Hello everyone,
I have a problem that my camera starts to stutter when moving it after a random amount of time. This is not the case for the movement itself. That runs really smoothly. It is just hte camera that starts to stutter. Small notice I am working in monogame
Here is the code of the main
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
namespace Cube_chaser
{
public class CubeChaserGame : Game
{
GraphicsDeviceManager graphics;
SpriteBatch spriteBatch;
Camera camera;
Map map;
BasicEffect effect;
private Vector2 mouseRotationBuffer;
private MouseState currentMouseState, previousMouseState;
public Vector3 moveVector = Vector3.Zero;
public CubeChaserGame()
{
graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";
}
protected override void Initialize()
{
camera = new Camera(this, new Vector3(0.5f, 0.5f, 0.5f), Vector3.Zero, 5f);
Components.Add(camera);
effect = new BasicEffect(GraphicsDevice);
map = new Map(GraphicsDevice);
IsMouseVisible = false;
graphics.IsFullScreen = true;
previousMouseState = Mouse.GetState();
base.Initialize();
}
protected override void LoadContent()
{
spriteBatch = new SpriteBatch(GraphicsDevice);
}
protected override void UnloadContent()
{
// TODO: Unload any non ContentManager content here
}
protected override void Update(GameTime gameTime)
{
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
Exit();
float dt = (float)gameTime.ElapsedGameTime.TotalSeconds;
KeyboardState keyState = Keyboard.GetState();
currentMouseState = Mouse.GetState();
moveVector = Vector3.Zero;
//Handle the mouse movement for rotation
float deltaX, deltaY;
if (currentMouseState != previousMouseState)
{
//We need to save the mouse location for further use
deltaX = (currentMouseState.X - (GraphicsDevice.Viewport.Width / 2));
deltaY = (currentMouseState.Y - (GraphicsDevice.Viewport.Height / 2));
mouseRotationBuffer.X -= (0.09f * deltaX * dt);
mouseRotationBuffer.Y -= (0.09f * deltaY * dt);
if (mouseRotationBuffer.Y < MathHelper.ToRadians(-75.0f))
{
mouseRotationBuffer.Y = mouseRotationBuffer.Y - (mouseRotationBuffer.Y - MathHelper.ToRadians(-75.0f));
}
if (mouseRotationBuffer.Y > MathHelper.ToRadians(75.0f))
{
mouseRotationBuffer.Y = mouseRotationBuffer.Y - (mouseRotationBuffer.Y - MathHelper.ToRadians(75.0f));
}
camera.Rotation = new Vector3(-MathHelper.Clamp(mouseRotationBuffer.Y, MathHelper.ToRadians(-75.0f), MathHelper.ToRadians(75.0f)), MathHelper.WrapAngle(mouseRotationBuffer.X), 0);
deltaX = 0;
deltaY = 0;
}
try { Mouse.SetPosition(GraphicsDevice.Viewport.Width / 2, GraphicsDevice.Viewport.Height / 2); }
catch { }
if (keyState.IsKeyDown(Keys.W)) moveVector.Z = 1;
if (keyState.IsKeyDown(Keys.S)) moveVector.Z = -1;
if (keyState.IsKeyDown(Keys.A)) moveVector.X = 1;
if (keyState.IsKeyDown(Keys.D)) moveVector.X = -1;
if (keyState.IsKeyDown(Keys.Space) && camera.Position.Y >= 0.5f && camera.Position.Y <= 0.8f) moveVector.Y = 0.05f;
// if (camera.Position.Y == 0.8f&&camera.Position.Y>=0.5f)camera.moveVector.Y=-0.01f;
if (moveVector != Vector3.Zero)
{
//We don't want to make the player move faster when it is going diagonally.
moveVector.Normalize();
//Now we add the smoothing factor and speed factor
moveVector *= (dt * camera.cameraSpeed);
Vector3 newPosition = camera.PreviewMove(moveVector);
bool moveTrue = true;
if (newPosition.X < 0 || newPosition.X > Map.mazeWidth) moveTrue = false;
if (newPosition.Z < 0 || newPosition.Z > Map.mazeHeight) moveTrue = false;
foreach (BoundingBox boxes in map.GetBoundsForCell((int)newPosition.X, (int)newPosition.Z))
{
if (boxes.Contains(newPosition) == ContainmentType.Contains)
{
moveTrue = false;
}
}
if (moveTrue) camera.Move(moveVector);
previousMouseState = currentMouseState;
camera.Update(gameTime);
base.Update(gameTime);
}
}
protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.Black);
map.Draw(camera, effect);
// TODO: Add your drawing code here
base.Draw(gameTime);
}
}
}
This is the code for the camera:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Graphics;
namespace Cube_chaser
{
public class Camera: GameComponent
{
#region Fields
public Vector3 cameraPosition;
public Vector3 cameraRotation;
public float cameraSpeed;
private Vector3 cameraLookAt;
#endregion
#region Properties
public Matrix Projection
{
get;
protected set;
}
public Matrix View
{
get
{
return Matrix.CreateLookAt(cameraPosition, cameraLookAt, Vector3.Up);
}
}
public Vector3 Position
{
get { return cameraPosition; }
set
{
cameraPosition = value;
UpdateLookAt();
}
}
public Vector3 Rotation
{
get { return cameraRotation; }
set
{
cameraRotation = value;
UpdateLookAt();
}
}
#endregion
#region Constructor
public Camera (Game game, Vector3 position, Vector3 rotation, float speed):base(game)
{
cameraSpeed = speed;
//Setup the projection Matrix
Projection = Matrix.CreatePerspectiveFieldOfView(MathHelper.PiOver4, game.GraphicsDevice.Viewport.AspectRatio, 0.05f, 100.0f);
MoveTo(position, rotation);
}
#endregion
#region Helper Methods
//Set the camera its position and rotation
public void MoveTo(Vector3 pos, Vector3 rot)
{
Position = pos;
Rotation = rot;
}
//Updating the look at vector
public void UpdateLookAt()
{
//Built a rotation matrix to rotate the direction we are looking
Matrix rotationMatrix = Matrix.CreateRotationX(cameraRotation.X) * Matrix.CreateRotationY(cameraRotation.Y);
// Build a look at offset vector
Vector3 lookAtOffset = Vector3.Transform(Vector3.UnitZ, rotationMatrix);
//Update our camera's look at the vector
cameraLookAt = (cameraPosition + lookAtOffset);
}
//Method to create movement and to check if it can move:)
public Vector3 PreviewMove(Vector3 amount)
{
//Create a rotation matrix to move the camera
Matrix rotate = Matrix.CreateRotationY(cameraRotation.Y);
//Create the vector for movement
Vector3 movement = new Vector3(amount.X, amount.Y, amount.Z);
movement = Vector3.Transform(movement, rotate);
// Give the value of the camera position +ze movement
return (cameraPosition+movement);
}
//Method that moves the camera when it hasnt'collided with anything
public void Move(Vector3 scale)
{
//Moveto the location
MoveTo(PreviewMove(scale), Rotation);
}
#endregion
/*public void Update(GameTime gameTime)
{
}*/
}
}
Any idea why the camera stutters after a while?
Thanks,
Jeromer