C_objSpriteCluster.hpp

/*
 * Copyright 2024 Guillaume Guillet
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef _FGE_C_OBJSPRITECLUSTER_HPP_INCLUDED
#define _FGE_C_OBJSPRITECLUSTER_HPP_INCLUDED
 
#include "FastEngine/fge_extern.hpp"
#include "C_object.hpp"
#include "FastEngine/accessor/C_texture.hpp"
#include "FastEngine/extra/extra_function.hpp"
 
#define FGE_OBJSPRITECLUSTER_CLASSNAME "FGE:OBJ:SPRITECLUSTER"
 
namespace fge
{
 
class FGE_API ObjSpriteCluster : public fge::Object
{
public:
    ObjSpriteCluster();
    ObjSpriteCluster(ObjSpriteCluster const& r);
    explicit ObjSpriteCluster(fge::Texture texture);
 
    FGE_OBJ_DEFAULT_COPYMETHOD(fge::ObjSpriteCluster)
 
    void setTexture(fge::Texture texture);
 
    void clear();
    void addSprite(fge::RectInt const& rectangle, fge::Vector2f const& offset = {0.0f, 0.0f});
    void resize(std::size_t size);
    void setTextureRect(std::size_t index, fge::RectInt const& rectangle);
    void setColor(std::size_t index, fge::Color const& color);
    void setOffset(std::size_t index, fge::Vector2f const& offset);
 
    fge::Texture const& getTexture() const;
 
    [[nodiscard]] std::optional<fge::RectInt> getTextureRect(std::size_t index) const;
    [[nodiscard]] std::optional<fge::Color> getColor(std::size_t index) const;
    [[nodiscard]] std::optional<fge::Vector2f> getOffset(std::size_t index) const;
 
    FGE_OBJ_DRAW_DECLARE
 
    void save(nlohmann::json& jsonObject, fge::Scene* scene) override;
    void load(nlohmann::json& jsonObject, fge::Scene* scene) override;
    void pack(fge::net::Packet& pck) override;
    void unpack(fge::net::Packet const& pck) override;
 
    char const* getClassName() const override;
    char const* getReadableClassName() const override;
 
    [[nodiscard]] fge::RectFloat getGlobalBounds() const override;
    [[nodiscard]] std::optional<fge::RectFloat> getGlobalBounds(std::size_t index) const;
    [[nodiscard]] fge::RectFloat getLocalBounds() const override;
    [[nodiscard]] std::optional<fge::RectFloat> getLocalBounds(std::size_t index) const;
 
private:
    void updatePositions(std::size_t index);
    void updateTexCoords(std::size_t index);
 
    struct InstanceData
    {
        InstanceData() = default;
        explicit InstanceData(fge::RectInt const& textureRect, fge::Vector2f const& offset) :
                _offset(offset),
                _textureRect(textureRect)
        {}
 
        fge::Vector2f _offset;
        fge::RectInt _textureRect;
    };
 
    fge::Texture g_texture;
 
    std::vector<InstanceData> g_instancesData;
    fge::vulkan::VertexBuffer g_instancesVertices;
};
 
} // namespace fge
 
#endif // _FGE_C_OBJSPRITECLUSTER_HPP_INCLUDED