Cocos2d-x常用功能-Cocos2d-x用户交互事件处理：触摸、传感器、物理按键

第三阶段：常用功能3-
--Cocos2d-x常用功能-Cocos2d-x用户交互事件处理：触摸、传感器、物理按键（共6部分）
1.Cocos2d-x单点触摸
Size size = Director::getInstance()->getVisibleSize();

auto label = LabelTTF::create("Click me",
"Courier",
30);

label->setPosition(size.width/2, size.height/2);

addChild(label);

auto listener = EventListenerTouchOneByOne::create();

listener->onTouchBegan = [](Touch *t,Event *e){

if (e->getCurrentTarget()->getBoundingBox().containsPoint(t->getLocation())) {

log("onTouchBegan");

}

return
true;

};

listener->onTouchMoved = [](Touch* t,Event *e){

log("onTouchMoved");

};

listener->onTouchEnded = [](Touch *t,Event *e){

log("onTouchEnd");

};

Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener, label);
2.Cocos2d-x触摸目标判断
//获取当前事件目标也就是label
if (e->getCurrentTarget()->getBoundingBox().containsPoint(t->getLocation()))
{

log("onTouchBegan");

}

3.Cocos2d-x事件传递
onTouchBegan事件return
true;之后才能执行onTouchMoved、onTouchEnded

listener->onTouchMoved = [](Touch* t,Event *e){

log("onTouchMoved");

};

listener->onTouchEnded = [](Touch *t,Event *e){

log("onTouchEnd");

};

4.Cocos2d-x多点触摸
安卓的DNK首先配置在环境变量里面
proj.android---build_native.py
Size visibleSize = Director::getInstance()->getVisibleSize();

auto listener = EventListenerTouchAllAtOnce::create();

listener->onTouchesBegan = [](std::vector<Touch*> ts,Event *e){

log("onTouchesBegan");

};

listener->onTouchesMoved = [](std::vector<Touch*> ts,Event *e){

log("touches moved ,and touch count is %ld",ts.size());

};

Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener,
this);

5.Cocos2d-x加速度
acceleration加速度加速 stamp标志/邮票；印记
double类型 %g
JAVA ADT 里面 右键import 打开proj.android, 然后删除依赖项

cocos2d ▸ cocos ▸ platform ▸ android ▸ java ▸ src 放在JAVA ADT 的 src 里面 按下F11 选中Android Aplication

//加速度传感器默认处于关闭状态，需要打开
Device::setAccelerometerEnabled(true);

Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(EventListenerAcceleration::create([](Acceleration *a,Event *e){

log("x:%g,y:%g,z:%g",a->x,a->y,a->z);

}),
this);

6.Cocos2d-x物理按键交互
auto listener = EventListenerKeyboard::create();

listener->onKeyReleased = [](EventKeyboard::KeyCode code,Event *e){

log("key code : %d",code);

switch (code) {

case EventKeyboard::KeyCode::KEY_BACKSPACE:

Director::getInstance()->end();

break;

default:

break;

}

};

Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener,
this);