1. apireference
2. input
3. userinputservice

TouchTapInWorld

Parameters

Code Samples

Create a Part in World at Touch Position

This example uses the DataType/Vector2|Vector2 position passed by UserInputService/TouchTapInWorld|TouchTapInWorld to find the DataType/Vector3|Vector3 world position the user tapped. Then, the code spawns an anchored BasePart|Part at the world position.

In order to calculate the DataType/Vector3|Vector3 world position using the viewport position, this example generates a Ray called unitRay originating from position using the Camera/ViewportPointToRay|ViewportPointToRay function. Then, since ViewportPointToRay() creates a unit ray that is only 1 stud long, the example uses it to create a longer ray that is length studs long. Using Workspace/FindPartOnRay|FindPartOnRay, the code determines where the ray first intersects a part in the world - the Vector3 world position that the user tapped.

Note that the code sample will not spawn a part if the user touches on the screen over an empty skybox. The touch must be on a part for FindPartOnRay() to return a DataType/Vector3|Vector3 position.

local UserInputService = game:GetService("UserInputService")

local camera = game.Workspace.CurrentCamera
local length = 500

local function createPart(position, processedByUI)
	-- Do not create a part if the player clicked on a GUI/UI element
	if processedByUI then return end

	-- Get Vector3 world position from the Vector2 viewport position
	local unitRay = camera:ViewportPointToRay(position.X, position.Y)
	local ray = Ray.new(unitRay.Origin, unitRay.Direction * length)
	local hitPart, worldPosition = game.Workspace:FindPartOnRay(ray)
	
	-- Create a new part at the world position if the player clicked on a part
	-- Do not create a new part if player clicks on empty skybox
	if hitPart then
		local part = Instance.new("Part")
		part.Parent = game.Workspace
		part.Anchored = true
		part.Size = Vector3.new(1, 1, 1)
		part.Position = worldPosition
	end
end

UserInputService.TouchTapInWorld:Connect(createPart)