XNA 4.0 Game Development by Example Beginner's Guide

Time for action – updating and drawing the player's ship

1. Add the imposeMovementLimits() helper method to the PlayerManager class:

   private void imposeMovementLimits()
   {
       Vector2 location = playerSprite.Location;
   
       if (location.X < playerAreaLimit.X)
           location.X = playerAreaLimit.X;
   
       if (location.X > 
           (playerAreaLimit.Right - playerSprite.Source.Width))
           location.X = 
               (playerAreaLimit.Right - playerSprite.Source.Width);
   
       if (location.Y < playerAreaLimit.Y)
           location.Y = playerAreaLimit.Y;
   
       if (location.Y > 
           (playerAreaLimit.Bottom - playerSprite.Source.Height))
           location.Y = 
               (playerAreaLimit.Bottom - playerSprite.Source.Height);
   
       playerSprite.Location = location;
   }

2. Add the Update() method to the PlayerManager class:

   public void Update(GameTime gameTime) { PlayerShotManager.Update(gameTime); ...