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1 file changed, 252 insertions
tictactoe_bot_dynamic.go(file created)
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| 1 | + | package main | |
| 2 | + | ||
| 3 | + | import ( | |
| 4 | + | "fmt" | |
| 5 | + | "maps" | |
| 6 | + | "slices" | |
| 7 | + | "strconv" | |
| 8 | + | "strings" | |
| 9 | + | ) | |
| 10 | + | ||
| 11 | + | const emptyCellName = " " | |
| 12 | + | ||
| 13 | + | type User struct { | |
| 14 | + | name string | |
| 15 | + | isBot bool | |
| 16 | + | } | |
| 17 | + | ||
| 18 | + | type Board struct { | |
| 19 | + | board [][]*User | |
| 20 | + | winningUser *User | |
| 21 | + | ||
| 22 | + | combinations [][]**User | |
| 23 | + | ||
| 24 | + | users []User | |
| 25 | + | } | |
| 26 | + | ||
| 27 | + | func (b Board) String() string { | |
| 28 | + | size := len(b.board) | |
| 29 | + | rowStrings := make([]string, size+1) | |
| 30 | + | ||
| 31 | + | columnIndices := make([]string, size) | |
| 32 | + | for i := 0; i < size; i++ { | |
| 33 | + | rowIndex := strconv.Itoa(i) | |
| 34 | + | if i < 10 { | |
| 35 | + | rowIndex = " " + rowIndex | |
| 36 | + | } | |
| 37 | + | columnIndices[i] = rowIndex | |
| 38 | + | } | |
| 39 | + | rowStrings[0] = "/" + strings.Join(columnIndices, "") | |
| 40 | + | ||
| 41 | + | for i, row := range b.board { | |
| 42 | + | rowIndex := strconv.Itoa(i) | |
| 43 | + | if i < 10 { | |
| 44 | + | rowIndex += " " | |
| 45 | + | } | |
| 46 | + | ||
| 47 | + | columnStrings := make([]string, size) | |
| 48 | + | for j, c := range row { | |
| 49 | + | if c == nil { | |
| 50 | + | columnStrings[j] = emptyCellName | |
| 51 | + | } else { | |
| 52 | + | columnStrings[j] = c.name | |
| 53 | + | } | |
| 54 | + | } | |
| 55 | + | ||
| 56 | + | rowStrings[i+1] = rowIndex + strings.Join(columnStrings, "|") | |
| 57 | + | } | |
| 58 | + | ||
| 59 | + | return strings.Join(rowStrings, "\n") | |
| 60 | + | } | |
| 61 | + | ||
| 62 | + | func changeCellUserInput(board *[][]*User, user *User) { | |
| 63 | + | var row int | |
| 64 | + | for { | |
| 65 | + | fmt.Print("row: ") | |
| 66 | + | fmt.Scanln(&row) | |
| 67 | + | ||
| 68 | + | if 0 <= row && row < len(*board) { | |
| 69 | + | break | |
| 70 | + | } | |
| 71 | + | } | |
| 72 | + | ||
| 73 | + | var col int | |
| 74 | + | for { | |
| 75 | + | fmt.Print("col: ") | |
| 76 | + | fmt.Scanln(&col) | |
| 77 | + | ||
| 78 | + | if 0 <= col && col < len(*board) { | |
| 79 | + | break | |
| 80 | + | } | |
| 81 | + | } | |
| 82 | + | ||
| 83 | + | (*board)[row][col] = user | |
| 84 | + | } | |
| 85 | + | ||
| 86 | + | func getWinningCombinations(board *[][]*User) [][]**User { | |
| 87 | + | // there are 2 * size + 2 winning combinations in total | |
| 88 | + | winningCombinations := make([][]**User, len(*board)*2+2) | |
| 89 | + | ||
| 90 | + | // size row wins | size col wins | |
| 91 | + | for i, _ := range *board { | |
| 92 | + | row := make([]**User, len(*board)) | |
| 93 | + | col := make([]**User, len(*board)) | |
| 94 | + | ||
| 95 | + | for j, _ := range *board { | |
| 96 | + | row[j] = &(*board)[i][j] | |
| 97 | + | col[j] = &(*board)[j][i] | |
| 98 | + | } | |
| 99 | + | ||
| 100 | + | winningCombinations[i*2] = row | |
| 101 | + | winningCombinations[i*2+1] = col | |
| 102 | + | } | |
| 103 | + | ||
| 104 | + | // 2 vertical wins | |
| 105 | + | a := make([]**User, len(*board)) | |
| 106 | + | b := make([]**User, len(*board)) | |
| 107 | + | for i, _ := range *board { | |
| 108 | + | a[i] = &(*board)[i][i] | |
| 109 | + | b[i] = &(*board)[i][len(*board)-i-1] | |
| 110 | + | } | |
| 111 | + | winningCombinations[len(*board)*2] = a | |
| 112 | + | winningCombinations[len(*board)*2+1] = b | |
| 113 | + | ||
| 114 | + | return winningCombinations | |
| 115 | + | } | |
| 116 | + | ||
| 117 | + | type combinationStats struct { | |
| 118 | + | user *User | |
| 119 | + | ||
| 120 | + | totalCount int | |
| 121 | + | userCount int | |
| 122 | + | ||
| 123 | + | emptyCells []**User | |
| 124 | + | } | |
| 125 | + | ||
| 126 | + | func (b *Board) computeCombinationStats(user *User) []combinationStats { | |
| 127 | + | newCombinations := [][]**User{} | |
| 128 | + | cs := []combinationStats{} | |
| 129 | + | ||
| 130 | + | for _, combination := range b.combinations { | |
