Question

I want to place obstacles on a game board using a random number generator. 5% of the board will have a pit which is defined as “*”, but the asterisk will not show unless the players lands in that spot; 10% of the board will be blocked spots indicated as “X”; the remaining 85% will be open spaces shown as “.” The game board is a 10×10 array with the letter “P” at the upper left hand corner as the starting point for the player, and a “T” at the bottom right hand corner for the ending (treasure). So far I’ve got this, and I been watching video tutorials as well as reading to try and put this all together, but still stuck:

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

public class Adventure {

    public static void main(String[] args) {
        char grid[][]= new char[10][10];
        Scanner move = new Scanner(System.in);
        System.out.println("Here is the current game board:");
        System.out.println("-------------------------------");

        for(int i=0; i<grid.length; i++) {          
            for(int j=0; j<grid.length; j++) {
                grid[i][j]='.';
                grid[0][0]='P';
                grid[9][9]='T';
                System.out.print(grid[i][j]);
            }
        Random obstacle = new Random();
        int obstacleNum;
        for(int k=1; k<=100; k++) {
            obstacleNum = 1+obstacle.nextInt(100);

        }
            System.out.println("");
        }
        System.out.printf("Enter your move (U/D/L/R)>");
    }
}

Not sure where to go after “obstacleNum = 1+obstacle.nextInt(100);”

Answer 1

As for the actual interactivity, here is an outline:

x = 0; //coordinates of player, location of P
y = 0;

To hide the pits, before printing, stick in and if statement:

if(grid[i][j]=='*') {
    System.out.println("."); //looks like ordinary land
} else {
    System.out.println(grid[i][j]);
}

Now have this run when it receives input (pseudo)

//following if for moving left
if(grid[y][x+1] isn't out of bounds and right key is pressed and grid[y][x+1]!='X') {
    grid[y][x] = '.'; //removes current position
    x++; //change location
}
//following if for moving right
if(grid[y][x-1] isn't out of bounds and left key is pressed and grid[y][x-1]!='X') {
    grid[y][x] = '.'; //removes current position
    x--; //change location
}
//following if for moving down
if(grid[y+1][x] isn't out of bounds and down key is pressed and grid[y+1][x]!='X') {
    grid[y][x] = '.'; //removes current position
    y++; //change location
}
//following if for moving up
if(grid[y-1][x] isn't out of bounds and up key is pressed and grid[y-1][x]!='X') {
    grid[y][x] = '.'; //removes current position
    y--; //change location
}
if(grid[y][x] == '*') { //when trapped in a pit
    System.out.println("You fell in a pit. Game over.");
} else {
    grid[y][x] = 'P'; //update grid
}