/** DisplayTooltip, public static void method
* @param : IDisplayable
* Attribute the Displayable description to the tooltip on the screen.
* Then we enable the tooltip image and text next to the mouse.
**/
public static void DisplayTooltip(IDisplayable displayable)
{
string description = displayable.GetDescriptionGUI();
_tooltip.GetComponent <Image>().enabled = true;
_tooltip.GetComponentInChildren <Text>().text = description;
_tooltip.transform.position = Input.mousePosition;
}
