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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "TrustworthyRockPaperScissorsTournamentSpecs.sol";
contract TrustworthyRockPaperScissorsTournament is TrustworthyRockPaperScissorsTournamentSpecs {
enum Move { ROCK, PAPER, SCISSOR }
enum Status { IN_PROGRESS, END }
struct PlayerInfo {
address payable id;
uint8 wins;
Move[] games;
uint fees;
}
mapping(Player => PlayerInfo) players;
uint8 target;
uint256 matchFee;
Status status;
Player winner;
address payable owner;
uint8 override public disputedMatches;
constructor(
address payable firstPlayer,
address payable secondPlayer,
uint8 targetWins,
uint256 singleMatchFee
) {
require(firstPlayer != secondPlayer, "Players must be two different addresses.");
require(firstPlayer != address(0) && secondPlayer != address(0), "Players address are not valid.");
players[Player.First].id = firstPlayer;
players[Player.Second].id = secondPlayer;
target = targetWins;
matchFee = singleMatchFee;
status = Status.IN_PROGRESS;
disputedMatches = 0;
owner = payable(msg.sender);
}
function moveRock() external override payable {
move(Move.ROCK);
}
function movePaper() external override payable {
move(Move.PAPER);
}
function moveScissor() external override payable {
move(Move.SCISSOR);
}
modifier mustBeAPlayer() {
require(msg.sender == players[Player.First].id || msg.sender == players[Player.Second].id, "You're not one of the players.");
_;
}
function move(Move move_type) internal mustBeAPlayer {
require(status != Status.END, "Game has already finish");
require(msg.value >= matchFee, "You need to pass the minimum fee to play");
Player p = (msg.sender == players[Player.First].id ? Player.First : Player.Second);
players[p].games.push(move_type);
players[p].fees += msg.value;
checkGame();
}
function checkGame() internal {
uint8 n = uint8(
players[Player.First].games.length < players[Player.Second].games.length
? players[Player.First].games.length
: players[Player.Second].games.length
);
for (uint8 i = disputedMatches; i < n; ++i) {
Move p1 = players[Player.First].games[i];
Move p2 = players[Player.Second].games[i];
// Fair play
if (p1 == p2) continue;
if (
(p1 == Move.ROCK && p2 == Move.SCISSOR) ||
(p1 == Move.SCISSOR && p2 == Move.PAPER) ||
(p1 == Move.PAPER && p2 == Move.ROCK)
) {
players[Player.First].wins++;
emit MatchWonBy(Player.First, i);
} else {
players[Player.Second].wins++;
emit MatchWonBy(Player.Second, i);
}
disputedMatches++;
if (players[Player.First].wins == target) {
emit TournamentWonBy(Player.First);
winner = Player.First;
endGame();
} else if (players[Player.Second].wins == target) {
emit TournamentWonBy(Player.Second);
winner = Player.Second;
endGame();
}
}
}
function endGame() internal {
require(status != Status.END, "Game has already finish");
assert(players[winner].wins == target);
uint total = players[Player.First].fees + players[Player.Second].fees;
assert(total == address(this).balance);
players[winner].id.transfer(total);
status = Status.END;
selfdestruct(owner);
}
}
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