游戏引擎

开发平台：
Visual C++

GameStateSplash.hpp：源码内容
							
#ifndef _GAME_STATES_SPLASH_H_
#define _GAME_STATES_SPLASH_H_
#include "GameState.h"
#define SPLASH_DELAY		4000.0f
#define SPLASH_DELAY_2		2000.0f
#define GAMESCREEN_WIDTH  512
#define GAMESCREEN_HEIGHT 480
class MeshEffect;
class GameStateSplash: public GameState
{
private:
	JTexture* mSplashTex;
	JQuad* mSplashQuad;
	
	int mStage;
	float mAlpha;
	float mTimer;
	float mDelta;
	float mMax;
	float mMaxDelta;
	MeshEffect* mEffect;
	JTexture* mBgTexture;
	JQuad* mBg;
	float caidanx1;
    float caidanx2;
	float caidanx3;
	float caidanx4;
    float caidanx5;
	float caidanx6;
	JLBFont* mPrint;
	JLBFont* mPrint2;
	JMusic* mMusic;
 
	JSample* snd2;
	int i;
public:
	GameStateSplash(GameApp* app): GameState(app) 
	{
		mEffect = NULL;
        mBgTexture = NULL;
		mBg = NULL;
		mSplashQuad = NULL;
		mMusic = NULL;
		snd2 =NULL;
	}
	virtual ~GameStateSplash() 
	{
	}
	virtual void Create() 
	{
		mSplashTex = mEngine->LoadTexture("Res/splash.png", true);
		mSplashQuad = new JQuad(mSplashTex, 0.0f, 0.0f, 332.0f, 180.0f);
		mBgTexture = mEngine->LoadTexture("backgroud/mubu.png", true);
        mBg = new JQuad(mBgTexture, 0.0f, 0.0f, GAMESCREEN_WIDTH,GAMESCREEN_HEIGHT);
		mPrint=new JLBFont("f3",16,true);
		mPrint2=new JLBFont("f3",16,true);
		mEffect = new MeshEffect(mSplashTex, 0, 0, 332, 180);
		
		mMusic = mEngine->LoadMusic("Res/smarioc.mod");
		snd2 = mEngine->LoadSample("music/menu.wav");
	}
	
	virtual void Destroy() 
	{
		if (mSplashQuad)
			delete mSplashQuad;
		if (mSplashTex)
			mEngine->FreeTexture(mSplashTex);
		if (mEffect)
			delete mEffect;
        if (mBgTexture) delete mBgTexture;
		if (mBg) delete mBg;
		if (mPrint)
			delete mPrint;
		if (mPrint2)
			delete mPrint2;
		if (mMusic)
			mEngine->FreeMusic(mMusic);
		if (snd2)
			mEngine->FreeSample(snd2);
	}
	
	virtual void Start()
	{
		mStage = 0;
		mAlpha = 0.0f;
		
		mMax = 16.0f;
		mMaxDelta = 16.0f/SPLASH_DELAY;
		mDelta = 255/SPLASH_DELAY;
		mEffect->SetMax(mMax);
		mEffect->SetAlpha(mAlpha);
		mEffect->SetPosition(100.0f, 100.0f);
		caidanx1=500.0f;
        caidanx2=500.0f;
        caidanx3=500.0f;
		caidanx4=0.0f;
        caidanx5=0.0f;
        caidanx6=0.0f;
		i=1;
		
		mEngine->EnableVSync(true);
	}
	virtual void End()
	{
		mEngine->EnableVSync(false);
		//mEngine->StopMusic();
		mEngine->FreeMusic(mMusic);
		mMusic = NULL;
	}
	virtual void Update()
	{
		float dt = mEngine->GetDelta();
		if (mEngine->GetButtonClick(PSP_CTRL_START))
		{
			mEngine->PlaySample(snd2);
			
			if(i==1)
			{
                mApp->SetNextState(GAME_STATE_LOADING);
			}
			else if(i==2)
			{
			   mApp->LoadGameStateHelp();
               mApp->SetNextState(GAME_STATE_HELP);
			}
			else if(i==3)
			{
                mEngine->End();
			}
			return;
		}
		if (mEngine->GetButtonClick(PSP_CTRL_DOWN))
		{
			mEngine->PlaySample(snd2);
			
			i++;
			if(i==4)
				i=1;
		}
		else if (mEngine->GetButtonClick(PSP_CTRL_UP))
		{
			mEngine->PlaySample(snd2);
			
			i--;
			if(i==0)
				i=3;
		}
        
		if (mStage == 0)
		{
			caidanx1=caidanx1-3;
	        caidanx2=caidanx2-3;
	        caidanx3=caidanx3-3;
			caidanx4=caidanx4+3;
	        caidanx5=caidanx5+3;
	        caidanx6=caidanx6+3;
			mAlpha += mDelta*dt;
			if (mAlpha > 255.0f)
			{
				mAlpha = 255.0f;
			}
			mMax -= mMaxDelta*dt;
			if (mMax<0.0f)
			{
				mMax = 0.0f;
				mStage = 1;
				mEngine->PlayMusic(mMusic);
			}
			mEffect->SetMax(mMax);
			mEffect->SetAlpha(mAlpha);
			mEffect->Update(dt);
		}
		else
		{
			//重新设定菜单选项的位置
            caidanx1=240.0f;
			caidanx2=240.0f;
			caidanx3=240.0f;
		}
	}
	virtual void Render() 
	{
		mEngine->ClearScreen(ARGB(255,255,255,255));
		mEngine->RenderQuad(mBg, 0.0f, 0.0f);
		mEffect->Render();
		mPrint->SetColor(ARGB(255,90,240,120));
		mPrint2->SetColor(ARGB(255,255,255,255));
       if (mStage == 0)
	   {
		   mPrint->printf(caidanx1,280.0f,"%s", "Play");
           mPrint->printf(caidanx2,320.0f,"%s", "Instructions");
		   mPrint->printf(caidanx3,360.0f,"%s", "Exit");
		   mPrint->printf(caidanx4,280.0f,"%s", "Play");
           mPrint->printf(caidanx5,320.0f,"%s", "Instructions");
		   mPrint->printf(caidanx6,360.0f,"%s", "Exit");
	   }
	   else if (mStage == 1)
	   {
			
           if(i==1)
		   {
			  mPrint2->printf(caidanx1,280.0f,"%s", "Play");
              mPrint->printf(caidanx2,320.0f,"%s", "Instructions");
		      mPrint->printf(caidanx3,360.0f,"%s", "Exit");
		   }
		   else if(i==2)
		   {
              mPrint->printf(caidanx1,280.0f,"%s", "Play");
              mPrint2->printf(caidanx2,320.0f,"%s", "Instructions");
		      mPrint->printf(caidanx3,360.0f,"%s", "Exit");
		   }
		   else if(i==3)
		   {
			  mPrint->printf(caidanx1,280.0f,"%s", "Play");
              mPrint->printf(caidanx2,320.0f,"%s", "Instructions");
		      mPrint2->printf(caidanx3,360.0f,"%s", "Exit");
		   }
		}
	}
};
#endif

						