I bring a part from the problem. Please help me this part // //FIXME file header

ID: 3920279 • Letter: I

Question

I bring a part from the problem. Please help me this part

//
//FIXME file header comment

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileWriter;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.ArrayList;

import java.util.Random;
import java.util.Scanner;

//FIXME class header comment

public class WaTor {


/**
* This is the main method for WaTor simulation.

* Based on: http://home.cc.gatech.edu/biocs1/uploads/2/wator_dewdney.pdf

* This method contains the main simulation loop. In main the Scanner

* for System.in is allocated and used to interact with the user.

*

* @param args (unused)

*/
public static void main(String[] args) {


//scanner and random number generator for use throughout

Scanner input = new Scanner(System.in);

Random randGen = new Random();

//values at the same index in these parallel arrays correspond to the

//same creature


//a value equal or greater than 0 at a location indicates a fish of

//that age at that location.
int[][] fish = null;


//true at a location indicates that the fish moved during the current

//chronon
boolean[][] fishMoved = null;

//a value equal or greater than 0 at a location indicates a shark of

//that age at that location
int[][] sharks = null;


//true at a location indicates that the shark moved during the current

//chronon
boolean[][] sharksMoved = null;


//a value equal or greater than 0 indicates the number of chronon

//since the shark last ate.
int[][] starve = null;

//an array for simulation parameters

//to be used when saving or loading parameters in Milestone 3

int[] simulationParameters = null;


//welcome message

//Ask user if they would like to load simulation parameters from a file.

//If the user enters a y or Y as the only non-whitespace characters

//then prompt for filename and call loadSimulationParameters

//TODO in Milestone 3



//prompts the user to enter the simulation parameters

if ( simulationParameters == null) {

simulationParameters = new int[Config.SIM_PARAMS.length];

for ( int i = 0; i < Config.SIM_PARAMS.length; i++) {

System.out.print("Enter " + Config.SIM_PARAMS[i] + ": ");

simulationParameters[i] = input.nextInt();
}

input.nextLine(); //read and ignore remaining newline
}


//if seed is > 0 then set the random number generator to seed

if (simulationParameters[indexForParam("seed")] > 0) {

randGen.setSeed(simulationParameters[indexForParam("seed")]);
}


//save simulation parameters in local variables to help make code

//more readable.

int oceanWidth = simulationParameters[indexForParam("ocean_width")];

int oceanHeight = simulationParameters[indexForParam("ocean_height")];

int startingFish = simulationParameters[indexForParam("starting_fish")];

int startingSharks = simulationParameters[indexForParam("starting_sharks")];

int fishBreed = simulationParameters[indexForParam("fish_breed")];

int sharksBreed = simulationParameters[indexForParam("sharks_breed")];

int sharksStarve = simulationParameters[indexForParam("sharks_starve")];

//create parallel arrays to track fish and sharks

fish = new int[oceanHeight][oceanWidth];

fishMoved = new boolean[oceanHeight][oceanWidth];

sharks = new int[oceanHeight][oceanWidth];

sharksMoved = new boolean[oceanHeight][oceanWidth];

starve = new int[oceanHeight][oceanWidth];

//make sure fish, sharks and starve arrays are empty (call emptyArray)

//TODO Milestone 1

//place the initial fish and sharks and print out the number

//placed

int numFish = 0;

int numSharks = 0;

//TODO Milestone 1

int currentChronon = 1;


//simulation ends when no more sharks or fish remain

boolean simulationEnd = numFish <= 0 || numSharks <= 0;

while ( !simulationEnd){

//print out the locations of the fish and sharks

//TODO Milestone 1

//prompt user for Enter, # of chronon, or 'end'

//Enter advances to next chronon, a number

//entered means run that many chronon, (TODO Milestone 2),

//'end' will end the simulation

System.out.print("Press Enter, # of chronon, or 'end': ");

