game/shared/dimension.hh


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#ifndef SHARED_DIMENSION_HH
#define SHARED_DIMENSION_HH 1
#pragma once

#include "shared/const.hh"
#include "shared/types.hh"

class Chunk;
class Config;
class VoxelStorage;

using dimension_entropy_map = std::array<std::uint64_t, CHUNK_AREA>;
using dimension_height_map = std::array<voxel_pos::value_type, CHUNK_AREA>;

class Dimension {
public:
    explicit Dimension(const char *name, float gravity);
    virtual ~Dimension(void);

    const char *get_name(void) const;
    float get_gravity(void) const;

public:
    Chunk *create_chunk(const chunk_pos &cpos);
    Chunk *find_chunk(entt::entity entity) const;
    Chunk *find_chunk(const chunk_pos &cpos) const;

    void remove_chunk(entt::entity entity);
    void remove_chunk(const chunk_pos &cpos);
    void remove_chunk(Chunk *chunk);

public:
    voxel_id get_voxel(const voxel_pos &vpos) const;
    voxel_id get_voxel(const chunk_pos &cpos, const local_pos &lpos) const;

    bool set_voxel(voxel_id voxel, const voxel_pos &vpos);
    bool set_voxel(voxel_id voxel, const chunk_pos &cpos, const local_pos &lpos);

public:
    virtual void init(Config &config);
    virtual void init_late(std::uint64_t global_seed);
    virtual bool generate(const chunk_pos &cpos, VoxelStorage &voxels);

public:
    entt::registry chunks;
    entt::registry entities;

private:
    std::string m_name;
    emhash8::HashMap<chunk_pos, Chunk *> m_chunkmap;
    float m_gravity;
};

struct ChunkComponent final {
    chunk_pos cpos;
    Chunk *chunk;
};

struct ChunkCreateEvent final {
    Dimension *dimension;
    chunk_pos cpos;
    Chunk *chunk;
};

struct ChunkDestroyEvent final {
    Dimension *dimension;
    chunk_pos cpos;
    Chunk *chunk;
};

struct ChunkUpdateEvent final {
    Dimension *dimension;
    chunk_pos cpos;
    Chunk *chunk;
};

struct VoxelSetEvent final {
    Dimension *dimension;
    chunk_pos cpos;
    local_pos lpos;
    voxel_id voxel;
    Chunk *chunk;
};

#endif /* SHARED_DIMENSION_HH */