cocos2d-x 3.0加载PhysicsEditor生成plist的加载器并生成CCPhysicsBody
来源：互联网 发布：上海二手房数据 编辑：程序博客网 时间：2024/05/16 01:39
一、环境：
cocos2d-x 3.0
PhysicsEditor 1.0.10
二、cocos2d-x 3.0 篇：
从cocos2d-x 3.0 可以在scene 中直接添加物理世界后，开发物理效果的2d游戏相对轻松多了。可是编辑多边形的body 就成了问题，之前-x 2.x 版的PE loader 没有目前 CCPhysicsBody 的封装。本人就参考 之前的-x 2.x 版的loader 写了一个-x 3.x 版的PE laoder ,加载 chipmunk shapes ，并根据图片名 获得CCPhysicsBody。
测试代码如下：
#include "HelloWorldScene.h"#include "VisibleRect.h"#include "ResourcesPath.h"#include "PEShapeCache_X3_0.h"USING_NS_CC;static const int DRAG_BODYS_TAG = 0x79;static const int DRAG_BODYS_TAG_Y = 0x80;static const int DRAG_BODYS_TAG1 = 0x81;Scene *HelloWorld::createScene(){ auto scene = Scene::createWithPhysics(); auto layer = HelloWorld::create(); scene->addChild(layer); // Device::setAccelerometerEnabled(true); return scene;}void HelloWorld::onEnter(){ Layer::onEnter(); //初始化父节点 _scene = dynamic_cast<Scene *>(this->getParent()); //注册触摸监听器 auto touchListener = EventListenerTouchOneByOne::create(); touchListener->onTouchBegan = CC_CALLBACK_2(HelloWorld::onTouchBegan, this); touchListener->onTouchMoved = CC_CALLBACK_2(HelloWorld::onTouchMoved, this); touchListener->onTouchEnded = CC_CALLBACK_2(HelloWorld::onTouchEnded, this); _eventDispatcher->addEventListenerWithSceneGraphPriority(touchListener, this); // auto accListener = EventListenerAcceleration::create(CC_CALLBACK_2(HelloWorld::onAcceleration, this));初始一个重力感应监听 // _eventDispatcher->addEventListenerWithSceneGraphPriority(accListener, this);注册重力感应监听 //设置物理世界 _scene->getPhysicsWorld()->setGravity(Vect(0, 0)); //设置重力 _scene->getPhysicsWorld()->setSpeed(1.0f); //物理世界速度 速度越快刚体越快 _scene->getPhysicsWorld()->setDebugDrawMask(PhysicsWorld::DEBUGDRAW_ALL); //绘制调试绘制 //添加拼图模板图片 auto bg = Sprite::create(shizi_di_png); bg->setPosition(VisibleRect::center()); this->addChild(bg); PEShapeCache::getInstance()->addBodysWithFile(buttonsbodys_plist); this->addPhysicsSprite();}void HelloWorld::addPhysicsSprite(){ // _scene->getPhysicsWorld()->setUpdateRate(5.0f); // wall 添加物理边境 Size size = VisibleRect::getVisibleRect().size; auto wall = Node::create(); //给节点添加静态矩形刚体（PhysicsBody）并带材质（PhysicsMaterial） wall->setPhysicsBody(PhysicsBody::createEdgeBox(Size(size.width - 5, size.height - 5), PhysicsMaterial(0.1f, 1.0f, 1.0f))); // wall->getPhysicsBody()->setDynamic(false);//设置为静态刚体（Edge // wall->getPhysicsBody()->setEnable(false); wall->getPhysicsBody()->setGroup(1); //组编号 /**一个body的CategoryBitmask和另一个body的ContactTestBitmask的逻辑与的结果不等于0时，接触事件将被发出，否则不发送。 *一个body的CategoryBitmask和另一个body的CollisionBitmask的逻辑与结果不等于0时，他们将碰撞，否则不碰撞 */ // wall->getPhysicsBody()->setCategoryBitmask(0x03);// 0011 碰撞系数编号 // wall->getPhysicsBody()->setContactTestBitmask(0x03);// 0001 碰撞检测编号 // wall->getPhysicsBody()->setCollisionBitmask(0x01);// 0001 碰撞编号 wall->setPosition(VisibleRect::center()); //位置可见区域中心 this->addChild(wall); //多纳的头 auto tou = Sprite::create(shizi_tou_png);// tou->setPhysicsBody(PhysicsBody::createCircle(271, PhysicsMaterial(1000.1f, 0.0f, 1.0f)));//添加半径为271动态圆形刚体 并赋予材质密度1000.1f 反弹力0.0f 摩擦力1.0f auto toubody = PEShapeCache::getInstance()->getPhysicsBodyByName("shizi_tou"); tou->setPhysicsBody(toubody); tou->getPhysicsBody()->setTag(DRAG_BODYS_TAG);//给刚体设置标签 tou->getPhysicsBody()->setMass(0.1);//刚体设置质量 tou->getPhysicsBody()->setGroup(2);//刚体组编号 tou->getPhysicsBody()->setCategoryBitmask(0x01); // 0001 tou->getPhysicsBody()->setContactTestBitmask(0x01); // 