explodingimage.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef STARK_VISUAL_EXPLODING_IMAGE_H
#define STARK_VISUAL_EXPLODING_IMAGE_H

#include "engines/stark/visual/visual.h"

#include "common/array.h"
#include "common/rect.h"

#include "graphics/pixelformat.h"

#include "math/vector2d.h"

namespace Graphics {
struct Surface;
}

namespace Stark {

namespace Gfx {
class Driver;
class SurfaceRenderer;
class Bitmap;
}

class VisualExplodingImage : public Visual {
public:
    static const VisualType TYPE = Visual::kExplodingImage;

    explicit VisualExplodingImage(Gfx::Driver *gfx);
    ~VisualExplodingImage() override;

    void initFromSurface(const Graphics::Surface *surface, uint originalWidth, uint originalHeight);

    void render(const Common::Point &position);

private:
    struct ExplosionUnit {
        ExplosionUnit();

        void setPosition(int x, int y);
        void setExplosionSettings(const Common::Point &center, const Common::Point &amplitude, float scale);
        void setColor(uint32 color, const Graphics::PixelFormat &format);
        void update();
        void draw(Graphics::Surface *surface);

        Math::Vector2d _position;
        Math::Vector2d _speed;
        Math::Vector2d _center;
        float _scale;

        int _stillImageTimeRemaining;
        int _explosionFastAccelerationTimeRemaining;
        uint32 _mainColor;
        uint32 _darkColor;
    };

    Gfx::Driver *_gfx;
    Gfx::SurfaceRenderer *_surfaceRenderer;
    Gfx::Bitmap *_bitmap;
    Graphics::Surface *_surface;

    uint _originalWidth;
    uint _originalHeight;

    Common::Array<ExplosionUnit> _units;
};

} // End of namespace Stark

#endif // STARK_VISUAL_EXPLODING_IMAGE_H