我对java比较陌生，我必须在学校为一个项目构建一个简单的游戏，我试图从我的方法中得到一个变量，＆＃34; player1＆＃34;并在主要打印。我已经尝试了好几个小时，但似乎无法让它发挥作用。
CODE：
public class BoardGameProject
{ public static void main (String[] args)
{
Scanner keyboard = new Scanner (System.in);
System.out.println ("Welcome to My Board Game!");
System.out.println ("How many players are there? (4 max)");
int playerAmount = keyboard.nextInt();
if (playerAmount == 1)
{
player1();
}
else if (playerAmount == 2)
{
int p1rolls; // this is where I want to define the varibale "p1rolls" as the amount of rolls it takes to reach the end
int p2rolls;
player1();
player2();
if (p1rolls < p2rolls)
{
System.out.println ("Congratulations player 1, you won!");
System.out.println ("You made it in " + p1rolls + " rolls");
System.out.println ("Player 2 made it in " + p2rolls + " rolls");
}
else if (p2rolls < p1rolls)
{
System.out.println ("Congratulations player 2, you won!");
System.out.println ("You made it in " + p2rolls + " rolls");
System.out.println ("Player 1 made it in " + p1rolls + " rolls");
}
}
}
public static void player1()
{
Scanner keyboard = new Scanner (System.in);
int p1space = 0;
int p1health = 100;
int p1dollars = 0;
int rollValue = 0;
int p1rolls = 0;
System.out.println ("Player 1, Please Enter Your Name");
keyboard.nextLine();
String p1name = keyboard.nextLine();
System.out.println ("Would you like a tutorial on how to play? (type yes or no)");
String tutorial = keyboard.nextLine();
if ((tutorial .equals ("yes")))
{
System.out.println ("Okay, first the game will have you type roll to roll your die.");
System.out.println ("After that, depending on what number you got on your die, your character will move that far.");
System.out.println ("Certain spaces have traps and things to set you back so watch out! There are also spaces that give you bonuses such as extra health.");
System.out.println ("That should be enough for you to play. Have Fun! :)");
}
while (p1health > 0)
{
System.out.println (p1name + " it's your turn!");
System.out.println ("Type roll to roll your die");
String roll = keyboard.nextLine();
if (roll .equals ("roll"))
{
int rollDie = (int) (6*Math.random()+1);
rollValue = rollDie;
p1space = p1space + rollValue;
p1rolls = p1rolls +1;
if (p1space == 0)
{
System.out.println ("START");
}
else if (p1space == 1)
{
System.out.println ("SPACE 1");
}
else if (p1space == 2)
{
System.out.println ("SPACE 2");
System.out.println ("You found a med pack, +50 Health!");
p1health = p1health +50;
}
else if (p1space == 3)
{
System.out.println ("SPACE 3");
System.out.println ("You find a jetpack, move forward one space");
p1space = p1space +1;
}
else if (p1space == 4)
{
System.out.println ("SPACE 4");
System.out.println ("You are kidnapped, move back two spaces.");
p1space = p1space -2;
}
else if (p1space == 5)
{
System.out.println ("SPACE 5");
}
else if (p1space == 6)
{
System.out.println ("SPACE 6");
System.out.println ("You find $50!");
p1dollars = p1dollars +25;
}
else if (p1space == 7)
{
System.out.println ("SPACE 7");
System.out.println ("You find $100!");
p1dollars = p1dollars +100;
}
else if (p1space == 8)
{
System.out.println ("SPACE 8");
System.out.println ("You are shot by an enemy, -25 Health.");
p1health = p1health -25;
}
else if (p1space == 9)
{
System.out.println ("SPACE 9");
System.out.println ("You are shot by an enemy, -25 Health.");
p1health = p1health -25;
}
else if (p1space == 10)
{
System.out.println ("SPACE 10");
}
else if (p1space == 11)
{
System.out.println ("SPACE 11");
System.out.println ("You found a med pack, +25 Health!");
p1health = p1health +25;
}
else if (p1space == 12)
{
System.out.println ("SPACE 12");
}
else if (p1space == 13)
{
System.out.println ("SPACE 13");
System.out.println ("You find $50!");
p1dollars = p1dollars +50;
}
else if (p1space == 14)
{
System.out.println ("SPACE 14");
}
else if (p1space == 15)
{
System.out.println ("SPACE 15");
System.out.println ("You are shot by an enemy, -25 Health.");
p1health = p1health -25;
}
else if (p1space == 16)
{
System.out.println ("SPACE 16");
System.out.println ("You find $50!");
p1dollars = p1dollars +50;
}
else if (p1space == 17)
{
System.out.println ("SPACE 17");
}
else if (p1space == 18)
{
System.out.println ("SPACE 18");
System.out.println ("You are shot by an enemy, -25 Health.");
p1health = p1health -25;
}
else if (p1space == 19)
{
System.out.println ("SPACE 19");
System.out.println ("You are kidnapped, move back a space.");
p1space = p1space -1;
}
else if (p1space >= 20)
{
System.out.println ("--------------------------------------------------------------");
System.out.println ("Congratulations, you made it to the end!");
System.out.println ("You made it with:");
System.out.println (" " + p1health + " Health");
System.out.println (" " + p1dollars + " Dollars");
System.out.println (" " + p1rolls + " Rolls");
p1health = 0;
Player1Rolls (p1rolls); // im trying to get "p1rolls" into my method "Player1Rolls" here so I can print this number in main
}
if (p1dollars >= 300)
{
System.out.println ("You have enough money to purchase a med pack. Would you like to buy one? (type yes or no)");
