Files
Tarokka/components/Sheen.tsx
Gavin McDonald fc0466ae89 flippable sheen
2025-07-03 16:38:53 -04:00

89 lines
2.1 KiB
TypeScript

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}
`}
/>
);
}