我正在尝试从LWJGL向我的显示器添加一个关键监听器。我可以看到我的代码中出现错误的地方，我认为问题是因为我正在尝试将我的密钥监听器“input”添加到类中。在我看到的所有示例中，关键侦听器都被添加到JFrame中，但我没有使用它，所以我不知道要将它添加到什么内容。我正在提供我遇到错误的类和我创建的关键监听器。请忽略一些评论，因为大多数评论只是失败的代码片段。我得到的错误是在Initializer的第39行。该行是“this.addKeyListener（input）;”。我想添加的另一件事是，目前“/”的长行之间的代码是无用的，所以忽略它们会更好。谢谢你的帮助。
import java.awt.Cursor;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.util.Random;
import org.lwjgl.LWJGLException;
import org.lwjgl.input.Keyboard;
import org.lwjgl.input.Mouse;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import static org.lwjgl.opengl.GL11.*;
public class Initializer {
static int height = 800;
static int width = 600;
public static Camera cam;
private InputHandler input;
public void start() {
try {
Display.setDisplayMode(new DisplayMode(height,width));
Display.setTitle("3D OpenGL");
Display.create();
} catch (LWJGLException e) {
e.printStackTrace();
System.exit(0);
}
// init OpenGL here
cam = new Camera(70, (float)Display.getWidth()/(float)Display.getHeight(), 0.3f, 1000);
float x = 0;
//Makes cursor disappear
Mouse.setGrabbed(true);
//displayExample.getContentPane().setCursor(c);
input = new InputHandler();
this.addKeyListener(input);
Keyboard.enableRepeatEvents(false);
while (!Display.isCloseRequested() && !Keyboard.isKeyDown(Keyboard.KEY_ESCAPE)) {
///////////////////////////////////////////////
Movement2Vector movement = new Movement2Vector(0, 0);
//Current issue is that the 2 statements below are not working to check for which key is pressed and if a key is pressed
int key = Keyboard.getEventKey();
boolean pressed = Keyboard.getEventKeyState();
System.out.println(pressed);
Movement2Vector vec = Direction.of(key);
//System.out.println(vec.getX() + ", " + vec.getY());
if (pressed) {
movement = movement.add2Vector(vec);
cam.moveCam(movement);
} else if (movement != new Movement2Vector(0, 0) && movement == vec) {
movement = new Movement2Vector(0, 0);
}
///////////////////////////////////////////////
//Checks for movement
//Movement mov = new Movement();
//Initialized Delta
Delta.lastFrame = Delta.getTime();
// render OpenGL here
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
cam.useView();
glPushMatrix();
glColor3f(1.0f, 0.5f, 0f);
glTranslatef(0,0,-10);
glRotatef(x, 2.5f, 1.5f , 0);
glColor3f(0.0f, 1.0f, 1.0f);
CreateCube cube = new CreateCube(-1, 1, 1, 1, -1, -1);
/*glBegin(GL_QUADS);
//FrontFace
glVertex3f(-1,-1,1);
glVertex3f(-1,1,1);
glVertex3f(1,1,1);
glVertex3f(1,-1,1);
//BackFace
glVertex3f(-1,-1,-1);
glVertex3f(-1,1,-1);
glVertex3f(1,1,-1);
glVertex3f(1,-1,-1);
//BottomFace
glVertex3f(-1,-1,-1);
glVertex3f(-1,-1,1);
glVertex3f(-1,1,1);
glVertex3f(-1,1,-1);
//TopFace
glVertex3f(1,-1,-1);
glVertex3f(1,-1,1);
glVertex3f(1,1,1);
glVertex3f(1,1,-1);
//LeftFace
glVertex3f(-1,-1,-1);
glVertex3f(1,-1,-1);
glVertex3f(1,-1,1);
glVertex3f(-1,-1,1);
//Right Face
glVertex3f(-1,1,-1);
glVertex3f(1,1,-1);
glVertex3f(1,1,1);
glVertex3f(-1,1,1);
glEnd();*/
glPopMatrix();
for(int i=-15; i<4; i++){
for(int y=-1; y<2; y++){
Random r = new Random();
glColor3f(0.3f, 1.0f, 0.5f);
CreateCube cubeTest = new CreateCube(y-1, -4, i-1, y+1, -2, i+1);
}
}
x += 1f;
Display.update();
Display.sync(60);
}
Display.destroy();
System.exit(1);
}
public static void main(String[] args) {
Initializer displayExample = new Initializer();
displayExample.start();
}
}
Key Listener类
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import org.lwjgl.input.Keyboard;
public class InputHandler implements KeyListener, FocusListener{
public boolean[] key = new boolean[68836];
@Override
public void focusGained(FocusEvent e) {
// TODO Auto-generated method stub
}
@Override
public void focusLost(FocusEvent e) {
// TODO Auto-generated method stub
}
@Override
public void keyPressed(KeyEvent e) {
if(Keyboard.isKeyDown(Keyboard.KEY_W)){
Initializer.cam.moveForward(0.005f*Delta.getDelta());
}
else if(Keyboard.isKeyDown(Keyboard.KEY_S)){
Initializer.cam.moveForward(-0.005f*Delta.getDelta());
}
else if(Keyboard.isKeyDown(Keyboard.KEY_A)){
Initializer.cam.moveSideways(0.005f*Delta.getDelta());
}
else if(Keyboard.isKeyDown(Keyboard.KEY_D)){
Initializer.cam.moveSideways(-0.005f*Delta.getDelta());
}
else if(Keyboard.isKeyDown(Keyboard.KEY_SPACE)){
Initializer.cam.moveUp(0.005f*Delta.getDelta());
}
else if(Keyboard.isKeyDown(Keyboard.KEY_LSHIFT)){
Initializer.cam.moveUp(-0.005f*Delta.getDelta());
}
/*int keyCode = e.getKeyCode();
if(keyCode > 0 && keyCode < key.length){
key[keyCode] = true;
}*/
}
@Override
public void keyReleased(KeyEvent e) {
/*for(int i = 0; i < key.length; i++){
key[i] = false;
}*/
}
@Override
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub
}
}
答案 0 :(得分：0)
如果您使用的是lwjgl，则可以导入import org.lwjgl.input.Keyboard;
而你可以使用它，而我发现效率更高
if(Keyboard.isKeyDown(Keyboard.KEY_LEFT)){