Implement first prototype for game file parser

[Rookfighter]

• loading rooms from yaml files
• listening on events
  • use actions and constraints

[Rookfighter]

A file for a room might look like this:

description : A dark room with old furniture. Everyhing is covered with scratches. After the door closes behind you, the darkness is absolute. You can't see anything.
doors :
    WEST:
        nextRoom : bathroom
        locked   : false
    NORTH:
        nextRoom  : livingroom
        locked    : true
items: []
onEvent :
    - name : itemUsed
      conditions :
          - usedItem : burning candle
      actions :
          - createItem :
              itemName : couch
              place    : room
          - createItem :
              itemName : carpet
              place    : room
          - printText : You light the candle and the content of the room becomes visible. You can see an old couch and worn off carpet.
    - name : itemUsed
      conditions :
          - usedItem : key
      actions :
          - destroyItem : key
          - unlockDoor : NORTH
          - printText : You unlocked the door to the livingroom.

Actions and conditions are translated into corresponding engine functions and allow a highly flexible way for scripting events.

[Rookfighter]

same in json:

{
    "description" : "A dark room with old furniture. Everyhing is covered with scratches. After the door closes behind you, the darkness is absolute. You can't see anything.",
    "doors" :
    [
        {
            "direction" : "WEST",
            "nextRoom"  : "bathroom",
            "locked"    : false
        },
        {
            "direction" : "NORTH",
            "nextRoom"  : "livingroom",
            "locked"    : true
        }
    ],
    "items" : [],
    "onEvent" :
    [
        {
            "name" : "itemsCombined",
            "conditions" :
            [
                {"usedItem" : "candle"},
                {"usedItem" : "lighter"}
            ],
            "actions" :
            [
                {"destroyItem" : "candle"},
                {"destroyItem" : "lighter"},
                {
                    "createItem"  :
                    {
                        "itemName" : "burning candle",
                        "place"    : "inventory"
                    }
                },
                {
                    "createItem"  :
                    {
                        "itemName" : "couch",
                        "place"    : "room"
                    }
                },
                {
                    "createItem"  :
                    {
                        "itemName" : "carpet",
                        "place"    : "room"
                    }
                },
                {"printText" : "You light the candle and the content of the room becomes visible. You can see an old couch and worn off carpet."}
            ]
        },
        {
            "name" : "itemUsed",
            "conditions" :
            [
                {"usedItem" : "key"},
                {"usedDoor" : "NORTH"}
            ],
            "actions" :
            [
                {"destroyItem" : "key"},
                {"unlockDoor" : "NORTH"},
                {"printText" : "You unlocked the door to the livingroom."}
            ]
        }
    ]
}

[Rookfighter]

Item file:

items:
    key:
        takeable : true
        useable  : true
    couch:
        takeable : false
        useable  : false
    candle:
        takeable : true
        useable  : false
    lighter:
        takeable : true
        useable  : false
    burning candle:
        takeable : true
        useable  : true
combinations:
    - burning candle: [candle, lighter]