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SpeedyWordsSmartContract.sol
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SpeedyWordsSmartContract.sol
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pragma solidity >=0.7.0 <=0.8.0;
// The contract represents our program.
contract NameThingsCities {
// Definition of variables
/*
- We used struct variables for greater versatility.
- The 'master' variable, if true, allows the player to choose the letter.
- Within the structs, there are three string variables to store the game's answers.
*/
struct Player {
address payable playerAddress;
bytes name;
bytes things;
bytes city;
uint256 errorCount;
uint256 points;
bool win;
bool isMaster;
}
// Variable to identify the game letter
bytes public gameLetter;
// Struct Instances
Player public mario;
Player public luigi;
// Constructor
constructor() {
mario.playerAddress = payable(0x5B38Da6a701c568545dCfcB03FcB875f56beddC4);
luigi.playerAddress = payable(0xAb8483F64d9C6d1EcF9b849Ae677dD3315835cb2);
}
// Function Definitions
// Master selection
function chooseMaster(bool isMaster) public {
mario.isMaster = isMaster;
}
// Alternative master insertion
// function chooseMaster(string memory x) public {
// if (x == "Mario") {
// mario.isMaster = true;
// } else if (x == "Luigi") {
// luigi.isMaster = true;
// } else {
// require(msg.sender == x.playerAddress, "User does not exist :(");
// }
// }
// Letter selection
function selectLetter(string memory newLetter) public {
gameLetter = bytes(newLetter);
}
modifier onlyByMaster(bool isMaster) {
require(msg.sender != mario.playerAddress, "User is not the Master :(");
}
function compareBytes(bytes1 a, bytes1 b) internal pure returns (bool) {
return keccak256(abi.encode(a)) == keccak256(abi.encode(b));
}
// Insert name
function insertName(string memory word1, string memory word2) public {
mario.name = bytes(word1);
luigi.name = bytes(word2);
bytes memory buffer1 = bytes(word1);
bytes memory buffer2 = bytes(word2);
bool x = compareBytes(buffer1[0], gameLetter[0]);
bool y = compareBytes(buffer2[0], gameLetter[0]);
if (!x) {
mario.errorCount++;
}
if (!y) {
luigi.errorCount++;
}
}
// Insert things
function insertThings(string memory word1, string memory word2) public {
mario.things = bytes(word1);
luigi.things = bytes(word2);
bytes memory buffer1 = bytes(word1);
bytes memory buffer2 = bytes(word2);
bool x = compareBytes(buffer1[0], gameLetter[0]);
bool y = compareBytes(buffer2[0], gameLetter[0]);
if (!x) {
mario.errorCount++;
}
if (!y) {
luigi.errorCount++;
}
}
// Insert city
function insertCity(string memory word1, string memory word2) public {
mario.city = bytes(word1);
luigi.city = bytes(word2);
bytes memory buffer1 = bytes(word1);
bytes memory buffer2 = bytes(word2);
bool x = compareBytes(buffer1[0], gameLetter[0]);
bool y = compareBytes(buffer2[0], gameLetter[0]);
if (!x) {
mario.errorCount++;
}
if (!y) {
luigi.errorCount++;
}
}
// Check winner
function determineWinner() public {
if (mario.errorCount < luigi.errorCount) {
mario.win = true;
} else {
luigi.win = true;
}
}
// Decrease Ethereum
function decreaseEthereum() payable public {
if (!mario.win) {
luigi.playerAddress.transfer(msg.value);
} else if (!luigi.win) {
mario.playerAddress.transfer(msg.value);
}
}
// Add points
function addPoints() public {
if (mario.win) {
mario.points++;
} else if (luigi.win) {
luigi.points++;
}
}
}