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* useAttackMovement Hook - Track Attack Movement for 3D Characters
*
* Custom hook for managing attack movement physics during animations.
* Tracks lunge and recovery phases with smooth easing curves.
*
* @korean 공격이동훅 - 공격 이동 추적
*/
import { useEffect, useRef, useState } from "react";
import * as THREE from "three";
import { AnimationType } from "@/systems/animation";
import { AttackMovementPhysics } from "@/systems/physics";
import { TrigramStance } from "@/types/common";
/**
* Configuration for useAttackMovement hook
*/
export interface UseAttackMovementConfig {
/** Whether character is currently attacking */
readonly isAttacking: boolean;
/** Animation type for current attack */
readonly animationType?: AnimationType;
/** Current trigram stance */
readonly currentStance: TrigramStance;
/** Base position of character (when not attacking) */
readonly basePosition: [number, number, number];
/** Direction vector for attack (normalized) */
readonly attackDirection?: THREE.Vector3;
/** Animation duration in seconds (default: 0.4) */
readonly animationDuration?: number;
}
/**
* Return value from useAttackMovement hook
*/
export interface UseAttackMovementResult {
/** Current 3D position including attack movement */
readonly currentPosition: [number, number, number];
/** Whether in forward lunge phase */
readonly isLunging: boolean;
/** Whether in recovery return phase */
readonly isRecovering: boolean;
/** Progress through attack movement (0-1) */
readonly progress: number;
}
/**
* useAttackMovement hook
*
* Tracks attack movement physics and returns current position.
* Automatically handles lunge and recovery phases with smooth easing.
*
* @param config - Attack movement configuration
* @returns Current position and movement state
*
* @example
* ```typescript
* const { currentPosition, isLunging } = useAttackMovement({
* isAttacking: playerIsAttacking,
* animationType: AnimationType.ROUNDHOUSE_KICK,
* currentStance: TrigramStance.LI,
* basePosition: [0, 0, 0],
* attackDirection: new THREE.Vector3(1, 0, 0),
* });
*
* // Use currentPosition for rendering
* <CharacterModel position={currentPosition} />
* ```
*
* @korean 공격이동사용
*/
export function useAttackMovement(
config: UseAttackMovementConfig
): UseAttackMovementResult {
const {
isAttacking,
animationType,
currentStance,
basePosition,
attackDirection,
animationDuration = 0.4,
} = config;
const physicsRef = useRef(new AttackMovementPhysics());
const attackStartTimeRef = useRef<number | null>(null);
const attackMovementResultRef = useRef<ReturnType<
typeof physicsRef.current.calculateAttackMovement
> | null>(null);
const [currentPosition, setCurrentPosition] = useState<
[number, number, number]
>(basePosition);
const [isLunging, setIsLunging] = useState(false);
const [isRecovering, setIsRecovering] = useState(false);
const [progress, setProgress] = useState(0);
const wasAttackingRef = useRef(false);
useEffect(() => {
if (!isAttacking) {
setCurrentPosition(basePosition);
}
}, [isAttacking, basePosition]);
useEffect(() => {
if (isAttacking && !wasAttackingRef.current) {
attackStartTimeRef.current = performance.now() / 1000;
if (animationType && attackDirection) {
attackMovementResultRef.current =
physicsRef.current.calculateAttackMovement({
animationType,
currentStance,
direction: attackDirection.clone().normalize(),
animationDuration,
});
}
} else if (!isAttacking && wasAttackingRef.current) {
attackStartTimeRef.current = null;
attackMovementResultRef.current = null;
setIsLunging(false);
setIsRecovering(false);
setProgress(0);
}
wasAttackingRef.current = isAttacking;
if (!isAttacking || !attackStartTimeRef.current || !attackMovementResultRef.current) {
return;
}
const result = attackMovementResultRef.current;
let animationFrameId: number;
const updatePosition = () => {
if (attackStartTimeRef.current === null) return;
const currentTime = performance.now() / 1000;
const elapsedTime = currentTime - attackStartTimeRef.current;
const lunging = physicsRef.current.isInLungePhase(
elapsedTime,
result.lungeDuration
);
const recovering = physicsRef.current.isInRecoveryPhase(
elapsedTime,
result
);
setIsLunging(lunging);
setIsRecovering(recovering);
const totalProgress = Math.min(1.0, elapsedTime / result.totalDuration);
setProgress(totalProgress);
if (lunging || recovering) {
const basePos = new THREE.Vector3(...basePosition);
const newPosition = physicsRef.current.applyAttackMovement(
basePos,
result,
elapsedTime,
recovering
);
setCurrentPosition([newPosition.x, newPosition.y, newPosition.z]);
animationFrameId = requestAnimationFrame(updatePosition);
} else {
setCurrentPosition(basePosition);
setIsLunging(false);
setIsRecovering(false);
setProgress(1.0);
}
};
animationFrameId = requestAnimationFrame(updatePosition);
return () => {
Eif (animationFrameId) {
cancelAnimationFrame(animationFrameId);
}
};
}, [
isAttacking,
animationType,
currentStance,
attackDirection,
animationDuration,
basePosition,
]);
return {
currentPosition,
isLunging,
isRecovering,
progress,
};
}
export default useAttackMovement;
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