postapocalyptic city: ravaging the grocery store

Above is a sketch of the top shelf of the grocery store, where all of the food that the players are trying to obtain is located. All of the food will have a light up "label" that will light up when the game has decided that the players need to try to touch that particular food item. A touch sensor is also on the food, so that when the user touches the food, it can sense that it has been touched and tell the light to turn off.