klondike-patterns

Introduction

Project belonging to the Master in Software Craftmanship, in which we apply the knowledge of software analysis and design. To do this, an mvc-based application must be created in which the SOLID principles and the Clean Code guide must be used, in addition to using Gamma design patterns (or suitable adaptations thereof) in C ++.

MVC - Model-View-Controller

Model

Patterns

• Builder (BoardBuilder)
• Singleton (FrenchDeckUtils)
• Fachade (Game)

Relevant principles

• SOLID - >Liskov substitution

  If Deck, Tableau and Foundation inherits from CardList then we should assure that the
  preconditions of derived classes are equal or weaker than those of Base. This can not be
  guaranteed for the push() and pushlist() methods where in cardlist it is possible to insert
  any letter but in the derivatives not.

  • Before:
    
  • After:
    

Controller

Patterns

• Builder (LogicBuilder)
• Visitor (GameControllerVisitor, GameController and deriveds, and implements view)

Relevant principles

• DRY (Don’t repeat yourself)

  In order for all game controllers to have a common code, a base class must be created, called GameController, to which everyone will extend, thus avoiding repetition of the code.

• SOLID -> DIP (Dependency inversion)

  To avoid cycles in the implementation of the visitor pattern , dependency inversion is applied on GameController and its derivatives and KlondikeView adding an interface called GameControllerVisitor.

• Double Dispatch

  For the implementation of the visitor pattern *, double dispatch ** must be applied between the corresponding implementation of the GameControllerVisitor and KlondieView.

View

Patterns

• Singleton Multitone (KlondikeRegistry, KlondikeView and deriveds)
• Singleton (IOUtils)
• Visitor (KlondikeView, KlondikeViewConsole implements GameControllerVisitor from controller model)
• Command (CommandDispatcher, Command and deriveds)
• Template method (Command and deriveds)
• Fachade (CommandDispatcher)

Relevant principles

• DRY (Don’t repeat yourself)

  In order for all command to have a common algorithm but implementing its own part, a base class must be created, called Command, to which everyone will inherit, thus avoiding repetition of the algorithm structure (Template method) .

• Double Dispatch

  For the implementation of the visitor pattern *, double dispatch ** must be applied between KlondieView and the corresponding implementation of the GameControllerVisitor

MVC DIAGRAM