         rightTree.physicsBody = SKPhysicsBody(rectangleOf: rightTree.size)
         rightTree.physicsBody?.categoryBitMask = PhysicsCategory.Environment
         rightTree.physicsBody?.contactTestBitMask = PhysicsCategory.LeftBomb | PhysicsCategory.RightBomb
+        rightTree.physicsBody?.collisionBitMask = PhysicsCategory.None
+        rightTree.physicsBody?.affectedByGravity = false
         addChild(rightTree)
     }
     

        leftTree.physicsBody = SKPhysicsBody(rectangleOf: leftTree.size)
        leftTree.physicsBody?.categoryBitMask = PhysicsCategory.Environment
        leftTree.physicsBody?.contactTestBitMask = PhysicsCategory.LeftBomb | PhysicsCategory.RightBomb
        addChild(leftTree)
        
        rightTree.position = CGPoint(x: 147.94, y: -62.205)

        middleTree.physicsBody = SKPhysicsBody(rectangleOf: middleTree.size)
        middleTree.physicsBody?.categoryBitMask = PhysicsCategory.Environment
        middleTree.physicsBody?.contactTestBitMask = PhysicsCategory.LeftBomb | PhysicsCategory.RightBomb
        middleTree.physicsBody?.collisionBitMask = PhysicsCategory.None
        middleTree.physicsBody?.affectedByGravity = false
        addChild(middleTree)
        
        leftTree.position = CGPoint(x: -147.94, y: -62.205)
