我真的迷失在这里。我有两个涉及这个问题的课程。第一个类是Application
类,第二个类是GameManager
类。 GameManager
类上有一个名为instantiate()
的方法,我想从Application
类调用它。
所以我在GameManager
类中创建了Application
类的实例。我从非常实际调用instantiate()
方法,但没有任何反应。
它应该输出"Instantiating GameObject"
到控制台,但它不会发生。从来没有。更令人困惑的是renderGame()
类中的GameManager
方法 DOES 被调用(出于测试目的,我输出了gameobjects
GameManager
的数量{ {1}}持有)。
以下是两个类:
申请类:
import javax.swing.*;
import java.awt.*;
import java.awt.image.BufferStrategy;
public class Application implements Runnable {
public static boolean isRunning;
GameManager manager = new GameManager();//CREATE AN INSTANCE OF THE GAME MANAGER
JFrame frame;
BufferStrategy buffer;
Graphics drawer;
Thread appThread;
public Application (JFrame frame, BufferStrategy buffer, Graphics drawer) {
this.frame = frame;
this.frame.setBackground(Color.WHITE);
this.buffer = buffer;
this.drawer = drawer;
}
public synchronized void startLoop () {
appThread = new Thread (this);
appThread.start();
isRunning = true;
GameLoop ();
}
public synchronized void endLoop () {
isRunning = false;
try {
appThread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
void GameLoop() {
int targetFps = 60;
double timePerTick = 1000000000 / targetFps;
double delta = 0;
long now;
long lastTime = System.nanoTime();
while(isRunning) {//THIS IS A LOOP THAT REPEATEDLY CALLS UPDATE AND RENDER METHODS
now = System.nanoTime();
delta += (now - lastTime) / timePerTick;
lastTime = now;
if(delta >= 1) {
masterUpdate();
masterRender();
delta--;
}
}
System.out.println("STOPPED");
}
void masterUpdate () {
manager.updateGame();
}
void masterRender () {
manager.renderGame(drawer);//THIS IS WHERE THE RENDER METHOD IS CALLED
buffer.show();
drawer.dispose();
}
@Override
public void run() {
startLoop();
manager.instantiate();
}
}
GameManager类:
import java.awt.Graphics;
public class GameManager {
public static int currentGameObjectAmount = 0;
public static int maxGameObjects = 100;
Player[] sceneObjects = new Player[maxGameObjects];
public void instantiate () {
System.out.println("Instantiating GameObject");
sceneObjects[currentGameObjectAmount] = new Player(100, 100, 100);
currentGameObjectAmount++;
}
public void updateGame () {
}
public void renderGame (Graphics drawer) {
System.out.println(currentGameObjectAmount);
for(int i = 0; i != maxGameObjects; i++) {
sceneObjects[i].render(drawer);
}
}
}
控制台在输出0
时会输出1
,因为我调用了instantiate()
方法,该方法会增加控制台推出的整数变量。 What happens when I run it
PS:对不起,如果我的代码让你头疼,我真的不是一个高级程序员。
答案 0 :(得分:1)
基本问题在这里......
@Override
public void run() {
startLoop();
manager.instantiate();
}
当您致电startLoop
时,会阻止当前Thread
,直到isRunning
为false
我建议将manager.instantiate()
移到startLoop()
之上。我也可以考虑使用某种start
和end
方法代替可以告诉经理Thread
已启动或停止,但这只是我;)