flippable sheen

components/Card.tsx

@@ -5,6 +5,7 @@ import { useAppContext } from '@/app/AppContext';
 import TiltCard from '@/components/TiltCard';
 import ToolTip from '@/components/ToolTip';
 import StackTheDeck from '@/components/StackTheDeck';
+import Sheen from '@/components/Sheen';
 import getCardInfo from '@/tools/getCardInfo';
 import getURL from '@/tools/getURL';
 
@@ -84,6 +85,7 @@ export default function Card({ card, cardIndex }: CardProps) {
 								onHover={setTooltip}
 							/>
 						)}
+						<Sheen cardIndex={cardIndex} />
 					</div>
 					<div className="absolute inset-0 backface-hidden rotate-y-180">
 						<img
@@ -91,6 +93,7 @@ export default function Card({ card, cardIndex }: CardProps) {
 							alt={aria}
 							className="rounded-lg border border-yellow-500/25 hover:drop-shadow-[0_0_3px_#ffd700/50]"
 						/>
+						<Sheen cardIndex={cardIndex} />
 					</div>
 				</div>
 			</TiltCard>

components/Sheen.tsx

@@ -0,0 +1,88 @@
+import { useEffect, useRef, useState } from 'react';
+import { useAppContext } from '@/app/AppContext';
+
+const tiltSheen = (sheen: HTMLDivElement, tiltX: number, tiltY: number) => {
+	const rect = sheen.getBoundingClientRect();
+	const centerX = rect.width / 2;
+	const centerY = rect.height / 2;
+	const sheenX = centerX + (tiltY / -20) * centerX;
+	const sheenY = centerY + (tiltX / 20) * centerY;
+
+	sheen.style.opacity = '1';
+	sheen.style.backgroundImage = `
+			radial-gradient(
+				circle at
+				${sheenX}px ${sheenY}px,
+				#ffffff44,
+				#0000000f
+			)
+		`;
+};
+
+export default function Sheen({ cardIndex, className }: { cardIndex: number; className?: string }) {
+	const sheenRef = useRef<HTMLDivElement>(null);
+	const [untilt, setUntilt] = useState(false);
+	const {
+		gameData,
+		settings: { tilt, remoteTilt },
+		tilt: localTilts,
+	} = useAppContext();
+
+	useEffect(() => {
+		const sheen = sheenRef.current;
+		if (!sheen) return;
+
+		if (tilt) {
+			const rotateX = localTilts[cardIndex]?.rotateX || 0;
+			const rotateY = localTilts[cardIndex]?.rotateY || 0;
+
+			const tilts = remoteTilt
+				? [...gameData.tilts[cardIndex], { rotateX, rotateY }]
+				: [{ rotateX, rotateY }];
+
+			const { totalX, totalY, count } = tilts
+				.filter(({ rotateX, rotateY }) => !!rotateX && !!rotateY)
+				.reduce(
+					({ totalX, totalY, count }, { rotateX, rotateY }) => ({
+						totalX: totalX + rotateX,
+						totalY: totalY + rotateY,
+						count: ++count,
+					}),
+					{ totalX: 0, totalY: 0, count: 0 },
+				);
+
+			if (count && (totalX || totalY)) {
+				setUntilt(false);
+
+				const x = totalX / count;
+				const y = totalY / count;
+
+				tiltSheen(sheen, x, y);
+			} else {
+				setUntilt(true);
+			}
+		} else {
+			setUntilt(true);
+		}
+	}, [tilt, localTilts, gameData]);
+
+	useEffect(() => {
+		const sheen = sheenRef.current;
+		if (!sheen || !untilt) return;
+
+		sheen.style.opacity = '0';
+	}, [untilt]);
+
+	return (
+		<div
+			ref={sheenRef}
+			className={`
+				absolute inset-0
+				rounded-lg pointer-events-none
+				transition-opacity duration-500
+				bg-gradient-to-tr from-transparent via-white/20 to-transparent mix-blend-screen opacity-0
+				${className}
+			`}
+		/>
+	);
+}

components/TiltCard.tsx

@@ -7,24 +7,6 @@ import type { Tilt } from '@/types';
 
 const ZERO_ROTATION = 'rotateX(0deg) rotateY(0deg)';
 
-const tiltSheen = (sheen: HTMLDivElement, tiltX: number, tiltY: number) => {
-	const rect = sheen.getBoundingClientRect();
-	const centerX = rect.width / 2;
-	const centerY = rect.height / 2;
-	const sheenX = centerX + (tiltY / -20) * centerX;
-	const sheenY = centerY + (tiltX / 20) * centerY;
-
-	sheen.style.opacity = '1';
-	sheen.style.backgroundImage = `
-			radial-gradient(
-				circle at
-				${sheenX}px ${sheenY}px,
-				#ffffff44,
-				#0000000f
-			)
-		`;
-};
-
 export default function TiltCard({
 	children,
 	cardIndex,
@@ -35,7 +17,6 @@ export default function TiltCard({
 	className?: string;
 }) {
 	const cardRef = useRef<HTMLDivElement>(null);
-	const sheenRef = useRef<HTMLDivElement>(null);
 	const [untilt, setUntilt] = useState(false);
 	const {
 		gameData,
@@ -46,8 +27,7 @@ export default function TiltCard({
 
 	useEffect(() => {
 		const card = cardRef.current;
-		const sheen = sheenRef.current;
+		if (!card) return;
-		if (!card || !sheen) return;
 
 		if (tilt) {
 			const rotateX = localTilts[cardIndex]?.rotateX || 0;
@@ -75,7 +55,6 @@ export default function TiltCard({
 				const y = totalY / count;
 
 				card.style.transform = `rotateX(${x}deg) rotateY(${y}deg)`;
-				tiltSheen(sheen, x, y);
 			} else {
 				setUntilt(true);
 			}
@@ -86,11 +65,9 @@ export default function TiltCard({
 
 	useEffect(() => {
 		const card = cardRef.current;
-		const sheen = sheenRef.current;
+		if (!card || !untilt) return;
-		if (!card || !sheen || !untilt) return;
 
 		card.style.transform = ZERO_ROTATION;
-		sheen.style.opacity = '0';
 	}, [untilt]);
 
 	const handleMouseMove = throttle((e: React.MouseEvent) => {
@@ -128,10 +105,6 @@ export default function TiltCard({
 				className={`h-full w-full transition-transform ${untilt ? 'duration-500' : 'duration-0'}`}
 			>
 				{children}
-				<div
-					ref={sheenRef}
-					className="pointer-events-none absolute inset-0 rounded-lg bg-gradient-to-tr from-transparent via-white/20 to-transparent mix-blend-screen opacity-0 transition-opacity duration-500"
-				/>
 			</div>
 		</div>
 	);