讲解：SWEN20003、Software Engineerin

SWEN20003 Object Oriented Software Development Project 2, Semester 1, 2019The University of MelbourneDepartment of Computer Science and Software EngineeringSWEN20003 Object Oriented Software DevelopmentProject 2, Semester 1, 2019Released: Monday 29th of AprilProject 2A due: Friday 10th of May, 7:00pmProject 2B due: Friday 31st of May, 7:00pmOverviewIn this project, you will create a graphical real-time strategy game in the Java programminglanguage, continuing from your work in Project 1. We will provide a full working solution forProject 1; you are welcome to use all or part of it, provided you add a comment explaining whereyou found the code.This is an individual project. You can discuss it with other students, but all submitted codemust be your own work. You can use any platform and tools you like to develop the game, but werecommend using the Eclipse IDE, since that is what we are supporting in class.You will not be required to design any aspect of the game itself; this document should provide allnecessary information about how the game works. You will, however, be required to design theclasses for your software solution before you implement it.There are two parts to this project, with different submission dates.The first task, Project 2A, requires that you produce a class design demonstrating how you planto implement the game. This should be submitted in the form of a UML diagram showing all theclasses you plan to implement, the relationships (e.g. inheritance and associations) between them,and their attributes, as well as their primary public methods. (Methods such as getters and settersneed not be explicitly included.) If you so choose, you may show the relationships separately tothe class members, but you must use correct UML notation. Please submit as PDF only.The second task, Project 2B, is to complete the implementation of the game as described in therest of this specification. You do not have to follow your class design; it is there to encourage youto think about object-oriented principles before you start programming. If you do end up changingyour design, we ask that you produce an updated UML diagram and submit it with your project.1SWEN20003 Object Oriented Software Development Project 2, Semester 1, 2019Shadow BuildGame overviewShadow Build is a strategy game where the player must build structures on an alien planet andtrain units to mine the planet for the precious resource unobtainium. The game takes place ona large map containing different kinds of terrain and resources. Broadly speaking, the game isdivided into units that can be controlled to travel to different parts of the map, buildings that canbe controlled to create new units, and resources that certain types of units can collect.The two resources are metal and unobtainium. The goal of the game is to collect unobtainium asefficiently as possible; it has no other purpose. Creating buildings and units costs a certain amountof metal.The game mapThe map contains background tiles, some which are solid and cannot be moved through by units,and others which are not solid. The map should be loaded in the same manner as in Project 1.Some tiles are now occupied, which means that buildings may not be created such that the centreof the building lies on them. This is a property implemented in the same way as the solid propertyfrom Project 1.For Project 2, you will additionally have a file objects.csv; this file contains a list of units,buildings, and resources that should be created at the start of the game. It is in comma-separatedvalue (CSV) format, and contains lines of the following form:commandcentre,812,748The first entry is the name of the object to be created, followed by the x coordinate and the ycoordinate it should be created at.UnitsThere are four types of units in this game. All units can be selected by left-clicking within 32pixels of them; only one unit can be selected at a time, and if you click away from any unit, theselected unit (if there is one) should be deselected. If there are multiple units close to a click, youmay choose any one to be selected. When a unit is selected, right-clicking should make the unitmove towards the location that was clicked until the unit reaches that location.A unit that is selected should have a highlight drawn under it; this can be found in the filehighlight.png. Units can move through buildings and resources. The scoutThe scout moves the fastest out of any unit, but has no other special attributes. The scoutshould move at a rate of 0.3 pixels per millisecond.2SWEN20003 Object Oriented Software Development Project 2, Semester 1, 2019 The builderThe builder can create factories to train trucks. When the builder is selected and the 1 key ispressed, the builder starts building at a cost of 100 metal. After 10 seconds, a factory shouldbe created at the builder’s current location. The builder should not move during this time.If there is not enough metal available, pressing the 1 key should do nothing.The builder should move at a rate of 0.1 pixels per millisecond. The engineerThe engineer can mine metal and unobtainium. When the engineer has spent 5 secondsnear a resource, the engineer starts carrying some of the resource, beginning at 2. Whenthis happens, the engineer should start moving directly towards the nearest command centre.When the engineer reaches the command centre, they should drop the resource off, and theamount should be added to the player’s total. The engineer should then start moving directlyback towards the resource.The engineer should move at a rate of 0.1 pixels per millisecond. The truckThe truck can create command centres. It should behave similarly to the builder, except thatit should take 15 seconds, cost no metal, and when the command centre is complete the truckshould be destroyed.The truck should move at a rate of 0.25 pixels per millisecond.ResourcesResources are located at different parts of the map. They begin with a certain amount of therelevant resource which is depleted when engineers mine them. When the resource has none of theresource left, it should be destroyed.3SWEN20003 Object Oriented Software Development Project 2, Semester 1, 2019 The metal mineThe metal mine begins with 500 metal.The unobtainium mineThe unobtainium mine begins with 50 unobtainium.BuildingsBuildings are either already on the map, or can be constructed by units. They can be selected inthe same way as units; a building and a unit cannot both be selected at the same time. If a unitand a building are close together, the unit should be selected first.When a building is selected, it should have a highlight drawn under it, given by thefile highlight large.png. The command centreThe command centre can train (create) most units when selected. When the 1 key is pressed,a scout should begin training at a cost of 5 metal. When the 2 key is pressed, a builder unitshould begin training at a cost of 10 metal. When the 3 key is pressed, an engineer shouldbegin training at a cost of 20 metal.A 代写SWEN20003作业、Software