String medPack = keyboard.nextLine();
if (medPack .equals ("yes"))
{
p1health = p1health +50;
p1dollars = p1dollars -300;
System.out.println ("Health +100");
System.out.println ("$300 removed");
}
}
}
else
{
System.out.println ("I'm sorry I didn't quite get that. Type roll to roll your die.");
}
}//end of while
}
public static void player2 ()
{
Scanner keyboard = new Scanner (System.in);
int p2health = 100;
int p2dollars = 0;
int p2space = 0;
int rollValue = 0;
int p2rolls = 0;
System.out.println ("Player 2, Please Enter Your Name");
keyboard.nextLine();
String p2name = keyboard.nextLine();
System.out.println ("Would you like a tutorial on how to play? (type yes or no)");
String tutorial = keyboard.nextLine();
if ((tutorial .equals ("yes")))
{
System.out.println ("Okay, first the game will have you type roll to roll your die.");
System.out.println ("After that, depending on what number you got on your die, your character will move that far.");
System.out.println ("Certain spaces have traps and things to set you back so watch out! There are also spaces that give you bonuses such as extra health.");
System.out.println ("That should be enough for you to play. Have Fun! :)");
}
while (p2health > 0)
{
System.out.println (p2name + " it's your turn!");
System.out.println ("Type roll to roll your die");
String roll = keyboard.nextLine();
if (roll .equals ("roll"))
{
int rollDie = (int) (6*Math.random()+1);
rollValue = rollDie;
p2space = p2space + rollValue;
p2rolls = p2rolls +1;
if (p2space == 0)
{
System.out.println ("START");
}
else if (p2space == 1)
{
System.out.println ("SPACE 1");
}
else if (p2space == 2)
{
System.out.println ("SPACE 2");
System.out.println ("You found a med pack, +50 Health!");
p2health = p2health +50;
}
else if (p2space == 3)
{
System.out.println ("SPACE 3");
System.out.println ("You find a jetpack, move forward one space");
p2space = p2space +1;
}
else if (p2space == 4)
{
System.out.println ("SPACE 4");
System.out.println ("You are kidnapped, move back two spaces.");
p2space = p2space -2;
}
else if (p2space == 5)
{
System.out.println ("SPACE 5");
}
else if (p2space == 6)
{
System.out.println ("SPACE 6");
System.out.println ("You find $50!");
p2dollars = p2dollars +25;
}
else if (p2space == 7)
{
System.out.println ("SPACE 7");
System.out.println ("You find $100!");
p2dollars = p2dollars +100;
}
else if (p2space == 8)
{
System.out.println ("SPACE 8");
System.out.println ("You are shot by an enemy, -25 Health.");
p2health = p2health -25;
}
else if (p2space == 9)
{
System.out.println ("SPACE 9");
System.out.println ("You are shot by an enemy, -25 Health.");
p2health = p2health -25;
}
else if (p2space == 10)
{
System.out.println ("SPACE 10");
}
else if (p2space == 11)
{
System.out.println ("SPACE 11");
System.out.println ("You found a med pack, +25 Health!");
p2health = p2health +25;
}
else if (p2space == 12)
{
System.out.println ("SPACE 12");
}
else if (p2space == 13)
{
System.out.println ("SPACE 13");
System.out.println ("You find $50!");
p2dollars = p2dollars +50;
}
else if (p2space == 14)
{
System.out.println ("SPACE 14");
}
else if (p2space == 15)
{
System.out.println ("SPACE 15");
System.out.println ("You are shot by an enemy, -25 Health.");
p2health = p2health -25;
}
else if (p2space == 16)
{
System.out.println ("SPACE 16");
System.out.println ("You find $50!");
p2dollars = p2dollars +50;
}
else if (p2space == 17)
{
System.out.println ("SPACE 17");
}
else if (p2space == 18)
{
System.out.println ("SPACE 18");
System.out.println ("You are shot by an enemy, -25 Health.");
p2health = p2health -25;
}
else if (p2space == 19)
{
System.out.println ("SPACE 19");
System.out.println ("You are kidnapped, move back a space.");
p2space = p2space -1;
}
else if (p2space >= 20)
{
System.out.println ("--------------------------------------------------------------");
System.out.println ("Congratulations, you made it to the end!");
System.out.println ("You made it with:");
System.out.println (" " + p2health + " Health");
System.out.println (" " + p2dollars + " Dollars");
System.out.println (" " + p2rolls + " Rolls");
p2health = 0;
Player2Rolls(p2rolls);// im trying to get "p2rolls" into my method "Player2Rolls" here so I can print this number in main
}
if (p2dollars >= 300)
{
System.out.println ("You have enough money to purchase a med pack. Would you like to buy one? (type yes or no)");
String medPack = keyboard.nextLine();
if (medPack .equals ("yes"))
{
p2health = p2health +50;
p2dollars = p2dollars -300;
System.out.println ("Health +100");
System.out.println ("$300 removed");
}
}
}
else
{
System.out.println ("I'm sorry I didn't quite get that. Type roll to roll your die.");
}
}//end of while
}
public static int Player1Rolls (int p1rolls)
{
return (p1rolls); // this is the method that i want to print in main}
}
public static int Player2Rolls (int p2rolls)
{
return (p2rolls); // and this one
}
}
如果有人可以帮助我，那将是很好的，因为该项目将在几天后到期。对不起，我的节目太长了，我有点像这样的菜鸟：P提前谢谢！ ：）
答案 0 :(得分：0)
一种方法是在类范围内声明变量（即：不在任何类方法中），并使它们成为静态 - 因为main方法是静态的，它只能访问类的静态成员，然后在静态方法中访问它们如下面的代码片段所示：
validates_presence_of