Mercurial
annotate react_games/src/Minesweeper/main.tsx @ 150:c37490913530
[Config] Updated .vimrc files and made command for ctags movements.
| author | June Park <parkjune1995@gmail.com> |
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| date | Sat, 10 Jan 2026 13:30:28 -0800 |
| parents | fb9bcd3145cb |
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| rev | line source |
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[ReactGames] Few games I made using react just to practice few things.
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1 import { CSSProperties, memo, useCallback, useReducer } from 'react'; |
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2 |
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3 /** |
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4 * |
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5 * Build a simplified Minesweeper game in React where the user can click cells to reveal them. |
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6 * Some cells contain mines, others show the number of adjacent mines. |
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7 * If a cell with zero adjacent mines is revealed, all connected zero-cells should be revealed |
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8 * automatically. |
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9 * The game ends if a mine is revealed, and the player wins if all non-mine cells are revealed. |
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10 * |
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11 * The board should be 10×10. |
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12 * |
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13 * Clicking a cell reveals it: |
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14 * |
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15 * If it’s a mine, the game ends with a “Game Over” message. |
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16 * |
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17 * If it’s not a mine, show the number of adjacent mines (0–8). |
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18 * |
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19 * If the number is 0, automatically reveal all connected empty cells and their numbered border. |
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20 * |
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21 * The player wins when all non-mine cells are revealed. |
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22 * |
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23 * Include a Reset button to restart the game with a new random layout. |
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24 * |
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25 * Optional: Allow right-clicking a cell to toggle a flag icon (to mark suspected mines). |
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26 */ |
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27 |
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28 enum CellValue { |
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29 EMPTY, |
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30 BOMB, |
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31 } |
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32 |
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33 interface Cell { |
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34 value: CellValue; |
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35 numberOfAdjacentBomb: number; |
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36 isShown: boolean; |
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37 isFlag: boolean, |
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38 } |
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39 |
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40 |
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41 type Board = Cell[][]; |
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42 |
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43 enum GameStatus { |
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44 PLAYABLE="Reveal all the map while not clicking on mine", |
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45 WON="YOU WON", |
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46 LOST="YOU LOST" |
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47 } |
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48 |
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49 interface GameState { |
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50 board: Board; |
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51 status: GameStatus; |
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52 } |
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53 |
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54 const MAX_SIZE_LEN = 10; |
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55 const N_BOMBS = 10; |
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56 const DIRECTION = [ |
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57 [0,1], |
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58 [1,1], |
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59 [1,0], |
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60 [1,-1], |
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61 [0,-1], |
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62 [-1,-1], |
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63 [-1,0], |
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64 [-1,1], |
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65 ] |
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66 |
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67 const constructGameState = (): GameState => { |
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68 let board: Board = Array.from( |
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69 { length: MAX_SIZE_LEN }, () => Array.from( |
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70 { length: MAX_SIZE_LEN }, (): Cell => ( |
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71 { |
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72 value: CellValue.EMPTY, numberOfAdjacentBomb: 0, isShown: false , |
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73 isFlag: false, |
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74 }) |
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75 ) |
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76 ); |
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77 |
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78 // Place the bombs |
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79 let placedBomb = 0; |
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80 const bombPlacments: number[][] = []; |
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81 while (placedBomb < N_BOMBS) { |
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82 const bombRowIdx = Math.floor(Math.random() * MAX_SIZE_LEN); |
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83 const bombColIdx = Math.floor(Math.random() * MAX_SIZE_LEN); |
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84 if (board[bombRowIdx][bombColIdx].value === CellValue.EMPTY) { |
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85 board[bombRowIdx][bombColIdx] = { |
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86 ...board[bombRowIdx][bombColIdx], |
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87 value: CellValue.BOMB, |
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88 } |
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89 placedBomb++; |
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90 bombPlacments.push([bombRowIdx, bombColIdx]); |
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91 } |
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92 } |
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93 |
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94 // Find all adjacent cells and add values |
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95 for (const [bombR, bombC] of bombPlacments) { |
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96 for (const [dr, dc] of DIRECTION) { |
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97 if (board[bombR+dr]?.[bombC+dc]?.value === CellValue.EMPTY) { |
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98 board[bombR+dr][bombC+dc] = { |
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99 ...board[bombR+dr][bombC+dc], |
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100 numberOfAdjacentBomb: board[bombR+dr][bombC+dc].numberOfAdjacentBomb + 1 |
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101 } |
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102 } |
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103 } |
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104 } |
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105 |
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106 return { |
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107 board, |
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108 status: GameStatus.PLAYABLE, |
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109 } |
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110 } |
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111 |
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112 enum GameActionEnum { |
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113 CHECK, |
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114 RESET, |
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115 FLAG, |
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116 } |
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117 |
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118 interface Position { |
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119 row: number; |
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120 col: number; |
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121 } |
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122 |
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123 type GameAction = |
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124 | { type: GameActionEnum.CHECK, position: Position } |
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125 | { type: GameActionEnum.FLAG, position: Position } |
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126 | { type: GameActionEnum.RESET } |
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127 |
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128 const gameStateReducer = (state: GameState, action: GameAction): GameState => { |
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129 switch(action.type) { |
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130 case GameActionEnum.CHECK: |
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131 const {position} = action; |
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132 const board = state.board.map(row=>row.map(col=>({...col}))); |
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133 const start = board[position.row][position.col]; |
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134 |
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135 if (start.value === CellValue.BOMB) { |
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136 for (const row of board) for (const cell of row) cell.isShown = true; |
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137 return { board, status: GameStatus.LOST }; |
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138 } |
