JavaScript 2d 배열이 잘못된 데이터를 반환합니다.

Question

내 게임 맵의 충돌 및 전경 레이어를 나타내는 2 차원 배열이 있습니다. 타일 ​​번호를 읽는 플레이어의 위치에 따라 적절한 타일을 얻으려고합니다. 그러나 배열에서 특정 타일을 호출하면 잘못된 숫자가 반환되거나 Cannot read property 'index here' of undefined이라고 표시됩니다. 플레이어 위치의 인덱스가 0이 아닌 값을 반환해야하지만 0 또는 정의되지 않은 메시지를 반환한다는 것을 배열을 통해 확인했습니다. 여기

if (layers[i]["name"] === "collision") { 
       var colLayer = layers[i]; 
       var tileWidth = colLayer["tilesize"]; 

       x /= tileWidth; 
       y /= tileWidth; 

       var dataArr = colLayer["data"]; 

       console.log("X " + dataArr.length + " Y " + dataArr[0].length) 

       try { 
        console.log(Math.floor(x) + " " + Math.floor(y+1) + " Block num is " + dataArr[Math.floor(y)][Math.floor(x)]); 
        if (dataArr[Math.floor(x)][Math.floor(y)]) 
         return true; 
       } catch (err) { 
        console.log(err); 
       } 
      } 

와 참조 데이터 배열한다 :

"data": [ 
       [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1], 
       [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], 
       [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], 
       [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], 
       [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], 
       [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], 
       [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], 
       [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], 
       [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,12,12,12,12,12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], 
       [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], 
       [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,24,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], 
       [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,24,0,0,0,0,0,0,0,12,12,12,12,12,0,0,0,0,0,0,1], 
       [1,0,0,0,0,0,1,0,0,0,0,0,0,1,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,24,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], 
       [1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,1], 
       [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,1], 
       [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1] 
      ] 

Answer 1

나는 오래 전에 이런 짓을 여기에 내가 타일의 위치를 ​​찾기 위해 사용하고 코드입니다. 우리는 (X, Y) 좌표에 익숙하지만 실제로는 배열 형태로 (Y, X)과 같습니다.

따라서 dataArr[Math.floor(x)][Math.floor(y)]은 dataArr[Math.floor(y)][Math.floor(x)]이어야합니다.

시도해보고 작동하는지 확인하십시오.