Difference between revisions of "Game Programming Class2"

1     // Frame rate is 30 fps by default for Windows Phone.  
2     TargetElapsedTime = TimeSpan.FromTicks(333333);  
3   
4     // Pre-autoscale settings.  
5     graphics.PreferredBackBufferWidth = 480;  
6     graphics.PreferredBackBufferHeight = 800;

  1 public class Game1 : Microsoft.Xna.Framework.Game
  2     {
  3         GraphicsDeviceManager graphics;
  4         SpriteBatch spriteBatch;
  5 
  6         Texture2D PacMan;
  7         Vector2 PacManLoc;      //Pacman location
  8         Vector2 PacManDir;      //Pacman direction
  9         float PacManSpeed;              //speed for the PacMan Sprite in pixels per frame per second
 10 
 11         public Game1()
 12         {
 13             graphics = new GraphicsDeviceManager(this);
 14             Content.RootDirectory = "Content";
 15 
 16             //Change the frame fate to 30 Frames per second the default is 60fps
 17             //TargetElapsedTime = TimeSpan.FromTicks(333333); // you may need to add using System; to get the TimeSpan function
 18         }
 19 
 20         /// <summary>
 21         /// Allows the game to perform any initialization it needs to before starting to run.
 22         /// This is where it can query for any required services and load any non-graphic
 23         /// related content.  Calling base.Initialize will enumerate through any components
 24         /// and initialize them as well.
 25         /// </summary>
 26         protected override void Initialize()
 27         {
 28             // TODO: Add your initialization logic here
 29 
 30             base.Initialize();
 31         }
 32 
 33         /// <summary>
 34         /// LoadContent will be called once per game and is the place to load
 35         /// all of your content.
 36         /// </summary>
 37         protected override void LoadContent()
 38         {
 39             // Create a new SpriteBatch, which can be used to draw textures.
 40             spriteBatch = new SpriteBatch(GraphicsDevice);
 41 
 42             // TODO: use this.Content to load your game content here
 43             PacMan = Content.Load<Texture2D>("pacmanSingle");
 44             //Center PacMan
 45             PacManLoc = new Vector2(graphics.GraphicsDevice.Viewport.Width / 2,
 46                 graphics.GraphicsDevice.Viewport.Height / 2); //Start with PacManLoc in the center of the screen
 47             PacManDir = new Vector2(1, 0); //start moving left
 48 
 49             PacManSpeed = 20;          //initial pacman speed
 50 
 51         }
 52 
 53         /// <summary>
 54         /// UnloadContent will be called once per game and is the place to unload
 55         /// all content.
 56         /// </summary>
 57         protected override void UnloadContent()
 58         {
 59             // TODO: Unload any non ContentManager content here
 60         }
 61 
 62         /// <summary>
 63         /// Allows the game to run logic such as updating the world,
 64         /// checking for collisions, gathering input, and playing audio.
 65         /// </summary>
 66         /// <param name="gameTime">Provides a snapshot of timing values.</param>
 67         protected override void Update(GameTime gameTime)
 68         {
 69             // Allows the game to exit
 70             if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
 71                 this.Exit();
 72 
 73             // TODO: Add your update logic here
 74 
 75             //Elapsed time since last update will be used to correct movement speed
 76             float time = (float)gameTime.ElapsedGameTime.TotalMilliseconds;
 77 
 78 
 79             //Turn PacMan Around if it hits the edge of the screen
 80             if ((PacManLoc.X > graphics.GraphicsDevice.Viewport.Width - PacMan.Width)
 81                 || (PacManLoc.X < 0)
 82                )
 83             {
 84                 PacManDir = Vector2.Negate(PacManDir);
 85             }
 86 
 87             //Move PacMan
 88             //Simple move Moves PacMac by PacManDiv on every update
 89             PacManLoc = PacManLoc + PacManDir * PacManSpeed;      //no good not time corrected
 90 
 91             //Time corrected move. MOves PacMan By PacManDiv every Second
 92             //PacManLoc = PacManLoc + ((PacManDir * PacManSpeed) * (time/1000));      //Simple Move PacMan by PacManDir
 93 
 94 
 95 
 96             base.Update(gameTime);
 97         }
 98 
 99         /// <summary>
100         /// This is called when the game should draw itself.
101         /// </summary>
102         /// <param name="gameTime">Provides a snapshot of timing values.</param>
103         protected override void Draw(GameTime gameTime)
104         {
105             graphics.GraphicsDevice.Clear(Color.CornflowerBlue);
106 
107             // TODO: Add your drawing code here
108             spriteBatch.Begin();
109             spriteBatch.Draw(PacMan, PacManLoc, Color.White);
110             spriteBatch.End();
111 
112             base.Draw(gameTime);
113         }
114     }