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I managed to separate each level into a scene. That makes it possible to bake light and occlusion into the scene. I had some problems learning which parameters work best.
The baking time was a marginal issue because my own computer only has a GTX1080 installed.
The next problem to solve was the sheer size of the level. The initial lightmap for FireboundForge had a size of 5GB. But overall, I’m satisfied with the results.
In this video, you can see the comparison between old and new.
The BloodshedArena has directional light from the sun.
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SludgeMadness now has a dusky atmosphere.
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Additionally, I added the Training Ground where, you can experiment with builds and spells.
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There is also a complete overhaul of my blog/product page of Raiding-Zone. The web version of the game is now available at https://play.raiding.zone.