yes, that will be a fast variant.
hmmm... thinking some more I am not sure if it worth to improve speed by this, since in normal case the number of buildings is low. So maybe keep the slow variant, since it is easier to code / less code / less memory usage? But of course slower.
hmmm... thinking some more I am not sure if it worth to improve speed by this, since in normal case the number of buildings is low. So maybe keep the slow variant, since it is easier to code / less code / less memory usage? But of course slower.