lightrenderer.h

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/***************************************************************************
 *   Copyright (C) 2005-2019 by the FIFE team                              *
 *   http://www.fifengine.net                                              *
 *   This file is part of FIFE.                                            *
 *                                                                         *
 *   FIFE is free software; you can redistribute it and/or                 *
 *   modify it under the terms of the GNU Lesser General Public            *
 *   License as published by the Free Software Foundation; either          *
 *   version 2.1 of the License, or (at your option) any later version.    *
 *                                                                         *
 *   This library is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the                 *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
 ***************************************************************************/

#ifndef FIFE_LIGHTRENDERER_H
#define FIFE_LIGHTRENDERER_H

// Standard C++ library includes
#include <vector>

// 3rd party library includes

// FIFE includes
// These includes are split up in two parts, separated by one empty line
// First block: files included from the FIFE root src directory
// Second block: files included from the same folder
#include "model/structures/renderernode.h"
#include "view/rendererbase.h"
#include "video/animation.h"

namespace FIFE {
    class RenderBackend;
    class IFont;

    class LightRendererElementInfo {
    public:
        LightRendererElementInfo(RendererNode n, int32_t src, int32_t dst);
        virtual ~LightRendererElementInfo() {};

        virtual void render(Camera* cam, Layer* layer, RenderList& instances, RenderBackend* renderbackend) = 0;
        virtual std::string getName() = 0;

        RendererNode* getNode() { return &m_anchor; };
        int32_t getSrcBlend() { return m_src; };
        int32_t getDstBlend() { return m_dst; };

        void setStencil(uint8_t stencil_ref);
        int32_t getStencil();
        void removeStencil();

        virtual std::vector<uint8_t> getColor() { return std::vector<uint8_t>(); };
        virtual float getRadius() { return 0; };
        virtual int32_t getSubdivisions() { return 0; };
        virtual float getXStretch() { return 0; };
        virtual float getYStretch() { return 0; };
    
    protected:
        RendererNode m_anchor;
        int32_t m_src;
        int32_t m_dst;
        bool m_stencil;
        uint8_t m_stencil_ref;
    };

    class LightRendererImageInfo : public LightRendererElementInfo {
    public:
        LightRendererImageInfo(RendererNode n, ImagePtr image, int32_t src, int32_t dst);
        virtual ~LightRendererImageInfo() {};

        virtual void render(Camera* cam, Layer* layer, RenderList& instances, RenderBackend* renderbackend);
        virtual std::string getName() { return "image"; };
        ImagePtr getImage() { return m_image; };

    private:
        ImagePtr m_image;
    };

    class LightRendererAnimationInfo : public LightRendererElementInfo {
    public:
        LightRendererAnimationInfo(RendererNode n, AnimationPtr animation, int32_t src, int32_t dst);
        virtual ~LightRendererAnimationInfo() {};

        virtual void render(Camera* cam, Layer* layer, RenderList& instances, RenderBackend* renderbackend);
        virtual std::string getName() { return "animation"; };
        AnimationPtr getAnimation() { return m_animation; };

    private:
        AnimationPtr m_animation;
        uint32_t m_start_time;
        float m_time_scale;
    };

    class LightRendererSimpleLightInfo : public LightRendererElementInfo {
    public:
        LightRendererSimpleLightInfo(RendererNode n, uint8_t intensity, float radius, int32_t subdivisions, float xstretch, float ystretch, uint8_t r, uint8_t g, uint8_t b, int32_t src, int32_t dst);
        virtual ~LightRendererSimpleLightInfo() {};

        virtual void render(Camera* cam, Layer* layer, RenderList& instances, RenderBackend* renderbackend);
        virtual std::string getName() { return "simple"; };

        std::vector<uint8_t> getColor();
        float getRadius() { return m_radius; };
        int32_t getSubdivisions() { return m_subdivisions; };
        float getXStretch() { return m_xstretch; };
        float getYStretch() { return m_ystretch; };

    private:
        uint8_t m_intensity;
        float m_radius;
        int32_t m_subdivisions;
        float m_xstretch;
        float m_ystretch;
        uint8_t m_red;
        uint8_t m_green;
        uint8_t m_blue;
    };

    class LightRendererResizeInfo : public LightRendererElementInfo {
    public:
        LightRendererResizeInfo(RendererNode n, ImagePtr image, int32_t width, int32_t height, int32_t src, int32_t dst);
        virtual ~LightRendererResizeInfo() {};

        virtual void render(Camera* cam, Layer* layer, RenderList& instances, RenderBackend* renderbackend);
        virtual std::string getName() { return "resize"; };

        ImagePtr getImage() { return m_image; };

    private:
        ImagePtr m_image;
        int32_t m_width;
        int32_t m_height;
    };

    class LightRenderer: public RendererBase {
    public:
        LightRenderer(RenderBackend* renderbackend, int32_t position);

        LightRenderer(const LightRenderer& old);

        RendererBase* clone();

        virtual ~LightRenderer();
        void render(Camera* cam, Layer* layer, RenderList& instances);
        std::string getName() { return "LightRenderer"; }

        static LightRenderer* getInstance(IRendererContainer* cnt);

        void addImage(const std::string &group, RendererNode n, ImagePtr image, int32_t src=-1, int32_t dst=-1);
        void addAnimation(const std::string &group, RendererNode n, AnimationPtr animation, int32_t src=-1, int32_t dst=-1);
        void addSimpleLight(const std::string &group, RendererNode n, uint8_t intensity, float radius, int32_t subdivisions, float xstretch, float ystretch, uint8_t r, uint8_t g, uint8_t b, int32_t src=-1, int32_t dst=-1);
        void resizeImage(const std::string &group, RendererNode n, ImagePtr image, int32_t width, int32_t height, int32_t src=-1, int32_t dst=-1);
        void addStencilTest(const std::string &group, uint8_t stencil_ref=0);
        void removeStencilTest(const std::string &group);
        std::list<std::string> getGroups();
        std::vector<LightRendererElementInfo*> getLightInfo(const std::string &group);
        void removeAll(const std::string &group);
        void removeAll();
        void reset();

    private:
        std::map<std::string, std::vector<LightRendererElementInfo*> > m_groups;
    };

}

#endif