用JavaScript中的随机数填充二维数组 [英] Filling up a 2D array with random numbers in javascript
问题描述
非常抱歉,如果以前曾在此处发布过类似信息,但我找不到任何信息,我还是该网站的新手!
I'm really sorry if anything like this has been posted here before but I couldn't find anything, I'm kinda new to the site still!
所以一段时间以来,我一直在学习一些通过html5和javascript进行游戏开发的知识,偶然发现了tilelet地图,现在我拥有了tileet和2D我要放入特定图块的数组(在这种情况下,数字在6到10之间变化)。
我认为这可能是一个很酷的功能,可以让地图在一小组相似的图块之间进行选择,因此我不必专门为数组中的每个图块编号(只需定义类型)
So for a while now I've been learning a bit about game development through html5 and javascript and I stumbled upon making tileset maps, I now have a tileset and an 2D array that I want to put certain tiles in (the number varies between 6 and 10 in this case). I figured it could be a cool function to make the map choose between a small set of similar tiles so I don't have to specifically number every tile in the array(just define the type)
我目前拥有的方法可能是能够定义类型的最佳方法,但是我想要看起来更干净的东西和/或有关为什么我的更干净版本无法正常工作的信息。 / p>
The method I have currently is probably the best for being able to define types but I want something that looks a bit cleaner and/or information to why my "cleaner" version dosen't work.
var ground = [
[tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile()],
[tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile()],
[tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile()],
[tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile()],
[tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile()],
[tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile()],
[tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile()],
[tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile()],
[tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile(),tile()]];
function tile() {
var y = (Math.random() * 5 | 0) + 6;
return y;
}
这是我到目前为止一直在使用的代码,我必须进行编辑每个带有tile()函数的代码元素都将获得一个随机数,我想要的是这样的:
This is the code I've been using so far, I have to edit every element of the code with the tile() function to get a random number in each one, what I wanted to have was something like this:
for (var i = 0 ; i < 15; i++) {
for (var j = 0; j < 9; j++) {
ground[[i],[j]] = (Math.random() * 5 | 0) + 6;
}
}
无需添加函数即可填充数组每个点。
to fill the array without having to add the function to each spot.
我觉得我缺少返回函数或类似的东西,但老实说我不知道。
I have a feeling that I'm missing a return function or something along those lines but honestly I have no idea.
推荐答案
您在朝着正确的方向思考,但是您的代码中存在一些错误;)
You were thinking in the right direction but there are some errors in your code ;)
- 必须先初始化数组,然后才能将元素压入数组。
- 并且您在计算i ++的次数两次
JavaScript
Javascript
var ground = []; // Initialize array
for (var i = 0 ; i < 15; i++) {
ground[i] = []; // Initialize inner array
for (var j = 0; j < 9; j++) { // i++ needs to be j++
ground[i][j] = (Math.random() * 5 | 0) + 6;
}
}
也许更好(可重用)
function createGround(width, height){
var result = [];
for (var i = 0 ; i < width; i++) {
result[i] = [];
for (var j = 0; j < height; j++) {
result[i][j] = (Math.random() * 5 | 0) + 6;
}
}
return result;
}
// Create a new ground with width = 15 & height = 9
var ground = createGround(15, 9);
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