jumpingcoin.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 _JUMPING_COIN_HPP_
#define _JUMPING_COIN_HPP_

class JumpingCoin: public GameObject
{
private:
	JSprite* mAnimatedCoin;
	float mAlpha;
	float mAlphaDelta;

	JTexture* mTexture_2;

public:
	JumpingCoin(GameStatePlay* app);
	virtual ~JumpingCoin();

	virtual void Update(float dt);
	virtual void Render();

	void Action(float x, float y);
};


JumpingCoin::JumpingCoin(GameStatePlay* app): GameObject(app)
{
	mTexture_2 = mEngine->LoadTexture("Res/mario_1.png", true);	

	mAnimatedCoin = new JSprite(mTexture_2, 128, 64, 32, 32);

	//mAnimatedCoin->StartAnimation();
	mAnimatedCoin->SetHotSpot(15.0f, 15.0f);
	//mAnimatedCoin->SetDuration(80);
	
	mCurrAnimation = mAnimatedCoin;


	mAlpha = 255.0f;
	
	mXVelocity = 0.0f;
	mYVelocity = 0.0f;

}


JumpingCoin::~JumpingCoin()
{
	
	delete mAnimatedCoin;
}


void JumpingCoin::Update(float dt)
{
	mAlpha -= mAlphaDelta * dt;
	if (mAlpha < 0.0f)
	{
		SetActive(false);
		return;
	}

	float gravity = 0.0003f;//DEFAULT_GRAVITY/2.0f;
	float distance = mYVelocity*dt + gravity*dt*dt/2;
	mYVelocity += gravity*dt;

	mY += distance;
	mCurrAnimation->Update(dt);
}


void JumpingCoin::Render()
{
	float x, y;
	mMap->GetPosition(&x, &y);

	//mCurrAnimation->SetColor(ARGB((int)mAlpha, 255, 255, 255));
	
	mCurrAnimation->SetScale(0.8f, 0.8f);
	mCurrAnimation->SetPosition(mX-x, mY-y + 6.0f);

	//mEngine->EnableTextureFilter(false);
	mCurrAnimation->Render();
	//mEngine->EnableTextureFilter(true);
}


void JumpingCoin::Action(float x, float y)
{
	mX = x;
	mY = y;

	mAlpha = 255.0f;
	mAlphaDelta = mAlpha/1000.0f;	// fade out in 1 seconds
	
	//mXVelocity = 0.0f;
	mYVelocity = -0.16f;

	mCurrAnimation->SetAlpha(255.0f);
	//mCurrAnimation->EnableAlpha(true, -mAlphaDelta);
	mCurrAnimation->StartAnimation();
	
	SetActive(true);
	
}


#endif