#pragma once

#include <Engine/Class.h>

typedef void*  DerivedType;
typedef uint64 EntityID;

#define kInvalid_user_id          ((uint8)0U)
#define kInvalid_entity_id        ((EntityID)0ULL)
#define kEntityID_user_id_shift   ((EntityID)56ULL)
#define kEntityID_user_id_mask    ((EntityID)0xFF00000000000000ULL)

// clang-format off
#define ENTITY_TYPE_LIST(X) X(Inert),

typedef uint8 Entity_Type;
#define AS_ENUM(name) Entity_Type_##name
enum
{
    ENTITY_TYPE_LIST(AS_ENUM)
    Entity_Type_Count
};
#undef AS_ENUM

extern const char*  kEntity_type_names[];
extern const Class* kEntity_type_class_ptr[];

#define ENTITY(kind) ((uint8)Entity_Type_##kind)
// clang-format on

typedef struct Entity Entity;

#define DECLARE_ENTITY() Entity* base;

#define DEFINE_ENTITY_VERSIONED(entity, version_num)   \
    const Class class_kind_##entity = {                \
        .Name           = ConstString(#entity),        \
        .kind           = (uint8)Entity_Type_##entity, \
        .version        = (version_num),               \
        .base_class     = &class_kind_Entity,          \
        .initialize_fct = init_##entity,               \
        .serialize_fct  = serialize_##entity,          \
        .size_of        = sizeof(entity),              \
        .alignment      = AlignOf(entity)              \
    };

// Note: Needed by every entity class (see define above)
extern const Class class_kind_Entity;