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/*
* The Mana Client
* Copyright (C) 2010-2012 The Mana Developers
*
* This file is part of The Mana Client.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef SPRITE_H
#define SPRITE_H
#include "resources/spritedef.h"
class Graphics;
class Image;
// Default frame display delay in milliseconds
const int DEFAULT_FRAME_DELAY = 75;
class Sprite
{
public:
virtual ~Sprite() = default;
/**
* Resets the sprite.
*
* @returns true if the sprite changed, false otherwise
*/
virtual bool reset() = 0;
/**
* Plays an action using the current direction.
*
* @returns true if the sprite changed, false otherwise
*/
virtual bool play(const std::string &action) = 0;
/**
* Inform the animation of the passed time so that it can output the
* correct animation frame.
*
* @returns true if the sprite changed, false otherwise
*/
virtual bool update(int time) = 0;
/**
* Draw the current animation frame at the coordinates given in screen
* pixels.
*/
virtual bool draw(Graphics *graphics, int posX, int posY) const = 0;
/**
* Gets the width in pixels of the image
*/
virtual int getWidth() const = 0;
/**
* Gets the height in pixels of the image
*/
virtual int getHeight() const = 0;
/**
* Gets the horizontal offset that the sprite will be drawn at
*/
virtual int getOffsetX() const
{ return 0; }
/**
* Gets the vertical offset that the sprite will be drawn at
*/
virtual int getOffsetY() const
{ return 0; }
/**
* Returns a reference to the current image being drawn.
*/
virtual const Image *getImage() const = 0;
/**
* Sets the direction.
*
* @returns true if the sprite changed, false otherwise
*/
virtual bool setDirection(SpriteDirection direction) = 0;
/**
* Sets the alpha value of the animated sprite
*/
virtual void setAlpha(float alpha)
{ mAlpha = alpha; }
/**
* Returns the current alpha opacity of the animated sprite.
*/
virtual float getAlpha() const
{ return mAlpha; }
/**
* Returns the duration of the current sprite animation in milliseconds.
*/
virtual int getDuration() const = 0;
protected:
float mAlpha = 1.0f; /**< The alpha opacity used to draw */
};
#endif // SPRITE_H
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