b2Body* HelloWorld::addNewSpriteWithCoords(CCPoint p,string nname,int tag)
{
string name = nname;
CCSprite* sprite = CCSprite::create((name+".png").c_str());
sprite->setPosition(p);
sprite->setTag(tag);
bgLayer->addChild(sprite);
b2BodyDef bodyDef;
bodyDef.type = b2_dynamicBody;
bodyDef.position.Set(p.x/PTM_RATIO, p.y/PTM_RATIO);
bodyDef.userData = sprite;
b2Body *body = world->CreateBody(&bodyDef);
// add the fixture definitions to the body
GB2ShapeCache *sc = GB2ShapeCache::sharedGB2ShapeCache();
sc->addFixturesToBody(body, name.c_str());
sprite->setAnchorPoint(sc->anchorPointForShape(name.c_str()));
return body;
}
// on "init" you need to initialize your instance
bool HelloWorld::init()
{
//////////////////////////////
// 1. super init first
if ( !Layer::init() )
{
return false;
}
m_mouseJoint = nullptr;
Size visibleSize = Director::getInstance()->getVisibleSize();
Vec2 origin = Director::getInstance()->getVisibleOrigin();
/////////////////////////////
// 2. add a menu item with "X" image, which is clicked to quit the program
// you may modify it.
// add a "close" icon to exit the progress. it's an autorelease object
auto closeItem = MenuItemImage::create(
"CloseNormal.png",
"CloseSelected.png",
CC_CALLBACK_1(HelloWorld::menuCloseCallback, this));
closeItem->setPosition(Vec2(origin.x + visibleSize.width - closeItem->getContentSize().width/2 ,
origin.y + closeItem->getContentSize().height/2));
// create menu, it's an autorelease object
auto menu = Menu::create(closeItem, NULL);
menu->setPosition(Vec2::ZERO);
this->addChild(menu, 1);
/////////////////////////////
// 3. add your codes below...
// add a label shows "Hello World"
// create and initialize a label
auto label = LabelTTF::create("Hello World", "Arial", 24);
// position the label on the center of the screen
label->setPosition(Vec2(origin.x + visibleSize.width/2,
origin.y + visibleSize.height - label->getContentSize().height));
// add the label as a child to this layer
this->addChild(label, 1);
// add "HelloWorld" splash screen"
auto sprite = Sprite::create("HelloWorld.png");
// position the sprite on the center of the screen
sprite->setPosition(Vec2(visibleSize.width/2 + origin.x, visibleSize.height/2 + origin.y));
// add the sprite as a child to this layer
//this->addChild(sprite, 0);
//设置地球和绘图
{
b2Vec2 gravity;
gravity.Set(0.0f, -50.0f); //一个向下10单位的向量，作为重力减速度，Box2D中默认的单位是秒和米
mWorld = new b2World(gravity); // 创建一个有重力加速度的世界
m_debugDraw = new GLESDebugDraw(1/PTM_RATIO); //这里新建一个 debug渲染模块
//mWorld->SetDebugDraw(m_debugDraw); //设置
uint32 flags = 0;
flags += b2Draw::e_shapeBit ;
//flags += b2Draw::e_centerOfMassBit; //获取需要显示debugdraw的块
