Ok so here is the problem, I found a nice working 2D Camera from:
http://www.david-amador.com/2009/10/xna-camera-2d-with-zoom-and-rotation/
So now, I have implemented it into my 2D Top-Down Shooter game and it works nicely. When I have the camera position equal that of the player position, it works perfectly; to an extent. Now when I have the camera position = the player position, it jerks around a little bit like this:
http://www.youtube.com/watch?v=mh4Tx9xg324
As you can see the sprite goes and then goes back a little bit. I will give a rough example: If the player position is (100, 100) I move to the right and it goes to (120, 100). Now all the numbers are fine, its the visualization. The visualization seems like this:
(100, 100) -> (130, 100) -> (120, 100)
I have no idea why it is doing this and it bugs me to the point that it is all that I am working on to fix. Now when I have the camera centered on a point (1000, 1000), the player doesn't jerk around as such. So this makes everything point directly at the Camera2D Class.
Anyway, if anyone could help it would be greatly appreciated!
- Bobby
** EDIT ** Movement Code:
//Update Movement for user controlled sprites
//A bit rough around the edges at the moment...
public void UpdateMovement(Input input) {
//Get ready to point sprite at mouse location in relation to the center of the screen
MouseState mouse = Mouse.GetState();
mouseLoc = new Vector2(mouse.X, mouse.Y);
direction = new Vector2(512, 300) - mouseLoc;
angle = (float)((Math.Atan2(-direction.Y, -direction.X)));
m_Rotation = angle;
//End angle information
//reset the changed vector 2 back to zero
changed = Vector2.Zero;
//checkCollision(vector2)
//it gets the estimated new point and if it doesnt hit a wall
//it sets to the new point.
if (input.CurrentKeyboardState.IsKeyDown(Keys.A)) {
changed.X = -m_Speed;
if (!checkCollision(changed)) {
m_Position += changed;
}
}
if (input.CurrentKeyboardState.IsKeyDown(Keys.D)) {
changed.X = m_Speed;
if (!checkCollision(changed)) {
m_Position += changed;
}
}
if (input.CurrentKeyboardState.IsKeyDown(Keys.W)) {
changed.Y = -m_Speed;
if (!checkCollision(changed)) {
m_Position += changed;
}
}
if (input.CurrentKeyboardState.IsKeyDown(Keys.S)) {
changed.Y = m_Speed;
if (!checkCollision(changed)) {
m_Position += changed;
}
}
}
