The grass, leaves, and anything that is light enough within the environment will be affected by this "wind" effect that moves through the environment. It is essentially an invisible wall that passes across the player's immediate area, and has a push affect on the objects that are flagged to be affected by it. This will cause them to sway in a wave as though the wind is moving them.
While this system is very simple, it allows us some other fun options as well. We can have invisible physics effects come off the player as well, so that when you run through tall grass, your projected effects mix with the overall wind effect to make the grass not only come alive, but also to unify the player character with the environment through a sort of indirect interaction.
This wind system is still in it's early stages, so a video of the effect in action might be a little ways off. I'll end this blog post with another few screenshots:
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