//flags += b2Draw::e_aabbBit; //AABB块
//flags += b2Draw::e_centerOfMassBit; //物体质心
flags += b2Draw::e_jointBit; //关节
//flags += b2Draw::e_shapeBit; //形状
//flags += b2Draw::e_centerOfMassBit;
m_debugDraw->SetFlags(flags); //需要显示那些东西
mWorld->SetDebugDraw(m_debugDraw);
mWorld->SetContactListener(this);
}
b2Body* ReBody;
//创建地面和墙壁
{
//向世界申请一个物体
b2BodyDef bodyDef;
bodyDef.position.Set(0,2);
m_groundBody = mWorld->CreateBody(&bodyDef);//添加地面
//申请到之后设置物体属性
{
b2EdgeShape shape;
b2FixtureDef fd;
fd.filter.categoryBits = grandMark;
fd.filter.maskBits = reMark | cirMark;
fd.shape = &shape;
shape.Set(b2Vec2(0.0f, 0.0f), b2Vec2(Director::getInstance()->getWinSize().width * PTM_RATIO, 0.0f));
m_groundBody->CreateFixture(&fd);
shape.Set(b2Vec2(0.0f, 0.0f), b2Vec2(0.0f, Director::getInstance()->getWinSize().height * PTM_RATIO));
m_groundBody->CreateFixture(&fd);
shape.Set(b2Vec2(Director::getInstance()->getWinSize().width * PTM_RATIO, 0.0f), b2Vec2(Director::getInstance()->getWinSize().width * PTM_RATIO, Director::getInstance()->getWinSize().height * PTM_RATIO));
m_groundBody->CreateFixture(&fd);
}
//向世界申请一个矩形
b2BodyDef bodyDefRe;
bodyDefRe.type = b2_staticBody;
bodyDefRe.position.Set((Director::getInstance()->getWinSize().width+400) * PTM_RATIO/2,Director::getInstance()->getWinSize().height * PTM_RATIO/2); //初始位置
ReBody = mWorld->CreateBody(&bodyDefRe);
//申请到之后设置物体属性
{
b2PolygonShape shape;
shape.SetAsBox(2,1);
b2FixtureDef fixtureDef;
fixtureDef.shape = & shape;
fixtureDef.density = 1.0f;
fixtureDef.friction = 0.3f;
fixtureDef.restitution = 1.0f;
ReBody->CreateFixture(&fixtureDef);
}
}
//创建矩形
{
//向世界申请一个物体
b2BodyDef bodyDef;
bodyDef.type = b2_dynamicBody;
bodyDef.position.Set(Director::getInstance()->getWinSize().width * PTM_RATIO/2,Director::getInstance()->getWinSize().height * PTM_RATIO/2); //初始位置
b2Body* body = mWorld->CreateBody(&bodyDef);
//申请到之后设置物体属性
{
b2PolygonShape dynamicBox;
dynamicBox.SetAsBox(2,2);
b2FixtureDef fixtureDef;
fixtureDef.shape = & dynamicBox;
fixtureDef.density = 1.0f;//指定密度, 自动推算质量
fixtureDef.friction = 0.3f;
fixtureDef.restitution = 0.5f;
fixtureDef.filter.groupIndex = -8;//和小球永远不碰撞 小球的groupIndex 也是-8 相同并且是负数, 不同则会碰撞
fixtureDef.filter.categoryBits = reMark;
fixtureDef.filter.maskBits = grandMark | cirMark;
body->CreateFixture(&fixtureDef);
}
body->SetSleepingAllowed(true);//设置能否睡觉
body->SetAwake(false);//设施是否醒着
body->SetBullet(true);//设置是否以子弹方式定义物体(用于高速击打)
body->ApplyForce(b2Vec2(1000,1000), b2Vec2(0,0), true);//推力
body->ApplyTorque(100, true);//扭力
body->ApplyLinearImpulse(b2Vec2(100,100), b2Vec2(0,0), true);//冲力
//重新设置质量属性
// b2MassData mass;
// mass.mass = 0.0;
