SOURCE

const Player = function() {
    let currentState = {},
        states = {
            run: function() {
                console.log('run')
            },
            jump: function() {
                console.log('jump')
            },
            shoot: function() {
                console.log('shoot')
            },
        }

    const Actions = {
        changeState: function() {
            let args = [...arguments]
            currentState = {}
            if(args.length) {
                args.forEach(v => {
                    currentState[v] = true
                })
            }
            return this
        },
        dos: function() {
            if(Object.keys(currentState).length === 0) return
            for(let i in currentState) {
                states[i] && states[i]()
            }
        }
    }
    return {
        change: Actions.changeState,
        dos: Actions.dos
    }
}()

console.log(Player)

Player.change('jump','run').dos()