Lösningsförslag till uppgift 8.15

Filer i detta program

• parrot.png

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;

namespace Uppgift_8._15
{
    /// <summary>
    /// This is the main type for your game.
    /// </summary>
    public class Game1 : Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;

        Texture2D parrotBild;
        Vector2 parrotPosition = new Vector2(100, 100);
        float parrotHastighet = 3;

        // 0 = stilla, 1 = höger, 2 = stilla, 3 = vänster
        int rörelseSteg = 0;

        KeyboardState tangentbord = Keyboard.GetState();
        KeyboardState gammaltTangentbord = Keyboard.GetState();

        public Game1()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";
        }

        /// <summary>
        /// Allows the game to perform any initialization it needs to before starting to run.
        /// This is where it can query for any required services and load any non-graphic
        /// related content.  Calling base.Initialize will enumerate through any components
        /// and initialize them as well.
        /// </summary>
        protected override void Initialize()
        {
            // TODO: Add your initialization logic here

            base.Initialize();
        }

        /// <summary>
        /// LoadContent will be called once per game and is the place to load
        /// all of your content.
        /// </summary>
        protected override void LoadContent()
        {
            // Create a new SpriteBatch, which can be used to draw textures.
            spriteBatch = new SpriteBatch(GraphicsDevice);

            parrotBild = Content.Load<Texture2D>("parrot");
        }

        /// <summary>
        /// UnloadContent will be called once per game and is the place to unload
        /// game-specific content.
        /// </summary>
        protected override void UnloadContent()
        {
            // TODO: Unload any non ContentManager content here
        }

        /// <summary>
        /// Allows the game to run logic such as updating the world,
        /// checking for collisions, gathering input, and playing audio.
        /// </summary>
        /// <param name="gameTime">Provides a snapshot of timing values.</param>
        protected override void Update(GameTime gameTime)
        {
            gammaltTangentbord = tangentbord;
            tangentbord = Keyboard.GetState();

            // Uppdatera rörelseSteg
            if (tangentbord.IsKeyDown(Keys.Space) && gammaltTangentbord.IsKeyUp(Keys.Space))
            {
                rörelseSteg++;
                if (rörelseSteg > 3)
                {
                    rörelseSteg = 0;
                }
            }

            // Flytta bilden
            if (rörelseSteg == 1)
            {
                parrotPosition.X += parrotHastighet;
            }
            else if (rörelseSteg == 3)
            {
                parrotPosition.X -= parrotHastighet;
            }

            base.Update(gameTime);
        }

        /// <summary>
        /// This is called when the game should draw itself.
        /// </summary>
        /// <param name="gameTime">Provides a snapshot of timing values.</param>
        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(Color.CornflowerBlue);

            spriteBatch.Begin();
            spriteBatch.Draw(parrotBild, parrotPosition, Color.White);
            spriteBatch.End();

            base.Draw(gameTime);
        }
    }
}