【发布时间】：2014-12-04 03:30:00
【问题描述】：
所以我有一个类，其中包含一堆统计信息以及关于“游戏玩家”的信息。我正在尝试为通过 RNG 实现的某些统计目标实施模拟奖杯系统。
我有一个 2d int 数组，其中包含奖杯等级/级别的值，一旦实现将奖杯从铜牌升级到银牌等，还有一个相应的 2d String 数组，其中包含此类奖杯级别的标题。在测试似乎可以使用现在未使用的方法时，实际上只为某些类型提供了奖杯。我现在拥有的是一条我认为我需要遵循的路径才能让它发挥作用。我有一个名为getBadges(int requestedStat) 的方法，它采用另一个数组的索引值来查看该统计数据奖杯。在该方法中是一个 for 循环，它将方法的参数与两个 2d 数组进行比较，以确定 stat 的值（存储在另一个数组中）是否有资格获得铜牌、银牌或金奖。我的主要问题是我迷失了如何在不超出索引范围的情况下访问二维数组中的这些不同数据点。更不用说当我设置一堆if-else 语句时，我的测试输出总是产生奖杯的名称，但没有奖杯级别。像这样：
Healer: No Badge
Explorer: No Badge
Socialite: No Badge
Contributor: No Badge
随着技能点的提高，徽章等级也应提高（即从“无徽章”变为“青铜”等）。这是逻辑错误还是语法错误？尽管我在伪代码方面做出了努力，但我对代码中发生的事情感到非常困惑。这是Gamer 类：
package GamerProject;
import java.io.Serializable;
import java.util.Comparator;
public class Gamer implements Serializable, Comparable<Gamer> {
private String playerName;
private static final int HEALTH_POINTS_RESD = 23;
private static final int AREAS_VISITED = 200;
private static final int PLAYERS_ENCOUNTERED = 175;
private static final int MAPS_CREATED = 1500;
private static final int ITEMS_GATHERED = 20;
private static final int ITEMS_REPAIRED = 100;
private static final int ITEMS_MERGED = 125;
private static final int TOP_SCORES = 250;
private static final int DMG_POINTS_DEALT = 17;
private static final int MAPS_COMPLETED = 750;
private static final int LEVEL2 = 10000;
private static final int LEVEL3 = 25000;
private static final int LEVEL4 = 80000;
private static final int LEVEL5 = 150000;
private static final int LEVEL6 = 300000;
private static final int LEVEL7 = 1000000;
private static final int LEVEL8 = 2200000;
private static final int LEVEL9 = 4500000;
private static final int LEVEL10 = 10000000;
private static final int LEVEL11 = 20000000;
private static final int LEVEL12 = 35000000;
private final int[] gamerStatValues = new int[10];
private final int[] gamerActions = {HEALTH_POINTS_RESD, AREAS_VISITED, PLAYERS_ENCOUNTERED, MAPS_CREATED,
ITEMS_GATHERED, ITEMS_REPAIRED, ITEMS_MERGED, TOP_SCORES, DMG_POINTS_DEALT, MAPS_COMPLETED};
private final int[] expValues = {LEVEL2, LEVEL3, LEVEL4, LEVEL5, LEVEL6, LEVEL7,
LEVEL8, LEVEL9, LEVEL10, LEVEL11, LEVEL12};
private final int[][] badgePoints = {
{0, 2000, 10000, 30000, 100000, 200000},
{0, 50, 1000, 5000, 17000, 40000},
{0, 100, 1000, 2000, 10000, 30000},
{0, 3, 10, 20, 90, 150},
{0, 2000, 10000, 30000, 100000, 200000},
{0, 100, 1000, 5000, 15000, 40000},
{0, 100, 500, 2000, 10000, 40000},
{0, 20, 200, 1000, 5000, 20000},
{0, 2000, 10000, 30000, 100000, 300000},
{0, 10, 50, 200, 500, 5000}};
private final String[] badgeTitles = {"Healer: ", "Explorer: ", "Socialite: ", "Contributor: ",
"Hoarder: ", "Fixer: ", "Joiner: ", "Leader: ", "Punisher: ", "Obsessed: ",};
private final String[] badgeRanks = {"No Badge ", "Tin ", "Bronze ", "Silver ", "Gold ", "Platinum "};
Gamer() {
playerName = "";
}
public int getTotalExp() {
int totalExp = 0;
for (int i = 0; i < gamerStatValues.length; i++) {
totalExp += (gamerStatValues[i] * gamerActions[i]);
}
return totalExp;
}
public int getLevel() {
int playerLevel = 1;
int totalExp = getTotalExp();
