Hi. Hopefully this is my final question for this code. As you may know, I got a code from lloydgoodall.com for a Java & LWJGL FPCamera. It came with several errors, which I got to fixing, and after many, many Google searches, Option+Space's, and hitting my head against my desk's, I've got to hopefully the last error: The Eclipse console shows: "Exception in thread "main" java.lang.IllegalStateException: Cannot determine close requested state of uncreated window"
I'm confused. Here's my code:

import org.lwjgl.Sys;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.GL11;
import org.lwjgl.input.*;
import org.lwjgl.util.vector.Vector3f;

//First Person Camera Controller
public class FPCameraController
{
    //3d vector to store the camera's position in
    private Vector3f    position    = null;
    //the rotation around the Y axis of the camera
    private float       yaw         = 0.0f;
    //the rotation around the X axis of the camera
    private float       pitch       = 0.0f;
    //Constructor that takes the starting x, y, z location of the camera
    public FPCameraController(float x, float y, float z)
    {
        //instantiate position Vector3f to the x y z params.
        position = new Vector3f(x, y, z);
    }
    //increment the camera's current yaw rotation
    public void yaw(float amount)
    {
        //increment the yaw by the amount param
        yaw += amount;
    }

    //increment the camera's current yaw rotation
    public void pitch(float amount)
    {
        //increment the pitch by the amount param
        pitch += amount;
    }
    //moves the camera forward relitive to its current rotation (yaw)
    public void walkForward(float distance)
    {
        position.x -= distance * (float)Math.sin(Math.toRadians(yaw));
        position.z += distance * (float)Math.cos(Math.toRadians(yaw));
    }

    //moves the camera backward relitive to its current rotation (yaw)
    public void walkBackwards(float distance)
    {
        position.x += distance * (float)Math.sin(Math.toRadians(yaw));
        position.z -= distance * (float)Math.cos(Math.toRadians(yaw));
    }

    //strafes the camera left relitive to its current rotation (yaw)
    public void strafeLeft(float distance)
    {
        position.x -= distance * (float)Math.sin(Math.toRadians(yaw-90));
        position.z += distance * (float)Math.cos(Math.toRadians(yaw-90));
    }

    //strafes the camera right relitive to its current rotation (yaw)
    public void strafeRight(float distance)
    {
        position.x -= distance * (float)Math.sin(Math.toRadians(yaw+90));
        position.z += distance * (float)Math.cos(Math.toRadians(yaw+90));
    }

    //translates and rotate the matrix so that it looks through the camera
    //this dose basic what gluLookAt() does
    public void lookThrough()
    {
        //roatate the pitch around the X axis
        GL11.glRotatef(pitch, 1.0f, 0.0f, 0.0f);
        //roatate the yaw around the Y axis
        GL11.glRotatef(yaw, 0.0f, 1.0f, 0.0f);
        //translate to the position vector's location
        GL11.glTranslatef(position.x, position.y, position.z);
    }

public static void main(String[] args)
{
    FPCameraController camera = new FPCameraController(0, 0, 0);

    float dx        = 0.0f;
    float dy        = 0.0f;
    float dt        = 0.0f; //length of frame
    float lastTime  = 0.0f; // when the last frame was
    float time      = 0.0f;

    float mouseSensitivity = 0.05f;
    float movementSpeed = 10.0f; //move 10 units per second

    //hide the mouse
    Mouse.setGrabbed(true);
  
    // keep looping till the display window is closed the ESC key is down
    while (!Display.isCloseRequested() &&
            !Keyboard.isKeyDown(Keyboard.KEY_ESCAPE))
    {
   

        time = Sys.getTime();
        dt = (time - lastTime)/1000.0f;
        lastTime = time;


        //distance in mouse movement from the last getDX() call.
        dx = Mouse.getDX();
        //distance in mouse movement from the last getDY() call.
        dy = Mouse.getDY();

        //controll camera yaw from x movement fromt the mouse
        camera.yaw(dx * mouseSensitivity);
        //controll camera pitch from y movement fromt the mouse
        camera.pitch(dy * mouseSensitivity);


        //when passing in the distrance to move
        //we times the movementSpeed with dt this is a time scale
        //so if its a slow frame u move more then a fast frame
        //so on a slow computer you move just as fast as on a fast computer
        if (Keyboard.isKeyDown(Keyboard.KEY_W))//move forward
        {
            camera.walkForward(movementSpeed*dt);
        }
        if (Keyboard.isKeyDown(Keyboard.KEY_S))//move backwards
        {
            camera.walkBackwards(movementSpeed*dt);
        }
        if (Keyboard.isKeyDown(Keyboard.KEY_A))//strafe left
        {
            camera.strafeLeft(movementSpeed*dt);
        }
        if (Keyboard.isKeyDown(Keyboard.KEY_D))//strafe right
        {
            camera.strafeRight(movementSpeed*dt);
        }

        //set the modelview matrix back to the identity
        GL11.glLoadIdentity();
        //look through the camera before you draw anything
        camera.lookThrough();
        //you would draw your scene here.

        //draw the buffer to the screen
        Display.update();
    }

	}
}

You didn't give us the line number for your exception, but, if it's line 92 you will need to look at the code/doc for org.lwjgl.opengl.Display to find out what it's complaining about and why.

But - where do you create/open/display the Display window???

Edited 6 Years Ago by JamesCherrill: Wrong line number, added question

You see, that's the problem -- I have no idea how to create/open/display the display window, or what to put into it.

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