Usman Hashmi 13-SE-08

Should Not

• To design a new Software system quickly and efficiently

• To understand a new software system

Should Not

Should Not

• Speed up the development process: Reduce time consuption

• Reduce costs of application maintance• Allow developers to communicate. • Good quality products

Role of

Design PatternsSolve recurring design problems

Communication

• Awareness of Design Pattern

• Ease in understanding new process

Decomposing System into Objects

• Hardest Part

• Encapsulation, performance, dependencies, etc.

Maintainability and Reusability

• Focus on components

• Components, easy to reuse and maintain

Evolution

• Refactor Components, Things Evolve

• Easy to refactor Components

Creational Pattern in COD MW4Generation of Different Types of Enemy's with Different Weapons.

Creational Design Pattern

Factory

Design

Pattern

Creational Pattern in COD MW4Selection of Different Types of Weapon during playing.

Creational Design Pattern

Abstract Factory Design Pattern

Structural Pattern in COD MW4

Structural Design PatternDecorator

Design Pattern

Adding of Silencer ,red dot and Grande launcher in a gun(MP4).

Structural Pattern in COD MW4

Structural Design Pattern

Facade Design Pattern

Game core logic is creating the enemies inaction of our killing.

Behavioral Pattern in COD MW4

Behavioral Design PatternObserver

Design Pattern

Get the Key Press by Player to perform action.