I've spent a lot of time working with perlin/simplex noise for different styles of map gen, but I'm having a hard time finding advice/resources on how to populate the map with "world decor" that have some patterns to them... not just a random flower or tree.
I can control where on the map they spawn based on the height/temp values, but what are some good ways to control "patterns" the items spawn in?
For example, I want a specific plant to always spawn in clusters, but I want it to look natural and random - a bunch all together in a cluster and some individuals further out. I don't want all spawn instances to look the same.
A good reference is the Minecraft ore spawner - they're always in random configurations with some min/max size variations. Larger veins are even more rare.