The Prac Exam for COMP1400 will take place in labs in Week 13. <\/p>\n
The questions below are a sample<\/strong> of the kinds of questions you will receive in the test.<\/p>\n Whiffle ball is a single-player game. The rules are as follows:<\/p>\n Your task is to create a Download the BlueJ project prac-exam-sample-q2<\/a>.<\/p>\n This project is part of a database for a veternarian’s practice. It implements a Your task is to write a Your class should which implements the following:<\/p>\n Example usage: VaccinationTracker tracker = new VaccinationTracker(3); Download the BlueJ project prac-exam-sample-q3<\/a>.<\/p>\n In it you will find the class Your job is to implement a base The base The class should implement two public methods:<\/p>\n In the base The are specialised weapon subclasses should modify this default behaviour: <\/p>\n A It should have the constructor:<\/p>\n and any other methods you think are necessary.<\/p>\n A When a boulder hits, it should kill the target immediately. <\/p>\n It should have the constructor:<\/p>\n and any other methods you think are necessary.<\/p>\n A It should have the constructor:<\/p>\n and any other methods you think are necessary.<\/p>\n These are just example instructions. Do NOT submit your answers to these sample questions.<\/strong><\/p>\n You will be submitting your solutions online in the same way you submitted your assignments:<\/p>\n NOTE:<\/strong> You can submit as often as you like. Only the last submission will be marked. Do NOT leave it to the last minute<\/strong>. Submit each question as you go. Marks will be awarded for partial solutions, so always try to submit something even if it doesn’t work.<\/p>\n","protected":false},"excerpt":{"rendered":" The Prac Exam for COMP1400 will take place in labs in Week 13. Please make sure you turn up to your designated lab time. You will not be allowed to sit the exam at another time. The exam will be open book, so you will have access to the web and any texts you care […]<\/p>\n","protected":false},"author":80,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[630],"tags":[],"class_list":["post-305","post","type-post","status-publish","format-standard","hentry","category-lab"],"_links":{"self":[{"href":"https:\/\/blogs.unsw.edu.au\/comp1400\/wp-json\/wp\/v2\/posts\/305","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.unsw.edu.au\/comp1400\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.unsw.edu.au\/comp1400\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.unsw.edu.au\/comp1400\/wp-json\/wp\/v2\/users\/80"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.unsw.edu.au\/comp1400\/wp-json\/wp\/v2\/comments?post=305"}],"version-history":[{"count":21,"href":"https:\/\/blogs.unsw.edu.au\/comp1400\/wp-json\/wp\/v2\/posts\/305\/revisions"}],"predecessor-version":[{"id":322,"href":"https:\/\/blogs.unsw.edu.au\/comp1400\/wp-json\/wp\/v2\/posts\/305\/revisions\/322"}],"wp:attachment":[{"href":"https:\/\/blogs.unsw.edu.au\/comp1400\/wp-json\/wp\/v2\/media?parent=305"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.unsw.edu.au\/comp1400\/wp-json\/wp\/v2\/categories?post=305"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.unsw.edu.au\/comp1400\/wp-json\/wp\/v2\/tags?post=305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nYou have 2 hours to complete this exam. There are three questions. Each question is worth equal marks, but they are not of equal difficulty. Start each question in a separate BlueJ project. See the end of this post for details on how to submit your solutions.<\/p>\nQuestion 1 – Whiffle Ball<\/h2>\n
\n
WhiffleBall<\/code> class which implements these rules. It should include the following public methods:<\/p>\n\n
WhiffleBall(int target)<\/code> which starts a new game with the given target<\/li>\n\n
getScore()<\/code> returns your current score<\/li>\ngetTarget()<\/code> returns your target score<\/li>\ngetMovesRemaining()<\/code> returns the number of moves left<\/li>\nhaveWon()<\/code> returns true if the game is over and you have achieved the target, false otherwise<\/li>\n<\/ul>\n<\/li>\n\n
