3.cocos2dx它Menu，由menu為了實現場景切換



1 頭文件

TMenu.h

#ifndef __TMENU_H__

#define __TMENU_H__

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#include "cocos2d.h"

USING_NS_CC;

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class TMenu :public CCLayer

{

public:

??? static CCScene * scene();

??? CREATE_FUNC(TMenu);

??? bool init();

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??? CCMenu * menu;

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??? void menuCallback(CCObject * sender);

??? void closeCallback(CCObject * sender);

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??? virtual bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);

??? virtual void ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent);

};

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#endif

TMenu.cpp

#include "TMenu.h"

#include "AppMacros.h"

#include "T02LayerSprite.h"

#include "T03LayerZorder.h"

#include "T04ColorLayer.h"

#include "T05Coordinate.h"

#include "T06BatchNode.h"

#include "T07Schedule.h"

#include "T08Touch.h"

#include "T09Memory.h"

#include "T10Label.h"

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//通過sizeof(menu_array)求出數組占用的總空間大小

//通過sizeof(*menu_array)求出數組中的每一個元素的大小

static char * menu_array[]

{

??? "T02LayerSprite.h",

??? "T03LayerZorder.h",

??? "T04ColorLayer.h",

??? "T05Coordinate.h",

??? "T06BatchNode.h",

??? "T07Schedule.h",

??? "T08Touch.h",

??? "T09Memory.h",

??? "T10Label.h"

};

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CCScene * TMenu::scene()

{

??? CCScene * scene = CCScene::create();

??? TMenu * layer = TMenu::create();

??? scene->addChild(layer);

??? return scene;

}

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bool TMenu::init()

{

??? CCLayer::init();

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??? menu = CCMenu::create();

??? //通過以下的方式實現將菜單項加入到menu中

??? for (int i = 0; i < sizeof(menu_array) / sizeof(*menu_array); i++)

??? {

??????? CCMenuItem * item = CCMenuItemFont::create(menu_array[i],

??????????? this,

??????????? menu_selector(TMenu::menuCallback));

??????? menu->addChild(item);

??? }

??? //設置菜單的顯示方向為垂直方向

??? menu->alignItemsVertically();

??? addChild(menu);

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??? CCArray * array = menu->getChildren();

??? CCObject * obj;

??? int i = 0;

??? CCARRAY_FOREACH(array, obj)

??? {

??????? CCMenuItem * item = (CCMenuItem*)obj;

??????? item->setTag(i + 1 + 10000);

??????? i++;

??? }

??? CCMenuItem * closeItem = CCMenuItemImage::create("CloseNormal.png", "CloseSelected.png");

??? closeItem->setTarget(this, menu_selector(TMenu::closeCallback));

??? CCMenu * menu2 = CCMenu::create(closeItem, NULL);

??? menu2->setPosition(CCPointZero);

??? closeItem->setPosition(ccp(winSize.width - closeItem->getContentSize().width / 2,

??????? winSize.height - closeItem->getContentSize().height / 2));

??? addChild(menu2);

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??? //設置觸摸事件，為可touch

??? setTouchEnabled(true);

??? setTouchMode(kCCTouchesOneByOne);

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??? return true;

}

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//當點擊到菜單之后跳轉到指定的CCScene中去

void TMenu::menuCallback(CCObject * sender)

{

??? CCMenuItem * item = (CCMenuItem *)sender;

??? CCScene * pScene = NULL;

??? switch (item->getTag() - 10000)

??? {

??? case 1:

??????? pScene = T02LayerSprite::scene();

??????? break;

??? case 2:

??????? pScene = T03LayerZorder::scene();

??????? break;

??? case 3:

??????? pScene = T04ColorLayer::scene();

??????? break;

??? case 4:

??????? pScene = T05Coordinate::scene();

??????? break;

??? case 5:

??????? pScene = T06BatchNode::scene();

??????? break;

??? case 6:

??????? pScene = T07Schedule::scene();

??????? break;

??? case 7:

??????? pScene = T08Touch::scene();

??????? break;

??? case 8:

??????? pScene = T09Memory::scene();

??????? break;

??? case 9:

??????? pScene = T10Label::scene();

??????? break;

??? }

??? if (pScene != NULL)

??? {

??????? //通過CCDirector的sharedDirector來實現場景的切換

??????? CCDirector::sharedDirector()->replaceScene(pScene);

??? }

}

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//當點擊關閉的時候游戲退出

void TMenu::closeCallback(CCObject * sender)

{

??? exit(0);

}

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bool TMenu::ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent)

{

??? return true;

}

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void TMenu::ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent){

??? CCRect rcWin = CCRect(0,40,winSize.width,winSize.height - 80);

??? CCMenuItem * firstItem = (CCMenuItem *)menu->getChildren()->objectAtIndex(0);

??? CCMenuItem * lastItem = (CCMenuItem *)menu->getChildren()->lastObject();

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??? CCPoint firstInWorld = menu->convertToWorldSpace(firstItem->getPosition());

??? CCPoint lastInWorld = menu->convertToWorldSpace(lastItem->getPosition());

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??? //當中Delta的坐標表示的是開始坐標的減去最后坐標的差值

??? if (rcWin.containsPoint(firstInWorld) && pTouch->getDelta().y<0)

??????? return;

??? if (rcWin.containsPoint(lastInWorld) && pTouch->getDelta().y>0)

??????? return;

??? menu->setPositionY(menu->getPositionY() + pTouch->getDelta().y);

}

執行結果：

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