Zoo Animals, Design Patterns and UML Diagrams- Project 2 of OOAD

1. Jitendra Marndi
2. Madhusudhan Aithal Mahabhaleshwara
3. Raj Chandak

This project is written in C++. The code can be compiled with any C++ compiler with support of C++11 or later. We have used GCC version 8.2.1 compiler on CentOS 8 to build and test the program. Makefile provided here makes building and testing easy. Follow following steps sequentially to get the source code, build and test the program.

1. In a command line terminal, run the below code to clone this repository.

git clone git@github.com:MasterJEET/zoo.git

2. Now cd into the 'zoo' directory and type make. This will create an executable.

cd zoo
make

3. Now program is ready for execution.

./zoo

4. To record output of the program into a file, type

make test

Above command will write output of the program to the file 'dayatthezoo.out'.

In this section we briefly describe the directory structure and files and their relevance in the context of implementation of 'Strategy' and 'Observer' patterns. All the header files which contain class declaration (definition as well in some cases) reside in inc directory. All the definitions (not defined in header files) of classes are kept in src directory. Furthermore, all classes (headers only) representing animal species have been kept in inc/animals/animalspecies. Similarly corresponding source files (.cpp) have been kept in src/animals/animalspecies. Note that NOT all classes have corresponding source file. RoamBehaviour and NoiseBehaviour can be found inside roam and noise folders.

Both the roaming behavior and the sound of animals have been implemented using 'Strategy pattern'. For this RoamBehaviour and NoiseBehaviour interfaces have been created. Walk, Run and Sprint classes implement RoamBehaviour and similarly Meow, Roar, Snarl, Bark, Howl, Trumpet, Growl and Grunt classes implement NoiseBehaviour. Animal class has one member each for RoamBehaviour and NoiseBehaviour. The setter methods have been provided in Animal class to set these behaviors.

For this one Observable interface and one Observer interface have been created. Observable has three public method declarations: RegisterObserver, RemoveObserver and NotifyObs 4DC6 ervers. Zookeeper class, which implements the Observable interface, implements these functions. Similarly Observer has one public method Update which is implemented by the new class ZooAnnouncer.
Corresponding files for all the interfaces and classes can be found in the source code directory as described earlier.