Part 3: Casting Shadows Without Trigonometry: The Beauty of Integer Math

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At the end of generating a procedural map for the Derelict Facility engine, I had a sprawling interconnected maze of rooms and corridors. But there was a devastating problem: I could see everything. The entire map was rendered at once. It looked like a top-down blueprint, not a dark, atmospheric facility. I needed to implement Fog of War. I needed to treat the player character like a lighthouse in…

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