Creating a fight simulator -SOLUTION

Write a simple a fight simulator (in case you have never seen a "2-man" kombat sequence here is a video). Your program will have two opponents: an attacker (that only launches attacks) and a defender (that can only defend against the attacks). There's three types of attacks categorized by height: high, medium and low. (For stylistic reasons you should use class constants  (i.e.., final static int HIGH = 1;) whenever unchanging attributes are needed such  as these but because this is your first Object-Oriented program this requirement is waived for this assignment and won't be required  to do this until later assignments).There's three types of defenses: high, medium and low. If the heights of the attack and defence match then the attack is blocked. Otherwise the attack is counted as a 'hit'. The simulation runs a fixed number of attack-defense sequences (from 1 - 100 'rounds' of attacks and defenses). The user can determine the number of rounds at runtime. If a value outside the range is entered then the default number of rounds (ten) will be executed (no re-querying needed).
Also when the program is first run the user can determine the proportion of attacks that originate at the three different heights (e.g., high = 50%, medium = 30%, low = 20%). These three proportions must sum to 100% otherwise the program will use the defaults (equal probability of each type of attack - you don't have to have percentages that sum exactly to 100 in this case).
The defender will be entirely controlled by the computer. The 'unskilled' defender has an equal chance of employing one of the three types of defenses. A program that implements an 'intelligent' defender will analyze the pattern of attacks and adjust the probability of each type of defense being employed over time. (For example if the attacker always throws high attacks then the defender will eventually extrapolate the pattern and use high defenses more frequently). It is up to you to decide how many rounds are needed before the defender begins to adjust to  the pattern of attacks. And the value determining the adjustment period can be hard-coded (fixed) into the program (no user input needed at run-time). The minimum number of rounds needed should be one (with zero attacks thrown there is no pattern to analyze). Prior to analyzing and determining the pattern of attacks the defender should have an equal probability of employing each type of defense.
Exactly what constitutes 'intelligent' for this assignment? Because this isn't a formal class in Artificial Intelligence the definition is fairly broad: as long the program demonstrates the ability to adapt to the pattern of attackers and the marker can clearly see the pattern as the program executes (the display of statistics each round will be very useful for communicating this). If for instance the attacker throws only medium attacks, after the learning period is over the defender should eventually employ only medium height defenses (or at least have an extremely high probability of employing this type of defense). You can choose how many rounds will pass before the defender begins to adapt to the pattern.
Note: it is important that your printed output statements clearly demonstrate to your marker that features are working (e.g., that the attacker and defender generated something ( an attack/defense) and how that combination produced a result). Consequently your output must not only present the needed information but must also be reasonably formatted. The program output is even more crucial when you have implemented an intelligent defender. The marker must be able to see the effects of the defender adapting to the pattern of attacks otherwise you may not get credit for your work. He/she won't have the time to trace through your program.
You can either come up with your own algorithm for the defender or you can freely research algorithms online. In the latter case make sure you clearly cite all your sources. (Failing to list a source may be regarded as academic misconduct).
The program will tally a number of statistics and display them during each round *and* at the end of the simulation.  Here is the minimum amount of information to display:

Statistics displayed each round: the round number, the type of attack and defense chosen, the result of the attack-defense combination (hit or block).
Statistics displayed when the program ends:  the total number of successful attacks and blocks and the probabilities of each type of attack-defense at the end (the values for the attacker won't change but an intelligent defender's proportions should go from equal values to more closely reflect the proportions of the attacker).

In the assignment directory you can find a [text file] that are records of the output of the program. As you will see my 'intelligent' defender is not particularly 'intelligent' but it's sufficient for this class. Note however how the defender adapts after round 20, quite dramatically in this case because the probability of attacks is 100% for one of the 'heights'.
Program design [Click here for overview]: the program will consist of 3 Java source code files (Attacker, Defender, Manager). Each class definition must be in it's own file and that file name must match the class name.

  • The 'Manager' is not just the start or the 'driver' of the program (contains the 'main' method) but as the name implies it also acts as an intermediary between the other two classes (e.g., communicates to the defender the type of attack generated by the attacker). (The other two classes can send messages/invoke methods to each other if necessary).

  • The 'Attacker' will be responsible for generating attacks so it should track all information associated with attacking (e.g., numbers of each attack type generated).

  • Likewise the 'Defender' will receive the attack generated by the attacker, generate a defense and determine the result of the attack-defense combination. Also the defender should track information associated with defense (e.g., the numbers of each type of defense used).  Since the information for the attacks and defenses must be tracked by this class the methods for displaying the round-by-round report and the end of simulation report should be displayed here.

Full assignments not only have a more complex code implementation than mini-assignments but also you will be marked on non-functional requirements such as style and documentation. Consequently each full assignment will include a separate [marking checklist]
Using pre-written Java code
You will need to use the built in code class Random. Beyond that (and common sense operators and functions such as those for input/output and mathematical operators), unless you told otherwise, you will need to write your own code and cannot use other pre-written Java classes or operators.
Points to keep in mind:

  1. Due time: All assignments are due at 4 PM on the due dates listed on the course web page.  Late assignments or components of assignments will not be accepted for marking without approval for an extension beforehand. What you have submitted in D2L as of the due date is what will be marked.

  2. Extensions may be granted for reasonable cases by the course instructor with the receipt of the appropriate documentation (e.g., a doctor's note). Typical examples of reasonable cases for an extension include: illness or a death in the family. Cases where extensions will not be granted include situations that are typical of student life: having multiple due dates, work commitments etc. Tutorial instructors (TA's) will not be able to provide extension on their own and must receive permission from the course instructor first. (Note: Forgetting to hand your assignment or a component of your assignment in does not constitute a sufficient reason for handing your assignment late).

  3. Method of submission: You are to submit your assignment using D2L [help link]. Make sure that you [check the contents of your submitted files] (e.g., is the file okay or was it corrupted, is it the correct version etc.). It's your responsibility to do this! (Make sure that your submit your assignment with enough time before it comes due for you to do a check).

  4. Identifying information: All assignments should include contact information (full name and student ID number) at the very top of your program in the class where the 'main()' function/method resides.

  5. Collaboration: Assignments must reflect individual work, group work is not allowed in this class nor can you copy the work of others.  For more detailed information as to what constitutes academic misconduct (i.e., cheating) for this course please read the following [link].

  6. Execution: programs must run on the computer science network.  If you write you code in the lab and work remotely using a remote login program such as Putty or SSH. If you choose to install Java on your own computer then it is your responsibility to ensure that your program will run properly here. It's not recommended that you use an IDE for writing your programs but if you use one then make sure that you submit your program in the form of individual text ".java" files (one for each class that you define).

  7. Source code: in order to get any credit for your work you must submit all relevant dot-java files for the assignment (e.g., If you only submit your byte code files (e.g. Driver.class) then you will not be awarded any credit.

Powered by