// SPDX-License-Identifier: MIT pragma solidity ^0.8.28; contract ScoreRegistry { struct Score { uint256 wpm; uint256 accuracy; string difficulty; uint256 timestamp; } mapping(address => Score) public bestScores; address[] public players; event ScoreSubmitted( address indexed player, uint256 wpm, uint256 accuracy, string difficulty, uint256 timestamp ); function submitScore( uint256 wpm, uint256 accuracy, string calldata difficulty ) external { Score storage best = bestScores[msg.sender]; if (best.timestamp == 0) players.push(msg.sender); if (wpm > best.wpm || best.timestamp == 0) { best.wpm = wpm; best.accuracy = accuracy; best.difficulty = difficulty; best.timestamp = block.timestamp; } emit ScoreSubmitted(msg.sender, wpm, accuracy, difficulty, block.timestamp); } function getBestScore(address p) external view returns (Score memory) { return bestScores[p]; } function getPlayerCount() external view returns (uint256) { return players.length; } function getPlayer(uint256 i) external view returns (address) { return players[i]; } }