// mass.center = b2Vec2(0,0);
// mass.I = 0;
// body->SetMassData(&mass);
}
//创建小球
{
//向世界申请一个物体
b2BodyDef bodyDef;
bodyDef.type = b2_dynamicBody;
bodyDef.position.Set((Director::getInstance()->getWinSize().width - 400) * PTM_RATIO/2,Director::getInstance()->getWinSize().height * PTM_RATIO/2); //初始位置
b2Body* body = mWorld->CreateBody(&bodyDef);
//申请到之后设置物体属性
{
b2CircleShape shape;
shape.m_radius = 1.0f;
b2FixtureDef fixtureDef;
fixtureDef.shape = & shape;
fixtureDef.density = 1.0f;
fixtureDef.friction = 0.3f;
fixtureDef.restitution = 1.0f;
fixtureDef.filter.groupIndex = -8;
body->CreateFixture(&fixtureDef);
}
//让小球有冲力
body->ApplyForce(b2Vec2(1000,100),b2Vec2(0,0),true);
}
//创建多边形
{
//向世界申请一个物体
b2BodyDef bodyDef;
bodyDef.type = b2_dynamicBody;
bodyDef.position.Set((Director::getInstance()->getWinSize().width-800) * PTM_RATIO/2,Director::getInstance()->getWinSize().height * PTM_RATIO/2); //初始位置
b2Body* body = mWorld->CreateBody(&bodyDef);
//申请到之后设置物体属性
{
b2Transform xf1;
xf1.q.Set(0.3524f * b2_pi);
xf1.p = xf1.q.GetXAxis();
b2Vec2 vertices[3];
vertices[0] = b2Mul(xf1, b2Vec2(-1.0f, 0.0f));
vertices[1] = b2Mul(xf1, b2Vec2(1.0f, 0.0f));
vertices[2] = b2Mul(xf1, b2Vec2(0.0f, 0.5f));
b2PolygonShape poly1;
poly1.Set(vertices, 3);
b2FixtureDef fixtureDef;
fixtureDef.shape = & poly1;
fixtureDef.density = 1.0f;
fixtureDef.friction = 0.3f;
fixtureDef.restitution = 0.5f;
fixtureDef.filter.categoryBits = cirMark;
fixtureDef.filter.maskBits = grandMark | reMark;
body->CreateFixture(&fixtureDef);
}
}
//创建小球挂在矩形下
{
//向世界申请一个球
b2BodyDef bodyDef0;
bodyDef0.type = b2_dynamicBody;
bodyDef0.position.Set((Director::getInstance()->getWinSize().width + 400) * PTM_RATIO/2,(Director::getInstance()->getWinSize().height+200) * PTM_RATIO/2); //初始位置
b2Body* circleBody0 = mWorld->CreateBody(&bodyDef0);
//申请到之后设置物体属性
{
b2CircleShape shape;
shape.m_radius = 1.0f;
b2FixtureDef fixtureDef;
fixtureDef.shape = & shape;
fixtureDef.density = 1.0f;
fixtureDef.friction = 0.3f;
fixtureDef.restitution = 1.0f;
circleBody0->CreateFixture(&fixtureDef);
}
//向世界申请一个球
b2BodyDef bodyDef1;
bodyDef1.type = b2_dynamicBody;
bodyDef1.position.Set((Director::getInstance()->getWinSize().width+400) * PTM_RATIO/2,(Director::getInstance()->getWinSize().height+400) * PTM_RATIO/2); //初始位置
b2Body* circleBody1 = mWorld->CreateBody(&bodyDef1);
//申请到之后设置物体属性
{
b2PolygonShape shape;
shape.SetAsBox(1,1);
b2FixtureDef fixtureDef;
fixtureDef.shape = & shape;
fixtureDef.density = 1.0f;
fixtureDef.friction = 0.3f;
fixtureDef.restitution = 1.0f;
circleBody1->CreateFixture(&fixtureDef);
}
//创建有弹力的连接线
b2DistanceJointDef jd;
b2Vec2 p1, p2, d;
