// Human-readable name of the battlefield
"name" : "",
// If set to true, obstacles will be taken from "specialBattlefields" property of an obstacle
// If set to false, obstacles will be taken from "allowedTerrains" instead
"isSpecial" : false,
// List of bonuses that will affect all battles on this battlefield
"bonuses" : { BONUS_FORMAT },
// Background image for this battlefield
"graphics" : "",
// Optional, filename for custom music to play during combat on this terrain
"music" : "",
// Optional, filename for custom sound to play during combat opening on this terrain
"openingSound" : "",
// List of battle hexes that will be always blocked on this battlefield (e.g. ship to ship battles)
"impassableHexes" : [ 10, 20, 50 ],