Cocos2d，Box2D靜物直到輸入

Question

嘿傢伙我有一個問題在這裏，我如何創建一個身體，將不具有物理功能，直到我按下它？我在我的init

CCSprite *tail = [CCSprite spriteWithFile:@"Ball.jpg"]; 
[self addChild:tail z:1]; 

b2BodyDef tailBodyDef; 
tailBodyDef.type = b2_dynamicBody; 
tailBodyDef.position.Set(100/PTM_RATIO, 100/PTM_RATIO); 
tailBodyDef.userData = tail; 
tailBody = world->CreateBody(&tailBodyDef); 

b2CircleShape circle; 
circle.m_radius = 26.0/PTM_RATIO; 

b2FixtureDef tailShapeDef; 
tailShapeDef.shape = &circle; 
tailShapeDef.density = 1.0f; 
tailShapeDef.friction = 0.2f; 
tailShapeDef.restitution = 0.8f; 
tailBody->CreateFixture(&tailShapeDef); 

[self schedule: @selector(tick:)]; 

球會落屏幕的邊緣，在遊戲開始，但多數民衆贊成不是我想要的這個代碼。我希望它保持在同一個位置，直到我按下它。無論如何，我可以把物體放回去，直到我給出一些輸入？

Answer 1

還沒有嘗試過，但切換setActive屬性看起來很完美。

tailBody->setActive(NO); 

時退房 '激活' 節在這裏：http://www.box2d.org/manual.html#_Toc258082973