Fix Nim game heap alignment and jumpiness; improve UX

This commit is contained in:
Neeldhara Misra 2025-07-22 01:55:26 +05:30
parent 86183cf856
commit bfa6e66450
2 changed files with 267 additions and 0 deletions

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@ -6,6 +6,7 @@ import { Search } from 'lucide-react';
import Layout from '@/components/Layout';
import GameOfSim from '@/components/GameOfSim';
import NorthcottsGame from '@/components/NorthcottsGame';
import NimGame from '@/components/NimGame';
interface Game {
id: string;
@ -16,6 +17,13 @@ interface Game {
}
const games: Game[] = [
{
id: 'nim',
title: 'Game of Nim',
description: 'A classic two-player game of strategy. Take turns removing stones from heaps. The player to take the last stone wins!',
tags: ['strategy', 'two-player', 'math', 'logic', 'game-theory'],
component: NimGame
},
{
id: 'game-of-sim',
title: 'Game of Sim',

259
src/components/NimGame.tsx Normal file
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@ -0,0 +1,259 @@
import React, { useState, useRef } from 'react';
import { Card, CardContent, CardHeader, CardTitle, CardDescription } from '@/components/ui/card';
import { Button } from '@/components/ui/button';
import { Dialog, DialogContent, DialogHeader, DialogTitle } from '@/components/ui/dialog';
import SocialShare from '@/components/SocialShare';
const SKY_BLUE = '#e0f2fe';
const MAROON = '#800000';
function getRandomInt(min: number, max: number) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
const MIN_HEAPS = 2;
const MAX_HEAPS = 10;
const MIN_STONES = 1;
const MAX_STONES = 20;
type Mode = 'random' | 'user';
type Heap = number;
type Player = 0 | 1;
const heapColors = [
'#fbbf24', '#60a5fa', '#34d399', '#f472b6', '#f87171', '#a78bfa', '#facc15', '#38bdf8', '#4ade80', '#f472b6',
'#f87171', '#a78bfa', '#fbbf24', '#60a5fa', '#34d399', '#f472b6', '#f87171', '#a78bfa', '#facc15', '#38bdf8',
];
const NimGame: React.FC = () => {
const [mode, setMode] = useState<Mode | null>(null);
const [showSetup, setShowSetup] = useState(false);
const [userHeapCount, setUserHeapCount] = useState(3);
const [userHeapSizes, setUserHeapSizes] = useState<number[]>([3, 3, 3]);
const [heaps, setHeaps] = useState<Heap[]>([]);
const [currentPlayer, setCurrentPlayer] = useState<Player>(0);
const [winner, setWinner] = useState<Player | null>(null);
// Store the initial heap sizes to keep the left edge fixed
const [initialHeapSizes, setInitialHeapSizes] = useState<number[]>([]);
// Store the initial max heap size for all heaps in a ref
const initialMaxHeapSizeRef = useRef<number>(0);
// Store the pixel width for the entire heaps group container (label + stones)
const [heapsGroupWidth, setHeapsGroupWidth] = useState<string>('0px');
// When a new game starts, record the initial heap sizes and max size and compute the group width
React.useEffect(() => {
if (mode !== null && heaps.length > 0) {
const maxSize = Math.max(...heaps);
initialMaxHeapSizeRef.current = maxSize;
// Each stone is 1.25rem wide (w-5 = 1.25rem), gap is 0.25rem (gap-1), label is ~2ch (about 1.5rem)
// Total width = label + stones + gaps between stones
const stoneWidth = 1.25; // rem
const gapWidth = 0.25; // rem
const labelWidth = 1.5; // rem (for 'min-w-[2ch]' + gap)
const totalWidthRem = maxSize > 0 ? (labelWidth + maxSize * stoneWidth + (maxSize - 1) * gapWidth) : labelWidth;
setHeapsGroupWidth(`${totalWidthRem}rem`);
}
// eslint-disable-next-line
}, [mode, heaps.length]);
// Start a new game
const startGame = (selectedMode: Mode) => {
setMode(selectedMode);
setWinner(null);
setCurrentPlayer(0);
if (selectedMode === 'random') {
const k = getRandomInt(MIN_HEAPS, MAX_HEAPS);
const randomHeaps = Array.from({ length: k }, () => getRandomInt(MIN_STONES, MAX_STONES));
setHeaps(randomHeaps);
} else {
setShowSetup(true);
}
};
// Handle user-defined setup
const handleUserSetupConfirm = () => {
setHeaps([...userHeapSizes]);
setShowSetup(false);
setWinner(null);
setCurrentPlayer(0);
};
// Handle stone click: remove all stones from clicked index to the end in that heap
const handleStoneClick = (heapIdx: number, stoneIdx: number) => {
if (winner !== null) return;
if (heaps[heapIdx] === 0) return;
const newHeaps = [...heaps];
newHeaps[heapIdx] = stoneIdx;
setHeaps(newHeaps);
// Check for win
if (newHeaps.every(h => h === 0)) {
setWinner(currentPlayer);
} else {
setCurrentPlayer((currentPlayer === 0 ? 1 : 0) as Player);
}
};
// Handle play again
const handlePlayAgain = () => {
setMode(null);
setHeaps([]);
setWinner(null);
setCurrentPlayer(0);
};
// User heap count slider change
const handleHeapCountChange = (val: number) => {
setUserHeapCount(val);
setUserHeapSizes(Array.from({ length: val }, (_, i) => userHeapSizes[i] || 3));