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139 |
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140 if (!start.isShown) start.isShown = true; |
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141 |
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142 if (start.numberOfAdjacentBomb === 0) { |
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143 const q: Position[] = [position]; |
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144 while (q.length) { |
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145 const { row, col } = q.shift()!; |
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146 for (const [dr, dc] of DIRECTION) { |
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147 const r = row + dr, c = col + dc; |
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148 const n = board[r]?.[c]; |
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149 if (!n || n.isShown || n.value === CellValue.BOMB) continue; |
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150 n.isShown = true; |
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151 if (n.numberOfAdjacentBomb === 0) q.push({ row: r, col: c }); |
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152 } |
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153 } |
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154 } |
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155 |
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156 const hidden = board.flat().filter(c => !c.isShown).length; |
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157 const status = hidden === N_BOMBS ? GameStatus.WON : GameStatus.PLAYABLE; |
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158 return { board, status }; |
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159 |
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160 case GameActionEnum.FLAG: |
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161 const newBoard = state.board.map( |
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162 (row, rowIdx) => rowIdx === action.position.row ? |
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163 row.map( |
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164 (col, colIdx): Cell => |
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165 colIdx === action.position.col ? |
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166 ({...col, isFlag: true }) : col |
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167 ) : row |
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168 ); |
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169 console.log(newBoard); |
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170 return { |
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171 ...state, |
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172 board: newBoard, |
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173 } |
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174 case GameActionEnum.RESET: |
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175 return constructGameState(); |
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176 } |
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177 } |
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178 |
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179 interface StylesProp { |
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180 board: CSSProperties; |
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181 cell: CSSProperties; |
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182 } |
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183 |
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184 const styles: StylesProp = { |
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185 board: { |
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186 display: "grid", |
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187 gridTemplateColumns: `repeat(${MAX_SIZE_LEN}, 1fr)`, |
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188 width: 400, |
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189 }, |
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190 cell: { |
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191 display: "flex", |
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192 justifyContent: "center", |
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193 alignItems: "center", |
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194 width: "100%", |
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195 aspectRatio: "1 / 1", |
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196 border: "1px solid black", |
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197 backgroundColor: "#e6e6e6" |
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198 } |
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199 } |
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200 |
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201 interface CellComponentProp { |
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202 cellValue: Cell; |
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203 row: number; |
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204 col: number; |
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205 placeDispatch: (row: number, col: number) => void; |
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206 flagDispatch: (row: number, col: number) => void; |
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207 } |
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208 |
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209 const CellComponent = memo(({ |
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210 cellValue, row, |
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211 col, placeDispatch, |
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212 flagDispatch |
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213 }: CellComponentProp) => { |
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214 console.log("re-render"); |
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215 const handleOnClikck = useCallback(() => { |
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216 placeDispatch(row, col); |
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217 }, [row, col, placeDispatch]) |
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218 |
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219 const handleOnRightClikck = useCallback((event: React.MouseEvent<HTMLDivElement>) => { |
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220 event.preventDefault(); |
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221 flagDispatch(row, col); |
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222 }, [row, col, placeDispatch]) |
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223 |
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224 |
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225 return ( |
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226 <div |
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227 style={{ |
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228 ...styles.cell, |
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229 cursor: "pointer", |
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230 backgroundColor: cellValue.isShown ? "#fafafa" : "#e6e6e6", |
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231 }} |
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232 onClick={handleOnClikck} |
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233 onContextMenu={handleOnRightClikck} |
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234 > |
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235 {cellValue.isShown |
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236 ? cellValue.value === CellValue.BOMB |
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237 ? "💣" |
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238 : cellValue.numberOfAdjacentBomb || "" |
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239 : cellValue.isFlag |
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240 ? "🚩" |
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241 : ""} |
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242 </div> |
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243 ) |
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244 }, (prev, next) => |
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245 prev.cellValue.isShown === next.cellValue.isShown && |
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246 prev.cellValue.isFlag === next.cellValue.isFlag) |
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247 |
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248 const Minesweeper = () => { |
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249 const [state, dispatch] = useReducer(gameStateReducer, null, constructGameState); |
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250 |
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251 const placeDispatch = useCallback( |
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252 (row: number, col: number) => { |
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253 dispatch({type: GameActionEnum.CHECK, position: { row, col }}) |
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254 }, [dispatch]) |
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255 |
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256 const flagDispatch = useCallback( |
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257 (row: number, col: number) => { |
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258 dispatch({type: GameActionEnum.FLAG, position: { row, col }}) |
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259 }, [dispatch]) |
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260 |
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261 return ( |
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262 <> |
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263 <h1> {state.status} </h1> |
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264 <div style={styles.board}> |
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265 {state.board.map( |
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266 (row, rowIdx) => row.map( |
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267 (cell, colIdx) => ( |
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268 <CellComponent |
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269 key={`${rowIdx}-${colIdx}`} |
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270 cellValue={cell} |
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271 row={rowIdx} |
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272 col={colIdx} |
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273 placeDispatch={placeDispatch} |
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274 flagDispatch={flagDispatch} />) |
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275 ) |
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276 )} |
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277 </div> |
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278 <button onClick={()=>{dispatch({type: GameActionEnum.RESET})}}> reset </button> |
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279 </> |
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280 ) |
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281 } |
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282 |
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283 export { |
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284 Minesweeper, |
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285 } |