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* GestureRecognizer Component
*
* Visual overlay for gesture detection feedback
* Displays swipe trails and multi-touch indicators
*
* @module components/mobile/GestureRecognizer
* @category Mobile Controls
* @korean 제스처 인식기
*/
import { Html } from '@react-three/drei';
import React, { useCallback, useEffect, useState } from 'react';
import { KOREAN_COLORS } from '../../types/constants';
import { GestureEvent, useTouchControls } from '../../hooks/useTouchControls';
import { getColorRGB } from '../../utils/colorHelpers';
/**
* Props for GestureRecognizer component
*/
export interface GestureRecognizerProps {
/** Callback when gesture is detected */
readonly onGesture: (gesture: GestureEvent) => void;
/** Whether gesture recognition is enabled */
readonly enabled?: boolean;
/** Whether to show visual feedback */
readonly showFeedback?: boolean;
/** Minimum swipe distance in pixels (default: 50) */
readonly minSwipeDistance?: number;
}
/**
* Visual feedback state for gestures
*/
interface GestureFeedback {
readonly id: number;
readonly type: string;
readonly timestamp: number;
readonly x: number;
readonly y: number;
readonly age?: number; // Cached age to avoid impure function calls during render
}
/**
* GestureRecognizer Component
*
* Provides gesture detection and visual feedback for mobile controls
* Features:
* - Swipe detection (4 directions)
* - Two-finger tap detection
* - Visual trail feedback
* - Gesture type indicators
* - Auto-fading feedback
*
* Gesture Mappings:
* - Swipe Right: Advance toward opponent
* - Swipe Left: Retreat from opponent
* - Swipe Up: High attack mode
* - Swipe Down: Low attack mode
* - Two-Finger Tap: Vital point targeting mode
*
* @example
* ```tsx
* <GestureRecognizer
* onGesture={(gesture) => {
* console.log('Detected:', gesture.type);
* handleGesture(gesture);
* }}
* enabled={!isPaused}
* showFeedback={true}
* />
* ```
*
* @public
* @korean 제스처인식기
*/
export const GestureRecognizer: React.FC<GestureRecognizerProps> = ({
onGesture,
enabled = true,
showFeedback = true,
minSwipeDistance = 50,
}) => {
const [feedbacks, setFeedbacks] = useState<GestureFeedback[]>([]);
const [nextId, setNextId] = useState(0);
/**
* Handle detected gesture
*/
const handleGesture = useCallback(
(gesture: GestureEvent) => {
// Pass gesture to parent
onGesture(gesture);
// Add visual feedback
if (showFeedback && gesture.endX !== undefined && gesture.endY !== undefined) {
const feedback: GestureFeedback = {
id: nextId,
type: gesture.type,
timestamp: Date.now(),
x: gesture.endX,
y: gesture.endY,
};
setFeedbacks((prev) => [...prev, feedback]);
setNextId((prev) => prev + 1);
}
},
[onGesture, showFeedback, nextId]
);
/**
* Use touch controls hook for gesture detection
*/
useTouchControls({
onGesture: handleGesture,
enabled,
minSwipeDistance,
});
/**
* Clean up old feedback indicators and update ages
*/
useEffect(() => {
Iif (!showFeedback) return;
const interval = setInterval(() => {
const now = Date.now();
setFeedbacks((prev) =>
prev
.filter((fb) => now - fb.timestamp < 1000)
.map((fb) => ({ ...fb, age: now - fb.timestamp }))
);
}, 100);
return () => clearInterval(interval);
}, [showFeedback]);
Iif (!showFeedback) {
return null;
}
// Get RGB colors using shared utility
const primaryColor = getColorRGB(KOREAN_COLORS.PRIMARY_CYAN);
const goldColor = getColorRGB(KOREAN_COLORS.ACCENT_GOLD);
/**
* Get display info for gesture type
*/
const getGestureDisplay = (type: string): { korean: string; english: string; icon: string } => {
const displays: Record<string, { korean: string; english: string; icon: string }> = {
'swipe-right': { korean: '전진', english: 'Advance', icon: '→' },
'swipe-left': { korean: '후퇴', english: 'Retreat', icon: '←' },
'swipe-up': { korean: '상단', english: 'High', icon: '↑' },
'swipe-down': { korean: '하단', english: 'Low', icon: '↓' },
'two-finger-tap': { korean: '급소', english: 'Vital Point', icon: '🎯' },
tap: { korean: '터치', english: 'Tap', icon: '👆' },
};
return displays[type] ?? { korean: '제스처', english: 'Gesture', icon: '✋' };
};
return (
<Html fullscreen>
<div
style={{
position: 'fixed',
top: 0,
left: 0,
width: '100%',
height: '100%',
pointerEvents: 'none',
zIndex: 1000,
}}
data-testid="gesture-recognizer"
>
{/* Gesture feedback indicators */}
{feedbacks.map((feedback) => {
const age = feedback.age ?? 0;
const opacity = Math.max(0, 1 - age / 1000);
const scale = 1 + age / 500;
const display = getGestureDisplay(feedback.type);
return (
<div
key={feedback.id}
style={{
position: 'absolute',
left: `${feedback.x}px`,
top: `${feedback.y}px`,
transform: `translate(-50%, -50%) scale(${scale})`,
opacity,
transition: 'all 0.1s ease-out',
display: 'flex',
flexDirection: 'column',
alignItems: 'center',
gap: '4px',
}}
data-testid={`gesture-feedback-${feedback.id}`}
>
{/* Icon */}
<div
style={{
fontSize: '32px',
color: `rgba(${goldColor.r}, ${goldColor.g}, ${goldColor.b}, ${opacity})`,
textShadow: `0 0 10px rgba(${goldColor.r}, ${goldColor.g}, ${goldColor.b}, ${opacity * 0.8})`,
}}
>
{display.icon}
</div>
{/* Label */}
<div
style={{
background: `rgba(0, 0, 0, ${opacity * 0.8})`,
border: `2px solid rgba(${primaryColor.r}, ${primaryColor.g}, ${primaryColor.b}, ${opacity})`,
borderRadius: '8px',
padding: '4px 8px',
fontSize: '12px',
fontWeight: 'bold',
color: `rgba(${primaryColor.r}, ${primaryColor.g}, ${primaryColor.b}, ${opacity})`,
textAlign: 'center',
whiteSpace: 'nowrap',
textShadow: '0 1px 3px rgba(0, 0, 0, 0.8)',
}}
>
{display.korean} | {display.english}
</div>
</div>
);
})}
{/* Gesture instructions overlay (optional) */}
{enabled && (
<div
style={{
position: 'absolute',
top: '10px',
right: '10px',
background: 'rgba(0, 0, 0, 0.7)',
border: `2px solid rgba(${primaryColor.r}, ${primaryColor.g}, ${primaryColor.b}, 0.6)`,
borderRadius: '8px',
padding: '8px 12px',
fontSize: '10px',
color: `rgba(${primaryColor.r}, ${primaryColor.g}, ${primaryColor.b}, 0.9)`,
maxWidth: '150px',
opacity: 0.7,
}}
data-testid="gesture-instructions"
>
<div style={{ fontWeight: 'bold', marginBottom: '4px' }}>제스처 | Gestures</div>
<div>← → 이동 | Move</div>
<div>↑ ↓ 공격 | Attack</div>
<div>🤞 급소 | Vital</div>
</div>
)}
</div>
</Html>
);
};
|