String response = input.nextLine().trim();

if (response.equalsIgnoreCase("end")) {

break; //leave simulation loop
}


//clear fishMoved and sharksMoved from previous chronon

//TODO Milestone 1


//call fishSwimAndBreed

//TODO Milestone 2


//call sharksHuntAndBreed

//TODO Milestone 2


//increment current chronon and count the current number of fish and sharks

//TODO Milestone 1

//if all the fish or sharks are gone then end simulation

simulationEnd = numFish <= 0 || numSharks <= 0;
};


//print the final ocean contents

//TODO Milestone 1


//Print out why the simulation ended.

if ( numSharks <= 0 ) {

System.out.println("Wa-Tor simulation ended since no sharks remain.");
}
else if ( numFish <= 0 ){

System.out.println("Wa-Tor simulation ended since no fish remain.");
}
else {

System.out.println("Wa-Tor simulation ended at user request.");
}

//If the user was prompted to enter simulation parameters

//then prompt the user to see if they would like to save them.

//If the user enters a y or Y as the only non-whitespace characters

//then prompt for filename and save, otherwise don't save parameters.

//call saveSimulationParameters to actually save the parameters to the file.

//If saveSimulationParameters throws an IOException then catch it and

//repeat the code to prompt asking the user if they want to save

//the simulation parameters.

//TODO Milestone 3



//Always prompt the user to see if they would like to save a

//population chart of the simulation.

//If the user enters a y or Y as the only non-whitespace characters

//then prompt for filename and save, otherwise don't save chart.

//call savePopulationChart to save the parameters to the file.

//If savePopulationChart throws an IOException then catch it and

//repeat the code to prompt asking the user if they want to save

//the population chart.

//TODO Milestone 3

input.close();
}

Explanation / Answer

SOLUTION:

According to the given data the following code follows;

CODE:

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileWriter;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.ArrayList;

import java.util.Random;

import java.util.Scanner;

public class WaTor {

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

Random randGen = new Random();
int[][] fish = null;

boolean[][] fishMoved = null;

int[][] sharks = null;

boolean[][] sharksMoved = null;

int[][] starve = null;

int[] simulationParameters = null;

if ( simulationParameters == null) {

simulationParameters = new int[Config.SIM_PARAMS.length];

for ( int i = 0; i < Config.SIM_PARAMS.length; i++) {

System.out.print("Enter " + Config.SIM_PARAMS[i] + ": ");

simulationParameters[i] = input.nextInt();
}

input.nextLine(); //read and ignore remaining newline
}

if (simulationParameters[indexForParam("seed")] > 0) {

randGen.setSeed(simulationParameters[indexForParam("seed")]);
}

int oceanWidth = simulationParameters[indexForParam("ocean_width")];

int oceanHeight = simulationParameters[indexForParam("ocean_height")];

int startingFish = simulationParameters[indexForParam("starting_fish")];

int startingSharks = simulationParameters[indexForParam("starting_sharks")];

int fishBreed = simulationParameters[indexForParam("fish_breed")];

int sharksBreed = simulationParameters[indexForParam("sharks_breed")];

int sharksStarve = simulationParameters[indexForParam("sharks_starve")];

fish = new int[oceanHeight][oceanWidth];

fishMoved = new boolean[oceanHeight][oceanWidth];

sharks = new int[oceanHeight][oceanWidth];

sharksMoved = new boolean[oceanHeight][oceanWidth];

starve = new int[oceanHeight][oceanWidth];

int numFish = 0;

int numSharks = 0;

int currentChronon = 1;

boolean simulationEnd = numFish <= 0 || numSharks <= 0;

while ( !simulationEnd)

System.out.print("Press Enter, # of chronon, or 'end': ");

String response = input.nextLine().trim();

if (response.equalsIgnoreCase("end")) {

break;

}

simulationEnd = numFish <= 0 || numSharks <= 0;
};

if ( numSharks <= 0 ) {

System.out.println("Wa-Tor simulation ended since no sharks remain.");

} else if ( numFish <= 0 ){

System.out.println("Wa-Tor simulation ended since no fish remain.");