| 131 | + | c := combinationStats{} | |
| 132 | + | allUsersMap := make(map[*User]int) | |
| 133 | + | ||
| 134 | + | for _, cell := range combination { | |
| 135 | + | c.totalCount++ | |
| 136 | + | ||
| 137 | + | if *cell == nil { | |
| 138 | + | c.emptyCells = append(c.emptyCells, cell) | |
| 139 | + | } else { | |
| 140 | + | allUsersMap[*cell]++ | |
| 141 | + | } | |
| 142 | + | } | |
| 143 | + | ||
| 144 | + | allUsers := slices.Collect(maps.Keys(allUsersMap)) | |
| 145 | + | if len(allUsers) == 1 { | |
| 146 | + | c.user = allUsers[0] | |
| 147 | + | c.userCount = allUsersMap[allUsers[0]] | |
| 148 | + | cs = append(cs, c) | |
| 149 | + | newCombinations = append(newCombinations, combination) | |
| 150 | + | ||
| 151 | + | if c.userCount == c.totalCount { | |
| 152 | + | b.winningUser = slices.Collect(maps.Keys(allUsersMap))[0] | |
| 153 | + | } | |
| 154 | + | } else if len(allUsers) == 0 { | |
| 155 | + | cs = append(cs, c) | |
| 156 | + | newCombinations = append(newCombinations, combination) | |
| 157 | + | } | |
| 158 | + | } | |
| 159 | + | ||
| 160 | + | b.combinations = newCombinations | |
| 161 | + | return cs | |
| 162 | + | } | |
| 163 | + | ||
| 164 | + | func changeCellBotInput(combinations []combinationStats, user *User) { | |
| 165 | + | // now count the still possible wins each pointer has | |
| 166 | + | cellScores := make(map[**User]int) | |
| 167 | + | for _, c := range combinations { | |
| 168 | + | score := 0 | |
| 169 | + | if c.user == nil || c.user == user { | |
| 170 | + | score = 1 + c.userCount | |
| 171 | + | } else { | |
| 172 | + | score = 1 + c.userCount | |
| 173 | + | } | |
| 174 | + | ||
| 175 | + | for _, emptyCell := range c.emptyCells { | |
| 176 | + | cellScores[emptyCell] += score | |
| 177 | + | } | |
| 178 | + | } | |
| 179 | + | ||
| 180 | + | bestCellScore := 0 | |
| 181 | + | var bestCell **User | |
| 182 | + | for cell, cellScore := range cellScores { | |
| 183 | + | if cellScore > bestCellScore { | |
| 184 | + | bestCellScore = cellScore | |
| 185 | + | bestCell = cell | |
| 186 | + | } | |
| 187 | + | } | |
| 188 | + | ||
| 189 | + | *bestCell = user | |
| 190 | + | } | |
| 191 | + | ||
| 192 | + | func (b Board) Play() { | |
| 193 | + | turn := 0 | |
| 194 | + | for { | |
| 195 | + | currentUser := &b.users[turn%len(b.users)] | |
| 196 | + | fmt.Println() | |
| 197 | + | fmt.Println("it's the turn of player " + currentUser.name) | |
| 198 | + | fmt.Println(b.String()) | |
| 199 | + | ||
| 200 | + | cs := b.computeCombinationStats(currentUser) | |
| 201 | + | ||
| 202 | + | if b.winningUser != nil { | |
| 203 | + | fmt.Println() | |
| 204 | + | if b.winningUser.isBot { | |
| 205 | + | fmt.Println("THE BOT " + b.winningUser.name + " WON!!!") | |
| 206 | + | } else { | |
| 207 | + | fmt.Println("THE USER " + b.winningUser.name + " WON!!!") | |
| 208 | + | } | |
| 209 | + | break | |
| 210 | + | } | |
| 211 | + | ||
| 212 | + | if len(b.combinations) == 0 { | |
| 213 | + | fmt.Println() | |
| 214 | + | fmt.Println("GAME OVER. NEITHER ONE WON") | |
| 215 | + | break | |
| 216 | + | } | |
| 217 | + | ||
| 218 | + | if currentUser.isBot { | |
| 219 | + | changeCellBotInput(cs, currentUser) | |
| 220 | + | } else { | |
| 221 | + | fmt.Println() | |
| 222 | + | changeCellUserInput(&b.board, currentUser) | |
| 223 | + | } | |
| 224 | + | ||
| 225 | + | turn++ | |
| 226 | + | } | |
| 227 | + | } | |
| 228 | + | ||
| 229 | + | func createBoardGrid(size int) [][]*User { | |
| 230 | + | board := make([][]*User, size) | |
| 231 | + | for r := 0; r < size; r++ { | |
| 232 | + | board[r] = make([]*User, size) | |
| 233 | + | } | |
| 234 | + | return board | |
| 235 | + | } | |
| 236 | + | ||
| 237 | + | func NewBoard(size int, users []User) Board { | |
| 238 | + | board := createBoardGrid(size) | |
| 239 | + | return Board{ | |
| 240 | + | board: board, | |
| 241 | + | combinations: getWinningCombinations(&board), | |
| 242 | + | users: users, | |
| 243 | + | } | |
| 244 | + | } | |
| 245 | + | ||
| 246 | + | func main() { | |
| 247 | + | board := NewBoard(3, []User{ | |
| 248 | + | {name: "X", isBot: true}, | |
| 249 | + | {name: "O", isBot: false}, | |
| 250 | + | }) | |
| 251 | + | board.Play() | |
| 252 | + | } | |
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