I’m not sure where I’m wrong with my function but it doesn’t check every possible out it seems to check a few and I don’t know how to fix it here’s my code
basic variables
const defaultScore = {0:0,1:0,2:0,3:0,4:0,5:0,6:0,7:0,8:0}
const [boardState,setBoardState] = useState(defaultScore)
const winArray = [[0,1,2],[3,4,5],[6,7,8],[0,3,6],[1,4,7],[2,5,8],[0,4,8],[2,6,4]]
const AI = side
const human = (side == 'X') ? 'O' : 'X'
a function to copy the current state of the board without changing the actual state
const copyBoard=(original :Object,index ?:any, newValue?:any)=>{
const copiedBoard = {...original}
index = Number(index)
if(index != null && newValue != null){
copiedBoard[index] = newValue
}
return copiedBoard
}
the function for checking end state
const tryWin=(board :Object)=>{
let win
let check = true
for (const i in winArray){
const v = winArray[i]
if(compareWin(board[v[0]],board[v[1]],board[v[2]])){
check = false
if(board[v[0]] == AI){
win = 10
}else{
win = -10
}
}
}
if(!Object.values(board).includes(0) && check){
win = 0
}
return win
}
the minimax
const miniMax = (board:Object, depth:number, isMax :Boolean ) =>{
if(typeof(tryWin(board)) == 'number'){
return tryWin(board)
}
if(isMax){
for (const v in board){
if(board[v] === 0){
const outcome = -100
let simBoard = copyBoard(board,v,AI)
const newOutcome = miniMax(simBoard,depth+1,!isMax)
return (typeof(newOutcome) == 'undefined') ? outcome : Math.max(outcome,newOutcome) - depth
}
}
}else{
for (const v in board){
if(board[v] === 0){
const outcome = 100
let simBoard = copyBoard(board,v,human)
const newOutcome = miniMax(simBoard,depth+1,!isMax)
return (typeof(newOutcome) == 'undefined') ? outcome : Math.min(outcome,newOutcome) + depth
}
}
}
}
const AImove =()=>{
let move
let bestOutcome = -100
for(const v in boardState){
if(boardState[v] === 0){
let simBoard = copyBoard(boardState,v,AI)
const outcome = miniMax(simBoard,0,true)
console.log('move',v,'outcome',outcome)
if(outcome > bestOutcome){
bestOutcome = outcome
move = Number(v)
}
}
}
return {move:move,outcome:bestOutcome}
}
what am I getting wrong?
