循環繪製矩形

我想製作一個基本的俄羅斯方塊遊戲，首先我要繪製一個網格以確保我創建了塊，但是我無法讓我的程序訪問我的paintComponent方法。循環繪製矩形

package tetris; 

import javax.swing.*; 
import java.awt.*; 

public class TetrisMain extends JFrame { 

final int BoardWidth = 10; 
final int BoardHeight = 20; 
public static int HEIGHT = 400; 
public static int WIDTH = 200; 

Timer timer; 
boolean isFallingFinished = false; 
boolean isStarted = false; 
boolean isPaused = false; 
int score = 0; 
int curX = 0; 
int curY = 0; 
int[][] grid = new int[BoardWidth][BoardHeight]; 

public static void main(String[] args) { 
    JFrame frame = new JFrame("Charles Walker - 1504185"); 
    frame.setSize(WIDTH, HEIGHT); 
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    frame.setLocationRelativeTo(null); 
    frame.setResizable(false); 
    frame.setVisible(true); 
    frame.repaint(); 
} 

public void paintComponent(Graphics g) { 
    super.paintComponents(g); 
    g.setColor(Color.BLACK); 
    for (int i = 0; i < BoardWidth; i++) { 
     for (int j = 0; j < BoardHeight; j++) { 
      curX = grid[i][curY]; 
      curY = grid[curX][j]; 
      g.fillRect(WIDTH/BoardWidth, HEIGHT/BoardHeight, curX, curY); 
     } 
    } 
} 
}

來源

2016-12-04 Chaz

使用jpanel繪製graphics.and你爲什麼要創建另一個框架？'TetrisMain'是一個jframe –

對不起，我只是在我發佈之前就把它拿出來了，但仍舊複製了舊代碼，忽略了這一點。至於使用JPanel進行繪製，這是如何工作的不同？以及如何訪問我的paintComponent來做到這一點？ – Chaz

jframe是一個沉重的組件，實際上它不是一個jcomponent，所以沒有paint組件的方法。它最好使用jpanel進行繪製。如果你從jpanel擴展clas，那麼你可以覆蓋paintComponent method.add'@ override'註釋你會看到問題 –

這是一個基本的代碼做你想要什麼：

import javax.swing.JFrame; 
import java.awt.Graphics; 
import javax.swing.JPanel; 
import javax.swing.*; 

public class Name extends JFrame { 
    public Name() { 
     super("Name"); 
     setTitle("Application"); 
     setContentPane(new Pane()); 
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     setSize(400,400); 
     setResizable(true); 
     setVisible(true); 
     while (true){ 
       try { //Update screen every 33 miliseconds = 25 FPS 
       Thread.sleep(33); 
       } catch(InterruptedException bug) { 
       Thread.currentThread().interrupt(); 
       System.out.println(bug); 
       } 
       repaint(); 
     } 
    } 
    class Pane extends JPanel { 
     public void paintComponent(Graphics g) { //Here is were you can draw your stuff 
      g.drawString("Hello World",0,20); //Display text 
     } 
    } 
    public static void main(String[] args){ 
     new Name(); 
    } 
}

我想你忘記了該行設定的內容窗格：

setContentPane(new Pane());

和，重要的是，你需要a while循環重繪：

while (true){ 
    try { //Update screen every 33 miliseconds = 25 FPS 
    Thread.sleep(33); 
    } catch(InterruptedException bug) { 
    Thread.currentThread().interrupt(); 
    System.out.println(bug); 
    } 
    repaint(); 
}

來源

2016-12-04 17:05:04 user7185318

循環繪製矩形

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