player: {
    hp: 50,
    inventory: [
        {
            id: "dagger",
            x: 0,
            y: 0,
            name: "Dolk",
            description: "Basis schade tegen monsters",
            useTimes: infinite,
            value: 10,

            actions: {}
        }
    ]
}

levels: [
    {
        layout: {
            | * * * * * * * *
            | * . . . . . . *
            | * s . . . . . *
            | * . . . . . e *
            | * . . . . . . *
            | * * * * * * * *
        },

        items: [
            {
                id: "sword",
                x: 3,
                y: 4,
                name: "Zwaard",
                description: "Meer schade tegen monsters",
                useTimes: infinite,
                value: 25,

                actions: {
                    [not(inventoryFull())] retrieveItem(sword),
                    [] leave()
                }
            },
            {
                id: "potion",
                x: 4,
                y: 2,
                name: "Levensbrouwsel",
                description: "Geeft een aantal levenspunten terug",
                useTimes: 1,
                value: 50,

                actions: {
                    [not(inventoryFull())] retrieveItem(potion),
                    [] leave()
                }
            }
        ],

        entities: [
            {
                id: "devil",
                x: 5,
                y: 4,
                name: "Duivel",
                description: "Een monster uit de hel",
                hp: 50,
                value: 5,

                actions: {
                    [inventoryContains(potion)] increasePlayerHp(potion),
                    [inventoryContains(sword)] decreaseHp(devil, sword),
                    [] decreaseHp(devil, dagger),
                    [] leave()
                }
            }
        ]
    }
]