Question

我正在编写一个脚本，在更大的地图中生成一个方形房间。代码如下所示：

var mapSize = 10;
var map = [];
for (var x = 0; x < mapSize; x++) {
    map[x] = [];
    for (var y = 0; y < mapSize; y++) {
        map[x][y] = 0
        };
    };
//Make square room within map
var roomSize = 3;
var roomType = "Kitchen"
var paintRoom = function(mapX, mapY) {
    for (var j = 0; j < roomSize; j++) {
      map[mapX + j][mapY] = roomType;
      map[mapX][mapY + j] = roomType;
    };
};
paintRoom(3, 4);
console.log(map);

我想要的结果是：

[
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, "Kitchen", "Kitchen", "Kitchen", 0, 0, 0], 
  [0, 0, 0, 0, "Kitchen", "Kitchen", "Kitchen", 0, 0, 0], 
  [0, 0, 0, 0, "Kitchen", "Kitchen", "Kitchen", 0, 0, 0], 
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
]

但我最终得到了这个：

[
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, "Kitchen", "Kitchen", "Kitchen", 0, 0, 0], 
  [0, 0, 0, 0, "Kitchen", 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, "Kitchen", 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
  [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
]

我在这里缺少什么？我刚刚开始，想尽可能地自己弄清楚，所以如果有人能给我一个提示而不是直接回答，我会非常感激。

Answer 1

如果您仔细遵循代码，它就会按照您的要求进行操作。它只需要一个额外的循环。既然你正在做的是2维，那么你也需要2个循环......

x <- data.frame(v1=1:5,v2=1:5,v3=1:5,
            v4=c("Bob","Green","Curley","Banana","No"), 
            v5=c("Hello","This question is awful, Mad",NA,"Help","Me"),
            stringsAsFactors = FALSE)

x <- data.frame(lapply(x, function(i) if(is.character(i)) ifelse(!is.na(i), "N", i) else i))

Answer 2

你错过了一个循环：

var mapSize = 10;
var map = [];
for (var x = 0; x < mapSize; x++) {
    map[x] = [];
    for (var y = 0; y < mapSize; y++) {
        map[x][y] = 0
        };
    };
//Make square room within map
var roomSize = 3;
var roomType = "Kitchen"
var paintRoom = function(mapX, mapY) {
    for (var j = 0; j < roomSize; j++) {
      for (var k = 0; k < roomSize; k++) {
         map[mapX + j][mapY + k] = roomType;
      }
    };
};
paintRoom(3, 4);
console.log(map);

https://jsfiddle.net/nfnpesmd/

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2 个答案: