.CFrame = CFrame.new(MidPoint, End)
    
    Part.Parent = workspace // so you can see it

    return Part
end
// you can change the part however you like
// ex
// local part = visualizeRay({start}, {end})
// part.Color = Color3.new(1, 0, 0) (red)

This should work, I didn’t test it though