我正在使用Xcode 7和Swift 2在iOS上制作基本游戏 . 我正在尝试向节点添加物理体 . 在用户的角色上，物理运行正常（没有崩溃，它运行相同） . 然而，当向障碍物添加物理时，障碍物不会出现......这是我的障碍代码：
let random = Int(arc4random_uniform(4))
var objectTexture = SKTexture()
var object = SKSpriteNode()
if random == 0 {
objectTexture = SKTexture(imageNamed: "coin")
object = SKSpriteNode(texture: objectTexture)
object.physicsBody = SKPhysicsBody(rectangleOfSize: objectTexture.size())
object.physicsBody!.categoryBitMask = ColliderType.Coin.rawValue
object.physicsBody!.contactTestBitMask = ColliderType.Coin.rawValue
object.physicsBody!.collisionBitMask = ColliderType.Coin.rawValue
}
if random != 0 {
objectTexture = SKTexture(imageNamed: "fryingPan")
object = SKSpriteNode(texture: objectTexture)
object.physicsBody = SKPhysicsBody(rectangleOfSize: objectTexture.size())
object.physicsBody!.categoryBitMask = ColliderType.Obstacle.rawValue
object.physicsBody!.contactTestBitMask = ColliderType.Obstacle.rawValue
object.physicsBody!.collisionBitMask = ColliderType.Obstacle.rawValue
}
//Setting up object
使用此代码，对象不会出现在屏幕上 . 但是，当我注释掉物理线条时，对象会按照指示出现在屏幕上 . 有谁知道我可能会出错？谢谢你的帮助 .
1 回答
组
object.physicsBody.affectedByGravity = false我猜重力将你的障碍物移出屏幕