so basically, the problem is that the barrel in the opposite corner is detonated 3 times. this is caused by the two barrels next to it detonating at the same time and the initially shot barrel's explosion travelling and hitting the barrel around the same time as the barrels next to it detonate. (at least i hope thats the issue)
so I wanna know any tips on how to make sure each barrel only detonates once, even when hit at the same time.