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    <p>I think that the issue is caused by some changes you make to <code>speedRight</code> or to <code>playerRect</code> somewhere in your game. So if you're using VisualStudio just set a breakpoint and check the <code>speedRight</code> and <code>playerRect</code> values.</p> <p>Although there are a few changes you should make to your game. Firstly you should create a public field into the <code>Player</code> class of type <code>Texture</code> as for the <code>Spike</code> class, then create another field of type <code>Vector2</code> which indicates the speed and the direction :</p> <pre><code>public class Player{ public Vector2 DirectionSpeed; public Texture2D Texture; //... public Player(){ //initialize your fields } } </code></pre> <p>Then you can handle the collision by using the method <a href="http://msdn.microsoft.com/en-us/library/microsoft.xna.framework.rectangle.aspx" rel="nofollow"><code>Intersects()</code></a>:</p> <pre><code>if(player.Texture.Bounds.Intersects(spike.Bounds)){ player.DirectionSpeed = Vector.Zero; } </code></pre> <p>If you are trying to handle the collisions with more than one object of type <code>Spike</code>, you have to create a <code>List&lt;Spike&gt;</code> and then iterate with a cicle the entire list:</p> <pre><code>foreach(Spike s in listSpikes){ if(player.Texture.Bounds.Intersects(s.Bounds)){ player.DirectionSpeed = Vector.Zero; } } </code></pre> <hr> <p><strong>EDIT:</strong></p> <p>Moreover if <code>speedRight</code> doesn't equal 1 or a submultiple of <code>spikesRect.Left - 1</code> it's obvious that by increasing the position with it <code>playerRect.Right</code> exceeds <code>spikesRect.Left - 1</code>. A solution could be:</p> <pre><code>if (playerRect.Right &gt; spikesRect.Left - 1) { playerRect.Location = spikesRect.Left - playerRect.Width - 1; speedRight = 0; } </code></pre>
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    1. POBounding Box Collision On Certain Sides
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    1. COThis would give him the same problem he had before. His problem was that the pictures of the player and the spike would overlap because the condition is only considered after the player has penetrated the spike.
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      1. USDaniel Johnson
    2. CO@TheUnrealMegashark Please check the edited part of my answer, it should work for you.
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    3. COYup that's basically a more processor costly implementation of what i put on my answer. Wouldn't make a difference for just a couple spikes but with thousands of spikes little things like extra subtractions can make alot of a difference.
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      1. USDaniel Johnson
 

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