Javascript 如何创建阵列的二维阵列?
我正在做这个任务,我需要构建一个版本的生活游戏。我很难正确设置这个2D数组,以便跟踪细胞是“活的”还是“死的”。我好像撞到墙了,我需要有人帮我找到正确的方向Javascript 如何创建阵列的二维阵列?,javascript,arrays,multidimensional-array,p5.js,conways-game-of-life,Javascript,Arrays,Multidimensional Array,P5.js,Conways Game Of Life,我正在做这个任务,我需要构建一个版本的生活游戏。我很难正确设置这个2D数组,以便跟踪细胞是“活的”还是“死的”。我好像撞到墙了,我需要有人帮我找到正确的方向 var grid; function setup () { createCanvas(400, 400); grid = new Grid(20); } function draw () { background(245); grid.draw(); } class Grid { constructor (cellS
var grid;
function setup () {
createCanvas(400, 400);
grid = new Grid(20);
}
function draw () {
background(245);
grid.draw();
}
class Grid {
constructor (cellSize) {
this.cellSize = cellSize;
this.numberOfColumns = height/this.cellSize;
this.numberOfRows = width/this.cellSize;
this.cells = new Array(this.numberOfColumns);
this.rows = new Array(this.numberOfRows);
this.twoDArray = new Array(this.cells);
for (var i = 0; i < this.cells; i++) {
this.twoDArray[i] = new Array(this.rows);
}
// for (var column = 0; column < this.numberOfColumns; column ++) {
// for (var row = 0; row < this.numberOfRows; row++) {
// this.cells[column][row] = new Cell(column, row, cellSize);
//}
// }
print(this.cells);
}
draw() {
for (var column = 0; column < this.numberOfColumns; column ++) {
for (var row = 0; row < this.numberOfRows; row++) {
fill(240);
noStroke();
rect(column * this.cellSize + 1, row * this.cellSize + 1, this.cellSize - 1, this.cellSize - 1);
}
}
}
}
class Cell {
contructor (column, row, cellSize) {
this.column = column;
this.row = row;
this.cellSize = cellSize;
isAlive = false;
}
}
var网格;
函数设置(){
createCanvas(400400);
网格=新网格(20);
}
函数图(){
背景(245);
grid.draw();
}
类网格{
构造函数(单元大小){
this.cellSize=cellSize;
this.numberOfColumns=高度/this.cellSize;
this.numberOfRows=宽度/this.cellSize;
this.cells=新数组(this.numberOfColumns);
this.rows=新数组(this.numberOfRows);
this.twoDArray=新数组(this.cells);
对于(var i=0;i
每当我尝试取消注释上面注释的代码时,控制台都会说:TypeError:无法设置未定义的“0”属性。我肯定我遗漏了一些明显的东西,但我似乎看不出是什么。如果您能给予任何帮助,我们将不胜感激 您不能将
this.cells
用作多维数组,因为它按照新数组的方式填充了空元素
您应该将代码更改为以下内容:
for (var column = 0; column < this.numberOfColumns; column ++) {
this.cells[column] = []; // or use here new Array or similar
for (var row = 0; row < this.numberOfRows; row++) {
this.cells[column][row] = new Cell(column, row, cellSize);
}
}
for(var column=0;column
您不能将此.cells
用作多维数组,因为它按照新数组的方式填充了空元素
您应该将代码更改为以下内容:
for (var column = 0; column < this.numberOfColumns; column ++) {
this.cells[column] = []; // or use here new Array or similar
for (var row = 0; row < this.numberOfRows; row++) {
this.cells[column][row] = new Cell(column, row, cellSize);
}
}
for(var column=0;column
必须将每一行显式初始化为其自己的新数组。Array()
构造函数只提供一个空数组。您必须显式地将每一行初始化为它自己的新数组。Array()
构造函数只提供一个空数组。