for (int i = 0; i < expValues.length; i++) {
if (totalExp >= expValues[i]) {
playerLevel += 1;
//System.out.println(getTotalExp());
}
}
return playerLevel;
}
public String getBadge(int requestedStat) {
String badgeOutput = "";
//index = 0;
if (requestedStat >= 0 && requestedStat <=9) {
for (int i = 0; i < badgeRanks.length; i++) {//not sure how to get around going out of the array bounds
if (gamerActions[requestedStat] >= badgePoints[requestedStat][i]
&& gamerActions[requestedStat] < badgePoints[requestedStat][i + 1]) {
badgeOutput = badgeTitles[requestedStat] + badgeRanks[i];
} else if (gamerActions[requestedStat] >= badgePoints[requestedStat][i+1]
&& gamerActions[requestedStat] < badgePoints[requestedStat][i + 2]) {
badgeOutput = badgeTitles[requestedStat] + badgeRanks[i+1];
}
}
//did this as an extraneous solution. Still doesn't work
// if (gamerActions[requestedStat] >= badgePoints[requestedStat][index]
// && gamerActions[requestedStat] < badgePoints[requestedStat][index + 1]) {
// badgeOutput = badgeTitles[requestedStat] + badgeRanks[index];
// } else if (gamerActions[requestedStat] >= badgePoints[requestedStat][index+1]
// && gamerActions[requestedStat] < badgePoints[requestedStat][index + 2]) {
// badgeOutput = badgeTitles[requestedStat] + badgeRanks[index+1];
// } else if (gamerActions[requestedStat] >= badgePoints[requestedStat][index+2]
// && gamerActions[requestedStat] < badgePoints[requestedStat][index + 3]) {
// badgeOutput = badgeTitles[requestedStat] + badgeRanks[index+2];
// } else if (gamerActions[requestedStat] >= badgePoints[requestedStat][index+3]
// && gamerActions[requestedStat] < badgePoints[requestedStat][index + 4]) {
// badgeOutput = badgeTitles[requestedStat] + badgeRanks[index+3];
// } else if (gamerActions[requestedStat] >= badgePoints[requestedStat][index+4]
// && gamerActions[requestedStat] < badgePoints[requestedStat][index + 5]) {
// badgeOutput = badgeTitles[requestedStat] + badgeRanks[index+4];
// } else if (gamerActions[requestedStat] >= badgePoints[requestedStat][index+5]
// && gamerActions[requestedStat] < badgePoints[requestedStat][index + 6]) {
// badgeOutput = badgeTitles[requestedStat] + badgeRanks[index+5];
// } else {
// badgeOutput = badgeTitles[requestedStat] + badgeRanks[index+6];
// }
//
} else {
badgeOutput = "No Badges Available";
}
return badgeOutput;
}
//Incomplete Method
public String getBadges() {
String badgeOutput = "Badges: ";
for (int i = 0; i < badgeTitles.length; i++) {
// if (gamerActions[i]) {
//
// }
}
return badgeOutput;
}
public String getPlayerName() {
return playerName;
}
public int getHealthPointsResd() {
return gamerStatValues[0];
}
public int getAreasVisited() {
return gamerStatValues[1];
}
public int getPlayersEncountered() {
return gamerStatValues[2];
}
public int getMapsCreated() {
return gamerStatValues[3];
}
public int getItemsGathered() {
return gamerStatValues[4];
}
public int getItemsRepaired() {
return gamerStatValues[5];
}
public int getItemsMerged() {
return gamerStatValues[6];
}
public int getTopScores() {