0001 tou->getPhysicsBody()->setCollisionBitmask(0x01); // 0001 // tou->getPhysicsBody()->setDynamic(false); 动态刚体是可以设置为静态 tou->getPhysicsBody()->setRotationEnable(false); //设置不可旋转刚体 碰撞后也不会旋转刚体 // tou->getPhysicsBody()->setGravityEnable(false);//设置是否接受重力影响 tou->getPhysicsBody()->setLinearDamping(3.0f); //设置线性阻尼系数 理论是0-1 但是可以大于1 值越大惯性越小 this->addChild(tou); tou->setPosition(VisibleRect::center()); auto touyingzi = Node::create(); touyingzi->setPhysicsBody(PhysicsBody::createCircle(271, PhysicsMaterial(1000.1f, 0.0f, 1.0f))); touyingzi->getPhysicsBody()->setTag(DRAG_BODYS_TAG_Y); //多纳的身子 //PhysicsShapePolygon 是通过点数组来构建不规则的凸多边形；用工具PhysicsEditor 编辑shap 让后导出Chipmunk 格式的plist 中的数据 注：PhysicsEditor Relative为锚点Anchor 设置为cocos默认值（0.5，0.5）才行 ， auto shengzi = Sprite::create(shizi_shenzi_png);// auto shengzibody = PhysicsBody::create();// Point vert1[3] = {Point(109.50000, 71.00000), Point(14.00000, 77.00000), Point(117.50000, 147.00000)};// shengzibody->addShape(PhysicsShapePolygon::create(vert1, 3, PhysicsMaterial(0.1f, 0.0f, 1.0f)));// Point vert2[6] = {Point(-130.50000, -154.00000), Point(-120.50000, 46.00000), Point(-67.50000, 102.00000), Point(14.00000, 77.00000), Point(-4.00000, -93.00000), Point(-63.00000, -178.50000)};// shengzibody->addShape(PhysicsShapePolygon::create(vert2, 6, PhysicsMaterial(0.1f, 0.0f, 1.0f)));// Point vert3[6] = {Point(138.50000, 18.00000), Point(110.50000, -177.00000), Point(51.50000, -175.00000), Point(-4.00000, -93.00000), Point(14.00000, 77.00000), Point(109.50000, 71.00000)};// shengzibody->addShape(PhysicsShapePolygon::create(vert3, 6, PhysicsMaterial(0.1f, 0.0f, 1.0f)));// Point vert4[4] = {Point(-67.50000, 102.00000), Point(-55.00000, 172.50000), Point(-54.00000, 172.50000), Point(14.00000, 77.00000)};// shengzibody->addShape(PhysicsShapePolygon::create(vert4, 4, PhysicsMaterial(0.1f, 0.0f, 1.0f))); auto shengzibody = PEShapeCache::getInstance()->getPhysicsBodyByName("shizi_shenzi"); shengzi->setPhysicsBody(shengzibody); shengzibody->setTag(DRAG_BODYS_TAG1); shengzibody->setRotationEnable(false); shengzibody->setGroup(2); shengzibody->setMass(0.1); shengzibody->setCategoryBitmask(0x02); //0010 shengzibody->setContactTestBitmask(0x02); //0010 shengzibody->setCollisionBitmask(0x02); //0010 shengzibody->setLinearDamping(3.0f); this->addChild(shengzi); shengzi->setPosition(VisibleRect::bottom() - Point(0, -300)); // auto contactListener = EventListenerPhysicsContactWithBodies::create(tou->getPhysicsBody(), shengzi->getPhysicsBody()); // contactListener->onContactBegin = CC_CALLBACK_1(HelloWorld::onContactBegin, this); // _eventDispatcher->addEventListenerWithSceneGraphPriority(contactListener, this); //多纳的头 auto b1 = Sprite::create(shizi_youshou_png); b1->setPhysicsBody(PEShapeCache::getInstance()->getPhysicsBodyByName("shizi_youshou")); b1->setPosition(VisibleRect::center()+Point(300,0)); b1->getPhysicsBody()->setTag(1); b1->getPhysicsBody()->setRotationEnable(false); this->addChild(b1); auto b2 = Sprite::create(shizi_zuoshou_png); b2->setPhysicsBody(PEShapeCache::getInstance()->getPhysicsBodyByName("shizi_zuoshou")); b2->setPosition(VisibleRect::center()-Point(300,0)); b2->getPhysicsBody()->setRotationEnable(false); b2->getPhysicsBody()->setTag(1); this->addChild(b2); // LabelTTF auto label2 = LabelTTF::create("多纳小狮子爱学习", "Arial", 64); label2->setPhysicsBody(PhysicsBody::createBox(label2->getBoundingBox().size, PhysicsMaterial(0.1f, 