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#pragma once
#include "compat/defs.hpp"
#include "src/global-coords.hpp"
#include "src/rotation.hpp"
#include "src/pass-mode.hpp"
#include <memory>
#include <vector>
namespace floormat {
template<typename T> struct entity_type_;
struct anim_atlas;
struct world;
enum class entity_type : std::uint8_t {
none, character, scenery,
};
struct entity_proto
{
std::shared_ptr<anim_atlas> atlas;
Vector2b offset, bbox_offset;
Vector2ub bbox_size = Vector2ub(iTILE_SIZE2);
std::uint16_t delta = 0, frame = 0;
entity_type type = entity_type::none;
rotation r : rotation_BITS = rotation::N;
pass_mode pass : pass_mode_BITS = pass_mode::see_through;
std::uint32_t ordinal(local_coords coord) const;
entity_proto& operator=(const entity_proto&);
entity_proto();
entity_proto(const entity_proto&);
bool operator==(const entity_proto&) const;
virtual ~entity_proto() noexcept;
};
struct entity
{
fm_DECLARE_DELETED_COPY_ASSIGNMENT(entity);
using It = typename std::vector<std::shared_ptr<entity>>::const_iterator;
const std::uint64_t id = 0;
world& w;
std::shared_ptr<anim_atlas> atlas;
global_coords coord;
Vector2b offset, bbox_offset;
Vector2ub bbox_size;
std::uint16_t delta = 0, frame = 0;
const entity_type type;
rotation r : rotation_BITS = rotation::N;
pass_mode pass : pass_mode_BITS = pass_mode::see_through;
virtual ~entity() noexcept;
std::uint32_t ordinal() const;
static std::uint32_t ordinal(local_coords xy, Vector2b offset);
struct chunk& chunk() const;
It iter() const;
virtual bool operator==(const entity_proto& e0) const;
operator entity_proto() const;
virtual bool can_activate(It it, struct chunk& c) const;
virtual bool activate(It it, struct chunk& c);
virtual bool update(It it, struct chunk& c, float dt) = 0;
virtual void rotate(It it, struct chunk& c, rotation r);
static Pair<global_coords, Vector2b> normalize_coords(global_coords coord, Vector2b cur_offset, Vector2i delta);
[[nodiscard]] virtual bool can_move_to(Vector2i delta, struct chunk& c);
static void move(It it, Vector2i delta, struct chunk& c);
friend struct world;
protected:
entity(std::uint64_t id, struct world& w, entity_type type) noexcept;
entity(std::uint64_t id, struct world& w, entity_type type, const entity_proto& proto) noexcept;
};
} // namespace floormat
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