我正在创建一个基于文本的游戏系列，以练习 Java 技能并学习更高级的做事方法。
我的问题是，当用户选择拾取黄金或其他元素的选项时，黄金会添加到他们的余额中，但他们可以继续重复拾取相同的黄金
我想要发生的是让用户拿起黄金或元素，然后让选项消失，这样他们就不能继续拿起它。
我的代码很长，所以我也在寻找一种可能缩短它的方法，这将是一场漫长的游戏。
我的问题发生在
守卫军营方法
这是我的代码
package FTK;
import java.util.Scanner;
import java.util.ArrayList;
import java.util.List;
public class findTheKing {
Scanner scan = new Scanner(System.in);
Scanner enterScan = new Scanner(System.in);
String myWeapon, myArmor, playerName;
int myHP,myGold = 0, monsterHP;
List<String> inv = new ArrayList<String>();
public static void main(String[] args) {
findTheKing ftk;
ftk = new findTheKing();
ftk.playerSetUp();
ftk.brickRoad(); }
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
public void playerSetUp() {
myHP = 100;
myWeapon = "Not Equipped";
System.out.println("|---------------------------------------------------------------------------------------------|");
System.out.println("Enter your name.");
playerName = scan.nextLine();
System.out.println("Hello " + playerName + ", lets begin your adventure finding the king!");
enterScan.nextLine();
System.out.println("Your HP level is: " + myHP + ".");
System.out.println("Your current weapon is: " + myWeapon + ".");
System.out.println(inv);
enterScan.nextLine();
System.out.println("|---------------------------------------------------------------------------------------------|");
}
public void brickRoad() {
int choice;
System.out.println("|---------------------------------------------------------------------------------------------|");
System.out.println("You are standing in the woods near an old red brick road worn down from age.\n");
System.out.println("To the north following the brick road is a castle, king Solomani's castle.\n");
System.out.println("Far east of you is the General Goods store.\n");
System.out.println("Following the brick road south leads to a drawbridge, beyond that you can see a cave.\n");
System.out.println("West of you is a small clearing in the brush.");
System.out.println("|---------------------------------------------------------------------------------------------|");
enterScan.nextLine();
System.out.println("|---------------------------------------------------------------------------------------------|");
System.out.println("Where would you like to go?");
System.out.println("1 North");
System.out.println("2 East");
System.out.println("3 South");
System.out.println("4 West");
System.out.println("|---------------------------------------------------------------------------------------------|");
choice = scan.nextInt();
if(choice==1) {
System.out.println("|---------------------------------------------------------------------------------------------|");
System.out.println("You make your way up the long red brick road to the castle, ");
System.out.println("you find a horse and carriage out front, at the top of the steps there are");
System.out.println(" two guards at the door and a window slightly cracked open.");
System.out.println("|---------------------------------------------------------------------------------------------|");
enterScan.nextLine();
castle();
}
if(choice==2) {
System.out.println("|---------------------------------------------------------------------------------------------|");
System.out.println("Traveling along to the east you arrive at the General Goods store.\n");
System.out.println("The sign in the window says open for business.");
System.out.println("|---------------------------------------------------------------------------------------------|");
enterScan.nextLine();
generalGoodsStore();
}
if(choice==3) {
System.out.println("|---------------------------------------------------------------------------------------------|");
System.out.println("Following the red brick road south takes you to a drawbridge.");
System.out.println("|---------------------------------------------------------------------------------------------|");
enterScan.hasNextLine();
drawBridge();
}
if(choice==4) {
System.out.println("|---------------------------------------------------------------------------------------------|");
System.out.println("you push through the brush opening and find there is an old shack.");
System.out.println("|---------------------------------------------------------------------------------------------|");
enterScan.nextLine();
shack();
}
}
public void castle() {
int choice;
System.out.println("What's your next move?\n\n");
System.out.println("|---------------------------------------------------------------------------------------------|");
System.out.println("1: Sit in the carriage.");
System.out.println("2: Walk up the steps and talk to the guards.");
System.out.println("3: Sneak over to the window while the guards aren't watching.");
System.out.println("4: Go back.");
System.out.println("|---------------------------------------------------------------------------------------------|");
choice = scan.nextInt();
if (choice==1) {
System.out.println("|---------------------------------------------------------------------------------------------|");
System.out.println("You are now sitting in the carriage.");
System.out.println("You notice there is a shiny object hidden under the seat.");
System.out.println("|---------------------------------------------------------------------------------------------|");
}
if(choice==2) {
System.out.println("Apon aproaching the guards they greet you but they inform you that ");
System.out.println("you cannot curently enter the castle as the king is missing.");
}
if(choice==3) {
System.out.println("Now at the window you can see through the crack.");
System.out.println("Inside the window you can see the guard barracks.");
System.out.println("It looks as if there is a guard sleeping on a bed to the right of the room.");
enterScan.nextLine();
window();
}
if(choice==4) {
brickRoad();
}
}
public void drawBridge() {
int choice;
System.out.println("You arrived at the drawbridge. The bridge is currently up and locked");
System.out.println("The only way past is to find the key that unlocks the bridge.");
enterScan.nextLine();
System.out.println("Type your next action.");
System.out.println("1: Unlock bridge.");
System.out.println("2: Go back.");
choice = scan.nextInt();
if((choice==1) && (inv.contains("Key"))) {
//how can i test weather or not the player has obtained the key?
