flappy bird 基于cocos2d-x 3.8

#include "HelloWorldScene.h" USING_NS_CC; Scene* HelloWorld::createScene() { auto scene = Scene::create(); auto layer = HelloWorld::create(); scene->addChild(layer); return scene; } bool HelloWorld::init() { if ( !Layer::init() ) { return false; } startflag = true; score = 0; visibleSize = Director::getInstance()->getVisibleSize(); Vec2 origin = Director::getInstance()->getVisibleOrigin(); scorelabel = LabelTTF::create("score :0", "Arial", 24); scorelabel->setPosition(Point(5, visibleSize.height - 5)); scorelabel->setAnchorPoint(Vec2(0, 1)); this->addChild(scorelabel, 10); SpriteFrameCache::getInstance()->addSpriteFramesWithFile("tex.plist"); setTouchEnabled(true); setTouchMode(Touch::DispatchMode::ONE_BY_ONE); //调用方法 this->initPhysics(); this->addground(); this->addbird(); return true; } void HelloWorld::initPhysics() { b2Vec2 gravity; gravity.Set(0.0f, -10.0f); world = new b2World(gravity); world->SetAllowSleeping(true); world->SetContinuousPhysics(true); world->SetContactListener(this); } void HelloWorld::addbar(float t) { float offset = -rand() % 5; //down auto down = bird::create("down_bar.png"); down->setPosition(Vec2(visibleSize.width + 2 * RATIO, visibleSize.height / 2 + offset*RATIO)); Size size = down->getContentSize(); b2BodyDef bodydef; bodydef.type = b2_kinematicBody; bodydef.position = b2Vec2(visibleSize.width / RATIO + 2, size.height / RATIO / 2 + offset); b2Vec2 a; a.Set(-5.0f, 0.0f); bodydef.linearVelocity = a; b2Body *downbody = world->CreateBody(&bodydef); b2PolygonShape shape; shape.SetAsBox(size.width / 2 / RATIO, size.height / 2 / RATIO); b2FixtureDef fixtexdef; fixtexdef.shape = &shape; downbody->CreateFixture(&fixtexdef); downbody->SetUserData(down); this->addChild(down,2); //up auto up = bird::create("up_bar.png"); up->setPosition(Vec2(visibleSize.width + 2 * RATIO, size.height + offset*RATIO + 2 * RATIO)); Size upsize = up->getContentSize(); b2BodyDef upbodydef; upbodydef.type = b2_kinematicBody; upbodydef.position = b2Vec2(visibleSize.width / RATIO + 2, size.height/RATIO + upsize.height / 2 / RATIO + 2 + offset / RATIO ); upbodydef.linearVelocity = a; b2Body *upbody = world->CreateBody(&upbodydef); b2PolygonShape upshape; upshape.SetAsBox(size.width / 2 / RATIO, size.height / 2 / RATIO); b2FixtureDef upfixtexdef; upfixtexdef.shape = &upshape; upbody->CreateFixture(&upfixtexdef); upbody->SetUserData(up); this->addChild(up, 2); score++; char chara[10]; char endc[20]="score :"; sprintf(chara, "%d", score-1); strcat(endc, chara); scorelabel->setString(endc); } void HelloWorld::addbird() { H_bird = Sprite::createWithSpriteFrameName("bird.png"); H_bird->setPosition(visibleSize.width/ 2, visibleSize.height/ 2); this->addChild(H_bird); Size size = H_bird->getContentSize(); b2BodyDef bodydef; bodydef.type = b2_dynamicBody; bodydef.position = b2Vec2(visibleSize.width / 2 / RATIO, visibleSize.height / 2 / RATIO); body = world->CreateBody(&bodydef); b2PolygonShape shape; shape.SetAsBox(size.width / 2 / RATIO, size.height / 2 / RATIO); b2FixtureDef birdfixturedef; birdfixturedef.shape = &shape; body->CreateFixture(&birdfixturedef); body->SetUserData(H_bird); } void HelloWorld::update(float dt) { world->Step(dt, 8, 1); for (b2Body* b = world->GetBodyList(); b!=nullptr; b = b->GetNext()) { if (b->GetUserData() != nullptr) { Sprite* sprite = (Sprite*)b->GetUserData(); sprite->setPosition(Vec2(b->GetPosition().x * RATIO, b->GetPosition().y * RATIO)); sprite->setRotation(-1 * CC_RADIANS_TO_DEGREES(b->GetAngle())); } } } void HelloWorld::addground() { auto ground = bird::create("ground.png"); //this->addChild(ground); Size size = ground->getContentSize(); ground->setPosition(size.width / 2, size.height / 2); b2BodyDef bodydef; bodydef.type = b2_staticBody; bodydef.position = b2Vec2(size.width / 2 / RATIO, size.height / 2 / RATIO); b2PolygonShape shape; shape.SetAsBox(size.width / 2 / RATIO, size.height / 2 / RATIO); b2FixtureDef fixdef; fixdef.shape = &shape; auto body = world->CreateBody(&bodydef); body->CreateFixture(&fixdef); ground->setUserData(body); this->addChild(ground,100); } bool HelloWorld::onTouchBegan(Touch *touch, Event *event) { if (startflag) start(); else body->SetLinearVelocity(b2Vec2(0, 5)); return true; } void HelloWorld::start() { schedule(schedule_selector(HelloWorld::addbar), 1); this->scheduleUpdate(); startflag = false; } void HelloWorld::stop() { unschedule(schedule_selector(HelloWorld::addbar)); unscheduleUpdate(); auto image = MenuItemImage::create("start-nor.png", "start-pre.png", CC_CALLBACK_0(HelloWorld::menurestart,this)); auto m = Menu::create(image, NULL); m->setAnchorPoint(Vec2::ZERO); this->addChild(m,50); } void HelloWorld::BeginContact(b2Contact *contact) { auto SpriteA = contact->GetFixtureA()->GetBody()->GetUserData();; auto SpriteB = contact->GetFixtureB()->GetBody()->GetUserData(); if (SpriteA == H_bird || SpriteB == H_bird) { stop(); } } void HelloWorld::menurestart() { auto sc = HelloWorld::createScene(); Director::getInstance()->replaceScene(sc); }