shoot()<\/code> perform the shoot action.<\/li>\nleap(int height)<\/code> perform the leap action to the height given.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\nQuestion 2 – Cats<\/h2>\n
Cat<\/code> class which is used to represent a cat and keep track of the year in which it was last vaccinated.<\/p>\nVaccinationTracker<\/code> class which scans a list of cats to find which ones have not been vaccinated recently. The frequency of vaccinations is given in years in the constructor of the class. <\/p>\n\n
VaccinationTracker(int frequency)<\/code> which creates a new VaccinationTracker with the specified freqency.<\/li>\nVaccinationTracker()<\/code> which creates a new VaccinationTracker with the default frequency of 5 years.<\/li>\nrequiresVaccination(int year, ArrayList list)<\/code> which takes as parameters the current year and a list of cats. It should return another list containing those cats whose last vaccination was at least as long ago as the frequency specified in the constructor OR who have never been vaccinated at all.<\/li>\n<\/ul>\n
\n
\n Cat ginger = new Cat(\"Ginger\");
\n ginger.setLastVaccination(2008);
\n Cat tom = new Cat(\"Tom\");
\n tom.setLastVaccination(2007);
\n Cat lolCat = new Cat(\"LolCat\"); \/\/ never vaccinated
\n Cat angus = new Cat(\"Angus\");
\n angus.setLastVaccination(2009);
\n ArrayList cats = new ArrayList();
\n cats.add(ginger);
\n cats.add(tom);
\n cats.add(lolCat);
\n cats.add(angus);<\/p>\n
\n ArrayList filtered = tracker.requiresVaccination(2011, cats);
\n<\/code>
\nAfter this code executes, filtered<\/code> should equal [ginger, tom, lolCat]<\/code>
and the list cats<\/code> should be unchanged: [ginger, tom, lolCat, angus]<\/code>.<\/p>\nQuestion 3 – Battle<\/h2>\n
Player<\/code> which represents a player in a Player-vs-Player fighting game. It contains code to implement the player’s health, strength and the weapon they are wielding. It also provides an attack()<\/code> method which allows one player to attack another. Do not modify<\/strong> this class.<\/p>\nWeapon<\/code> class and with three subclasses: PoisonedWeapon<\/code>, Boulder<\/code> and LifeDrainer<\/code>. The details of these classes is given below:<\/p>\nWeapon<\/h3>\n
Weapon<\/code> class has a fixed probability of hitting (expressed as a percentage) and a fixed damage value (in health points). These values should be set in a constructor:<\/p>\n\n
public Weapon(int hitProb, int damage)<\/code><\/li>\n<\/ul>\n\n
public int hitProbability(Player attacker, Player target)<\/code> which returns the probability that the specified target can hit the victim.<\/li>\npublic void hit(Player attacker, Player target)<\/code> which implements the result of the attacker hitting the target<\/li>\n<\/ul>\nWeapon<\/code> class, hitProbability<\/code> should return the percentage given in the constructor and hit<\/code> should inflict the damage given in the constructor on the target.<\/p>\nPoisonedWeapon<\/h3>\n
PoisonedWeapon<\/code> has the same hit probabilty and damage as a normal weapon but has the additional effect of removing one point of the target’s strength when it hits.<\/p>\n\n
public PoisonedWeapon(int hitProb, int damage)<\/code><\/li>\n<\/ul>\nBoulder<\/h3>\n
Boulder<\/code> has a hit probability the same as a normal weapon, but it only applies if the attacker’s strength is greater than the target’s. If it is equal or less, the hit probability is zero. <\/p>\n\n
public Boulder(int hitProb)<\/code> – the hitProb is the probability of hitting a weaker<\/strong> opponent.<\/li>\n<\/ul>\nLifeDrainer<\/h3>\n
LifeDrainer<\/code> has the same hit probability and damage as a normal weapon, but has the additional feature that a successful hit heals the attacker by as many health points as it removes from the target.<\/p>\n\n
public LifeDrainer(int hitProb, int damage)<\/code><\/li>\n<\/ul>\nSubmitting your code<\/h2>\n
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