void LevelFifteen::callbackC(Node* sender) { auto visibleSize = Director::getInstance()->getVisibleSize(); auto pictureName = 1 + rand() % 27; auto str = String::createWithFormat("%d.png", pictureName)->getCString(); auto ballTwo2 = Sprite::createWithSpriteFrameName(str); ballTwo2->setPosition(Vec2(visibleSize.width / 2.0f, visibleSize.height - 90)); PhysicsBody* ballBodyTwo = nullptr; if (pictureName <= 9) { ballBodyTwo = PhysicsBody::createBox(ballTwo2->getContentSize(), PHYSICSBODY_MATERIAL_DEFAULT); } else if (pictureName > 9 && pictureName <= 18) { ballBodyTwo = PhysicsBody::createCircle(ballTwo2->getContentSize().width / 2.0f, PHYSICSBODY_MATERIAL_DEFAULT); } else if (pictureName > 18 && pictureName <= 21) { Vec2 vec[] = { Vec2(-22.50000, 22.00000), Vec2(24.00000, 10.00000), Vec2(-10.00000, -24.00000) }; ballBodyTwo = PhysicsBody::createPolygon(vec, 3); } else if (pictureName > 21 && pictureName <= 24) { Vec2 vec[] = { Vec2(-15.50000, 15.00000), Vec2(15.50000, 6.00000), Vec2(-7.00000, -15.50000) }; ballBodyTwo = PhysicsBody::createPolygon(vec, 3); } else if (pictureName > 24 && pictureName <= 27) { Vec2 vec[] = { Vec2(-8.00000, 8.00000), Vec2(7.50000, 3.00000), Vec2(-4.00000, -7.50000) }; ballBodyTwo = PhysicsBody::createPolygon(vec, 3); } //是否设置物体为静态 //ballBodyTwo->setDynamic(false); ballBodyTwo->getShape(0)->setRestitution(1.0f); ballBodyTwo->getShape(0)->setFriction(0.0f); ballBodyTwo->getShape(0)->setDensity(1.0f); ballBodyTwo->setGravityEnable(false); ballBodyTwo->setCategoryBitmask(2);// 分类掩码 ballBodyTwo->setCollisionBitmask(1 | 2 | 4 | 8);// 碰撞掩码 ballBodyTwo->setContactTestBitmask(1 | 8);// 接触测试掩码 ballBodyTwo->addMass(1000.0f); int flag = CCRANDOM_0_1() * 2; auto num = 0; switch (flag) { case 0: num = -1; break; case 1: num = 1; break; default: break; } auto force1 = Vec2(CCRANDOM_0_1()*10000.0f*num, -300000.0f); ballBodyTwo->applyImpulse(force1); ballTwo2->setPhysicsBody(ballBodyTwo); this->addChild(ballTwo2); }
void CCutScene::clipPoly(PhysicsShapePolygon* shape, Point normal, float distance) { PhysicsBody* body = shape->getBody(); int count = shape->getPointsCount(); int pointsCount = 0; Point* points = new Point[count + 1]; Vector2dVector vcPoints; vcPoints.clear(); Vector2d v2Point(0, 0); for (int i=0, j=count-1; i<count; j=i, ++i) { Point a = body->local2World(shape->getPoint(j)); float aDist = a.dot(normal) - distance; if (aDist < 0.0f) { points[pointsCount] = a; ++pointsCount; } Point b = body->local2World(shape->getPoint(i)); float bDist = b.dot(normal) - distance; if (aDist*bDist < 0.0f) { float t = std::fabs(aDist)/(std::fabs(aDist) + std::fabs(bDist)); Vec2 v2Tmp = a.lerp(b, t); points[pointsCount] = v2Tmp; ++pointsCount; } } Point center = PhysicsShape::getPolyonCenter(points, pointsCount); for (int i = 0; i < pointsCount; i++) { points[i] = body->world2Local(points[i]); vcPoints.push_back(Vector2d(points[i].x, points[i].y)); } PhysicsBody* polyon = PhysicsBody::createPolygon(points, pointsCount); CFoodCut* pNode = (CFoodCut*)(body->getNode()); std::vector<int> vMaterials; vMaterials.clear(); vMaterials = pNode->getMaterials(); MATERIAL_ID eId = MI_MAX; if (vMaterials.size() != 0) { eId = (MATERIAL_ID)vMaterials[0]; } CFoodCut *filledPolygon = CFoodCut::create(eId, vcPoints, pNode->getPanziIndex(), pNode->getTouchedIndex()); filledPolygon->setPhysicsBody(polyon); int nTmp = rand() % 50 + 50; int nTmpRotate = rand() % 30 - 60; filledPolygon->setPosition(body->getPosition()); //filledPolygon->setRotation(filledPolygon->getRotation() + nTmpRotate); filledPolygon->getPhysicsBody()->setTag(_sliceTag); filledPolygon->getPhysicsBody()->setGravityEnable(false); polyon->setVelocity(body->getVelocityAtWorldPoint(center)); //polyon->setAngularVelocity(body->getAngularVelocity()); polyon->setTag(_sliceTag); float fMass = polyon->getMass(); float fV = 80; float fImpulse = fMass * fV; float fTmpX = (float)(Random() % 30) / 100.0f - 0.15f; float fTmpY = (float)(rand() % 30) / 100.0f - 0.15f; polyon->applyImpulse((normal + Vec2(fTmpX, fTmpY)) * -fImpulse); polyon->setLinearDamping(0.8f); addChild(filledPolygon, 80); filledPolygon->setBirthTime(getCurTime()); m_vCutFoods.push_back(filledPolygon); m_nSliceCount ++; delete[] points; }