export interface WorldSimState {
    position: [number, number, number];
    velocityY: number;
    yaw: number;
    pitch: number;
    logFocusDistance: number;
    grounded: boolean;
    heldRotation: [number, number, number];
    heldDistance: number;
    tick: number;
}
export type WorldAction = "move-forward" | "move-back" | "move-left" | "move-right" | "move-up" | "move-down" | "look-left" | "look-right" | "look-up" | "look-down" | "focus-far" | "focus-near" | "orbit-left" | "orbit-right" | "object-yaw-left" | "object-yaw-right" | "object-pitch-up" | "object-pitch-down" | "object-roll-left" | "object-roll-right" | "object-far" | "object-near";
export declare const FIXED_DT: number;
export declare const ARENA_HALF = 8;
export declare const PLAYER_RADIUS = 0.6;
export type WorldObstacle = readonly [x: number, y: number, z: number, size: number];
export declare function initialWorldState(): WorldSimState;
export declare function stepWorld(state: WorldSimState, active: ReadonlySet<WorldAction>, obstacles?: readonly WorldObstacle[]): WorldSimState;
export declare function hashWorldState(state: WorldSimState): string;
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