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Connect4.js
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document.write("<div></div>");
//board
alert("Go for the Glory, Go for the Score, Go for It, Connect Four!");
var board = [
["#", "#", "#", "#", "#", "#", "#"],
["#", "#", "#", "#", "#", "#", "#"],
["#", "#", "#", "#", "#", "#", "#"],
["#", "#", "#", "#", "#", "#", "#"],
["#", "#", "#", "#", "#", "#", "#"],
["#", "#", "#", "#", "#", "#", "#"],
];
var whoseturn = "Red";
var gamefinished = 0;
while(gamefinished === 0){
//input
var fill = false;
var move = prompt(whoseturn + " turn. What is your move? (1-7)");
if (move === "stop"){
break;
};
move = parseInt(move);
do {
while(move != 1 && move != 2 && move != 3 && move != 4 && move != 5 && move != 6 && move != 7){
var move = prompt("Only 1-7, pick again.")
move = parseInt(move);
};
move = move - 1;
var i = 0;
if(board[i][move] === "#"){
for(var i = 5; i >= 0; i--){
if(board[i][move] === "#"){
var chip = whoseturn.substring(0,1);
board[i][move] = chip;
//so the tiles do not overflow i.e. more than the vertical length can hold
fill = true;
break;
};
};
} else {
alert("Column filled, please try a different column");
};
} while(fill === false);
//check if last move made a win
//horizontal
if (move < 4) {
if (board[i][move + 1] === chip && board[i][move + 2] === chip && board[i][move + 3] === chip) {
redraw();
alert("Congratulations! " + whoseturn + " Wins the Game!");
gamefinished = 1;
break;
};
};
if (move < 5 && move > 0) {
if (board [i] [move - 1] === chip && board [i] [move + 1] === chip && board [i] [move + 2] === chip) {
redraw();
alert("Congratulations! " + whoseturn + " Wins the Game!");
gamefinished = 1;
break;
};
};
if (move < 6 && move > 1) {
if (board [i] [move - 2] === chip && board [i] [move - 1] === chip && board [i] [move + 1] === chip) {
redraw();
alert("Congratulations! " + whoseturn + " Wins the Game!");
gamefinished = 1;
break;
};
};
if (move > 2) {
if (board [i] [move - 3] === chip && board [i] [move - 2] === chip && board [i] [move - 1] === chip) {
redraw();
alert("Congratulations! " + whoseturn + " Wins the Game!");
gamefinished = 1;
break;
};
};
//vertical
if (i < 3){
if (board [i + 1] [move] === chip && board [i + 2] [move] === chip && board [i + 3] [move] === chip) {
redraw();
alert("Congratulations! " + whoseturn + " Wins the Game!");
gamefinished = 1;
break;
};
};
//diagonal up-right
if (move < 4 && i > 2) {
if (board [i - 1] [move + 1] === chip && board [i - 2] [move + 2] === chip && board [i - 3] [move + 3] === chip) {
redraw();
alert("Congratulations! " + whoseturn + " Wins the Game!");
gamefinished = 1;
break;
};
};
if (move < 5 && move > 0 && i < 5 && i > 1) {
if (board [i + 1] [move - 1] === chip && board [i - 1] [move + 1] === chip && board [i - 2] [move + 2] === chip) {
redraw();
alert("Congratulations! " + whoseturn + " Wins the Game!");
gamefinished = 1;
break;
};
};
if (move < 6 && move > 1 && i < 4 && i > 0) {
if (board [i + 2] [move - 2] === chip && board [i + 1] [move - 1] === chip && board [i - 1] [move + 1] === chip) {
redraw();
alert("Congratulations! " + whoseturn + " Wins the Game!");
gamefinished = 1;
break;
};
};
if (move > 2 && i < 3) {
if (board [i + 3] [move - 3] === chip && board [i + 2] [move - 2] === chip && board [i + 1] [move - 1] === chip) {
redraw();
alert("Congratulations! " + whoseturn + " Wins the Game!");
gamefinished = 1;
break;
};
};
//diagonal down-right
if (move > 4 && i < 3) {
if (board [i + 1] [move + 1] === chip && board [i + 2] [move + 2] === chip && board [i + 3] [move + 3] === chip) {
redraw();
alert("Congratulations! " + whoseturn + " Wins the Game!");
gamefinished = 1;
break;
};
};
if (move < 5 && move > 0 && i < 4 && i > 0) {
if (board [i + 1] [move + 1] === chip && board [i + 2] [move + 2] === chip && board [i - 1] [move - 1] === chip) {
redraw();
alert("Congratulations! " + whoseturn + " Wins the Game!");
gamefinished = 1;
break;
};
};
if (move < 6 && move > 1 && i < 5 && i > 1) {
if (board [i - 2] [move - 2] === chip && board [i + 1] [move + 1] === chip && board [i - 1] [move - 1] === chip) {
redraw();
alert("Congratulations! " + whoseturn + " Wins the Game!");
gamefinished = 1;
break;
};
};
if (move > 2 && i > 2) {
if (board [i - 3] [move - 3] === chip && board [i - 2] [move - 2] === chip && board [i - 1] [move - 1] === chip) {
redraw();
alert("Congratulations! " + whoseturn + " Wins the Game!");
gamefinished = 1;
break;
};
};
//display
redraw();
//switch turns
if (whoseturn === "Red"){
whoseturn = "Black";
}
else {
whoseturn = "Red"
}
document.write("</pre>");
};
function redraw(){
document.body.innerHTML = "";
document.write("<pre>");
for(var i = 0; i <= 5; i++) {
for (var j = 0; j <= 6; j++){
if(board[i][j] !== " "){
document.write(board[i][j] + " ");
};
};
document.write("<br> <br>");
};
};