return gamerStatValues[7];
}
public int getDmgPointsDealt() {
return gamerStatValues[8];
}
public int getMapsCompleted() {
return gamerStatValues[9];
}
//Unused Method
public void updateRandomGamerAction(int intValue) {
if (intValue == 0) {
gamerActions[0]+=1;
} else if (intValue == 1) {
gamerActions[1]+=1;
} else if (intValue == 2) {
gamerActions[2]+=1;
} else if (intValue == 3) {
gamerActions[3]+=1;
} else if (intValue == 4) {
gamerActions[4]+=1;
} else if (intValue == 5) {
gamerActions[5]+=1;
} else if (intValue == 6) {
gamerActions[6]+=1;
} else if (intValue == 7) {
gamerActions[7]+=1;
} else if (intValue == 8) {
gamerActions[8]+=1;
} else {
gamerActions[9]+=1;
}
}
public String setPlayerName(String playerName) {
this.playerName = playerName;
return this.playerName;
}
public int setHealthPointsResd(int healthPointsResd) {
if (healthPointsResd >= 0) {
gamerStatValues[0] = healthPointsResd;
return gamerStatValues[0];
} else {
return gamerStatValues[0];
}
}
public int setAreasVisited(int areasVisited) {
if (areasVisited >= 0) {
gamerStatValues[1] = areasVisited;
return gamerStatValues[1];
} else {
return gamerStatValues[1];
}
}
public int setPlayersEncountered(int playersEncountered) {
if (playersEncountered >= 0) {
gamerStatValues[2] = playersEncountered;
return gamerStatValues[2];
} else {
return gamerStatValues[2];
}
}
public int setMapsCreated(int mapsCreated) {
if (mapsCreated >= 0) {
gamerStatValues[3] = mapsCreated;
return gamerStatValues[3];
} else {
return gamerStatValues[3];
}
}
public int setItemsGathered(int itemsGathered) {
if (itemsGathered >= 0) {
gamerStatValues[4] = itemsGathered;
return gamerStatValues[4];
} else {
return gamerStatValues[4];
}
}
public int setItemsRepaired(int itemsRepaired) {
if (itemsRepaired >= 0) {
gamerStatValues[5] = itemsRepaired;
return gamerStatValues[5];
} else {
return gamerStatValues[5];
}
}
public int setItemsMerged(int itemsMerged) {
if (itemsMerged >= 0) {
gamerStatValues[6] = itemsMerged;
return gamerStatValues[6];
} else {
return gamerStatValues[6];
}
}
public int setTopScores(int topScores) {
if (topScores >= 0) {
gamerStatValues[7] = topScores;
return gamerStatValues[7];
} else {
return gamerStatValues[7];
}
}
public int setDmgPointsDealt(int dmgPointsDealt) {
if (dmgPointsDealt >= 0) {
gamerStatValues[8] = dmgPointsDealt;
return gamerStatValues[8];
} else {
return gamerStatValues[8];
}
}
public int setMapsCompleted(int mapsCompleted) {
if (mapsCompleted >= 0) {
gamerStatValues[9] = mapsCompleted;
return gamerStatValues[9];
} else {
return gamerStatValues[9];
}
}
public void setStatsToZero(){
for (int i = 0; i < gamerActions.length; i++) {
gamerActions[i] = 0;
}
}
public String statsString() {
return "Stats: " + "Health Points Restored = " + gamerStatValues[0]
+ ",\n Areas Visited = " + gamerStatValues[1] + ", PlayersEncountered = " + gamerStatValues[2]
+ ", Maps Created = " + gamerStatValues[3] + ",\n Items Gathered = " + gamerStatValues[4]
+ ", Items Repaired = " + gamerStatValues[5] + ", Items Merged = " + gamerStatValues[6]
