import { type Vec3 } from '../math/vec3.js';
import { type PmFlags, WaterLevel } from './constants.js';
import type { PmoveCmd, PmovePointContentsFn, PmoveTraceFn } from './types.js';
export interface SpecialMovementParams {
    readonly pmFlags: PmFlags;
    readonly pmTime: number;
    readonly waterlevel: WaterLevel;
    readonly watertype: number;
    readonly gravity: number;
    readonly cmd: PmoveCmd;
    readonly forward: Vec3;
    readonly origin: Vec3;
    readonly velocity: Vec3;
    readonly mins: Vec3;
    readonly maxs: Vec3;
    readonly viewheight: number;
    readonly trace: PmoveTraceFn;
    readonly pointContents: PmovePointContentsFn;
    readonly onGround: boolean;
    readonly overbounce?: number;
    readonly stepSize?: number;
    readonly maxBumps?: number;
    readonly maxClipPlanes?: number;
}
export interface SpecialMovementResult {
    readonly pmFlags: PmFlags;
    readonly pmTime: number;
    readonly velocity: Vec3;
    readonly performedWaterJump: boolean;
}
/**
 * Mirrors the ladder detection and water-jump probing logic from
 * `PM_CheckSpecialMovement` in `rerelease/p_move.cpp`. The helper clears and
 * re-adds the ladder flag based on nearby CONTENTS_LADDER brushes, then
 * simulates a potential water jump by firing the same 40-unit probe and
 * step-slide loop the C++ uses before committing to the upward velocity.
 */
export declare function checkSpecialMovement(params: SpecialMovementParams): SpecialMovementResult;
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