jd.frequencyHz = 2.0f;
jd.dampingRatio = 0.0f;
jd.bodyA = circleBody0;
jd.bodyB = ReBody;
jd.localAnchorA.Set(0.0f, 0.0f);
jd.localAnchorB.Set(2.0f, -0.0f);
p1 = jd.bodyA->GetWorldPoint(jd.localAnchorA);
p2 = jd.bodyB->GetWorldPoint(jd.localAnchorB);
d = p2 - p1;
jd.length = d.Length()/7;
mWorld->CreateJoint(&jd);
jd.frequencyHz = 2.0f;
jd.dampingRatio = 0.0f;
jd.bodyA = circleBody0;
jd.bodyB = circleBody1;
jd.localAnchorA.Set(0.0f, 0.0f);
jd.localAnchorB.Set(0.0f, -0.0f);
p1 = jd.bodyA->GetWorldPoint(jd.localAnchorA);
p2 = jd.bodyB->GetWorldPoint(jd.localAnchorB);
d = p2 - p1;
jd.length = d.Length()/7;
mWorld->CreateJoint(&jd);
}
//创建类似弹簧的效果(推力)
{
//向世界申请一个物体
b2BodyDef bodyDef;
bodyDef.type = b2_dynamicBody;
bodyDef.position.Set((Director::getInstance()->getWinSize().width+400) * PTM_RATIO/2,(Director::getInstance()->getWinSize().height + 400)* PTM_RATIO/2); //初始位置
b2Body* body = mWorld->CreateBody(&bodyDef);
//申请到之后设置物体属性
{
b2PolygonShape dynamicBox;
dynamicBox.SetAsBox(2,2);
b2FixtureDef fixtureDef;
fixtureDef.shape = & dynamicBox;
fixtureDef.density = 1.0f;
fixtureDef.friction = 0.3f;
fixtureDef.restitution = 1.0f;
body->CreateFixture(&fixtureDef);
}
b2MotorJointDef mjd;
mjd.Initialize(ReBody, body);
mjd.maxForce = 1000.0f;
mjd.maxTorque = 1000.0f;
mjd.collideConnected = true;//设置是否碰撞
mWorld->CreateJoint(&mjd);
}
// //创建类似弹簧的效果(推力)
// {
// //向世界申请一个物体
// b2BodyDef bodyDef;
// bodyDef.type = b2_dynamicBody;
// bodyDef.position.Set(0.0f+5+5+10,(Director::getInstance()->getWinSize().height + 400)* PTM_RATIO/2); //初始位置
// b2Body* body = mWorld->CreateBody(&bodyDef);
//
// //申请到之后设置物体属性
// {
// b2PolygonShape dynamicBox;
// dynamicBox.SetAsBox(1,1);
//
// b2FixtureDef fixtureDef;
// fixtureDef.shape = & dynamicBox;
// fixtureDef.density = 1.0f;
// fixtureDef.friction = 0.3f;
// fixtureDef.restitution = 1.0f;
//
// body->CreateFixture(&fixtureDef);
// }
//
//
//
// //向世界申请一个物体
// b2BodyDef bodyDef2;
// bodyDef2.type = b2_dynamicBody;
// bodyDef2.position.Set(0.0f+5+5,(Director::getInstance()->getWinSize().height + 400)* PTM_RATIO/2); //初始位置
// b2Body* body2 = mWorld->CreateBody(&bodyDef2);
//
// //申请到之后设置物体属性
// {
// b2PolygonShape dynamicBox;
// dynamicBox.SetAsBox(1,1);
//
// b2FixtureDef fixtureDef;
// fixtureDef.shape = & dynamicBox;
// fixtureDef.density = 1.0f;
// fixtureDef.friction = 0.3f;
// fixtureDef.restitution = 1.0f;
//
// body2->CreateFixture(&fixtureDef);
// }
//
// b2PulleyJointDef jointDef;
// jointDef.Initialize(body1, body2, groundAnchor1, groundAnchor2, anchor1, anchor2, ratio);
// jointDef.maxLength1 = 18.0f;
// jointDef.maxLength2 = 20.0f;
// mWorld->CreateJoint(&jointDef);
