help

function pierwsza(){
        var i = setInterval(function(){
            var gBCRbacteria1 = bacteria1.getBoundingClientRect();
            bacteria1.style.top = `${counter3}px`;
            counter3++;
            if(counter3 === 600) {
                bacteria1.style.backgroundColor = 'white';
                clearInterval(i);
            }
        }, 10);
        }
function druga(){
            var counter2 = 590;
            var i = setInterval(function(){
                var gBCRammo = ammo.getBoundingClientRect();

                ammo.style.top = `${counter2-2}px`;
                counter2--;
                if(counter2 === offsettopgame) {
                    ammo.style.backgroundColor = '';
                    clearInterval(i);
                }
            }, 1);
}
  if(colision(gBCRammo,gBCRbacteria1 )){
                    console.log('yeeeeeeeeeeeeeeeeeeS')
                }