Java代写 | 4CCS1PPA Programming Practice and Applications

本次Java代写是完成一个模拟动植物生态的程序,包括捕食、生长等

4CCS1PPA Programming Practice and Applications
Coursework 3: Predator/Prey Simulation
Michael K¨olling, Josh Murphy, Jeffery Raphael
Questions? [email protected]
Your task is to extend a predator/prey simulation. You should use the foxes-and-rabbits-handout
project (available for download from KEATS) as a basis for your own project, and modify and
extend it to make it more interesting. Note that this is slightly different from the book project,
so please use the version from KEATS, not from the book projects.
You must replace the Fox and Rabbit classes with different kinds of predator and prey to simulate
a different habitat (for example, under water, in a jungle, or in a fantasy world). You may add
additional classes to those included in the existing project.
This project is a pair programming task. You must work in pairs. Information about pair programming
is provided separately. We will not accept submissions by individuals.
1 Core tasks
You should aim at completing all core tasks. They are as follows.
• Your simulation should have at least five different kinds of acting species. At least two of
these should be predators (they eat another species), and at least two of them should not be
predators (they may eat plants). Plants can either be assumed to always be available (as in
the original project), or they can be simulated (see below).
• At least two predators should compete for the same food source.
• Some or all of the species should distinguish male and female individuals. For these, the
creatures can only propagate when a male and female individual meet. (“Meet” means they
need to be within a specified distance to each other, for example in a neighbouring cell.)
You will need to experiment with the parameters for breeding probability to create a stable
population.
• You should keep track of the time of day. At least some creatures should exhibit different
behaviour at some time of the day (for example: they may sleep at night and not move
during that time).
You should implement the core tasks first before you move on to the extension tasks.
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2 Challenge tasks
Once you have finished the core tasks, implement one or more extension tasks. You can either
choose from the following suggestions, or invent your own. You will be graded on a maximum of
four extensions.
• Add plants. Plants grow at a given rate, but they do not move. Some creatures eat plants.
They will die if they do not find their food plant.
• Add weather. Weather can change, and it influences the behaviour of some simulated aspects.
For example, grass may not grow without rain, or predators cannot see well in fog.
• Add disease. Some animals are occasionally infected. Infection can spread to other animals
when they meet.
If you invent your own extension tasks, check with your class supervisor before implementing
them. You can get their comments to ensure they your idea is not too simple or too difficult.
To get full marks on this assignment you must demonstrate exceptional technical aptitude with
the challenge tasks you implement.
3 Submission and Deadline
The submission consists of two parts: your code and a report documenting it. The code and report
must be submitted before the deadline, by both members of your pair. Both the source code
and the report should clearly state the names of both authors.
The Code
You have to submit a Jar of your project to the “Assignment 3: Code Submission” link in the
assignment 3 section on the PPA KEATS page, before the due date. The Jar file must contain
your source code, i.e., the *.java files. Your code will be assessed for:
1. Program Correctness —The application meets all of the program specifications, i.e., the
student has completed all of the base tasks including following submission instructions (e.g.,
the student submitted a Jar file of their BlueJ project).
2. Code Elegance —The application is written in such a way that the code is reusable and
efficient (i.e., memory usage and complexity). The application appropriately uses loops
and functions to reduce code complexity and/or repeated code. The application does not
have hard-coded solutions or poorly designed solutions. A poorly designed solution is overly
complicated, utilises excessive amounts of memory or utilises a slower approach to a problem.
3. Documentation —The application is sufficiently documented. Good documentation/comments
should explain what the code does and how it does it. Comments can also be used to highlight
nuances in your solution, e.g., a segment of code that only works under certain conditions.
4. Readability —The application is easy to understand and uses good programming practices.
The report
The report must be submitted to the “Assignment 3: Report Submission” link in the assignment
3 section on the PPA KEATS page, before the deadline. The report should be no more than
four pages long. Marking the assignment will involve an interview in your lab class. More detail
about the interview will be provided separately. The report must clearly state the names and
student numbers of all students who worked on the submission. The report should also contain
the following :
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• A description of your simulation, including the types of species that you are simulating, their
behaviour and interactions.
• A list and description of all extension tasks you have implemented.
• Code limitations/problems, e.g., code segment that uses a hard coded solution.
The report will be marked out of 100. Additional details on how marks are given can be found
in the Marking Rubric. Once your submission is marked and written feedback has been returned
to you, you will have the opportunity to get additional verbal feedback on your submission from
your lab TAs.
4 Deadline
After submitting your work on KEATS, check that (1) your Jar file and report (pdf) has been
successfully uploaded and (2) that the Jar file contains all of your source files. This assignment
(code and report) is due Sunday 23rd February, 23:59.
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