#include "Lighting.hpp"

namespace MC::World::Generation::Lighting {

void light_chunk(Chunk& chunk, ChunkNeighbors& _) {
    for (UInt x = 0; x < Chunk::Width; x++) {
        for (UInt z = 0; z < Chunk::Width; z++) {
            U8 current_light_exposure = LightSun;
            for (UInt y = Chunk::Height - 1; y != 0; y--) {
                auto& block = chunk.at(x, y, z);
                if (!block.type.is_translucent()) break;

                current_light_exposure = (Real)current_light_exposure * (1 - block.type.opacity());
                block.light = current_light_exposure;
            }
        }
    }
}

}