Inventory Problem

How to tell if the base tool is kept in that inventory box

Your question is very vague, could you explain more?

Maybe?:

for _, tool in pairs(game.Players.THE_PLAYER.Backpack:GetChildren()) do
	if tool.Name == "your tool name" then
		warn("player has the tool")
	end
end

How to detect if a tool is taken from our inventory to that box.

In this image for example the base tool is taken from the 1st tool in the inventory to the box

How to detect when a tool is Unequipped?
When a tool is Unequipped, that tool is taken from Character and placed in that “Box” called Backpack.
When player equips a tool, the tool is taken from Backpack and placed inside character.

You could listen when ChildAdded event fires from the Backpack

game.Backpack.ChildAdded:Connect(function(tool)
	warn(tool, "added")
end)

game.Backpack.ChildRemoved:Connect(function(tool)
	warn(tool, "removed")
end)

Or you could use the Tool.Equipped and Tool.Unequipped event, from a script inside the Tool:

Tool.Unequipped:Connect(function()
	warn("this tool were removed from character")
end)

Sorry For the misunderstanding


If we take the tool Hot dog into the Players Backpack(Which is already in Player’s Backpack)

The Displayed Tools down there(1,2,3,4,5,6,7,8,9,0) becomes empty

How to detect that a tool has been removed from the display of a Player

Ok. Sorry, I think Im starting to understand what you want.

I see the theme, food. And ingredients are Tools. You are removing the Tool/Ingredient when player used it. And you want to know when that Tool got removed from player cause it was used?

Sorry if Im not fully understanding, you need to be more descriptive, or someone could throw some light into what you are looking for.

I don’t think it’s possible yet, your best bet is to check the players backpack and the tool and check a value inside the tool that says the player has it equipped in their main slots.