Need help with having tank turret point at mouse

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#1

I am making a tank, and i am stuck at the part where i have to make the turret point at the mouse. I tried using hinges, motor6d, and vector 3 and nothing works. help

#2

Could you group the turret barrels and the turret base into a group and then :SetPrimaryPartCFrame(CFrame.new(turret.Position, mouse.hit))

1 Like
#3

This problem can get pretty tricky once you also have to account for signed values based on what quadrant you are in World space, but a solution can be to solve the problem in object space

local function GetYawAndPitchRequired(Origin: CFrame, Target: Vector3): (number, number)
   local originToTarget = Target - Origin.Position
   local transformedVector = Origin:VectorToObjectSpace(originToTarget)
   
   local distanceXZ = math.sqrt(transformedVector.X * transformedVector.X + transformedVector.Z * transformedVector.Z)

   -- Something about Roblox handling it's axes of direction differently, so some of the signs have to be flipped
   -- atan2 returns a value that's already signed, so that's less work for us
   local yaw = math.atan2(-transformedVector.X, -transformedVector.Z)
   local pitch = math.atan2(transformedVector.Y, distanceXZ)

   return yaw, pitch
end

We’d use this function like so

local turretCFrame = ...
local target = ...

local yawRequired, pitchRequired = GetYawAndPitchRequired(turretCFrame, target)
-- assuming you're using a hinge or a motor object for rotation
turret.Yaw.TargetAngle = yawRequired
-- if not, then you would probably have to do something like create a new CFrame based off on this value, and then lerp to it to do non-instantaneous movement
#4

Uh ok so I used the code, but the servro dosnt turn heres my code:

		local mouse3D = game:GetService("ReplicatedStorage"):WaitForChild("mouse"..plr.Name).Value
		tankobj.mouselockconnection = Runservice.Heartbeat:Connect(function()
			local turretCFrame = model.gun.CFrame
			local yawRequired, pitchRequired = GetYawAndPitchRequired(turretCFrame, Vector3.new(mouse3D.X,mouse3D.Y,mouse3D.Z))
			model.Yaw.TargetAngle = yawRequired
		end)

the servo just dosnt move heres my code to update my mouse:

local mouse = game.Players.LocalPlayer:GetMouse()

game:GetService("RunService").RenderStepped:Connect(function()
	game.ReplicatedStorage:WaitForChild("mouse"..game.Players.LocalPlayer.Name).Value = mouse.Hit
end)

@WovenBreaker

#5

Assuming there isn’t any other un-noticed issues within your code, it’s probably something to do with the servo not having enough torque or any other property related to servo movement.

#6

I set my servo max torque to 900, and it still dosnt work. Heres my hinge/servo setup

image
image508×654 65.2 KB

the cyllinder is the gun, the square is the base
@WovenBreaker

#7

I would suggest you change Torque to something near infinity, and are you sure your model isn’t anchored or has the attachments set up properly?

#8

ok il set it to infinity Il come back when ready

It didnt work. Heres my file:
tank.rbxm.rbxl (47.6 KB)