0.0f, 1.0f))); label2->getPhysicsBody()->setTag(1);// label2->getPhysicsBody()->setRotationEnable(false); label2->setPosition(VisibleRect::center()+Point(0,300)); addChild(label2, 0); PEShapeCache::getInstance()->removeBodysWithWithFile(buttonsbodys_plist); //注册碰撞检测监听 auto contactListener1 = EventListenerPhysicsContact::create(); contactListener1->onContactBegin = CC_CALLBACK_1(HelloWorld::onContactBegin, this); contactListener1->onContactPostSolve = CC_CALLBACK_2(HelloWorld::onContactPostSolve, this); _eventDispatcher->addEventListenerWithSceneGraphPriority(contactListener1, this);}void HelloWorld::onContactPostSolve(PhysicsContact &contact, const PhysicsContactPostSolve &solve){ CCLOG("%s", "################## onContactPostSolve");}bool HelloWorld::onContactBegin(PhysicsContact &contact){ CCLOG("%s", "################## onContactBegin"); return true; // contact.getContactData()->normal.y < 0;}void HelloWorld::onAcceleration(Acceleration *acc, Event *event){ static float prevX = 0, prevY = 0;#define kFilterFactor 0.05f float accelX = (float)acc->x * kFilterFactor + (1 - kFilterFactor) * prevX; float accelY = (float)acc->y * kFilterFactor + (1 - kFilterFactor) * prevY; prevX = accelX; prevY = accelY; auto v = Point(accelX, accelY); v = v * 200; if (_scene != nullptr) { _scene->getPhysicsWorld()->setGravity(v); }}bool HelloWorld::onTouchBegan(cocos2d::Touch *touch, cocos2d::Event *event){ CCLOG("%s", "touch"); auto location = touch->getLocation(); auto arr = _scene->getPhysicsWorld()->getShapes(location);//从物理世界得到多边形 PhysicsBody *body = nullptr; for (auto &obj : arr) { if ((obj->getBody()->getTag() & DRAG_BODYS_TAG) != 0) //得到刚体 { body = obj->getBody(); break; } } if (body != nullptr) { //创建一个刚体 Node *mouse = Node::create(); mouse->setPhysicsBody(PhysicsBody::create(PHYSICS_INFINITY, PHYSICS_INFINITY)); mouse->getPhysicsBody()->setDynamic(false); mouse->setPosition(location); this->addChild(mouse); body->setLinearDamping(0.0f); //用图钉关节与点中刚体绑定 赋予力 可以拖动 PhysicsJointPin *joint = PhysicsJointPin::construct(mouse->getPhysicsBody(), body, location); joint->setMaxForce(5000.0f * body->getMass()); _scene->getPhysicsWorld()->addJoint(joint); _mouses.insert(std::make_pair(touch->getID(), mouse)); return true; } return false;}void HelloWorld::onTouchMoved(Touch *touch, Event *event){ auto it = _mouses.find(touch->getID()); if (it != _mouses.end()) { it->second->setPosition(touch->getLocation()); }}void HelloWorld::onTouchEnded(Touch *touch, Event *event){ auto it = _mouses.find(touch->getID()); if (it != _mouses.end()) { this->removeChild(it->second); _mouses.erase(it); } //增加摩擦阻尼 减小惯性 PhysicsBody *body = _scene->getPhysicsWorld()->getBody(DRAG_BODYS_TAG); if (body != nullptr) { body->setLinearDamping(2.5f); } PhysicsBody *body1 = _scene->getPhysicsWorld()->getBody(DRAG_BODYS_TAG1); if (body1 != nullptr) { body1->setLinearDamping(2.5f); }}void HelloWorld::menuCloseCallback(Ref *pSender){#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT) MessageBox("You pressed the close button. Windows Store Apps do not implement a close button.", "Alert"); return;#endif Director::getInstance()->end();#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS) exit(0);#endif}效果如下：
三、demo 和 库下载
Github 传送门：https://github.com/baibai2013/PhysicsEditor-Loader-for-cocos2d-x-3.0
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