};
// User heap size slider change
const handleHeapSizeChange = (idx: number, val: number) => {
setUserHeapSizes(sizes => sizes.map((s, i) => (i === idx ? val : s)));
};
// Find the max heap size for centering
const maxHeapSize = Math.max(0, ...heaps, ...userHeapSizes);
// Visual heap rendering: always show all heaps, show 0 for empty, keep left anchoring, reserve space for initial max heap size
const renderHeap = (heap: number, idx: number) => {
const maxInitial = initialMaxHeapSizeRef.current;
return (
<div key={idx} className="flex flex-row items-center gap-2">
{/* Heap size label */}
<span className="font-mono text-sm text-muted-foreground min-w-[2ch] text-right">{heap}</span>
{/* Stones, left-aligned, reserve space for initial max heap size */}
<div className="flex gap-1" style={{ minWidth: `${maxInitial * 1.25 + (maxInitial - 1) * 0.25}rem` }}>
{heap > 0 ? (
Array.from({ length: heap }).map((_, i) => (
<span
key={i}
className="inline-block w-5 h-5 rounded-full cursor-pointer border-2 border-gray-400 hover:border-black transition-all"
style={{ background: heapColors[idx % heapColors.length], opacity: winner !== null ? 0.5 : 1 }}
onClick={() => handleStoneClick(idx, i)}
title="Click to remove this stone and all to its right"
/>
))
) : (
<span className="inline-block w-5 h-5 rounded-full border-2 border-dashed border-gray-300 bg-gray-100 opacity-60" />
)}
</div>
</div>
);
};
// Center the group of heaps only at the start
// We'll use a flex container with justify-center for the initial render, but keep the left edge fixed after
return (
<div className="space-y-6">
<Card>
<CardHeader>
<CardTitle className="text-2xl font-bold text-center">Game of Nim</CardTitle>
<CardDescription className="text-center">
Take turns. On your turn, click any stone in any heap to remove that stone and all stones to its right in that heap. The player to take the last stone wins!
</CardDescription>
</CardHeader>
<CardContent className="space-y-6">
{/* Game Controls */}
{mode === null && (
<div className="flex flex-col gap-4 items-center">
<Button onClick={() => startGame('random')}>Random Instance</Button>
<Button onClick={() => startGame('user')}>User-Defined Instance</Button>
</div>
)}
{mode !== null && (
<>
{/* Current Turn Indicator */}
<div className="text-center">
{winner === null ? (
<div className="space-y-2">
<p className="text-sm text-muted-foreground">Current Turn:</p>
<span className={`inline-block text-lg px-4 py-2 rounded font-semibold ${currentPlayer === 0 ? 'bg-sky-200 text-sky-800' : 'bg-red-200 text-red-800'}`}>
Player {currentPlayer + 1}
</span>
</div>
) : (
<div className="space-y-2">
<span className="inline-block text-lg px-4 py-2 rounded font-semibold bg-green-200 text-green-800">Winner: Player {winner + 1}!</span>
</div>
)}
</div>
{/* Heaps Display */}
<div className="w-full flex justify-center">
<div className="flex flex-col items-start gap-4 my-4 mx-auto" style={{ width: heapsGroupWidth }}>
{heaps.map((heap, idx) => renderHeap(heap, idx))}
</div>
</div>
{/* Play Again Button */}
{winner !== null && (
<div className="flex justify-center">
<Button onClick={handlePlayAgain}>Play Again</Button>
</div>
)}
</>
)}
{/* Instructions */}
<div className="text-center space-y-2 p-4 bg-muted rounded-lg">
<p className="text-sm text-muted-foreground">
Click any stone in any heap to remove that stone and all stones to its right in that heap. The player to take the last stone wins!
</p>
</div>
{/* User-defined setup modal */}
<Dialog open={showSetup}>
<DialogContent>
<DialogHeader>
<DialogTitle>Set up your Nim instance</DialogTitle>
</DialogHeader>
<div className="flex flex-col gap-4">
<div>
<label className="block mb-1">Number of heaps: {userHeapCount}</label>
<input
type="range"
min={MIN_HEAPS}
max={MAX_HEAPS}
value={userHeapCount}
onChange={e => handleHeapCountChange(Number(e.target.value))}
className="w-full"
/>
</div>
{Array.from({ length: userHeapCount }).map((_, idx) => (
<div key={idx} className="flex items-center gap-2">
<label>Heap {idx + 1}:</label>
<input
type="range"
min={MIN_STONES}
max={MAX_STONES}
value={userHeapSizes[idx] || 3}
onChange={e => handleHeapSizeChange(idx, Number(e.target.value))}
className="w-40"
/>
<span className="w-8 text-center">{userHeapSizes[idx] || 3}</span>
</div>
))}
<Button onClick={handleUserSetupConfirm}>Start Game</Button>
</div>
</DialogContent>
</Dialog>
</CardContent>
</Card>
{/* Social Share */}
<div className="flex justify-center">
<SocialShare
title="Game of Nim"
description="Play the classic two-player game of Nim! Take turns removing stones from heaps. The player to take the last stone wins!"
url={`${window.location.origin}/games/nim`}
/>
</div>
</div>
);
};
export default NimGame;