summaryrefslogblamecommitdiff
path: root/src/resources/ambientoverlay.h
blob: 8fcb8dc428f705a5801bc5c43b650285affc53e8 (plain) (tree)
1
2
3
4
5
6
7
8
9
10
11

                  
                                                            


                                        
                                                                        



                                                                        
                                                                   




                                                                     
                                                               
                                                                             

   

                                  






                    

                       




                                                                  

                                                          
           
                                                  
                                                                           









                                                        

                                                                   

                                                                         
                                                                                


      
/*
 *  The Mana World
 *  Copyright (C) 2004-2010  The Mana World Development Team
 *
 *  This file is part of The Mana World.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef RESOURCES_AMBIENTOVERLAY_H
#define RESOURCES_AMBIENTOVERLAY_H

class Graphics;
class Image;

class AmbientOverlay
{
    public:
        /**
         * Constructor.
         *
         * @param img       the image this overlay displays
         * @param parallax  scroll factor based on camera position
         * @param speedX    scrolling speed in x-direction
         * @param speedY    scrolling speed in y-direction
         * @param keepRatio  rescale the image to keep
         * the same ratio than in 800x600 resolution mode.
         */
        AmbientOverlay(Image *img, float parallax,
                       float speedX, float speedY, bool keepRatio = false);

        ~AmbientOverlay();

        void update(int timePassed, float dx, float dy);

        void draw(Graphics *graphics, int x, int y);

    private:
        Image *mImage;
        float mParallax;
        float mPosX;              /**< Current layer X position. */
        float mPosY;              /**< Current layer Y position. */
        float mSpeedX;            /**< Scrolling speed in X direction. */
        float mSpeedY;            /**< Scrolling speed in Y direction. */
        bool mKeepRatio;          /**< Keep overlay ratio on every resolution */
};

#endif