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For a computer game the rewards for the player as he/she progresses through the game are:
Entry level: Lamp worth n points
Intermediate level: magic mat m points
Advanced level: treasure chest which can be filled with lamps or mats
Here we apply the composite pattern
Client: computer game
I believe that the component are the levels (entry, intermediate and advanced)
Composite: Rewards
Leaf: lamp,magic mat,chest
Operation: getPoints(), fillChest()
Are these correct?
A Composite is typically a tree/collection of objects. The same operations you can perform on the individual objects can also be performed on the collection. Additionally, the object can typically be stand-alone or contain more objects and operations on the containing object will be performed on the objects is contains.
So if that is how you plan to use your Composite objects, then yes it sounds correct.