LWJGL（鼠标支持）的第一人称相机

Question

我正在用LWJGL开发一个3D游戏，我想添加一个支持鼠标的第一人称相机。我现在有一个，但它并不顺利，一点也不好用。我真的希望窗口也能聚焦，这样鼠标就可以启动，而不是在窗口上悬停。我如何实现这一点？

以下是我当前的摄像头实现：

public class Camera {

private Vector3f position = new Vector3f(0,5,0);
private float pitch = 10;
private float yaw;
private float roll;

private float speed = 0.2f;

public Camera() {

}

public void move() {

    yaw =  - (Display.getWidth() - Mouse.getX() / 4);
    pitch =  (Display.getHeight() / 1000) - Mouse.getY();

    if (pitch >= 90) {
        pitch = 90;
    }
    else if (pitch <= -90) {
        pitch = -90;
    }

    if (Keyboard.isKeyDown(Keyboard.KEY_W)) {

        position.z += -(float)Math.cos(Math.toRadians(yaw)) * speed;
        position.x += (float)Math.sin(Math.toRadians(yaw)) * speed;

    }
    else if (Keyboard.isKeyDown(Keyboard.KEY_S)) {

        position.z -= -(float)Math.cos(Math.toRadians(yaw)) * speed;
        position.x -= (float)Math.sin(Math.toRadians(yaw)) * speed;

    }

    if (Keyboard.isKeyDown(Keyboard.KEY_D)) {

        position.z += (float)Math.sin(Math.toRadians(yaw)) * speed;
        position.x += (float)Math.cos(Math.toRadians(yaw)) * speed;

    }
    else if (Keyboard.isKeyDown(Keyboard.KEY_A)) {

        position.z -= (float)Math.sin(Math.toRadians(yaw)) * speed;
        position.x -= (float)Math.cos(Math.toRadians(yaw)) * speed;

    }

    if (Keyboard.isKeyDown(Keyboard.KEY_LSHIFT)) {

        position.y -= speed;

    }

    if (Keyboard.isKeyDown(Keyboard.KEY_SPACE)) {

        position.y += speed;

    }

    if (Keyboard.isKeyDown(Keyboard.KEY_ESCAPE)) {
        System.exit(0);
    }

}

public Vector3f getPosition() {
    return position;
}

public float getPitch() {
    return pitch;
}

public float getYaw() {
    return yaw;
}

public float getRoll() {
    return roll;
}

}

Answer 1

在计算偏航和俯仰时，您正在进行整数除法，这很糟糕，因为结果也将是整数。要更改此设置，您只需使一个值像这样浮动：

yaw =  - (Display.getWidth() - Mouse.getX() / 4f);
pitch =  (Display.getHeight() / 1000f) - Mouse.getY();

现在，结果将更加精确。

虽然我建议使用此代码计算俯仰和偏航：

float rotationSpeed = 1.0; //You probably need to change this factor
yaw -= Mouse.getDX() / rotationSpeed;
pitch += Mouse.getDY() / rotationSpeed;

getDX/Y（）返回自上次调用getDX/Y（）以来x/Y轴上的移动。

如果你想专注于窗口，只需调用鼠标。设置抓取（true）。