The easiest way would be to use an algorithm or a overlay map that can be used to define areas where the engine will place foliage. The down side if these methods is that they leave room for errors, like floating foliage or other glitches like that.
The easiest way would be to use an algorithm or a overlay map that can be used to define areas where the engine will place foliage. The down side if these methods is that they leave room for errors, like floating foliage or other glitches like that.