프로세싱을 하는중인데 벽돌을 누르면 상하좌우가 다없어져야해야되는데

bricks[mouseY/20][mouseX/50]=0;
      bricks[(mouseY-2)/20][(mouseX-50)/50]=0;
      bricks[(mouseY+20)/20][(mouseX+5)/50]=0;
      bricks[(mouseY-20)/20][(mouseX+5)/50]=0;

까지하고 발전이없네요 도와주세요 ㅠㅠ

 

int [][] bricks= new int [20][10];

void setup()
{
  int i,j;
 
  size(500,400);
 
  for(i=0; i<20;i++)
  for(j=0; j<10; j++)
  {
    bricks[i][j]=1;
  }
}
void draw()
{
  int i,j;
 
  background(0);
 
  for(i=0;i<20;i++)
  for(j=0;j<10;j++)
  {
    if (bricks[i][j]==1) fill(255);
    else fill(0);
   
    rect(j*50,i*20,50,20);
  }
  if(mousePressed)
  {
    if(bricks[mouseY/20][mouseX/50]==1)
    {
      bricks[mouseY/20][mouseX/50]=0;
      bricks[(mouseY-2)/20][(mouseX-50)/50]=0;
      bricks[(mouseY+20)/20][(mouseX+5)/50]=0;
      bricks[(mouseY-20)/20][(mouseX+5)/50]=0;
     
     
    }
  }
}

원문입니당