Crosshair Offset bug in different screen sizes [Fe Gun Kit]

Help and Feedback Scripting Support
#1

Goal: Fix the FE Gun Kit issue where the crosshair dot moves when you change from fullscreen to windowed. This bug also occurs when you change FOV.

Issue: As stated, the crosshair is offset when aiming in ironsights when I change screen size (note: I am using the latest FE gun kit version with viewmodel)

Solutions attempted: I tried using chat-gpt with no avail.

Examples of the bug (one is fullscreen and one is in the smallest window you can make the roblox window. (If you are familiar with the Fe Gun kit, the white dot is basically where the bullet will hit in the crosshair. Its off center since it needs to be manually adjusted in the function I posted below with the x/y-axis. I do not know of a permanent solution where the viewmodel aimpoint aligns with this dot.)

fullscreen
fullscreen963×880 31.1 KB

windowed - smallest

Here is the update crosshair function found in the Gunclient script:

	local function UpdateCrosshair()
		if UserInputService.MouseEnabled and UserInputService.KeyboardEnabled then --For pc version
			if FakeCamera then
				CFAngles = CFrame.fromEulerAnglesXYZ(FakeCamera.Transform:ToEulerAnglesXYZ()) or CFrame.new()
				if (Camera.Focus.p - Camera.CoordinateFrame.p).Magnitude <= 1 then
					if CFAngles then
						local v = WorldToScreen((Camera.CFrame * CFAngles:Inverse() * CFrame.new(0, 0, -4)).Position)
						local v2 = Camera.ViewportSize / 2
						GUI.Crosshair.Position = (v - v2).Magnitude > 0.08 and UDim2.new(0, v.X, 0, v.Y - 36) or UDim2.new(0, v2.X, 0, v2.Y - 36)
					else
						GUI.Crosshair.Position = UDim2.new(0, Mouse.X, 0, Mouse.Y)
					end	
				else
					GUI.Crosshair.Position = UDim2.new(0, Mouse.X, 0, Mouse.Y)
				end
			else
				GUI.Crosshair.Position = UDim2.new(0, Mouse.X, 0, Mouse.Y)
			end   
		elseif UserInputService.TouchEnabled and not UserInputService.MouseEnabled and not UserInputService.KeyboardEnabled and (Camera.Focus.p - Camera.CoordinateFrame.p).Magnitude > 2 then --For mobile version, but in third-person view
			GUI.Crosshair.Position = UDim2.new(0.5, 0, 0.4, -50)
		elseif UserInputService.TouchEnabled and not UserInputService.MouseEnabled and not UserInputService.KeyboardEnabled and (Camera.Focus.p - Camera.CoordinateFrame.p).Magnitude <= 2 then --For mobile version, but in first-person view
			if FakeCamera then
				CFAngles = CFrame.fromEulerAnglesXYZ(FakeCamera.Transform:ToEulerAnglesXYZ()) or CFrame.new()
				if (Camera.Focus.p - Camera.CoordinateFrame.p).Magnitude <= 1 then
					if CFAngles then
						local v = WorldToScreen((Camera.CFrame * CFAngles:Inverse() * CFrame.new(0, 0, -4)).Position)
						local v2 = Camera.ViewportSize / 2
						GUI.Crosshair.Position = (v - v2).Magnitude > 0.08 and UDim2.new(0, v.X, 0, v.Y - 36) or UDim2.new(0, v2.X, 0, v2.Y - 36)
					else
						GUI.Crosshair.Position = UDim2.new(0.5, 0, 0.5, -19)
					end	
				else
					GUI.Crosshair.Position = UDim2.new(0.5, 0, 0.5, -19)
				end
			else
				GUI.Crosshair.Position = UDim2.new(0.5, 0, 0.5, -19)
			end
		end
	end

Thank you. I appreciate any help.

Also for future reference if anyone sees this thread, here is a bug fix I uploaded for when your arms disappear when you equip a second gun: ViewmodelHandler(Fixes FE Gun Kit) - Creator Store

1 Like
#2

that code is pretty bad, I’m guessing it’s somethjng to do with Camera.ViewportSize because that method is not required

#3

Yeah, it’s unfortunate that the biggest free gun kit the community has is riddled with so many bugs

1 Like
#4 
	local function UpdateCrosshair()
		if UserInputService.MouseEnabled and UserInputService.KeyboardEnabled then --For pc version
			if FakeCamera then
				CFAngles = CFrame.fromEulerAnglesXYZ(FakeCamera.Transform:ToEulerAnglesXYZ()) or CFrame.new()
				if (Camera.Focus.p - Camera.CoordinateFrame.p).Magnitude <= 1 then
					if CFAngles then
						local v = WorldToScreen((Camera.CFrame * CFAngles:Inverse() * CFrame.new(0, 0, -4)).Position)
						local v2 = Camera.ViewportSize / 2
						GUI.Crosshair.Position = (v - v2).Magnitude > 0.08 and UDim2.new(0, v.X, 0, v.Y) or UDim2.new(0, v2.X, 0, v2.Y)
					else
						GUI.Crosshair.Position = UDim2.new(0, Mouse.X, 0, Mouse.Y + 58)
					end	
				else
					GUI.Crosshair.Position = UDim2.new(0, Mouse.X, 0, Mouse.Y + 58)
				end
			else
				GUI.Crosshair.Position = UDim2.new(0, Mouse.X, 0, Mouse.Y + 58)
			end   
		elseif UserInputService.TouchEnabled and not UserInputService.MouseEnabled and not UserInputService.KeyboardEnabled and (Camera.Focus.p - Camera.CoordinateFrame.p).Magnitude > 2 then --For mobile version, but in third-person view
			GUI.Crosshair.Position = UDim2.new(0.5, 0, 0.4, -50)
		elseif UserInputService.TouchEnabled and not UserInputService.MouseEnabled and not UserInputService.KeyboardEnabled and (Camera.Focus.p - Camera.CoordinateFrame.p).Magnitude <= 2 then --For mobile version, but in first-person view
			if FakeCamera then
				CFAngles = CFrame.fromEulerAnglesXYZ(FakeCamera.Transform:ToEulerAnglesXYZ()) or CFrame.new()
				if (Camera.Focus.p - Camera.CoordinateFrame.p).Magnitude <= 1 then
					if CFAngles then
						local v = WorldToScreen((Camera.CFrame * CFAngles:Inverse() * CFrame.new(0, 0, -4)).Position)
						local v2 = Camera.ViewportSize / 2
						GUI.Crosshair.Position = (v - v2).Magnitude > 0.08 and UDim2.new(0, v.X, 0, v.Y) or UDim2.new(0, v2.X, 0, v2.Y)
					else
						GUI.Crosshair.Position = UDim2.new(0.5, 0, 0.5, -19)
					end	
				else
					GUI.Crosshair.Position = UDim2.new(0.5, 0, 0.5, -19)
				end
			else
				GUI.Crosshair.Position = UDim2.new(0.5, 0, 0.5, -19)
			end
		end
	end

Updated Crosshair Function is above!

For this to work, please enable gui inset in the gui settings found in the tool.

Other know bugs that need fixing: Aimpoint not aligning with crosshair dot in viewmodel.