Lösningsförslag till uppgift 8.20

Filer i detta program

• parrot.png

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using System.Collections.Generic;

namespace Uppgift_9._5
{
    /// <summary>
    /// This is the main type for your game.
    /// </summary>
    public class Game1 : Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;

        Texture2D parrotBild;
        List<Vector2> parrotPositioner = new List<Vector2>();
        float parrotSpeed = 3;

        KeyboardState tangentBord = 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()
        {
            for (int x = 0; x < 4; x++)
            {
                for (int y = 0; y < 3; y++)
                {
                    parrotPositioner.Add(new Vector2(100 + 120 * x, 50 + 120 * y));
                }                
            }

            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)
        {
            tangentBord = Keyboard.GetState();

            Vector2 temp;
            for (int i = 0; i < parrotPositioner.Count; i++)
            {
                temp = parrotPositioner[i];

                if (tangentBord.IsKeyDown(Keys.Left))
                {
                    temp.X -= parrotSpeed;
                }
                if (tangentBord.IsKeyDown(Keys.Right))
                {
                    temp.X += parrotSpeed;
                }
                if (tangentBord.IsKeyDown(Keys.Up))
                {
                    temp.Y -= parrotSpeed;
                }
                if (tangentBord.IsKeyDown(Keys.Down))
                {
                    temp.Y += parrotSpeed;
                }

                parrotPositioner[i] = temp;
            }

            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();
            foreach (Vector2 parrotPosition in parrotPositioner)
            {
                spriteBatch.Draw(parrotBild, parrotPosition, Color.White);
            }
            spriteBatch.End();

            base.Draw(gameTime);
        }
    }
}