It pitches differently when I face a different direction (down instead of up).
Also I couldn't find any decent first-person camera tutorials on the web.
I just need a simple camera...
It's really frustrating for the beginner.
Any help will be appreciated!!!
using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
namespace MyGame {
public class Camera : Microsoft.Xna.Framework.GameComponent {
public Matrix view { get; protected set; }
public Matrix projection { get; protected set; }
public Vector3 pos;
public Vector3 dir;
Vector3 up;
float speed = 1.5f;
float gravity = 0;
float jump = 0;
public Model model;
private float pitch;
MouseState prevMouseState;
// -------------------------------------
public Camera(Game game, Vector3 iPos, Vector3 target, Vector3 iUp)
: base(game) {
pos = iPos;
dir = target - iPos;
dir.Normalize();
up = iUp;
createLookAt();
pitch = 0;
float aspectRatio = (float)Game.Window.ClientBounds.Width /
(float)Game.Window.ClientBounds.Height;
// 45 degrees
float fieldOfView = MathHelper.PiOver4;
projection = Matrix.CreatePerspectiveFieldOfView(fieldOfView, aspectRatio, 0.1f, 3000);
model = Game.Content.Load<Model>("Models/bublik");
}
// -------------------------------------
public override void Initialize() {
Mouse.SetPosition(Game.Window.ClientBounds.Width / 2, Game.Window.ClientBounds.Height / 2);
prevMouseState = Mouse.GetState();
base.Initialize();
}
// -------------------------------------
public override void Update(GameTime gameTime) {
KeyboardState ks = Keyboard.GetState();
MouseState ms = Mouse.GetState();
// moving
if (ks.IsKeyDown(Keys.W) && ((Game1)Game).canMove) {
// making sure the player only walks forward (restricting Y direction)
float y = dir.Y;
dir.Y = 0;
pos += dir * speed;
dir.Y = y;
}
if (ks.IsKeyDown(Keys.S)) {
float y = dir.Y;
dir.Y = 0;
pos -= dir * speed;
dir.Y = y;
}
if (ks.IsKeyDown(Keys.A))
pos += Vector3.Cross(up, dir) * speed;
if (ks.IsKeyDown(Keys.D))
pos -= Vector3.Cross(up, dir) * speed;
// jump
if (ks.IsKeyDown(Keys.Space) && pos.Y <= 10.1f)
jump = 1.2f;
// yaw and pitch
dir = Vector3.Transform(dir, Matrix.CreateFromYawPitchRoll (
(-MathHelper.PiOver4 / 400) * (Mouse.GetState().X - prevMouseState.X),
(MathHelper.PiOver4 / 400) * (Mouse.GetState().Y - prevMouseState.Y),
0) ) ;
dir.Normalize();
Mouse.SetPosition(Game.Window.ClientBounds.Width / 2, Game.Window.ClientBounds.Height / 2);
prevMouseState = Mouse.GetState();
createLookAt();
// basic physics
pos.Y -= gravity;
if (pos.Y > 10)
gravity += 0.02f;
else if (pos.Y == 10)
gravity = 0;
else if (pos.Y < 10) {
pos.Y = 10;
gravity = 0;
jump = 0;
}
if (jump > 0) {
pos.Y += jump;
jump -= 0.03f;
}
((Game1)Game).player.position = pos + dir * 10;
base.Update(gameTime);
}
// -------------------------------------
private void createLookAt() {
view = Matrix.CreateLookAt(pos, pos + dir, up);
}
}
}
