im正在制作“世界模拟器”程序。但是我不知道如何访问每个键的所有值。在我的World类中，我尝试执行方法“ drawWorld”，但是每当有两个或更多生物在同一个池中时，我的程序就不会看到此信息。示例输出：
0 [F2][F4][F8] 4 5 6 7 8 [F1]
10 11 12 13 [F5] 15 16 17 18 19
[F7] 21 22 23 24 25 26 27 28 29
30 [F6] 32 33 34 35 [F3] 37 38 39
40 41 42 43 44 45 46 47 48 49
50 51 52 53 54 55 56 57 58 59
60 61 62 63 64 65 66 67 68 69
70 71 72 73 74 75 76 77 78 79
80 81 82 83 84 85 86 87 88 89
90 91 92 93 94 95 96 97 98 99
其中每个F（F1，F2等）都是Fox对象，在此特定示例中，F2，F4和F8在同一池中（在worldMap中），但程序会像在不同池中一样显示它（而不是1 [F2 ] [F4] [F8] 4 5应该是1 [F2，F4，F8] 3 4）。你能告诉我我犯错了吗？我确信我的逻辑是：world.checkIfPoolHasOneOrMultipleOrganisms不好，我不确定是怎么回事
import Obiektowe.WorldSimulator.Animal.Fox;
public class WorldSimulatorDemo {
public static void main(String[] args) {
World world = new World();
world.drawWorld();
Organism fox = new Fox(world, 10, 10);
Organism foxxy = new Fox(world, 10, 10);
Organism foxter = new Fox(world, 10, 10);
Organism foxtser = new Fox(world, 10, 10);
Organism foxtedr = new Fox(world, 10, 10);
Organism foxterd = new Fox(world, 10, 10);
Organism foxtera = new Fox(world, 10, 10);
Organism foxtesr = new Fox(world, 10, 10);
for (int i = 0; i < 2; i++) {
world.makeTurn();
world.drawWorld();
}
}
}
package Obiektowe.WorldSimulator;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.Multimap;
import lombok.Data;
import java.util.*;
@Data
public class World {
List<Organism> organisms;
Multimap<Integer, Organism> worldMap;
private static boolean wasPopulatedWithEmptyEntries = false;
public World() {
this.organisms = new ArrayList<>();
this.worldMap = ArrayListMultimap.create();
populateMapWithEmptyEntries();
}
public void addOrganismToWorldMap(Organism o) {
Random random = new Random();
int randomNumber = random.nextInt(10);
worldMap.put(randomNumber, o);
}
public void makeTurn() {
System.out.println("\n ***** NEW ROUND ***** \n");
for (Organism o : organisms) {
o.action();
}
}
public boolean defineIfOrganismsOnTheSamePoolAreSameType(int pool) {
return false;
}
protected void drawWorld() {
int counter = 0;
for (Map.Entry<Integer, Organism> entry : worldMap.entries()) {
if (counter > 99
) {
break;
}
if (counter % 10 == 0) {
System.out.println();
}
if (entry.getValue() == null) {
System.out.print(" " + counter + " ");
} else {
// System.out.print(entry.getValue() + ",");
checkIfPoolHasOneOrMultipleOrganisms(entry.getValue());
}
counter++;
}
}
private void checkIfPoolHasOneOrMultipleOrganisms(Organism entryValue) {
List<String> organismList = new LinkedList<>();
StringBuilder stringBuilder = new StringBuilder();
String formatedValue;
organismList.add(entryValue.toString());
if (organismList.size() == 1) {
System.out.print(organismList);
}
if (organismList.size() == 2) {
for (String string : organismList) {
stringBuilder
.append(string)
.append(",");
}
formatedValue = stringBuilder.toString();
System.out.print(formatedValue);
}
}
private void populateMapWithEmptyEntries() {
for (int i = 0; i < 100; i++) {
worldMap.put(i, null);
}
}
}
import lombok.Data;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
@Data
public abstract class Organism {
protected World world;
protected int strength;
protected int speed;
public Organism(final World world, final int strength, final int speed) {
this.world = world;
this.strength = strength;
this.speed = speed;
getWorld().getOrganisms().add(this);
}
protected abstract void action();
protected abstract void collision();
protected abstract void draw();
}
package Obiektowe.WorldSimulator.Animal;
