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POChoosing a random value from an enum and then using switch to draw textures XNA c#
 

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  1. POChoosing a random value from an enum and then using switch to draw textures XNA c#
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    <pre><code> enum rocks { uno = 1, dos, tres } </code></pre> <p>So i declare my enum at the top,</p> <pre><code>rocks[] values = {rocks.uno, rocks.dos, rocks.tres}; Random random = new Random(); rocks randomValue = values[random.Next(values.Length)]; </code></pre> <p>Initialise my random number generator</p> <pre><code>private void drawUno(SpriteBatch spriteBatch) { spriteBatch.Draw(rock1, Vector2.Zero, Color.White); } </code></pre> <p>Have seperate methods to draw each rock</p> <pre><code> public void drawRocks(SpriteBatch spriteBatch) { switch (Rocks) { case rocks.uno: drawUno(spriteBatch); break; case rocks.dos: drawDos(spriteBatch); break; case rocks.tres: drawTres(spriteBatch); break; default: break; } } </code></pre> <p>and a method to draw out whatever rock the random generates</p> <p>I call back the drawRock in my main draw method but nothing comes up, what am i doing wrong?</p> <p>Heres my whole class:</p> <pre><code>namespace PlanetDrill2 { public class UMA : Screen { background bgLayer1; background bgLayer2; background bgLayer3; Texture2D rock1; Texture2D rock2; Texture2D rock3; enum rocks { uno = 1, dos, tres } rocks Rocks; public UMA(Game game, SpriteBatch batch, ChangeScreen changeScreen) : base(game, batch, changeScreen) { bgLayer1 = new background(); bgLayer2 = new background(); bgLayer3 = new background(); player = new Player(); Animation playerAnimation = new Animation(); Texture2D playerTexture = content.Load&lt;Texture2D&gt;("shipAnim"); playerAnimation.Initialize(playerTexture, Vector2.Zero, 80, 160, 5, 30, Color.White, 1f, true); Vector2 playerPosition = new Vector2(game.GraphicsDevice.Viewport.TitleSafeArea.X, game.GraphicsDevice.Viewport.TitleSafeArea.Y + game.GraphicsDevice.Viewport.TitleSafeArea.Height / 2); player.Initialize(playerAnimation, playerPosition); rock1 = content.Load&lt;Texture2D&gt;("rocktexture1"); rock2 = content.Load&lt;Texture2D&gt;("Hardrock"); rock3 = content.Load&lt;Texture2D&gt;("rarerock"); bgLayer1.Initialize(content, "scrollingrocks", game.GraphicsDevice.Viewport.Height, -10); bgLayer2.Initialize(content, "scrollingrocks2", game.GraphicsDevice.Viewport.Height, -6); bgLayer3.Initialize(content, "scrollingrocks3", game.GraphicsDevice.Viewport.Height, -4); float playerMoveSpeed; playerMoveSpeed = 8.0f; rocks[] values = {rocks.uno, rocks.dos, rocks.tres}; Random random = new Random(); rocks randomValue = values[random.Next(values.Length)]; } private void drawUno(SpriteBatch spriteBatch) { spriteBatch.Draw(rock1, Vector2.Zero, Color.White); } private void drawDos(SpriteBatch spriteBatch) { spriteBatch.Draw(rock2, Vector2.Zero, Color.White); } private void drawTres(SpriteBatch spriteBatch) { spriteBatch.Draw(rock3, Vector2.Zero, Color.White); } public void drawRocks(SpriteBatch spriteBatch) { switch (Rocks) { case rocks.uno: drawUno(spriteBatch); break; case rocks.dos: drawDos(spriteBatch); break; case rocks.tres: drawTres(spriteBatch); break; default: break; } } private void UpdatePlayer(GameTime gameTime) { player.Update(gameTime); TouchPanel.EnabledGestures = GestureType.FreeDrag; float positionChange = 0; float oldPosition = 0; while (TouchPanel.IsGestureAvailable) { GestureSample gesture = TouchPanel.ReadGesture(); if (gesture.GestureType == GestureType.FreeDrag) { float newposition = gesture.Position.X; if (oldPosition != 0) { positionChange = newposition - oldPosition; player.Position.X += positionChange; } oldPosition = newposition; } } // Make sure that the player does not go out of bounds player.Position.X = MathHelper.Clamp(player.Position.X, 0, game.GraphicsDevice.Viewport.Width - player.Width); player.Position.Y = MathHelper.Clamp(player.Position.Y, 0, game.GraphicsDevice.Viewport.Height - player.Height); } protected override void SetupInputs() { base.SetupInputs(); } public override void Activate() { base.Activate(); } protected override void LoadScreenContent(ContentManager content) { base.LoadScreenContent(content); } protected override void UpdateScreen(GameTime gameTime, DisplayOrientation screenOrientation) { bgLayer1.Update(); bgLayer2.Update(); bgLayer3.Update(); UpdatePlayer(gameTime); base.UpdateScreen(gameTime, screenOrientation); } protected override void DrawScreen(SpriteBatch batch, DisplayOrientation screenOrientation) { bgLayer3.Draw(batch); bgLayer2.Draw(batch); bgLayer1.Draw(batch); player.Draw(batch); drawRocks(batch); base.DrawScreen(batch, screenOrientation); } } } </code></pre>
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    1. COrock r = (rock)Enum.ToObject(typeof(rock),randomizer.Next(0,Enum.GetValues(typeof(rock)).Length));
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