scroller.hpp

超级玛丽

//-------------------------------------------------------------------------------------
//
// This is part of MarioDemo, a platformer demo for JGE++
// 
// Copyright (C) 2006 James Hui (a.k.a. Dr.Watson)
// 
// 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 (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, write to the Free Software Foundation, Inc., 59 Temple
// Place, Suite 330, Boston, MA 02111-1307 USA
// 
// Bugs and comments can be forwarded to [e-mail]. 
// 
//-------------------------------------------------------------------------------------

#ifndef _SCROLLER_HPP_
#define _SCROLLER_HPP_


class Scroller
{
private:
	float mX;
	float mY;

	float mTexWidth;
	float mTexHeight;
	float mTexX;
	float mTexY;

	JQuad* mQuad;

protected:
	static JGE* mEngine;

public:
	Scroller(JQuad *quad);
	~Scroller();
	void Render(float x, float y);
};


JGE* Scroller::mEngine = NULL;

Scroller::Scroller(JQuad *quad): mQuad(quad)
{
	mX = 0.0f;
	mY = 0.0f;

	quad->GetTextureRect(&mTexX, &mTexY, &mTexWidth, &mTexHeight);
	
	mEngine = JGECreate();
}


Scroller::~Scroller()
{
	JGERelease();
}


void Scroller::Render(float x, float y)
{
//	float width = mTexWidth;
//	if (x+width > SCREEN_WIDTH_F)
//		width = SCREEN_WIDTH_F - x;

	mQuad->SetTextureRect(x, mTexY, x+512.0f, mTexHeight);
	mEngine->RenderQuad(mQuad, 0.0f, y);

//	float width2 = SCREEN_WIDTH_F - width;
//	if (width2 > 0.0f)
//	{
//		mQuad->SetTextureRect(0.0f, mTexY, width2+1.0f, mTexHeight);
//		mEngine->RenderQuad(mQuad, width, y);
//	}

}


#endif