Question

所以我必须制作一张有3种不同地形的战舰地图。它必须有海，陆和山。我有大海和陆地已经在工作。我只能把山脉放在陆地上，但我不知道怎么做？感谢您的帮助。继承我的代码：

import java.util.Random;

public class Map {
    protected int numberOfRows; // number of rows in my map
    protected int numberOfColumns; // number of columns in my map
    protected int randomRow;
    protected int randomColumn;

    Terrain terrain [][]; // creates an instance of my terrain

    public Map(int rows, int columns)  { // creates a constructer
        numberOfRows = rows; 
        numberOfColumns = columns;
        terrain = new Terrain[rows][columns]; // puts my number of rows and columns in array
        for(int i = 0; i < rows; i++)  {
            for(int k = 0; k < columns; k++)  {
                terrain[i][k] = new SeaTerrain(); // feels my map with all sea
            }
        }
        addLand(); // runs my add land method
    }

    public void print()  {
        // nested for loop to print my map
        for(int i =0; i < numberOfRows; i++)  {
            for(int j = 0; j < numberOfColumns; j++)  {
                System.out.print(terrain[i][j].getDisplayChar());
            }
            System.out.println("");
        }
    }

    public void addLand()  {
        Random r = new Random();
        int numberOfTimesToRun = r.nextInt(3)+2; // how many islands will be produced
        int temp = 0;
        while(temp <= numberOfTimesToRun)  {
            temp++;

            try { // try catch just incase if the land exceeds my array limit
                randomRow = r.nextInt(40); // picks a random coordinate for my island
                randomColumn = r.nextInt(40); // picks a random coordiante for my island

                int maxRowSize = 20; // max sizes for my islands
                int maxColumnSize = 20;

                int randomColumnSize = r.nextInt(maxColumnSize)+5;
                int randomRowSize = r.nextInt(maxRowSize)+5;

                terrain[randomRow][randomColumn] = new LandTerrain();

                // feels my islands up with the dislay character of "+"
                for(int i = 0; i < randomRowSize; i++)  {
                    terrain[randomRow + i][randomColumn] = new LandTerrain();
                    for(int k = 0; k < randomColumnSize; k++)  {
                        terrain[randomRow+i][randomColumn + k] = new LandTerrain();
                    }
                }

            } catch (Exception e) {

            }
        }
    }
}

//继承我的输出

    ........................................
    ........................................
    ........................++++++++........
    ........................++++++++........
    ........................++++++++........
    ........................++++++++........
    ........................++++++++........
    ..+++++++++++++++.......++++++++........
    ..+++++++++++++++.......++++++++........
    ..+++++++++++++++.......++++++++........
    ..+++++++++++++++.......++++++++........
    ..+++++++++++++++.......++++++++........
    ..+++++++++++++++.......++++++++........
    ..+++++++++++++++.......++++++++........
    ..+++++++++++++++.......................
    ..+++++++++++++++.......................
    ..+++++++++++++++.......................
    ..+++++++++++++++....++++++++...........
    ..+++++++++++++++....++++++++...........
    ..+++++++++++++++....++++++++...........
    ..+++++++++++++++.......................
    ..+++++++++++++++.......................
    ..+++++++++++++++.......................
    ..+++++++++++++++.......................
    ..+++++++++++++++.......................
    ........................................
    ........................................
    ........................................

Answer 1

首先，你要为每张地图分配水，

第二，你在水面上创造了随机大小的岛屿。

现在你想要做几乎相同的事情，在陆地上添加山脉（不像以前那样在水面上）......对吗？

我有两个想法，第一个应该更快

方法1 每次你创建一个岛屿时，当你添加landTerrains时，你会抛出一个骰子（random.nextInt（）），如果它在某个值范围内，你可以改为使用MountainTerrain。

// feels my islands up with the dislay character of "+"
for(int i = 0; i < randomRowSize; i++)  {
    terrain[randomRow + i][randomColumn] = new LandTerrain();
    for(int k = 0; k < randomColumnSize; k++)  {
        if(r.nextInt(10)>8){ //10% probability
            terrain[randomRow+i][randomColumn + k] = new MountainTerrain();

        }
    }
}

方法2 你应该做的事情与添加土地时一样，但这次每次你要添加一座山时，只要问一下那块特定的地图（或矩阵元素）是否已落地。

boolean addedMountain=false;
int i = r.nextInt(numberOfRows);
int j = r.nextInt(numberOfColumns);
while(addedMountain==false){
    if(terrain[i][k].getType()=="Land"){ //just to give you an idea
        terrain[i][k] = new MountainTerrain();
        addedMountain=true;
    }
    else{
        //try again?
        i = r.nextInt(limit);
        j = r.nextInt(limit);
    }
}

你需要为你想要添加的每座山都这样做。

我认为一座山可能只是一个矩阵元素，对吧？但如果您的山脉需要是块（多个矩阵元素），您可以从随机选择的像素中生长它们，直到您遇到水。

将元素添加到二维数组的某个部分

1 个答案: