1 files changed, 80 insertions, 0 deletions
diff --git a/src/entity.hpp b/src/entity.hpp
new file mode 100644
index 00000000..18c588bd
--- /dev/null
+++ b/src/entity.hpp
@@ -0,0 +1,80 @@
+#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