import Obiektowe.WorldSimulator.Organism;
import Obiektowe.WorldSimulator.World;
import lombok.Data;
import lombok.Getter;
import lombok.Setter;
import java.util.Random;
@Getter
@Setter
@Data
public abstract class Animal extends Organism {
public Animal(final World world, final int strength, final int speed) {
super(world, strength, speed);
// this.coordinates = world.worldMap[worldCoordinateX][worldCoordinateY];
}
@Override
protected void action() {
}
@Override
protected abstract void collision();
protected abstract void move();
@Override
protected abstract void draw();
@Override
public String toString() {
return "Animal";
}
}
package Obiektowe.WorldSimulator.Animal;
import Obiektowe.WorldSimulator.Organism;
import Obiektowe.WorldSimulator.World;
import lombok.Data;
import java.util.Map;
import java.util.Random;
@Data
public class Fox extends Animal {
protected int id;
protected static int idCcounter;
private boolean isAdded = false;
public Fox(final World world, final int strength, final int speed) {
super(world, strength, speed);
idCcounter++;
id = idCcounter;
}
@Override
protected void action() {
checkIfOrganismWasAddedToWorldMap();
move();
}
@Override
protected void collision() {
}
@Override
protected void move() {
int currentOrganismPosition = 0;
int newOrganismPosition;
for (Map.Entry<Integer, Organism> entry : getWorld().getWorldMap().entries()) {
if (entry.getValue() != null && entry.getValue().equals(this)) {
currentOrganismPosition = entry.getKey();
}
}
newOrganismPosition = randomlyChangePosition(currentOrganismPosition);
getWorld().getWorldMap().remove(currentOrganismPosition, this);
getWorld().getWorldMap().put(newOrganismPosition, this);
}
private int randomlyChangePosition(int currentOrganismPosition) {
final int NUMBER_TO_MOVE_LEFT_BY_1 = -1;
final int NUMBER_TO_MOVE_RIGHT_BY_1 = 1;
final int NUMBER_TO_MOVE_UP_BY_1 = -10;
final int NUMBER_TO_MOVE_DOWN_BY_1 = 10;
final int MIN_WORLDMAP_POSITION = 0;
final int MAX_WORLDMAP_POSITION = 99;
Random random = new Random();
int randomNumber = random.nextInt(4) + 1;
int newPosition;
switch (randomNumber) {
case 1:
//Move left
newPosition = NUMBER_TO_MOVE_LEFT_BY_1;
break;
case 2:
//Move right
newPosition = NUMBER_TO_MOVE_RIGHT_BY_1;
break;
case 3:
//Move up
newPosition = NUMBER_TO_MOVE_UP_BY_1;
break;
case 4:
//Move down
newPosition = NUMBER_TO_MOVE_DOWN_BY_1;
break;
default:
newPosition = 0;
}
if (currentOrganismPosition + newPosition >= MIN_WORLDMAP_POSITION &&
currentOrganismPosition + newPosition <= MAX_WORLDMAP_POSITION) {
return currentOrganismPosition + newPosition;
} else {
return 0;
}
}
@Override
protected void draw() {
}
protected void checkIfOrganismWasAddedToWorldMap() {
if (!isAdded) {
getWorld().addOrganismToWorldMap(this);
isAdded = true;
}
}
@Override
public String toString() {
return "F" + id;
}
}
我将方法更改为：
protected void drawWorld() {
int counter = 0;
for (Map.Entry<Integer, Collection<Organism>> entry : worldMap.asMap().entrySet()) {
Collection<Organism> valuesForKey = entry.getValue();
if (counter % 10 == 0) {
System.out.println();
}
if (valuesForKey.size() == 1) {
System.out.print(" " + counter + " ");
} else {
printValuesWithoutNullEntry(valuesForKey);
}
counter++;
}
}
private void printValuesWithoutNullEntry(Collection<Organism> organisms) {
final int INDEX_WHERE_NULL_PHRASE_ENDS = 7;
System.out.print("[" + organisms.toString().substring(INDEX_WHERE_NULL_PHRASE_ENDS));
}