game of life functional

game_of_life_functional.js

var grid = initGrid(30, 30, 10);
printGrid(grid);
startGame();

function startGame() {

    (function generation(generations) {
        setTimeout(function() {

            var tempGrid = initGrid(30, 30, 10);

            grid.forEach(function(rowArray, row){
              rowArray.forEach(function(value, col){
                if (value == 1 || value == 0) {
                  var neighbors = countNeighbors(row, col);
                  if (value == 1 && (neighbors < 2 || neighbors > 3)) {
                      tempGrid[row][col] = 0; // DIE
                  } else if ((value == 0) && neighbors == 3) {
                      tempGrid[row][col] = 1; // LIVE
                  }
                }
              });
            });


            grid.forEach(function(rowArray, row){
              rowArray.forEach(function(value, col){
                grid[row][col] = tempGrid[row][col];
              });
            });

            printGrid(grid);
            if (--generations) generation(generations);
        }, 150)
    })(30000);

    function countNeighbors(row, col) {
        var neighbors = 0;
        for (var j = col - 1; j < (col + 2); j++) {
            for (var i = row - 1; i < (row + 2); i++) {
                if (i > 0 && j > 0 && j < grid.length && i < grid.length) {
                    if (grid[i][j] !== undefined)
                        neighbors += grid[i][j];
                }
            }
        }
        return neighbors;
    }
}


function initGrid(rows, cols, randomNumbersQuantity) {
    var grid = [];

    if (randomNumbersQuantity) {
        var randomNumbers = getRandomNumbers(randomNumbersQuantity , []);
    }

    for (var i = 0; i < rows; i++) {
        var row = [];
        for (var j = 0; j < cols; j++) {
            if (i == 0 || i == (rows - 1) || j == (cols - 1) || j == 0) {
                row.push(2); // Set to an edge case of grid
            } else {
                row.push(0);
            }
        }
        grid.push(row);
    }
    if (randomNumbersQuantity > 0) {
        for (var i = 0; i < randomNumbers.length; i++) {
            var numbers = randomNumbers[i];
            grid[numbers.x][numbers.y] = 1;
        }
    } else {
        for (var i = 0; i < rows; i++) {
            for (var j = 0; j < cols; j++) {
                if (grid[i][j] == 0) {
                    /* Linear Lines
                    if (j == 15){
                      if (i >= 2 && i <= 15){
                        grid[i][j] = 1;
                        grid[i+9][j] = 1;
                        grid[i+15][j] = 1;
                      }
                    }

                    if (j == 10){
                      if (i >= 2 && i <= 15){
                        grid[i][j] = 1;
                        grid[i+9][j] = 1;
                        grid[i+15][j] = 1;
                      }
                    }
                    if (j == 5){
                      if (i >= 2 && i <= 15){
                        grid[i][j] = 1;
                        grid[i+9][j] = 1;
                        grid[i+15][j] = 1;
                      }
                    }

                    if (j == 20){
                      if (i >= 2 && i <= 15){
                        grid[i][j] = 1;
                        grid[i+9][j] = 1;
                        grid[i+15][j] = 1;
                      }
                    } */

                    /* Talking Face */
                    if (i == 14) {
                        if (j > 10 && j < 20) {
                            grid[i][j] = 1;
                        }
                    }

                    if (j == 10) {
                        if (i >= 8 && i <= 10) {
                            grid[i][j] = 1;
                        }
                    }

                    if (j == 15) {
                        if (i >= 8 && i <= 10) {
                            grid[i][j] = 1;
                        }
                    }

                    if (j == 20) {
                        if (i >= 8 && i <= 10) {
                            grid[i][j] = 1;
                        }
                    }

                }
            }
        }
    }

    return grid;

    function getRandomNumbers(numbers, randomNumbers) {

      if (numbers == 0) {
        return randomNumbers;
      }else{
        var Numbers = {};
        Numbers.x = Math.floor(Math.random() * 29) + 1;
        Numbers.y = Math.floor(Math.random() * 29) + 1;

        var filtered = randomNumbers.filter(function(object,index, array){
          var exist = false;
          var count = 0;
          array.forEach(function(obj){
              if (object.x == obj.x && object.y == obj.y && count < 2) {
                if (count == 1) {
                    count++;
                    exist = true;
                }else{
                  count++;
                  exist = false;
                }
              }
          });
          if (!exist) {
              return object;
          }
        });
        if (filtered.length === randomNumbers.length) {
            filtered.push(Numbers);
            return getRandomNumbers(numbers - 1, filtered);
        }else{
          return getRandomNumbers(numbers, filtered);
        }
      }
    }
}

function printGrid(grid) {
    for (var i = 0; i < grid.length; i++) {
        var rowData;
        for (var j = 0; j < grid[i].length; j++) {
            if (rowData == undefined)
                rowData = '';
            if (grid[i][j] == 2) {
                if (i == 0 || i == (grid.length - 1))
                    rowData += ' > ';
                else
                    rowData += ' V ';
            } else {
                if (grid[i][j] == 0)
                    rowData += ' . ';
                else
                    rowData += ' * ';
            }
            if (j == grid.length - 1) {
                rowData += '\n'
            }
        }
    }
    console.log(rowData);
}