Exercises

Fig. Interfaces

Multichoices

Question 1

See Fig. above. Which of the following is true

PowerSource is Engine's optional interface

PowerSource is Car's required interface

PowerSource is Car's provided interface

PowerSource is Engine's provided interface

Question 2

A component can be tailored by

removing contracts

switching components that are connected to it

specializing a new component

altering its state

Question 3

Which of the following options could cause problems in the interactions of components

the differences in the programming language syntax

compilation process

synchronization

parameters and types

orchestration of services

Question 4

The interface of the component should specify

The input and output

The calling mode

The internal state of a callee

Pre- and post-conditions

Error situations and thrown exceptions

Question 5

Components interact by exploiting

messages

callbacks

twins

brokers

proxies

events

strategies

Design

Pre-lecture question - Architectural styles

Take a look at how wikipedia describes what architectural styles are. What makes them different from software patterns? You can also take quick look at the different styles listed underneath.

Draft a layered architecture as UML component diagram for an adventure game which runs on one computer only (so no online multiplayer stuff).

Try to separate layers, e.g., in UI, application logic, and data persistence layers. Each layer should communicate with its neighbouring layers through API. You are free to add more layers if feasible, you are also free to decide the level of detail. Examples of implementation details may include game characters, other in-game objects, NPCs, GUI menus, GPU processing, graphics engine. Your task is to decide which components your game consists of and divide them in appropriate layers.

Game logic changes are very likely to happen, so take that into account when planning your system's architecture. In addition, it would be nice to be able to use parts of the system as base for different games.

<https://en.wikipedia.org/wiki/Software_architecture#Architectural_styles_and_patterns>_

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