July 2018
Intermediate to advanced
400 pages
12h 14m
English
Content preview from Kotlin Programming: The Big Nerd Ranch Guide, First Edition
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Constructing Instances
A class declaration is like a blueprint. Blueprints contain the details for how to construct a building, but they are not a building. Your Player class declaration works similarly: So far, a player has not been constructed – you have only created the (so far, quite sparse) blueprint.
When you start a new game of NyetHack, the main function is called, and one of the first things that you will want to do is create a player character to play the game. To construct a player so that it can be used in NyetHack, you must instantiate it – create an instance of it – by calling its constructor. In Game.kt, where variables are declared in the main function, instantiate a Player, as shown:
Listing 12.2 Instantiating ...
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