namespace CityBuilder

​

type MagicItemInfo = {

    minor : int

    medium : int

    major : int     

}

​

type Bonuses = {

    economy : int

    loyalty : int

    stability : int

    fame : int

    defense : int

    addedValue : int

}

​

type Upgrades = {

    upgradeTo : string option // can upgrade to this building

    upgradeFrom : string option // upgraded from this building

}

​

type CostImpacts = {

    impacts : string list // these buildings get half off

    impactedBy : string list // these building offer half off for this building 

}

​

type Terrain = Water | Land

​

type BuildingType = House // only known building constraint right now

​

type Constraint = // a constraint is either

    | Building of BuildingType * int  // a building constraint specifying a building type and a required quantity

    | Terrain of Terrain // or must have this terrain

​

type BuildDef = {

    name : string // unique across buildDefs

    size : int

    cost : int

    bonuses : Bonuses // required 

    items : MagicItemInfo option // optional magic item info

    upgrades : Upgrades option // not all buildings have upgrades

    impacts : CostImpacts option // not all buildings impact other buildings' costs

    constraints : Constraint list // not all buildings have building constraints

}

​