class Item {
    def name  // name of the item
    def value // value of the item in game points
    
    def increaseValue(amount) {
        value += amount
    }
    
    def reduceValue(amount) {
        if (value >= amount) { // only if result won't be negative
            value -= amount
        }
    }
    
    def display() {
        println "Item: ${name} has value ${value}"
    }

}