type Query {
  tile(x: Int!, y: Int!): Tile
  tiles(x1: Int!, y1: Int!, x2: Int!, y2: Int!): [Tile!]!
  classification(id: ID!): Classification
}

type Mutations {
  setTile(x: Int!, y: Int!, input: TileInput!): Tile!
}

type Tile {
  x: Int!
  y: Int!
  terrain: Terrain!
  infrastructure(infrastructure: Infrastructure!): Boolean!
  resources(resource: Resource!): Int!
  units(layer: Layer!): Unit
}

enum Terrain {
  LAND
  RIVER
  SHALLOW_WATER
  DEEP_WATER
}

enum Infrastructure {
  ROAD
  RAIL
}

enum Resource {
  CRUDE_OIL
  NATURAL_GAS
  IRON_ORE
}

enum Layer {
  SURFACE
  SKY
}

type Unit {
  owner: Player
  classification: Classification!
  watermark: Timestamp!
  contents: [Unit!]!
}

scalar Timestamp

type Player {
  name: String!
}

type Classification {
  name: String!
  category: Category!
  independent: Boolean!
  weight: Int!
  layer: Layer!
  operationRequirements: [Classification!]!
  # content limits
  moveAction: MoveAction
  # take
  # place
  # build
  # transform
}

enum Category {
  HUMAN
  SMALL_VEHICLE
  LARGE_VEHICLE
  FIGHTER_JET
  VOLATILE_LIQUID
  CARRIABLE
}

type MoveAction {
  fuel: Classification!
  baseCost: Int!
  profile: MovementProfile!
}

type MovementProfile {
  terrain: MovementProfileTerrain!
  infrastructure: MovementProfileTnfrastructure!
}