public static void UpdateCamera(Camera camera, GameTime gameTime, StateSpaceComponents stateSpaceComponents, int cellSize, KeyboardState prevKey)
{
if (Mouse.GetState().RightButton == ButtonState.Pressed)
{
MessageDisplaySystem.SetRandomGlobalMessage(stateSpaceComponents, Messages.CameraDetatchedMessage);
camera.Target = Vector2.Transform(Mouse.GetState().Position.ToVector2(), camera.GetInverseMatrix());
camera.AttachedToPlayer = false;
}
if (Keyboard.GetState().IsKeyDown(Keys.W))
{
camera.AttachedToPlayer = false;
camera.Position.Y -= camera.Velocity.Y * (float)gameTime.ElapsedGameTime.TotalSeconds;
camera.Target = camera.Position;
MessageDisplaySystem.SetRandomGlobalMessage(stateSpaceComponents, Messages.CameraDetatchedMessage);
}
if (Keyboard.GetState().IsKeyDown(Keys.A))
{
camera.AttachedToPlayer = false;
camera.Position.X -= camera.Velocity.X * (float)gameTime.ElapsedGameTime.TotalSeconds;
camera.Target = camera.Position;
MessageDisplaySystem.SetRandomGlobalMessage(stateSpaceComponents, Messages.CameraDetatchedMessage);
}
if (Keyboard.GetState().IsKeyDown(Keys.S))
{
camera.AttachedToPlayer = false;
camera.Position.Y += camera.Velocity.Y * (float)gameTime.ElapsedGameTime.TotalSeconds;
camera.Target = camera.Position;
MessageDisplaySystem.SetRandomGlobalMessage(stateSpaceComponents, Messages.CameraDetatchedMessage);
}
if (Keyboard.GetState().IsKeyDown(Keys.D))
{
camera.AttachedToPlayer = false;
camera.Position.X += camera.Velocity.X * (float)gameTime.ElapsedGameTime.TotalSeconds;
camera.Target = camera.Position;
MessageDisplaySystem.SetRandomGlobalMessage(stateSpaceComponents, Messages.CameraDetatchedMessage);
}
if(Keyboard.GetState().IsKeyDown(Keys.OemPlus) && prevKey.IsKeyUp(Keys.OemPlus))
{
if(camera.Scale + .25f < 4.25f)
{
camera.Scale += .25f;
}
}
if (Keyboard.GetState().IsKeyDown(Keys.OemMinus) && prevKey.IsKeyUp(Keys.OemMinus))
{
if (camera.Scale - .25f > 0f)
{
camera.Scale -= .25f;
}
}
if (Keyboard.GetState().IsKeyDown(Keys.R))
{
camera.AttachedToPlayer = true;
MessageDisplaySystem.SetRandomGlobalMessage(stateSpaceComponents, new string[] { string.Empty });
}
if (camera.AttachedToPlayer)
{
Entity playerId = stateSpaceComponents.Entities.Where(x => (x.ComponentFlags & ComponentMasks.Player) == ComponentMasks.Player).FirstOrDefault();
if(stateSpaceComponents.Entities.Where(x => (x.ComponentFlags & ComponentMasks.Observer) == ComponentMasks.Observer).FirstOrDefault() != null)
{
playerId = stateSpaceComponents.Entities.Where(x => (x.ComponentFlags & ComponentMasks.Observer) == ComponentMasks.Observer).FirstOrDefault();
}
if (playerId != null)
{
camera.Target = new Vector2((int)stateSpaceComponents.PositionComponents[playerId.Id].Position.X * cellSize + stateSpaceComponents.DisplayComponents[playerId.Id].SpriteSource.Width / 2,
(int)stateSpaceComponents.PositionComponents[playerId.Id].Position.Y * cellSize + stateSpaceComponents.DisplayComponents[playerId.Id].SpriteSource.Height / 2);
}
if (stateSpaceComponents.PlayerComponent.PlayerJustLoaded)
{
camera.Position = new Vector2((int)stateSpaceComponents.PositionComponents[playerId.Id].Position.X * cellSize + stateSpaceComponents.DisplayComponents[playerId.Id].SpriteSource.Width / 2,
(int)stateSpaceComponents.PositionComponents[playerId.Id].Position.Y * cellSize + stateSpaceComponents.DisplayComponents[playerId.Id].SpriteSource.Height / 2);
}
}
if (Vector2.Distance(camera.Position, camera.Target) > 0)
{
float distance = Vector2.Distance(camera.Position, camera.Target);
Vector2 direction = Vector2.Normalize(camera.Target - camera.Position);
float velocity = distance * 2.5f;
if (distance > 10f)
{
camera.Position += direction * velocity * (camera.Scale >= 1 ? camera.Scale : 1) * (float)gameTime.ElapsedGameTime.TotalSeconds;
}
}
}
