// Cloned by Joseph Adedayo on 29 Nov 2022 from World "Tic-Tac-Toe (clone by Niall Cian Quigley)" by Niall Cian Quigley 
// Please leave this clone trail here.
 


// Cloned by Niall Cian Quigley on 15 Nov 2022 from World "Tic-Tac-Toe" by Scott Brady 
// Please leave this clone trail here.
 
//---- normal P5 code -------------------------------------------------------

let board;
let p1;
let p2;
let turn;
let scoreDiv;

function setup() {
    p1 = new Player("X")
    p2 = new Player("O")
    createCanvas(400, 400);
    scoreDiv = createDiv('').size(100, 25);
    board = new Board(3, p1, p2)
}

function draw() {
    background(180);
    board.display();
}

function mousePressed() {
    if (!board.winState) {
        if (board.turn === "X") {
            p1.select(board);
        } else {
            p2.select(board);
        }
        board.toggleTurn();
    } else {
        board.newGame();
    }
}


// board attributes & methods
class Board {
    constructor(size, p1, p2) {
        this.s = size;
        this.cells = [];
        this.cellSize = (width-1)/this.s;
        
        this.p1 = p1;
        this.p2 = p2;
        this.turn = this.p1.t;
        
        this.winState = false;
        this.resultText = "";
        this.newGame();
    }
    
    display() {
        let cellSize = this.cellSize;
        
        if (this.winState) {
            textSize(24);
            textAlign(CENTER);
            text(this.resultText, width / 2, height / 2);
            text("Click anywhere for a new game", width / 2, height / 2 + 30)
        } else {
            this.cells.forEach(function(element) {
                rect(element.r*cellSize, element.c*cellSize, cellSize, cellSize);
                textSize(64);
                textAlign(CENTER);
                text(element.t, element.r*cellSize + cellSize/2, element.c*cellSize+cellSize/1.5)
            });            
        }

    }
    
    update(r, c, t) {
        let turn = this.turn;
        this.cells.forEach(function(element) {
            if (element.r === r && element.c === c && element.v === 0) {
                element.t = t;
                if (turn === "X") {
                    element.v = 1;
                } else {
                    element.v = -1
                }
            }
        });
        let result = this.checkResult()
        if (result) {
            this.winState = true;
            this.resultText = result + " won!";
        }
    }
    
    toggleTurn() {
        if (this.turn == p1.t) {
            this.turn = p2.t;
            scoreDiv.html("Turn: " + p2.t);
        } else {
            this.turn = p1.t;
            scoreDiv.html("Turn: " + p1.t);
        }
    }
    
    checkResult() {
        let winner;
        let p1 = this.p1;
        let p2 = this.p2;
        let rowSums = new Array(this.s);
        let colSums = new Array(this.s);
        let diagSums = new Array(this.s);
        let numOpen = 9;
        
        let s = this.s
        
        for(let i = 0; i < this.s; i++) {
            rowSums[i] = 0
            colSums[i] = 0
            diagSums[i] = 0
        }
        
        this.cells.forEach(function(element) {
            rowSums[element.r] += element.v;
            colSums[element.c] += element.v;
            numOpen -= abs(element.v);
            
            if (abs(element.r - element.c) === 0) {
                diagSums[0] += element.v;
            }
            if (abs(element.r-element.c) === 2 || (element.r == 1 && element.c == 1)) {
                diagSums[1] += element.v;
            }
        });
        rowSums.forEach(function(element) {
        	if(element === s){
          	winner = p1.t;
            p1.win();
          }
          if (element === -1*s){
          	winner = p2.t;
            p2.win();
          }
        });
        colSums.forEach(function(element) {
        	if(element === s){
          	winner = p1.t;
            p1.win();
          }
          if (element === -1*s){
          	winner = p2.t;
            p2.win();
          }
        });
        diagSums.forEach(function(element) {
        	if(element === s){
          	winner = p1.t;
            p1.win();
          }
          if (element === -1*s){
          	winner = p2.t;
            p2.win();
          }
        });
        if (numOpen === 0 ){
          winner = "No one, it's a tie";
        }
        return winner;
    }
    
    newGame() {
        this.winState = false;
        this.turn = this.p1.t;
        scoreDiv.html("Turn: " + this.p1.t);
        this.cells = [];
        
        for(let i = 0; i < this.s; i++) {
            for (let j = 0; j < this.s; j++) {
                this.cells.push({
                    "r": i,
                    "c": j,
                    "t": "",
                    "v": 0
                });
            }
        }
    }
}

class Player {
    constructor(p) {
        this.t = p;
        this.score = 0;
    }
    
    select(board) {
        if (board.turn == this.t) {
            let cx = int(Math.floor(mouseX/board.cellSize));
            let cy = int(Math.floor(mouseY/board.cellSize));
            board.update(cx, cy, this.t);
        }
    }
    
    win() {
        this.score ++
    }
}