h = 24
w = 24
range = 256

int pathing[h,w];
int doneflag = 0;

for(xx=0; xx<w; xx++) {
  for(yy=0; yy<h; yy++) {
    pathing[xx,yy] = range;
  }
}

pathing[player.x/8, player.y/8] = 0;

while (doneflag == 0) {

doneflag = 1;

for(xx=0; xx<w; xx++) {
  for(yy=0; yy<h; yy++) {

     if(pathing[xx,yy] < range) {
       if(pathing[xx-1,yy] == range && ds_grid_get(global.mainGrid,xx-1,yy) == 0) {pathing[xx-1,yy]=pathing[xx,yy]+1; doneflag=0;}
       if(pathing[xx+1,yy] == range && ds_grid_get(global.mainGrid,xx+1,yy) == 0) {pathing[xx+1,yy]=pathing[xx,yy]+1; doneflag=0;}
       if(pathing[xx,yy-1] == range && ds_grid_get(global.mainGrid,xx,yy-1) == 0) {pathing[xx,yy-1]=pathing[xx,yy]+1; doneflag=0;}
       if(pathing[xx,yy+1] == range && ds_grid_get(global.mainGrid,xx,yy+1) == 0) {pathing[xx,yy+1]=pathing[xx,yy]+1; doneflag=0;}
        }
    }
}

for(xx=w-1; xx>=0; xx--) {
  for(yy=h-1; yy>=0; yy--) {

     if(pathing[xx,yy] < range) {
       if(pathing[xx-1,yy] == range && ds_grid_get(global.mainGrid,xx-1,yy) == 0) {pathing[xx-1,yy]=pathing[xx,yy]+1; doneflag=0;}
       if(pathing[xx+1,yy] == range && ds_grid_get(global.mainGrid,xx+1,yy) == 0) {pathing[xx+1,yy]=pathing[xx,yy]+1; doneflag=0;}
       if(pathing[xx,yy-1] == range && ds_grid_get(global.mainGrid,xx,yy-1) == 0) {pathing[xx,yy-1]=pathing[xx,yy]+1; doneflag=0;}
       if(pathing[xx,yy+1] == range && ds_grid_get(global.mainGrid,xx,yy+1) == 0) {pathing[xx,yy+1]=pathing[xx,yy]+1; doneflag=0;}
        }
    }
}

}