}
else {

System.out.println("Wa-Tor simulation ended at user request.");
}

input.close();
}

public class WatorWorld {


private Grid<Actor> theWorld;
private static Color oceanColor;

static {
oceanColor = new Color(50, 50, 255);
}

public static Color getOceanColor() {
return oceanColor;
}

public WatorWorld(int rows, int cols, double fractionFish, double fractionSharks){
theWorld = new WrappedBoundedGrid<Actor>(rows, cols);
reset(fractionFish, fractionSharks);
}


public void reset(double fractionFish, double fractionSharks){
ArrayList<Location> occupiedCells = theWorld.getOccupiedLocations();
for(Location loc : occupiedCells){
theWorld.get(loc).removeSelfFromGrid();
}
Shark.resetNumSharks();
Fish.resetNumFish();
populateWorld(fractionFish, fractionSharks);
}

private void populateWorld(double fractionFish, double fractionSharks){
double totalFractionCreatures = fractionFish + fractionSharks;
if(totalFractionCreatures > 1) {
// too many creatures. scale each
fractionFish = fractionFish / totalFractionCreatures;
fractionSharks= fractionSharks / totalFractionCreatures;
}
int numFish = (int) (fractionFish * getNumSpots());
int numSharks = (int) (fractionSharks * getNumSpots());
if(numFish + numSharks < getNumSpots() / 2)
populateDefinite(numFish, numSharks);
else
populateIndefinite(numFish, numSharks);
}

private void populateIndefinite(int numFish, int numSharks) {
ArrayList<Location> locs = new ArrayList<Location>();
for(int r = 0, rLimit = theWorld.getNumRows(); r < rLimit; r++)
for(int c = 0, cLimit = theWorld.getNumCols(); c < cLimit; c++)
locs.add(new Location(r, c));
Collections.shuffle(locs);
for(int i = 0; i < numFish; i++)
new Fish().putSelfInGrid(theWorld, locs.get(i));
for(int i = numFish, limit = numFish + numSharks; i < limit; i++)
new Shark().putSelfInGrid(theWorld, locs.get(i));
}

private void populateDefinite(int numFish, int numSharks) {
loopToPlace(numFish, true);
loopToPlace(numSharks, false);
}

private void loopToPlace(int num, boolean placeFish){
int placed = 0;
Random r = new Random();
ArrayList<Location> locsUsed = new ArrayList<Location>();
while(placed < num){
int row = r.nextInt(theWorld.getNumRows());
int col = r.nextInt(theWorld.getNumCols());
Location loc = new Location(row, col);
if(theWorld.get(loc) == null){
placed++;
Actor result = placeFish ? new Fish() : new Shark();
result.putSelfInGrid(theWorld, loc);
locsUsed.add(loc);
}
}
}

public void step(){
ArrayList<Location> occupiedLocations = theWorld.getOccupiedLocations();
Collections.shuffle(occupiedLocations);
for(Location loc : occupiedLocations){
Actor a = theWorld.get(loc);
// in case eaten
if(a != null)
a.act();
}
}


public int getNumFish(){
return Fish.getNumFish();
}

public int getNumSharks(){
return Shark.getNumSharks();
}

public Color getColor(int row, int col){
Actor a = theWorld.get(new Location(row, col));
if(a == null)
return oceanColor;
else
return a.getColor();
}

getNumRows(){
return theWorld.getNumRows();
}

   public int getNumCols(){
return theWorld.getNumCols();
}

public String toString(){
StringBuilder b = new StringBuilder();
for(int r = 0, rLimit = theWorld.getNumRows(); r < rLimit; r++){
for(int c = 0, cLimit = theWorld.getNumCols(); c < cLimit; c++){
Actor a = theWorld.get(new Location(r, c));
if(a == null)
b.append('.');
else
b.append( a.getChar() );
}
b.append(' ');
}
return b.toString();
}
    public int getNumSpots(){
return theWorld.getNumRows() * theWorld.getNumCols();
}

}

Navigate

I bought a car this August, and every week I get an e-mail from the company to r

I built a game to play mancala, however, I want to make it so the player can cho

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.

I bring a part from the problem. Please help me this part // //FIXME file header

Question

Explanation / Answer

Related Questions

Navigate