clouds.h

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/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
This program 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 program 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 program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
 
#pragma once
 
#include "irrlichttypes_extrabloated.h"
#include <iostream>
#include "constants.h"
#include "cloudparams.h"
 
// Menu clouds
class Clouds;
extern Clouds *g_menuclouds;
 
// Scene manager used for menu clouds
namespace irr{namespace scene{class ISceneManager;}}
extern irr::scene::ISceneManager *g_menucloudsmgr;
 
class Clouds : public scene::ISceneNode
{
public:
    Clouds(scene::ISceneManager* mgr,
            s32 id,
            u32 seed
    );
 
    ~Clouds();
 
    /*
        ISceneNode methods
    */
 
    virtual void OnRegisterSceneNode();
 
    virtual void render();
 
    virtual const aabb3f &getBoundingBox() const
    {
        return m_box;
    }
 
    virtual u32 getMaterialCount() const
    {
        return 1;
    }
 
    virtual video::SMaterial& getMaterial(u32 i)
    {
        return m_material;
    }
 
    /*
        Other stuff
    */
 
    void step(float dtime);
 
    void update(const v3f &camera_p, const video::SColorf &color);
 
    void updateCameraOffset(const v3s16 &camera_offset)
    {
        m_camera_offset = camera_offset;
        updateBox();
    }
 
    void readSettings();
 
    void setDensity(float density)
    {
        m_params.density = density;
        // currently does not need bounding
    }
 
    void setColorBright(const video::SColor &color_bright)
    {
        m_params.color_bright = color_bright;
    }
 
    void setColorAmbient(const video::SColor &color_ambient)
    {
        m_params.color_ambient = color_ambient;
    }
 
    void setHeight(float height)
    {
        m_params.height = height; // add bounding when necessary
        updateBox();
    }
 
    void setSpeed(v2f speed)
    {
        m_params.speed = speed;
    }
 
    void setThickness(float thickness)
    {
        m_params.thickness = thickness;
        updateBox();
    }
 
    bool isCameraInsideCloud() const { return m_camera_inside_cloud; }
 
    const video::SColor getColor() const { return m_color.toSColor(); }
 
private:
    void updateBox()
    {
        float height_bs    = m_params.height    * BS;
        float thickness_bs = m_params.thickness * BS;
        m_box = aabb3f(-BS * 1000000.0f, height_bs - BS * m_camera_offset.Y, -BS * 1000000.0f,
                BS * 1000000.0f, height_bs + thickness_bs - BS * m_camera_offset.Y, BS * 1000000.0f);
    }
 
    bool gridFilled(int x, int y) const;
 
    video::SMaterial m_material;
    aabb3f m_box;
    u16 m_cloud_radius_i;
    bool m_enable_3d;
    u32 m_seed;
    v3f m_camera_pos;
    v2f m_origin;
    v3s16 m_camera_offset;
    video::SColorf m_color = video::SColorf(1.0f, 1.0f, 1.0f, 1.0f);
    CloudParams m_params;
    bool m_camera_inside_cloud = false;
 
};