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2 changed files with 143 additions and 126 deletions

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import React from "react"; import React from 'react';
import { useState } from "react"; import { useState } from 'react';
import "./style.css"; import './style.css';
function TicTacToe() { function TicTacToe() {
const [gridState, setGridState] = useState(Array(9).fill(0)); const [gridState, setGridState] = useState(Array(9).fill(0));
const [playerState, setPlayerState] = useState(false); const [playerState, setPlayerState] = useState(false);
const [winState, setWinState] = useState(0); const [winState, setWinState] = useState(0);
let localWinState = winState; let localWinState = winState;
function updateGridState(index : number, state : number) {
gridState[index] = state;
setGridState(gridState);
}
function updateGridState(index: number, state: number) { function resetGridState() {
gridState[index] = state; setGridState(Array(9).fill(0));
setGridState(gridState); setPlayerState(false);
} setWinState(0);
}
function playTurn(index: number) { function playTurn(index : number) {
if (gridState[index]) return; if (winState) {
if (winState) return; resetGridState()
return;
}
if (gridState[index]) return;
const newState = playerState ? 2 : 1; const newState = playerState ? 2 : 1;
updateGridState(index, newState); updateGridState(index, newState);
const winner = checkWinCondition(); const winner = checkWinCondition()
if (winner) { if (winner) {
localWinState = winner; localWinState = winner;
setWinState(winner); setWinState(winner);
return; return;
} }
setPlayerState(!playerState); setPlayerState(!playerState);
} }
function checkWinCondition() : number {
function checkWinCondition(): number { function getWinningValue(
function getWinningValue(a: number, b: number, c: number) { a : number,
if (a === b && b === c && a === c) { b : number,
return a; c : number
} ) {
return 0; if ((a === b) && (b === c) && (a === c)) {
} return a;
/* }
* Diagonals return 0
*/ }
{ /*
const a = gridState[3 * 0 + 0]; * Diagonals
const b = gridState[3 * 1 + 1]; */
const c = gridState[3 * 2 + 2]; {
const winner = getWinningValue(a, b, c); const a = gridState[3 * 0 + 0];
if (winner) return winner; const b = gridState[3 * 1 + 1];
} const c = gridState[3 * 2 + 2];
{ const winner = getWinningValue(a, b, c);
const a = gridState[3 * 0 + 2]; if (winner) return winner;
const b = gridState[3 * 1 + 1]; }
const c = gridState[3 * 2 + 0]; {
const winner = getWinningValue(a, b, c); const a = gridState[3 * 0 + 2];
if (winner) return winner; const b = gridState[3 * 1 + 1];
} const c = gridState[3 * 2 + 0];
/* const winner = getWinningValue(a, b, c);
* Rows and Columns if (winner) return winner;
*/ }
for (let row = 0; row < 3; row++) { /*
const a = gridState[3 * row + 0]; * Rows and Columns
const b = gridState[3 * row + 1]; */
const c = gridState[3 * row + 2]; for (let row = 0; row < 3; row++) {
const winner = getWinningValue(a, b, c); const a = gridState[3 * row + 0];
if (winner) return winner; const b = gridState[3 * row + 1];
} const c = gridState[3 * row + 2];
const winner = getWinningValue(a, b, c);
if (winner) return winner;
}
for (let column = 0; column < 3; column++) {
const a = gridState[3 * 0 + column];
const b = gridState[3 * 1 + column];
const c = gridState[3 * 2 + column];
const winner = getWinningValue(a, b, c);
if (winner) return winner;
}
for (let column = 0; column < 3; column++) { const isDrawState = () => {
const a = gridState[3 * 0 + column]; for (let i in gridState) {
const b = gridState[3 * 1 + column]; if (!gridState[i]) return false;
const c = gridState[3 * 2 + column]; };
const winner = getWinningValue(a, b, c); return true;
if (winner) return winner; }
} if (isDrawState()) return 3;
const isDrawState = () => { return 0;
for (let i in gridState) { }
if (!gridState[i]) return false;
}
return true;
};
if (isDrawState()) return 3;
return 0; let stateString = "";
} if (localWinState === 3) {
stateString = `Game draw.`
}
else if (localWinState) {
stateString = `Player ${getStateChar(localWinState)} wins.`;
}
else {
stateString = `Player ${getStateChar(playerState ? 2 : 1)} turn.`
}
let stateString = ""; return (
if (localWinState === 3) { <div className="TicTacToe">
stateString = `Game draw.`; <h1>{stateString}</h1>
} else if (localWinState) { <div className="TicTacToeGrid">
stateString = `Player ${getStateChar(localWinState)} wins.`; {
} else { gridState.map((item, index) => {
stateString = `Player ${getStateChar(playerState ? 2 : 1)} turn.`; const state = gridState[index];
} const onClick = () => { playTurn(index) };
return (<TicTacToeCell state={state} onClick={onClick}/>);
return ( })
<div className="TicTacToe"> }
<h1>{stateString}</h1> </div>
<div className="TicTacToeGrid"> </div>
{gridState.map((item, index) => { );
const getState = () => {
return gridState[index];
};
const callback = () => {
playTurn(index);
};
return <TicTacToeCell state={gridState[index]} onClick={callback} />;
})}
</div>
</div>
);
} }
interface CellProps { interface CellProps {
state: number; state: number;
onClick: () => void; onClick: () => void;
} }
function TicTacToeCell({ state, onClick }: CellProps) { function TicTacToeCell({ state, onClick }: CellProps) {
return (
<div className={`TicTacToeCell ${getStateClass(state)}`} onClick={onClick}> return (
<p>{getStateChar(state)}</p> <div className={`TicTacToeCell ${getStateClass(state)}`} onClick={onClick}>
</div> <p>{getStateChar(state)}</p>
); </div>
);
} }
function getStateChar(state: number) { function getStateChar(state : number) {
switch (state) { switch (state) {
case 1: case 1:
return "O"; return "O";
case 2: case 2:
return "X"; return "X";
default: default:
return ""; return "";
} }
} }
function getStateClass(state: number) { function getStateClass(state : number) {
switch (state) { switch (state) {
case 1: case 1:
return "CellRed"; return "CellRed";
case 2: case 2:
return "CellBlue"; return "CellBlue";
default: default:
return ""; return "";
} }
} }
export default TicTacToe; export default TicTacToe;

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.TicTacToe { .TicTacToe {
background-color: #3B3E49; background-color: #3B3E49;
color: #B9B8D6; color: #B9B8D6;
border-radius: 20px;
} }
.TicTacToeGrid { .TicTacToeGrid {
display: grid; display: grid;
width: 50vh; min-width: 50vw;
height: 50vh; min-height: 50vw;
grid-template-columns: auto auto auto; grid-template-columns: auto auto auto;
} }
@ -29,6 +30,7 @@
left: 50%; left: 50%;
top: 50%; top: 50%;
transform: translate(-50%, -50%); transform: translate(-50%, -50%);
font-size: 10vw;
} }
.CellRed { .CellRed {