Inventory Items and Gameplay Flags
==================================

# How do I manage inventory items and gameplay flags?

1. Use the [SetValue](@ref Fungus.GameController.SetValue) command to record a collected inventory item or gameplay flag.
2. Use the [GetValue](@ref Fungus.GameController.GetValue) command to check how many items of that type have been set.
3. Use the [HasValue](@ref Fungus.GameController.HasValue) command to check if any items of that type have been set.
4. Use the [ClearValue](@ref Fungus.GameController.HasValue) command to reset item count to 0.

## C# code example
~~~~~~~~~~~~~~~~~~~~
using UnityEngine;
using System.Collections;
using Fungus;

public class MyRoom : Room 
{
	void OnEnter() 
	{
		// Inventory example (counting usage)
		SetValue("rock", 2); // Pick up rocks
		if (GetValue("rock") > 0) // Check if player has rocks
		{
			Say("You have some rocks");
		}
		SetValue("rock", 0); // Drop rocks

		// Gameplay flag example (boolean flag usage)
		SetValue("door_open"); // Sets value to 1 (to indicate True)
		if (HasValue("door_open")) // Checks if value is non-zero (indicates True)
		{
			Say("The door is open");
		}
		ClearValue("door_open"); // Sets value to 0 (to indicate False)
	}
}
~~~~~~~~~~~~~~~~~~~~