+ ",\n Top Scores = " + gamerStatValues[7] + ", Damage Points Dealt = " + gamerStatValues[8]
+ ", Maps Completed = " + gamerStatValues[9] + '}';
}
public String shortDecription() {
return String.format("%16s: Level %2d, Experience Points: %,10d",
playerName, this.getLevel(), this.getTotalExp());
}
@Override
public String toString() {
return "Gamer{" + "Player Name = " + playerName + " Player Stats: "
+ "Health Points Restored = " + gamerStatValues[0]
+ ",\n Areas Visited = " + gamerStatValues[1] + ", PlayersEncountered = " + gamerStatValues[2]
+ ", Maps Created = " + gamerStatValues[3] + ",\n Items Gathered = " + gamerStatValues[4]
+ ", Items Repaired = " + gamerStatValues[5] + ", Items Merged = " + gamerStatValues[6]
+ ",\n Top Scores = " + gamerStatValues[7] + ", Damage Points Dealt = " + gamerStatValues[8]
+ ", Maps Completed = " + gamerStatValues[9] + '}';
}
@Override
public int compareTo(Gamer player) {
if (this.getTotalExp() > player.getTotalExp()) {
return 1;
} else if (this.getTotalExp() == player.getTotalExp()) {
return 0;
} else {
return -1;
}
}
}
这是我正在测试它的驱动程序：
package GamerProject;
import java.util.Random;
public class Program7Driver {
private static final int rngRange = 10;
private static final Gamer[] gamers = new Gamer[10];
private static final String[] gamerNames = {"BestGamer99", "CdrShepardN7",
"Gandalf_The_Cool", "SharpShooter01", "TheDragonborn", "SithLord01",
"MrWolfenstien", "Goldeneye007", "DungeonMaster91", "MasterThief","TheDarkKnight"};
public static void main(String[] args) {
Random rand = new Random();
for (int i = 0; i < gamers.length; i++) {
gamers[i] = new Gamer();
gamers[i].setPlayerName(gamerNames[i]);
gamers[i].setStatsToZero();
}
// for (int i = 0; i < 200000; i++) {
// int rng = rand.nextInt(rngRange);
// gamers[rng].setRandomGamerAction(rng);
// }
int count = 0;
for (int i = 0; i < 20000; i++) {
int rng = rand.nextInt(rngRange);
System.out.println(gamers[0].getBadge(count));
//System.out.println(gamers[0].toString());
//gamers[0].updateRandomGamerAction(rng);
if (rng == 0) {
gamers[0].setHealthPointsResd(gamers[0].getHealthPointsResd()+1);
} else if (rng == 1) {
gamers[0].setAreasVisited(gamers[0].getAreasVisited()+1);
} else if (rng == 2) {
gamers[0].setPlayersEncountered(gamers[0].getPlayersEncountered()+1);
} else if (rng == 3) {
gamers[0].setMapsCreated(gamers[0].getMapsCreated()+1);
} else if (rng == 4) {
gamers[0].setItemsGathered(gamers[0].getItemsGathered()+1);
} else if (rng == 5) {
gamers[0].setItemsRepaired(gamers[0].getItemsRepaired()+1);
} else if (rng == 6) {
gamers[0].setItemsMerged(gamers[0].getItemsMerged()+1);
} else if (rng == 7) {
gamers[0].setTopScores(gamers[0].getTopScores()+1);
} else if (rng == 8) {
gamers[0].setDmgPointsDealt(gamers[0].getDmgPointsDealt()+1);
} else {
gamers[0].setMapsCompleted(gamers[0].getMapsCompleted()+1);
}
count += 1;
if (count == 10) {
count -= 10;
}
// System.out.println(gamers[i].statsString());
}
}
}
【问题讨论】：
-
在你的for循环中，使用i
来防止数组越界异常 -
这就是我所拥有的。我需要使用
badgePoints防止越界异常，因为它会发生，但我不确定如何检查下一个元素而不出现异常。
标签： java arrays multidimensional-array logic