public void checker(){
    int chekerEmptyCellNum=0;
    for (int y=0; y<Drawer.DIMENSION;y++){              //Checking all rows
        for (int x=0; x<Drawer.DIMENSION;x++){          //run for row   rightleft
            if (Drawer.field[y][x]==Drawer.CELL){
                chekerEmptyCellNum++;                         //increment if empty field appears
            }
        }
    }
    if (chekerEmptyCellNum>0){                           //repeat cycle for x to fill line
        for (int i=0; i<Drawer.DIMENSION; i++) {
            for (int j=0; j<Drawer.DIMENSION; j++) {
                Drawer.field[i][j] = Drawer.field2[i][j];
            }
        }    
        shiftGlob++;
//        Sleep.pause(2000);
            
        
    }
    }