Bullet going in wrong direction?

[hasoco (kan ye)]

Hello,

I am trying to make an automatic gun that an NPC shoots, it seems to work but the raycast is going in the wrong direction.

Here’s the script:

local shootPart = script.Parent

while wait(math.random(4,8)) do
	local raycastParams = RaycastParams.new()
	raycastParams.FilterType = Enum.RaycastFilterType.Blacklist
	raycastParams.IgnoreWater = true
	local rayCastResults = workspace:Raycast(shootPart.Position,shootPart.Position + Vector3.new(0,0,100))
	local newPart = Instance.new("Part",workspace)
	newPart.Size = shootPart.Size
	local TS = game:GetService("TweenService")
	local TI = TweenInfo.new(1)
	local goals = {["Position"] = (rayCastResults.Position)}
	local track = TS:Create(newPart,TI,goals)
	track:Play()
	newPart.Anchored = true
	newPart.Material = Enum.Material.Neon
	newPart.BrickColor = BrickColor.Yellow()
	game:GetService("Debris"):AddItem(newPart,5)
	newPart.Touched:Connect(function(hit)
		local humanoid = hit.Parent:WaitForChild("Humanoid")
		if humanoid then
			local plr = game.Players:GetPlayerFromCharacter(hit.Parent)
			if plr then
				humanoid:TakeDamage(10)
			end
		end
	end)
end

Here’s a video of it:

Thank you for reading this.

[Katrist]

The second parameter for raycast is the direction. You can use the LookVector instead of the position + a vector3 value. Make sure the LookVector for the shootPart is the right way though.

Fixed code:

--//Services
local Players = game:GetService("Players")
local TS = game:GetService("TweenService")

--//Variables
local shootPart = script.Parent
local raycastParams = RaycastParams.new()
raycastParams.FilterType = Enum.RaycastFilterType.Blacklist
raycastParams.IgnoreWater = true

--//Controls
local tweenInfo = TweenInfo.new(1)

--//Loops
while task.wait(Random.new():NextInteger(4, 8)) do
	local rayCastResults = workspace:Raycast(shootPart.Position, shootPart.CFrame.LookVector * 100)
	
	local newPart = Instance.new("Part")
	newPart.Size = shootPart.Size
	newPart.Anchored = true
	newPart.Material = Enum.Material.Neon
	newPart.BrickColor = BrickColor.Yellow()
	newPart.Parent = workspace
			
	local track = TS:Create(newPart, tweenInfo, {
		Position = rayCastResults.Position
	})
	
	track:Play()
	
	task.delay(5, newPart.Destroy, newPart)
	
	newPart.Touched:Connect(function(hit)
		local player = Players:GetPlayerFromCharacter(hit.Parent)
		local character = player and player.Character
		local humanoid = character and character:FindFirstChildWhichIsA("Humanoid")
		
		if humanoid then
			humanoid:TakeDamage(10)
		end
	end)
end

[hasoco (kan ye)]

It errors at line 26: Workspace.ShootPart.Shoot:26: attempt to index nil with 'Position’

[Katrist]

Sorry, I made an error.

Try this:

--//Services
local Players = game:GetService("Players")

--//Variables
local shootPart = script.Parent

--//Loops
while task.wait(Random.new():NextInteger(4, 8)) do
	local rayCastResults = workspace:Raycast(shootPart.Position, shootPart.CFrame.LookVector * 100)
	
	local newPart = Instance.new("Part")
	newPart.Size = shootPart.Size
	newPart.Anchored = false
	newPart.Material = Enum.Material.Neon
	newPart.BrickColor = BrickColor.Yellow()
	newPart.Parent = workspace
	
	newPart:ApplyImpulse(shootPart.CFrame.LookVector * 1000)
	
	task.delay(5, newPart.Destroy, newPart)
	
	newPart.Touched:Connect(function(hit)
		local player = Players:GetPlayerFromCharacter(hit.Parent)
		local character = player and player.Character
		local humanoid = character and character:FindFirstChildWhichIsA("Humanoid")
		
		if humanoid then
			humanoid:TakeDamage(10)
		end
	end)
end

[hasoco (kan ye)]

The bullet doesn’t appear

ingore this limit bypass

[Katrist]

@hasoco

The bullet doesn’t appear

Could be because I made the bullet speed too fast.

Try this:

--//Services
local Players = game:GetService("Players")

--//Variables
local shootPart = script.Parent

--//Loops
while task.wait(Random.new():NextInteger(4, 8)) do	
	local newPart = Instance.new("Part")
	newPart.Size = shootPart.Size
	newPart.Position = shootPart.Position + shootPart.CFrame.LookVector * 5
	newPart.Anchored = false
	newPart.Material = Enum.Material.Neon
	newPart.BrickColor = BrickColor.Yellow()
	newPart.Parent = workspace
	
	newPart:ApplyImpulse(shootPart.CFrame.LookVector * 1000)
	
	task.delay(5, newPart.Destroy, newPart)
	
	newPart.Touched:Connect(function(hit)
		local player = Players:GetPlayerFromCharacter(hit.Parent)
		local character = player and player.Character
		local humanoid = character and character:FindFirstChildWhichIsA("Humanoid")
		
		if humanoid then
			humanoid:TakeDamage(10)
		end
	end)
end

[hasoco (kan ye)]

Still doesn’t appear, maybe you made :ApplyImpulse too fast.

[Katrist]

Are you sure you made the shootpart appear the right way? Also, if you could send me the model in a .rbxm so I can test it by myself and then send it back, it would be appreciated.

[hasoco (kan ye)]

How do I make the model a .rbxm file?

[Katrist]

Right click the model, and press save to file.

[hasoco (kan ye)]

Ok, here’s the model
dummytower.rbxm (45.6 KB)

[hasoco (kan ye)]

Nevermind, I just slowed it down a bit by lowering the lookVector value.

[Katrist]

Fixed file:
dummytower.rbxm (45.8 KB)

This one uses TweenService to visualize the bullet and a raycast to damage the player.
The other one uses ApplyImpulse to visualize the bullet and .Touched to damage the player.

It’s your choice which one you choose.

[hasoco (kan ye)]

Alright, thank you so much.

limit

[Katrist]

No problem. If you have any more questions, feel free to ask.