I am trying to make a window using a BSP box brush set to subtractive. I am placing it on another BSP box brush and it will not subtract.
The only way for it to work would be if I add a completely new BSP box first, and then add a completely new subtractive one. But even then, it only subtracts the new BSP box and not all the ones I have already placed prior.
Anyone know what’s wrong or what I am doing wrong?
From your screenshot it looks like you have a subtractive brush inside of another subtractive brush. If this is what you are doing then it won’t work. Think about if you took a glass a water and you emptied it. Then you tried to empty it again. There is no water left so there is nothing left inside the glass.
If this is not the case, you will have to build in order for the subtraction to actually take place. Also you need to have an additive brush in order for the subtraction to be taken away.
I recently had this problem as well and I can say something else to look out for is if you’re working with merging different levels into one, make sure that the addition and subtractive brushes in question are made in the same level.
Thank you! I made a copy of my level, and then subtractive failed. Then you mentioned that subtractive is dependant on the level it’s created in. I don’t undetand why subtractive doesn’t work when it issent to another level.
I had the same problem, then @pdcsky said that if the subtractive is not created in the current level, but perhapse copied, then it won’t work. So I just CTR+D to duplicate the subtractive object and voila! It work worked. Su, if your subtractive is not working, then duplicate it and delete the initial subtractive.