// }
//关节旋转
{
b2PolygonShape shape;
shape.SetAsBox(0.5f, 0.125f);
b2FixtureDef fd;
fd.shape = &shape;
fd.density = 20.0f;
fd.friction = 0.2f;
b2RevoluteJointDef jd;
//jd.collideConnected = false;
const float32 y = 3.0f;
b2Body* prevBody = m_groundBody;
for (int32 i = 0; i < 10; ++i)
{
b2BodyDef bd;
bd.type = b2_dynamicBody;
bd.position.Set( i +10+0.5, y);//世界坐标
b2Body* body = mWorld->CreateBody(&bd);
body->CreateFixture(&fd);
b2Vec2 anchor(float32(i) +10, y);//节点位置,世界坐标
jd.Initialize(prevBody, body, anchor);
mWorld->CreateJoint(&jd);
prevBody = body;
}
}
//发动机demo
{
//向世界申请一个矩形, 底座
b2BodyDef bodyDefRe;
bodyDefRe.type = b2_staticBody;
bodyDefRe.position.Set(5,9.5); //初始位置
ReBody = mWorld->CreateBody(&bodyDefRe);
//申请到之后设置物体属性
{
b2PolygonShape shape;
shape.SetAsBox(2,1);
b2FixtureDef fixtureDef;
fixtureDef.shape = & shape;
fixtureDef.density = 1.0f;
fixtureDef.friction = 0.3f;
fixtureDef.restitution = 1.0f;
ReBody->CreateFixture(&fixtureDef);
}
b2Body* prevBody = ReBody;
// Define crank.第一根轴
{
b2PolygonShape shape;
shape.SetAsBox(0.5f, 2.0f);
b2BodyDef bd;
bd.type = b2_dynamicBody;
bd.position.Set(0+5.0f, 7.0f+5+5);
b2Body* body = mWorld->CreateBody(&bd);
body->CreateFixture(&shape, 2.0f);
b2RevoluteJointDef rjd;
rjd.Initialize(prevBody, body, b2Vec2(0+5.0f, 5.0f+5+5));
rjd.motorSpeed = 1.0f * b2_pi;//旋转速度 正数为逆时针
rjd.maxMotorTorque = 10000.0f;//给的力
rjd.enableMotor = true;//允许一直给力
mWorld->CreateJoint(&rjd);
prevBody = body;
}
// Define follower.第二根轴
{
b2PolygonShape shape;
shape.SetAsBox(0.5f, 4.0f);
b2BodyDef bd;
bd.type = b2_dynamicBody;
bd.position.Set(0.0f+5, 13.0f+5+5);
b2Body* body = mWorld->CreateBody(&bd);
body->CreateFixture(&shape, 2.0f);
b2RevoluteJointDef rjd;
rjd.Initialize(prevBody, body, b2Vec2(0.0f+5, 9.0f+5+5));
rjd.enableMotor = false;
mWorld->CreateJoint(&rjd);
prevBody = body;
}
//
// Define piston
{
//上面的拖
b2PolygonShape shape;
shape.SetAsBox(1.5f, 1.5f);
b2BodyDef bd;
bd.type = b2_dynamicBody;
bd.fixedRotation = true;
bd.position.Set(0.0f+5, 17.0f+5+5);
b2Body* body = mWorld->CreateBody(&bd);
body->CreateFixture(&shape, 2.0f);
//设置移动关节
b2RevoluteJointDef rjd;
rjd.Initialize(prevBody, body, b2Vec2(0.0f+5, 17.0f+5+5));
mWorld->CreateJoint(&rjd);
b2PrismaticJointDef pjd;
pjd.Initialize(ReBody, body, b2Vec2(0.0f+5, 17.0f+5+5), b2Vec2(0.0f, 1.0f));//参数分别为bodyA,bodyB,运动最远点, 运动方向
pjd.maxMotorForce = 0.0f;//永远给个向上的推力
pjd.enableMotor = true;
mWorld->CreateJoint(&pjd);
}
//
// // Create a payload
// {
// b2PolygonShape shape;
// shape.SetAsBox(1.5f, 1.5f);
//
// b2BodyDef bd;
// bd.type = b2_dynamicBody;
// bd.position.Set(0.0f, 23.0f);
// b2Body* body = mWorld->CreateBody(&bd);
