我正在为我正在学习的高中课程制作/创建一个基于Java的游戏,它的逻辑正在逃避我。
我想要做的目标是制作一个游戏,在JPanel上随机生成一个24x24网格中的“地形”正方形(因为我发现它是最常见的绘制对象)所有这一切都在它自己身上没有外部(用户)的帮助。
我正在通过“for”循环尝试这个,它将采用“coords [] []”并用值Ex:floor标记某个“虚构”位置。
但是,当我运行它时,它所做的就是将第一个20x20的正方形绘制在0,0。
现在我听说/读过Java中没有“多维”数组,例如Small Basic。但我不明白数组内部的数组具体是什么。关于这方面的一些解释将不胜感激。
此外,任何可以使我的程序更容易/更顺畅的替代建议都会受到赞赏,因为我现在是一名新手程序员。
我在这些帖子中找到了解决问题的方法,但无济于事。
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以下是应该为我执行此操作但当前失败的代码块:
class gamePanel extends JPanel
{
public gamePanel()
{
setBounds(115,93,480,480);
setBackground(Color.white);
}
private Random generator = new Random();
int floor = 0; //initializes the variable floor to zero for later use
int dirt = 1;
int stone = 2;
int water = 3;
int lava = 4;
int iron = 5;
int gold = 6;
int emerald = 7;
int diamond = 8;
int bedrock = 9;
int width = 24;
int height = 24;
int x, y; // my x & y variables for coordinates
int[][] coords = new int[width][height]; //my array that I want to store the coordinates for later use in painting
int[] terrain = {floor, dirt, stone, water, lava, iron,
gold, emerald, diamond, bedrock}; //my terrain that will determine the color of the paint
public void mapGen() //what should mark/generate the JPanel
{
for(x = 0; x <= width; x++)
{
for(y = 0; y <= height; y++)
{
int z = generator.nextInt(20);// part of the randomization
if(z <= 11)
{
coords[x][y] = terrain[0]; //marks the coordinates as floor
}
else{};
}
}
coords[0][0] = terrain[0]; // sets coordinate 0,0 to floor //need to have these always be floor
coords[24][24] = terrain[0]; // sets coordinate 24,24 to floor //^^^^^^^^^^
}
@Override
public void paintComponent(Graphics g)//what will paint each 20x20 square on the grid what it is assigned
{
super.paintComponent(g);
if(coords[x][y] == terrain[floor])
{
g.setColor(new Color(46,46,46));
g.fillRect((x*20),(y*20),20,20);
}
else{};
}
}//end gamePanel
如果在响应中对其进行了解释,那么在Java编程中不被视为“基本”的任何和所有术语/代码都将非常受欢迎。
请尽可能详细地说明您的回复,因为我还在学习Java及其工作原理。
编辑
所以这段代码有点起作用,但它没有完成它应该做的事情。
这个程序(至少部分)应该工作的方式是循环每个单独的20x20方格被标记为由“coords [x] [y]”表示的特定坐标的特定地形
然后在标记了坐标后,它应该返回并分别为“paintComponent”中指定的“terrain”绘制每个
在这样做的过程中,程序应该为玩家创建一个地图,让他们一路走来。
相反它的作用是覆盖整个JPanel只有“terrain [dirt]”而没有其他
以下是该计划的工作模型及其问题:
import java.awt.*;
import javax.swing.*;
import java.util.*;
public class gamePanel extends JPanel
{
public gamePanel()
{
setBounds(115,93,480,480);
setBackground(Color.white);
}
private Random generator = new Random();
int floor = 0; //initializes the variable floor to zero for later use
int dirt = 1;
int stone = 2;
int water = 3;
int width = 24;
int height = 24;
int x, y; // my x & y variables for coordinates
int[][] coords = new int[width][height]; //my array that I want to store the coordinates for later use in painting
int[] terrain = {floor, dirt, stone, water}; //my terrain that will determine the color of the paint
public void mapGen() //what should mark/generate the JPanel
{
for(x = 0; x <= width; x++)
{
for(y = 0; y <= height; y++)
{
int z = generator.nextInt(20);// part of the randomization
if(z <= 11)
{
coords[x][y] = terrain[0]; //should mark the coordinates as floor
}
if(z == 12)
{
coords[x][y] = terrain[3];//should mark the coordinates as water
}
if(z >= 13 && z <= 17)
{
coords[x][y] = terrain[2];//should mark the coordinates as stone
}
if(z >= 18 && z <= 20)
{
coords[x][y] = terrain[1];//should mark the coordinates as dirt
}
coords[0][0] = terrain[0]; // sets coordinate 0,0 to floor //need to have these always be floor
coords[24][24] = terrain[0]; // sets coordinate 24,24 to floor //^^^^^^^^^^
}
}
}
@Override
public void paintComponent(Graphics g)//what will paint each 20x20 square on the grid what it is assigned
{
super.paintComponent(g);
for(int x = 0; x < width; x++)
{
for(int y = 0; y < height; y++)
{
if(coords[x][y] == terrain[floor])//should paint the floor color at marked coordinates
{
g.setColor(new Color(46,46,46));
g.fillRect((x*20), (y*20), 20, 20);
}
if(coords[x][y] == terrain[dirt]);//should paint the dirt color at marked coordinates
{
g.setColor(new Color(135,102,31));
g.fillRect((x*20), (y*20), 20, 20);
}
if(coords[x][y] == terrain[stone])//should paint the stone color at marked coordinates
{
g.setColor(new Color(196,196,196));
g.fillRect((x*20),(y*20),20,20);
}
if(coords[x][y] == terrain[water])//should paint the water color at marked coordinates
{
g.setColor(new Color(85,199,237));
g.fillRect((x*20),(y*20),20,20);
}
}
}
}//end paintComponent
public static void main(String[] args)
{
gamePanel panel = new gamePanel();
JFrame frame = new JFrame();
frame.setSize(480,480);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(panel);
frame.setVisible(true);
}//end main
}// end gamePanel
答案 0 :(得分:2)
两个要点:
paintComponent
时,都需要重新绘制整个组件状态x
和y
不会改变paintComponent
,它们与mapGen
之后的价值相同相反,你的绘画方法看起来更像......
@Override
protected void paintComponent(Graphics g)//what will paint each 20x20 square on the grid what it is assigned
{
super.paintComponent(g);
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
if (coords[x][y] == terrain[floor]) {
g.setColor(new Color(46, 46, 46));
g.fillRect((x * 20), (y * 20), 20, 20);
} else ... {
//...
}
}
}
}
有关详细信息,请参阅Painting in AWT and Swing和Performing Custom Painting
就个人而言,在mapGen
中,我会创建一个宽BufferedImage
宽且24*20
高的24*20
,将所有切片绘制到其中{{1}方法,绘制图像
paintComponent
,因此mapGen
中的值始终为coord
或“floor 0
和for (x = 0; x <= width; x++) {
将导致for (y = 0; y <= height; y++) {
,因为数组基于零(IndexOutOfBoundsException
)0-23
会导致coords[24][24] = terrain[0];
。更正后,代码可以生成类似......
的内容