spieleprogrammierer.de - Forum und Wiki zur Spieleprogrammierung und Spieleentwicklung

C#-Quelltext

public class Game1 : Microsoft.Xna.Framework.Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;
        World world;
        Body rectangle, rectangle2, rectangle3, rectangle4, rectangle5, playerrect, ladderrectangle;
        Texture2D rectangleSprite, playerSprite, ladderSprite;

        private static float _displayUnitsToSimUnitsRatio = 100f;

        public static Vector2 ToDisplayUnits(Vector2 simUnits)
        {
            return simUnits * _displayUnitsToSimUnitsRatio;
        }

        private bool isOnGround;

        bool Player_OnCollision(Fixture fixtureA, Fixture fixtureB, FarseerPhysics.Dynamics.Contacts.Contact contact)
        {
            if (fixtureB.CollisionCategories == Category.Cat5)
            {
                  isOnGround = true;
            }
            return true;
        }

        void Player_OnSeparation(Fixture fixtureA, Fixture fixtureB)
        {
            if (fixtureB.CollisionCategories == Category.Cat5)
            {
                isOnGround = false;
            }
        }

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

        protected override void Initialize()
        {
            base.Initialize();
        }

        protected override void LoadContent()
        {
            spriteBatch = new SpriteBatch(GraphicsDevice);
            playerSprite = Content.Load<Texture2D>("retromario");
            rectangleSprite = Content.Load<Texture2D>("retrotile");
            ladderSprite = Content.Load<Texture2D>("retroladder");

            if (world == null)
            {
                world = new World(new Vector2(0, 2));
            }
            else
            {
                world.Clear();
            }

            playerrect = BodyFactory.CreateRectangle(world, 0.64f, 0.64f, 1.0f);
            playerrect.BodyType = BodyType.Dynamic;
            playerrect.Position = new Vector2(0.80f, 0f);
            playerrect.FixedRotation = true;

            rectangle = BodyFactory.CreateRectangle(world, 0.64f, 0.64f, 1.0f);
            rectangle.BodyType = BodyType.Static;
            rectangle.Position = new Vector2(1.60f, 4.16f);
            rectangle.CollisionCategories = Category.Cat5;

            rectangle2 = BodyFactory.CreateRectangle(world, 0.64f, 0.64f, 1.0f);
            rectangle2.BodyType = BodyType.Static;
            rectangle2.Position = new Vector2(0.32f, 4.80f);
            rectangle2.CollisionCategories = Category.Cat5;

            rectangle3 = BodyFactory.CreateRectangle(world, 0.64f, 0.64f, 1.0f);
            rectangle3.BodyType = BodyType.Static;
            rectangle3.Position = new Vector2(0.96f, 4.80f);
            rectangle3.CollisionCategories = Category.Cat5;

            rectangle4 = BodyFactory.CreateRectangle(world, 0.64f, 0.64f, 1.0f);
            rectangle4.BodyType = BodyType.Static;
            rectangle4.Position = new Vector2(1.60f, 2.36f);
            rectangle4.CollisionCategories = Category.Cat5;

            rectangle5 = BodyFactory.CreateRectangle(world, 0.64f, 0.64f, 1.0f);
            rectangle5.BodyType = BodyType.Static;
            rectangle5.Position = new Vector2(1.60f, 4.80f);
            rectangle5.CollisionCategories = Category.Cat5;

            ladderrectangle = BodyFactory.CreateRectangle(world, 0.40f, 1.80f, 1.0f);
            ladderrectangle.BodyType = BodyType.Static;
            ladderrectangle.Position = new Vector2(1.60f, 2.94f);
           
            playerrect.OnCollision += Player_OnCollision;
            playerrect.OnSeparation += Player_OnSeparation;
        }
        
        protected override void Update(GameTime gameTime)
        {
            float elapsed = (float)gameTime.ElapsedGameTime.TotalSeconds;
            world.Step(Math.Min(elapsed, (1f / 60f)));
            KeyboardState kbState = Keyboard.GetState();
           
            // Move the player
            if (kbState.IsKeyDown(Keys.Left))
           {
               playerrect.ApplyForce(new Vector2(-0.5f, 0));
           }
           if (kbState.IsKeyDown(Keys.Right))
           {
               playerrect.ApplyForce(new Vector2(0.5f, 0));
           }
           if (isOnGround == true)
           {
             if (kbState.IsKeyDown(Keys.Space))
             {
                 playerrect.ApplyForce(new Vector2(0, -24.0f));
             }
           }

            base.Update(gameTime);
        }

        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(Color.CornflowerBlue);
            spriteBatch.Begin();
            spriteBatch.Draw(playerSprite, ConvertUnits.ToDisplayUnits(playerrect.Position),
                                           null,
                                           Color.White, playerrect.Rotation, new Vector2(playerSprite.Width / 2.0f, playerSprite.Height / 2.0f), 1f,
                                           SpriteEffects.None, 0f);

            spriteBatch.Draw(rectangleSprite, ConvertUnits.ToDisplayUnits(rectangle.Position),
                                            null,
                                            Color.White, rectangle.Rotation, new Vector2(rectangleSprite.Width / 2.0f, rectangleSprite.Height / 2.0f), 1f,
                                            SpriteEffects.None, 0f);

            spriteBatch.Draw(rectangleSprite, ConvertUnits.ToDisplayUnits(rectangle2.Position),
                                            null,
                                            Color.White, rectangle2.Rotation, new Vector2(rectangleSprite.Width / 2.0f, rectangleSprite.Height / 2.0f), 1f,
                                            SpriteEffects.None, 0f);

            spriteBatch.Draw(rectangleSprite, ConvertUnits.ToDisplayUnits(rectangle3.Position),
                                            null,
                                            Color.White, rectangle3.Rotation, new Vector2(rectangleSprite.Width / 2.0f, rectangleSprite.Height / 2.0f), 1f,
                                            SpriteEffects.None, 0f);

            spriteBatch.Draw(rectangleSprite, ConvertUnits.ToDisplayUnits(rectangle4.Position),
                                            null,
                                            Color.White, rectangle4.Rotation, new Vector2(rectangleSprite.Width / 2.0f, rectangleSprite.Height / 2.0f), 1f,
                                            SpriteEffects.None, 0f);

            spriteBatch.Draw(rectangleSprite, ConvertUnits.ToDisplayUnits(rectangle5.Position),
                                          null,
                                          Color.White, rectangle5.Rotation, new Vector2(rectangleSprite.Width / 2.0f, rectangleSprite.Height / 2.0f), 1f,
                                          SpriteEffects.None, 0f);

            spriteBatch.Draw(ladderSprite, ConvertUnits.ToDisplayUnits(ladderrectangle.Position),
                                         null,
                                         Color.White, ladderrectangle.Rotation, new Vector2(ladderSprite.Width / 2.0f, ladderSprite.Height / 2.0f), 1f,
                                         SpriteEffects.None, 0f);
            spriteBatch.End();

            base.Draw(gameTime);
        }
    }