25:["$","title",null,{"children":"Game of Life | Woo-Mi Jeong | Observable"}] 49:T7f9,cells = { //array to save all cells once we create them let cells = []; //loop through rows and columns for (let y = 0; y < rows; y++) { for (let x = 0; x < columns; x++) { //placeholder variables, assuming we have all neighbors let above, below, left, right, aboveLeft, aboveRight, belowLeft, belowRight; //calculate indices of possible neighbors if (y > 0) { above = (y - 1) * columns + x; } if (y < rows - 1) { below = (y + 1) * columns + x; } if (x > 0) { left = y * columns + (x - 1); } if (x < columns - 1) { right = y * columns + (x + 1); } if (y > 0 && x > 0) { aboveLeft = (y - 1) * columns + (x - 1); } if (y > 0 && x < columns - 1) { aboveRight = (y - 1) * columns + (x + 1); } if (y < rows - 1 && x > 0) { belowLeft = (y + 1) * columns + (x - 1); } if (y < rows - 1 && x < columns - 1) { belowRight = (y + 1) * columns + (x + 1); } //for humans to view and debug, not necessary for simulation const neighbors = { above, below, right, left, aboveLeft, aboveRight, belowLeft, belowRight }; //array of neighbors to check each simulation step //the filter at the end removes any neighbor that is not defined above const neighborhood = [ above, below, right, left, aboveLeft, aboveRight, belowLeft, belowRight ].filter((index) => Number.isInteger(index)); //create new cell based on all the data defined above let cell = { column: x, row: y, neighbors, neighborhood, history: 0, alive: Math.random() < .5, //generates either a 0 or 1 survive: 0 }; //"save" cell to array of cells cells.push(cell); } } return cells; }4a:T41a,simulation = { while(true){ for (let i = 0; i < rows * columns; ++i) { let cell = cells[i]; let livingNeighbors = 0; //who are cell's neighbors for(let n=0 ; n