// body->CreateFixture(&shape, 2.0f);
// }
}
//box2dEdit 文件加载
GB2ShapeCache::sharedGB2ShapeCache()->addShapesWithFile("bird.plist");
//加载文件中的物体 big_bird
{
//向世界申请一个物体
b2BodyDef bodyDef;
bodyDef.type = b2_dynamicBody;
bodyDef.position.Set((Director::getInstance()->getWinSize().width - 500) * PTM_RATIO/2,Director::getInstance()->getWinSize().height * PTM_RATIO/2); //初始位置
b2Body* birdBody = mWorld->CreateBody(&bodyDef);
birdBody->SetBullet(true);
GB2ShapeCache* cache = GB2ShapeCache::sharedGB2ShapeCache();
cache->addFixturesToBody(birdBody,"big_bird");
Sprite* birdSp = Sprite::create("big_bird.png");
this->addChild(birdSp);
birdSp->setPosition(Vec2((Director::getInstance()->getWinSize().width - 500)/2,Director::getInstance()->getWinSize().height/2));
birdBody->SetUserData(birdSp);
bodys.push_back(birdBody);
}
//加载文件中的物体 pig_1_1
{
//向世界申请一个物体
b2BodyDef bodyDef;
bodyDef.type = b2_dynamicBody;
bodyDef.position.Set((Director::getInstance()->getWinSize().width - 550) * PTM_RATIO/2,Director::getInstance()->getWinSize().height * PTM_RATIO/2); //初始位置
b2Body* body = mWorld->CreateBody(&bodyDef);
GB2ShapeCache* cache = GB2ShapeCache::sharedGB2ShapeCache();
cache->addFixturesToBody(body,"pig_1_1");
}
//加载文件中的物体 slingshot
{
//向世界申请一个物体
b2BodyDef bodyDef;
bodyDef.type = b2_dynamicBody;
bodyDef.position.Set((Director::getInstance()->getWinSize().width - 650) * PTM_RATIO/2,Director::getInstance()->getWinSize().height * PTM_RATIO/2); //初始位置
b2Body* body = mWorld->CreateBody(&bodyDef);
body->SetBullet(true);
GB2ShapeCache* cache = GB2ShapeCache::sharedGB2ShapeCache();
cache->addFixturesToBody(body,"slingshot");
Sprite* birdSp = Sprite::create("slingshot.png");
this->addChild(birdSp);
birdSp->setPosition(Vec2((Director::getInstance()->getWinSize().width - 500)/2,Director::getInstance()->getWinSize().height/2));
body->SetUserData(birdSp);
bodys.push_back(body);
}
//添加触摸事件
// Adds Touch Event Listener
auto listener = EventListenerTouchOneByOne::create();
listener->setSwallowTouches(true);//
listener->onTouchBegan = CC_CALLBACK_2(HelloWorld::onTouchBegan, this);
listener->onTouchMoved = CC_CALLBACK_2(HelloWorld::onTouchMoved, this);
listener->onTouchEnded = CC_CALLBACK_2(HelloWorld::onTouchEnded, this);
_eventDispatcher->addEventListenerWithFixedPriority(listener, -10);//先被触摸
_touchListener = listener;
Device::setAccelerometerEnabled(true);
Device::setAccelerometerInterval(1/30.0);
auto listener2 = EventListenerAcceleration::create(CC_CALLBACK_2(HelloWorld::onAcceleration, this));
_eventDispatcher->addEventListenerWithSceneGraphPriority(listener2, this);
this->scheduleUpdate();
return true;
}