System.out.println("The bridge has unlocked and lowered, you can now cross!");
enterScan.nextLine();
cave();
}
else if (choice==1){
System.out.println("You do not have the key to unlock the bridge yet.");
enterScan.hasNextLine();
drawBridge();
}
if (choice==2) {
System.out.println("You go back to The brick road.");
enterScan.nextLine();
brickRoad();
}
}
public void shack() {
System.out.println("In front of the shack you see a pile of wood, to the left is the shack entrance.");
}
public void guardBarracks() {
int choice;
System.out.println("On the table to your right you find 13 gold!");
System.out.println("Left of you is a door.");
System.out.println("1: Pick .up gold");
System.out.println("2: Go through door.");
System.out.println("3: Go back.");
choice = scan.nextInt();
if( choice==1) {
myGold = myGold + 13;
System.out.println("You currently have: " + myGold + " gold coins.");
enterScan.nextLine();
guardBarracks();
}
if(choice==2) {
System.out.println("You are now in the castle's main hall.");
}
if(choice==3) {
window();
}
}
public void window() {
int choice;
System.out.println("You can quietly climb through the window or turn back.");
System.out.println("1: Climb through window.");
System.out.println("2: Go back");
choice = scan.nextInt();
if (choice==1) {
System.out.println("You are now in the guard barracks, be quiet!");
guardBarracks();
}
if (choice==2) {
System.out.println("You go back in front of the castle.");
castle();
}
}
public void generalGoodsStore() {
int choice;
System.out.println("Welcome, what can we help you with?\n");
System.out.println("1: Apple 10 gold (heals 8 HP)");
System.out.println("2: Chicken 18 gold (heals 15 HP)");
System.out.println("3: Shovel 68 gold");
System.out.println("4: bridge key 200 gold");
System.out.println("5: Go back");
System.out.println("What would you lke to buy?");
choice = scan.nextInt();
if ((choice==1) && (myGold >= 10)) {
inv.add("Apple");
myGold = myGold - 10;
System.out.println("You have purchased an apple, enjoy.\n" + "Your current gold is " + myGold);
enterScan.nextLine();
generalGoodsStore();
}
else if((choice==1) && (myGold < 10)) {
System.out.println("You do not have enough gold, sorry.");
enterScan.nextLine();
generalGoodsStore();
}
if ((choice==2) && (myGold >= 15)) {
inv.add("Chicken");
myGold = myGold - 15;
System.out.println("You have purchased some chicken, enjoy.\n" + "Your current gold is " + myGold);
enterScan.nextLine();
generalGoodsStore();
}
else if((choice==2) && (myGold < 15)) {
System.out.println("You do not have enough gold, sorry.");
enterScan.nextLine();
generalGoodsStore();
}
if ((choice==3) && (myGold >= 68)) {
inv.add("Shovel");
myGold = myGold - 68;
System.out.println("You have purchased a shovel, enjoy.\n" + "Your current gold is " + myGold);
enterScan.nextLine();
generalGoodsStore();
}
else if((choice==3) && (myGold < 68)) {
System.out.println("You do not have enough gold, sorry.");
enterScan.nextLine();
generalGoodsStore();
}
if ((choice==4) && (myGold >= 200)) {
inv.add("Key");
myGold = myGold - 200;
System.out.println("You have purchased the drawbridge key, have a safe journey.");
System.out.println("You might want to prepare for what lies past the bridge!.\n" +"Your current gold is " + myGold);
enterScan.nextLine();
generalGoodsStore();
}
else if((choice==4) && (myGold < 200)) {
System.out.println("You do not have enough gold, sorry.");
enterScan.nextLine();
generalGoodsStore();
}
if (choice==5) {
System.out.println("You leave the store and go back to the brick road.");
brickRoad();
}
}