Engineering作业代做、Java实验作业代写、Java程序语言作业unit takes 5 seconds to train, and only one unit can be trained at a time. When the timeis up, the unit should be created at the building’s location. The factoryThe factory can train trucks in the same manner as the command centre. When the 1 key ispressed, a truck should begin training at a cost of 150 metal.4SWEN20003 Object Oriented Software Development Project 2, Semester 1, 2019 The pylonThe pylon cannot be built. Instead, they are already on the map. When a unit comes within32 pixels of the pylon, the pylon becomes activated and should change to the active image(permanently). Each active pylon should allow all engineers to carry 1 additional resource.The cameraThe camera should behave similarly to Project 1, except that it should follow the currently selectedunit or building. If the player presses the W, A, S, and D keys, the camera should stop followingthe selected unit, and move 0.4 pixels per millisecond up, left, down, or right respectively.The text displayThe player needs to know some information about the game. At the coordinate (32,32), the textMetal: \nUnobtainium: should be drawn, with the appropriate amountslisted. When a unit or building that can create other units or buildings is selected, the actionsassociated with the 1, 2, and 3 keys should be drawn at the coordinate (100,32). For example, thecommand centre should draw 1- Create Scout\n2- Create Builder\n3- Create Engineer\n.Implementation checklistThis project may seem daunting. As there are a lot of things you need to implement, we haveprovided a feature checklist, ordered roughly in the order we think you should implement them in,together with the marks each feature is worth:1. The initial objects are loaded and visible on screen (1 mark)2. All units can be selected and deselected, and move correctly (1 mark)3. Engineer mines the resources correctly (1 mark)4. The text display is correct (1 mark)5. Command centre can create units (1 mark)6. Builder can create factories (1 mark)7. Factory can create trucks (0.5 marks)8. Truck can create command centres (0.5 marks)9. Pylons activate when a unit is near them (0.5 marks)10. Pylons allow engineers to mine faster (0.5 marks)5SWEN20003 Object Oriented Software Development Project 2, Semester 1, 2019CustomisationOptional: we want to encourage creativity with this project. We have tried to outline every aspectof the game design here, but if you wish, you may customise any part of the game, including thegraphics, types of units, buildings, resources, game mechanics, etc. You can also add entirely newfeatures. However, to be eligible for full marks, you must implement all of the features in the aboveimplementation checklist.For those of you with far too much time on your hands, we will hold a competition for the bestgame extension or modification, judged by the lecturer and tutors. The winning three will bedemonstrated at the final lecture, and there will be a prize for our favourite. Past modifications haveincluded drastically increasing the scope of the game, implementing jokes and creative game design,adding polish to the game, and even introducing networked gameplay. If you would like to enterthe competition, please email the head tutor, Eleanor McMurtry, at mcmurtrye@unimelb.edu.auwith your username and a short description of the modifications you came up with. I can’t wait tosee what you’ve done!The supplied packageYou will be given a package, oosd-project2-package.zip, which contains all of the graphics andother files you need to build the game. You can use these in any way you like.Submission and markingTechnical requirements The program must be written in the Java programming language. The program must not depend upon any libraries other than the Java standard library andthe Slick library. The program must compile fully without errors. Every public method, attribute, and class must have Javadoc comments as explained in laterlectures.Submission will take place through the LMS. Please zip your project folder in its entirety, andsubmit this .zip file. Do not submit a .rar, .7z, .tar.gz, or any other type of compressedfolder. Especially do not submit one of these files that has simply been renamed to have a .zipextension, as then we will be unable to open your file.1Ensure all your code is contained in this folder.1This may sound ridiculous, but it has happened several times in the past!6SWEN20003 Object Oriented Software Development Project 2, Semester 1, 2019Good Coding StyleGood coding style is a contentious issue; however, we will be marking your code based on some ofthe following criteria: You should not go back and comment your code after the fact. You should be commentingas you go. You should be taking care to ensure proper use of visibility modifiers. Unless you have a verygood reason for it, all instance variables should be private. Any constant should be defined as a static final variable. Don’t use magic numbers! Make sure each class makes sense as a cohesive whole. A class should contain all of the dataand methods relevant to its purpose. Make sure no single class is too large. Responsibilities should be carefully delegated to keepthe code comprehensible.Extensions and late submissionsIf you need an extension for the project, explaining your situation with some supporting documentation (medical certificate, academic adjustmentplan, wedding invitation). If an extension has been granted, you may submit via the LMSas usual; please do however email Eleanor once you have submitted your project.The project is due at 7:00pm sharp. Any submissions received past this time (from 7:01pmonwards) will be considered late unless an extension has been granted. There will be no exceptions.There is a penalty of 1 mark for a late project, plus an additional 1 mark per 24 hours. If you submitlate, you must email Eleanor with your student ID so that we can ensure your late submission ismarked correctly.MarksProject 2 is worth 22 marks out of the total 100 for the subject. Project 2A is worth 6 marks.– Correct UML notation for methods (1 mark)– Correct UML notation for attributes (1 mark)– Correct UML notation for associations (1 mark)– Good breakdown into classes (1 mark)– Sensible delegation of methods and attributes (1 mark)– Appropriate use of inheritance and interfaces (1 mark) Project 2B is worth 16 marks.– Features implemented correctly: 8 marks (see Implementation checklist for details)7SWEN20003 Object Oriented Software Development Project 2, Semester 1, 2019– Coding style, documentation, and good object-oriented principles: 8 marks Delegation: breaking the code down into appropriate classes (2 marks) Use of methods: avoiding repeated code and overly complex methods (1 mark) Cohesion: classes are complete units that contain all their data (1 mark) Coupling: interactions between classes are not overly complex (1 mark) General code style: visibility modifiers, magic numbers, commenting etc. (1 mark) Use of documentation (javadocs) (1 mark)转自：http://www.7daixie.com/2019052248576140.html