cocos2d-x 3.0游戏实例学习笔记《跑酷》第五步--button控制主角Jump&Crouch

说明：这里是借鉴：晓风残月前辈的博客。他是将泰然网的跑酷教程，用cocos2d-x 2.X 版本号重写的，眼下我正在学习cocos2d-X3.0 于是就用cocos2d-X 3.0重写，并做相关笔记

这一步其中，我们给PlayScene中加入两个button，让主角Jump and Crouch，button功能例如以下：

Jumpbutton。按下主角跳起来

Crouchbutton，按下主角下蹲，一直按着一直蹲，松开之后主角才站起来

这里用button包括头文件"cocos-ext.h"会遇到一点点问题，后面给出具体解决方法：

首先PlayScene.h中要包括头文件：

<span style="font-size:14px;">#include "cocos-ext.h"
USING_NS_CC_EXT;</span>

然后加入函数：

	//Jump
	void createJumpButton();
	void jumpEvent(Ref* pSender,Control::EventType event);

	//Crouch
	void createCrouchButton();
	void crouchDown(Ref* pSender,Control::EventType event);
	void crouchUp(Ref* pSender,Control::EventType event);

这里先解释一下，Crouch 有两个事件。我们在button中，要加入两个button事件，一个是按下。那么人物蹲下。然后button松开，人物又起来。两个事件。两个回调函数

然后实现：

void PlayScene::createJumpButton(){
	auto visibleSize = Director::getInstance()->getVisibleSize();

	auto jumpLabel = Label::create("Jump","Arail",30);
	auto norBtn = Scale9Sprite::create("norBtn.png");
	auto lightBtn = Scale9Sprite::create("lightBtn.png");

	auto jumpBtn = ControlButton::create(jumpLabel,norBtn);
	jumpBtn->setPosition(visibleSize.width-80,130);
	jumpBtn->setBackgroundSpriteForState(lightBtn,Control::State::HIGH_LIGHTED);

	jumpBtn->addTargetWithActionForControlEvents(
		this,
		cccontrol_selector(PlayScene::jumpEvent),
		Control::EventType::TOUCH_DOWN);

	this->addChild(jumpBtn);
}
void PlayScene::jumpEvent(Ref* pSender,Control::EventType event){
	//SimpleAudioEngine::sharedEngine()->playEffect("jump.mp3");
	m_runner->Jump();
}

void PlayScene::createCrouchButton(){
	auto visibleSize = Director::getInstance()->getVisibleSize();

	auto crouchLabel = Label::create("Crouch","Arail",30);
	auto norBtn = Scale9Sprite::create("norBtn.png");
	auto lightBtn = Scale9Sprite::create("lightBtn.png");

	auto crouchBtn = ControlButton::create(crouchLabel,norBtn);
	crouchBtn->setPosition(visibleSize.width-100,80);
	crouchBtn->setBackgroundSpriteForState(lightBtn,Control::State::HIGH_LIGHTED);

	//
	crouchBtn->addTargetWithActionForControlEvents(
		this,
		cccontrol_selector(PlayScene::crouchDown),
		Control::EventType::TOUCH_DOWN);
	
	//
	crouchBtn->addTargetWithActionForControlEvents(
		this,
		cccontrol_selector(PlayScene::crouchUp),
		Control::EventType::TOUCH_UP_INSIDE);

	this->addChild(crouchBtn);	
}
void PlayScene::crouchDown(Ref* pSender,Control::EventType event){
	//加入推断
	if(m_runner->getState() == running){
		m_runner->Crouch();
		m_runner->setPosition(runner_posX,ground_hight+m_runner->getCrouchSize().height/2);
	}
	//SimpleAudioEngine::sharedEngine()->playEffect("crouch.mp3");
}
void PlayScene::crouchUp(Ref* pSender,Control::EventType event){
	//否则，在跳起来的时候。点击crouch 松开之后，状态就会变成running
	if(m_runner->getState() == crouch){
		m_runner->stopAllActions();
		m_runner->Run();
	    m_runner->setPosition(runner_posX,ground_hight+m_runner->getRunJumpSize().height/2);
	}
}

然后在Runner.cpp中的init 函数中，还要记得

this->scheduleUpdate();,由于我们须要在update中推断起跳到最高点下落

然后在 PlayScene 的init函数也要加入两个createbutton函数

那么生成，然后这里就会遇到问题：

那么这里我们须要在项目上右键到属性，【配置属性】->【C/C++】->【常规】->【附加包括文件夹】如图：