public void cave() {
int choice;
System.out.println("Atlast, you are at the cave entrance!\n");
System.out.println("The door has been baricaded, looks like you will need an axe to get past\n");
System.out.println("There is a sign that says 'Keep Out' on an old wooden post.\n ");
System.out.println("On another sign that has faded almost past legibility you barely make out ");
System.out.println("the word 'DANGER'.\n");
System.out.println("There is a path on the right but you cannot see where it leads to.");
choice = scan.nextInt();
System.out.println("1: Destroy baricade and enter the old cave.");
System.out.println("2: Follow the path to wherever it leads.");
System.out.println("3: Go back. ");
if((choice==1) && (inv.contains("Axe")) ) {
System.out.println("Hurray, you destroyed the baricade and entered the cave!");
}
else if (choice==1) {
System.out.println("You need to find an axe to destroy the baricade.");
enterScan.nextLine();
cave();
}
if (choice==2) {
System.out.println("You follow the path");
path();
}
}
public void path() {
System.out.println("You reach the end of the path, there is nothing but dirt and \nrocks for as far as you can see.");
}
public void castleKitchen() {
inv.add("Kitchen knife");
System.out.println(inv);
}
public void fight() {
}
public void Attack(){
int playerDamage = 0;
if(myWeapon.equals("kitchen knife")) {
playerDamage = new java.util.Random().nextInt(5);
}
if(myWeapon.equals("axe")) {
playerDamage = new java.util.Random().nextInt(8);
}
System.out.println("You attacked the monster and gave " + playerDamage + "damage.");
monsterHP = monsterHP - playerDamage;
System.out.println("monsterHP: " + monsterHP);
if(monsterHP<1) {
win();
}
if(monsterHP>0) {
int monsterDamage;
monsterDamage = new java.util.Random().nextInt(4);
System.out.println("The monster attacked you and gave " + monsterDamage + " damage.");
myHP = myHP - monsterDamage;
System.out.println("Player HP: " + myHP + ".");
if(myHP<1) {
System.out.println("You have died.");
dead();
}
if(myHP>0) {
fight();
}
}
}
public void win() {
System.out.println("You kiled the monster");
}
public void dead() {
int choice;
System.out.println("Would you like to restart?\n");
System.out.println("1: Yes");
System.out.println("2: No");
choice = scan.nextInt();
if(choice==1) {
playerSetUp();
}
if(choice==2) {
Exit();
}
}
public void Exit() {
}
}
任何解决此问题的帮助将不胜感激。
最佳答案
您需要在代码中设置一个条件来确定玩家是否可以选择获取黄金。一旦金子被拿走，改变条件使选择不可用。一旦调用了一行代码，您就不会将其删除，而只是使其不可能多次遇到。
您当前的代码如下所示:
int choice;
System.out.println("On the table to your right you find 13 gold!");
System.out.println("Left of you is a door.");
System.out.println("1: Pick .up gold");
System.out.println("2: Go through door.");
System.out.println("3: Go back.");
这个想法是创建一个条件来显示一组不同的选择，具体取决于黄金是否已被拿走。
int choice;
boolean goldTaken = false;
if(goldTaken)
{
System.out.println("There is a table to your right.");
System.out.println("Left of you is a door.");
System.out.println("1: Go through door.");
System.out.println("2: Go back.");
}
else
{
System.out.println("On the table to your right you find 13 gold!");
System.out.println("Left of you is a door.");
System.out.println("1: Pick .up gold");
System.out.println("2: Go through door.");
System.out.println("3: Go back.");
}
// remember to change the conditional if the player chooses to take the gold
if( choice==1) {
goldTaken = true;
myGold = myGold + 13;
// ... the rest of your existing code
请记住，条件(在我的示例中为goldTaken)必须是全局变量，以便一旦更改该值，它就会在程序运行期间保持不变。
关于java - 使用后如何删除一行代码？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/60426244/