cube-game-plus-plus/common/world/BlockStorage.h

#ifndef BLOCKSTORAGE_H
#define BLOCKSTORAGE_H

#include "common/block/BlockTypes.h"
#include "common/world/BlockMap.h"

template<int S, int H>
class BlockStorage final {
    static constexpr int SIZE = 1 << S;
    static constexpr int HEIGHT = 1 << H;
    static constexpr int SIZE_MASK = SIZE - 1;

    BlockMap<SIZE * SIZE * HEIGHT, 1> data;

public:

    BlockStorage() : data(0) {
    }

    BlockId get(int x, int y, int z) const {
        if(y < 0 || y >= HEIGHT) {
            return 0;
        }
        x &= SIZE_MASK;
        z &= SIZE_MASK;
        return data.get(x * SIZE * SIZE + y * SIZE + z);
    }

    void set(int x, int y, int z, BlockId id) {
        data.set(x * SIZE * SIZE + y * SIZE + z, id);
    }

    constexpr int getSize() const {
        return SIZE;
    }

    constexpr int getHeight() const {
        return HEIGHT;
    }
};

#endif