2048-cli-game
Version:
2048 game for terminal.
189 lines (188 loc) • 7.47 kB
JavaScript
import { GRID_SIZE, MAX_VALUE } from './constants.js';
export const sumArray = (arr) => arr.reduce((a, b) => a + b, 0);
// 收集所有空白位置
export const getEmptyCells = (nums) => {
const emptyCells = [];
for (let row = 0; row < nums.length; row++) {
for (let col = 0; col < nums[row].length; col++) {
if (nums[row][col] === 0) {
emptyCells.push({ row, col });
}
}
}
return emptyCells;
};
export const getRandomCells = (emptyCells) => {
if (emptyCells.length) {
return emptyCells[Math.floor(Math.random() * emptyCells.length)];
}
else {
return;
}
};
// 移动并合并方块
export const moveTiles = (board, direction) => {
const newBoard = JSON.parse(JSON.stringify(board));
let moved = false;
let score = 0;
// 根据方向处理移动
switch (direction) {
case 'up':
for (let col = 0; col < GRID_SIZE; col++) {
for (let row = 1; row < GRID_SIZE; row++) {
if (newBoard[row][col] !== 0) {
let currentRow = row;
while (currentRow > 0 && newBoard[currentRow - 1][col] === 0) {
// 向上移动
newBoard[currentRow - 1][col] = newBoard[currentRow][col];
newBoard[currentRow][col] = 0;
currentRow--;
moved = true;
}
// 检查合并
if (currentRow > 0 &&
newBoard[currentRow - 1][col] === newBoard[currentRow][col]) {
// 合并方块
newBoard[currentRow - 1][col] *= 2;
score += newBoard[currentRow - 1][col];
newBoard[currentRow][col] = 0;
moved = true;
}
}
}
}
break;
case 'down':
for (let col = 0; col < GRID_SIZE; col++) {
for (let row = GRID_SIZE - 2; row >= 0; row--) {
if (newBoard[row][col] !== 0) {
let currentRow = row;
while (currentRow < GRID_SIZE - 1 &&
newBoard[currentRow + 1][col] === 0) {
// 向下移动
newBoard[currentRow + 1][col] = newBoard[currentRow][col];
newBoard[currentRow][col] = 0;
currentRow++;
moved = true;
}
// 检查合并
if (currentRow < GRID_SIZE - 1 &&
newBoard[currentRow + 1][col] === newBoard[currentRow][col]) {
// 合并方块
newBoard[currentRow + 1][col] *= 2;
score += newBoard[currentRow + 1][col];
newBoard[currentRow][col] = 0;
moved = true;
}
}
}
}
break;
case 'left':
for (let row = 0; row < GRID_SIZE; row++) {
for (let col = 1; col < GRID_SIZE; col++) {
if (newBoard[row][col] !== 0) {
let currentCol = col;
while (currentCol > 0 && newBoard[row][currentCol - 1] === 0) {
// 向左移动
newBoard[row][currentCol - 1] = newBoard[row][currentCol];
newBoard[row][currentCol] = 0;
currentCol--;
moved = true;
}
// 检查合并
if (currentCol > 0 &&
newBoard[row][currentCol - 1] === newBoard[row][currentCol]) {
// 合并方块
newBoard[row][currentCol - 1] *= 2;
score += newBoard[row][currentCol - 1];
newBoard[row][currentCol] = 0;
moved = true;
}
}
}
}
break;
case 'right':
for (let row = 0; row < GRID_SIZE; row++) {
for (let col = GRID_SIZE - 2; col >= 0; col--) {
if (newBoard[row][col] !== 0) {
let currentCol = col;
while (currentCol < GRID_SIZE - 1 &&
newBoard[row][currentCol + 1] === 0) {
// 向右移动
newBoard[row][currentCol + 1] = newBoard[row][currentCol];
newBoard[row][currentCol] = 0;
currentCol++;
moved = true;
}
// 检查合并
if (currentCol < GRID_SIZE - 1 &&
newBoard[row][currentCol + 1] === newBoard[row][currentCol]) {
// 合并方块
newBoard[row][currentCol + 1] *= 2;
score += newBoard[row][currentCol + 1];
newBoard[row][currentCol] = 0;
moved = true;
}
}
}
}
break;
}
return { board: newBoard, moved, score };
};
export function countDigits(num) {
// 处理负号和小数点
const numStr = String(num).replace(/[-.]/g, '');
return numStr.length;
}
export const randomGenerateNum = (board) => {
const emptyCells = getEmptyCells(board);
const cells = getRandomCells(emptyCells);
if (cells) {
// 90% 概率生成2，10%概率生成4
board[cells.row][cells.col] = Math.random() < 0.9 ? 2 : 4;
}
return JSON.parse(JSON.stringify(board));
};
export const isGameOver = (nums) => {
// 检查是否有空白位置
for (let row = 0; row < GRID_SIZE; row++) {
for (let col = 0; col < GRID_SIZE; col++) {
if (nums[row][col] === 0)
return false;
}
}
// 检查是否有相邻的相同方块
for (let row = 0; row < GRID_SIZE; row++) {
for (let col = 0; col < GRID_SIZE; col++) {
const value = nums[row][col];
// 检查右侧方块
if (col < GRID_SIZE - 1 && nums[row][col + 1] === value)
return false;
// 检查下方方块
if (row < GRID_SIZE - 1 && nums[row + 1][col] === value)
return false;
}
}
return true;
};
export const hasMaxValue = (board) => {
for (let row = 0; row < GRID_SIZE; row++) {
for (let col = 0; col < GRID_SIZE; col++) {
if (board[row][col] === MAX_VALUE) {
board[row][col] = 0;
return true;
}
}
}
return false;
};
// 生成初始游戏板
export const initializeBoard = () => {
const board = Array(GRID_SIZE)
.fill(0)
.map(() => Array(GRID_SIZE).fill(0));
return board;
};