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* useRoundTransition Hook - Manages round transition state and timing
*
* Korean: 라운드 전환 훅 (Round Transition Hook)
*
* Handles the state machine for round transitions:
* - idle: Normal combat state
* - announcing: Showing round announcement
* - countdown: Counting down to next round
* - transitioning: Brief transition to next round
*
* @module hooks/useRoundTransition
* @category Combat Hooks
*/
import { useCallback, useEffect, useMemo, useRef, useState } from "react";
import { PlayerState } from "../systems";
/**
* Round transition states
*
* Korean: 라운드 전환 상태
*/
export type RoundTransitionState =
| "idle"
| "announcing"
| "countdown"
| "transitioning";
/**
* Round transition configuration
*/
export interface RoundTransitionConfig {
/** Duration of announcement display in seconds */
readonly announcementDuration?: number;
/** Duration of countdown in seconds */
readonly countdownDuration?: number;
/** Duration of transition phase in milliseconds */
readonly transitionDuration?: number;
}
/**
* Round transition hook state
*/
export interface UseRoundTransitionResult {
/** Current transition state */
readonly transitionState: RoundTransitionState;
/** Whether announcement should be visible */
readonly showAnnouncement: boolean;
/** Start round transition sequence */
readonly startTransition: (
winner: PlayerState | null,
roundNumber: number
) => void;
/** Skip countdown and proceed immediately */
readonly skipCountdown: () => void;
/** Reset transition state to idle */
readonly resetTransition: () => void;
/** Round winner for current transition */
readonly roundWinner: PlayerState | null;
/** Round number for current transition */
readonly currentRoundNumber: number;
}
/**
* Default configuration values
*/
const DEFAULT_CONFIG: Required<RoundTransitionConfig> = {
announcementDuration: 2,
countdownDuration: 3,
transitionDuration: 500,
};
/**
* useRoundTransition Hook
*
* Manages the complete round transition flow:
* 1. Idle state during normal combat
* 2. Announcing state shows round results
* 3. Countdown state counts down to next round
* 4. Transitioning state briefly transitions to next round
* 5. Returns to idle for next round
*
* @param config - Configuration for transition timings
* @param onTransitionComplete - Callback when transition completes
* @returns Round transition state and control functions
*
* @example
* ```typescript
* const {
* transitionState,
* showAnnouncement,
* startTransition,
* skipCountdown,
* } = useRoundTransition(
* { countdownDuration: 3 },
* () => {
* // Start next round
* initializeNextRound();
* }
* );
*
* // When round ends
* startTransition(winner, roundNumber);
* ```
*/
export function useRoundTransition(
config: RoundTransitionConfig = {},
onTransitionComplete?: () => void
): UseRoundTransitionResult {
const mergedConfig = useMemo(
() => ({ ...DEFAULT_CONFIG, ...config }),
[config]
);
const [transitionState, setTransitionState] =
useState<RoundTransitionState>("idle");
const [roundWinner, setRoundWinner] = useState<PlayerState | null>(null);
const [currentRoundNumber, setCurrentRoundNumber] = useState(0);
// Use ref to track if we should continue countdown
const countdownActive = useRef(false);
const countdownTimer = useRef<NodeJS.Timeout | null>(null);
const transitionTimer = useRef<NodeJS.Timeout | null>(null);
/**
* Clear all active timers
*/
const clearTimers = useCallback(() => {
if (countdownTimer.current) {
clearInterval(countdownTimer.current);
countdownTimer.current = null;
}
if (transitionTimer.current) {
clearTimeout(transitionTimer.current);
transitionTimer.current = null;
}
}, []);
/**
* Start the transition sequence
*/
const startTransition = useCallback(
(winner: PlayerState | null, roundNumber: number) => {
clearTimers();
setRoundWinner(winner);
setCurrentRoundNumber(roundNumber);
setTransitionState("announcing");
// Move to countdown after announcement
const announcementTimer = setTimeout(() => {
setTransitionState("countdown");
countdownActive.current = true;
// Countdown will be managed by the RoundAnnouncement component
// After countdownDuration, move to transitioning state
countdownTimer.current = setTimeout(() => {
countdownActive.current = false;
setTransitionState("transitioning");
// Complete transition after brief delay
transitionTimer.current = setTimeout(() => {
setTransitionState("idle");
onTransitionComplete?.();
}, mergedConfig.transitionDuration);
}, mergedConfig.countdownDuration * 1000);
}, mergedConfig.announcementDuration * 1000);
// Store timer ref for cleanup
transitionTimer.current = announcementTimer;
},
[clearTimers, mergedConfig, onTransitionComplete]
);
/**
* Skip countdown and proceed immediately to next round
*/
const skipCountdown = useCallback(() => {
Eif (transitionState === "announcing" || transitionState === "countdown") {
clearTimers();
countdownActive.current = false;
setTransitionState("transitioning");
// Complete transition after brief delay
transitionTimer.current = setTimeout(() => {
setTransitionState("idle");
onTransitionComplete?.();
}, mergedConfig.transitionDuration);
}
}, [
transitionState,
clearTimers,
mergedConfig.transitionDuration,
onTransitionComplete,
]);
/**
* Reset transition to idle state
*/
const resetTransition = useCallback(() => {
clearTimers();
countdownActive.current = false;
setTransitionState("idle");
setRoundWinner(null);
setCurrentRoundNumber(0);
}, [clearTimers]);
/**
* Cleanup on unmount
*/
useEffect(() => {
return () => {
clearTimers();
countdownActive.current = false;
};
}, [clearTimers]);
return {
transitionState,
showAnnouncement:
transitionState === "announcing" || transitionState === "countdown",
startTransition,
skipCountdown,
resetTransition,
roundWinner,
currentRoundNumber,
};
}
export default useRoundTransition;
|