update two class

Joystick &  ScrollingBackground

Author: bluesky466

Joystick/code/Joystick.cpp

@@ -0,0 +1,110 @@
+#include "Joystick.h"
+
+Joystick* Joystick::create(const char *fnBg,float bgRadius,const char *fnHandle,float handleRadius)
+{
+    Joystick *joystick = new Joystick();
+    if (joystick && joystick->init(fnBg,bgRadius,fnHandle,handleRadius))
+    {
+        joystick->autorelease();
+        return joystick;
+    }
+
+    CC_SAFE_DELETE(joystick);
+    return NULL;
+}
+
+bool Joystick::init(const char *fnBg,float bgRadius,const char *fnHandle,float handleRadius)
+{
+	//创建底盘精灵
+	m_bg = CCSprite::create(fnBg);
+	if(!m_bg)
+		return false;
+	this->addChild(m_bg);
+
+	//创建摇杆精灵
+	m_handle = CCSprite::create(fnHandle);
+	if(!m_handle)
+		return false;
+	this->addChild(m_handle);
+	
+	//初始化参数
+	m_touchEventListener = 0;
+    m_touchEventSelector = 0;
+	m_bgRadius     = bgRadius;
+	m_handleRadius = handleRadius;
+	m_handlePos    = ccp(0.0f,0.0f);
+
+	//设置底盘的大小
+	float bgDiameter = bgRadius * 2;
+	CCSize oriBgSize = m_bg->getContentSize();
+	m_bg->setScaleX(bgDiameter / oriBgSize.width);
+	m_bg->setScaleY(bgDiameter / oriBgSize.height);
+
+	//设置摇杆的大小
+	float handleDiameter = handleRadius * 2;
+	CCSize oriHandleSize = m_handle->getContentSize();
+	m_handle->setScaleX(handleDiameter / oriHandleSize.width);
+	m_handle->setScaleY(handleDiameter / oriHandleSize.height);
+
+	//设置定时器
+	this->schedule(schedule_selector(Joystick::callHandleEvent));
+
+	return true;
+
+}
+
+bool Joystick::ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent)
+{
+	CCPoint point = this->convertTouchToNodeSpaceAR(pTouch);
+	
+	//判断触点是否在摇杆上
+	if(point.x*point.x+point.y*point.y < m_handleRadius*m_handleRadius)
+		return true;
+	else
+		return false;
+}
+
+void Joystick::ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent)
+{
+	//将摇杆限制在底盘的范围内
+	CCPoint point = this->convertTouchToNodeSpaceAR(pTouch);
+
+	if(point.x*point.x+point.y*point.y > m_bgRadius*m_bgRadius)
+	{
+		point = point.normalize();
+		point = point * m_bgRadius;
+	}
+
+	m_handle->setPosition(point);
+}
+
+void Joystick::ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent)
+{
+	m_handle->setPosition(ccp(0.0f,0.0f));
+}
+
+void Joystick::ccTouchCancelled(CCTouch *pTouch, CCEvent *pEvent)
+{
+	m_handle->setPosition(ccp(0.0f,0.0f));
+}
+
+void Joystick::onEnter()
+{
+	CCNode::onEnter();
+	CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this,0,true);
+}
+
+void Joystick::onExit()
+{
+	CCNode::onExit();
+	CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this);
+}
+
+void Joystick::callHandleEvent(float interval)
+{
+	//调用摇杆事件处理方法
+	CCPoint point = m_handle->getPosition();
+
+	if(m_touchEventListener && m_touchEventSelector)
+		(m_touchEventListener->*m_touchEventSelector)(interval,point.x/m_bgRadius,point.y/m_bgRadius);
+}

Joystick/code/Joystick.h

@@ -0,0 +1,66 @@
+#ifndef __JOYSTICK_H__
+#define __JOYSTICK_H__
+
+#include "cocos2d.h"
+USING_NS_CC;
+
+typedef void (CCObject::*SEL_JoystickEvent)(float interval,float x, float y);
+#define joystickEvent_selector(_SELECTOR) (SEL_JoystickEvent)(&_SELECTOR)
+
+/**
+ *  操纵杆,背景和按钮都是是精灵类,它们的锚点一直都是ccp(0.5,0.5)
+ *  可以用setHandleEventListener方法设置摇杆摇动事件的处理
+ */
+class Joystick : public CCNode,public CCTargetedTouchDelegate
+{
+public:
+	Joystick(){}
+	virtual ~Joystick(){}
+
+	/**
+	 * 创建一个摇杆实例的静态方法
+	 *@param fnBg 背景图片的文件名,用来创建摇杆的底盘精灵
+	 *@param bgRadius 摇杆的底盘的半径
+	 *@param fnHandle 摇杆图片的文件名,用来创建摇杆精灵
+	 *@param handleRadius 摇杆的半径
+	 */
+	static Joystick* create(const char *fnBg,     float bgRadius,
+					        const char *fnHandle, float handleRadius);
+
+	bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);
+	void ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent);
+	void ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent);
+	void ccTouchCancelled(CCTouch *pTouch, CCEvent *pEvent);
+
+	void onEnter();
+	void onExit();
+
+	///设置摇杆移动时要调用的方法，这个方法的声明为void f（float interval, float x, float y）,interval是时间间隔，传入的x、y的范围都是0-1.0F
+	void setHandleEventListener(CCObject *target, SEL_JoystickEvent selector);
+
+	///这个方法每一帧都被调用,如果设置了摇杆事件的处理的话他会调用哪个处理方法
+	void callHandleEvent(float interval);
+protected:
+	CCSprite* m_bg;        ///<底盘的精灵
+	CCSprite* m_handle;    ///<摇杆的精灵
+
+	float m_bgRadius;      ///<底盘的半径
+	float m_handleRadius;  ///<摇杆的半径
+
+	CCPoint m_handlePos;   ///<摇杆在底盘坐标系的坐标
+
+	CCObject*         m_touchEventListener;
+    SEL_JoystickEvent m_touchEventSelector;
+
+	bool init(const char *fnBg,     float bgRadius,
+			  const char *fnHandle, float handleRadius);
+	
+};
+
+inline void Joystick::setHandleEventListener(CCObject *target, SEL_JoystickEvent selector)
+{
+	m_touchEventListener = target;
+	m_touchEventSelector = selector;
+}
+
+#endif

Joystick/help.txt

@@ -0,0 +1,52 @@
+class HelloWorld : public cocos2d::CCLayer
+
+{
+
+public:
+    
+	virtual bool init();  
+
+    
+	static cocos2d::CCScene* scene();
+ 
+	void menuCloseCallback(CCObject* pSender);
+ 
+
+	//摇杆事件处理
+	void moveSpr(float interval,float x , float y);
+
+
+	CREATE_FUNC(HelloWorld);
+
+
+
+private:
+	
+	CCSprite* m_pS;
+
+};
+
+
+//创建摇杆实例的代码片段
+Joystick* j = Joystick::create("CloseNormal.png",40,"CloseNormal.png",15);
+	
+j->setPosition(ccp(40,40));
+	
+j->setHandleEventListener(this,joystickEvent_selector(HelloWorld::moveSpr));
+	
+this->addChild(j);
+
+//摇杆事件处理
+void HelloWorld::moveSpr(float interval,float x , float y)
+
+{
+	
+	CCPoint pos = m_pS->getPosition();
+	
+	pos.x+=x*.5;
+	
+	pos.y+=y*.5;
+	
+	m_pS->setPosition(pos);
+
+}