var state = Object.freeze({
NotInitialized: 0,
Playing: 1,
Tie: 4,
Player1Won: 5,
Player2Won: 6,
});
var game = {
width: 7,
height: 6,
state: state.NotInitialized,
init: function() {
this.state = state.Playing;
this.player = 1;
this.board = [];
this.latest = undefined;
this.winner = 0;
for (let x = 0; x < this.width; x++) {
this.board[x] = [];
}
},
getAvailableCols: function() {
var cols = [];
if(this.winner == 0)
for(let x in this.board)
if(this.board[x].length < this.height)
cols.push(x);
return cols;
},
getWinner: function() {
if(this.winner > 0)
return this.winner;
var deltas = [1,2,3];
for(var x = 0; x < this.width; x++) {
for(var y = 0; y < this.height; y++) {
var player = this.board[x][y];
var upperBound = y < this.height - 3;
var lowerBound = y > 2;
var rightBound = x < this.width - 3;
if(player != undefined) {
if((upperBound && deltas.every(d => player == this.board[x][y+d])) //vertical
|| (rightBound
&& ((deltas.every(d => player == this.board[x+d][y])) //horizontal
|| (upperBound && deltas.every(d => player == this.board[x+d][y+d])) //diagonal right up
|| (lowerBound && deltas.every(d => player == this.board[x+d][y-d]))))) { //diagonal right down
return (this.winner = player);
}
}
}
}
return 0;
},
dropDisc: function(col) {
if(this.board[col].length == this.height) {
console.log("this column is full. Try another one!");
console.log(`the available columns are ${this.getAvailableCols()}`);
return false;
}
this.board[col].push(this.player);
this.latest = { x: col, y: (this.board[col].length - 1) };
if(this.getWinner() > 0)
{
this.state = state.Tie | this.winner;
}
else if(this.board.every(x => x.length == this.height))
{
this.state = state.Tie;
}
this.player ^= 3;
return true;
}
}
// game.init();
// console.log(game.board.length);
// console.log(game.getAvailableCols());
