import type { Position, Rotation, Scale } from '$lib';
export interface World {
    worker: Worker & CannonWorker;
    step(): void;
    nextBodyId(): number;
}
export interface CannonWorker {
    postMessage(request: CannonWorkerRequest, options?: Transferable[] | StructuredSerializeOptions): void;
    addEventListener(type: 'message', listener: (event: MessageEvent<CannonWorkerResponse>) => void, options?: boolean | AddEventListenerOptions): void;
}
export declare type CannonWorkerRequest = {
    type: 'step';
    payload: StepPayload;
} | {
    type: 'update_world';
    payload: UpdateWorldPayload;
} | {
    type: 'create_body';
    payload: CreateBodyPayload;
} | {
    type: 'remove_body';
    payload: RemoveBodyPayload;
} | {
    type: 'create_shape';
    payload: CreateShapePayload;
} | {
    type: 'remove_shape';
};
export interface StepPayload {
    timestamp: number;
    args: [dt: number, timeSinceLastCalled?: number, maxSubSteps?: number];
    positions?: Float32Array;
    quaternions?: Float32Array;
}
export interface UpdateWorldPayload {
    gravity?: Position;
    broadphase?: Broadphase;
    defaultContactMaterial?: {
        friction?: number;
        restitution?: number;
    };
}
export declare type Broadphase = 'sap';
export interface CreateBodyPayload {
    id: number;
    options: CreateBodyOptions;
}
export interface CreateBodyOptions {
    type?: BodyType;
    mass?: number;
    position?: Position;
    rotation?: Rotation;
}
export declare type BodyType = 'static' | 'dynamic' | 'kinematic';
export interface RemoveBodyPayload {
    id: number;
}
export declare type ShapeType = 'plane' | 'box' | 'sphere';
export declare type CreateShapePayload = {
    id?: number;
    type: ShapeType;
    options: CreateShapeOptions;
};
export interface CreateShapeOptions {
    position?: Position;
    rotation?: Rotation;
    scale: Scale;
}
export declare type CannonWorkerResponse = {
    type: 'step';
    payload: StepResponse;
};
export interface StepResponse {
    timestamp: number;
    stepnumber: number;
    positions: Float32Array;
    quaternions: Float32Array;
}