What does getWorld().getObjects(Rocket.class) return if there are no objects of class Rocket in the world? It doesn't seem to be null...
GreenGoo wrote ...
2013/5/8
Checking if there is an actor in the world
getObjects() returns a List of the object you are looking for. If there is no actor of that class, it returns a List with a size of zero.
getWorld().getObjects(Rocket.class) != 0) says an error : incomparable types Java.util.List and int
no, there's a method you forgot to call.
Change: (getWorld().getObjects(Rocket.class) != 0)
To: (getWorld().getObjects(Rocket.class).size() != 0)
Like how arrays have a variable called length (arrayName.length), Lists have a size, which is called by that size method.
Your welcome
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