xna

问题 I just started using XNA Framework 4.0 today, and I was wondering what the easiest way was to get input from the keyboard. I recognize a lot of C++ in C# but the whole Java side of it is alien to me. This coupled with XNA is a little confusing so, please be specific and give examples. Thanks. 回答1: If you're comfortable mucking around with the Object Browser in VS, I'd advise looking at Microsoft.Xna.Framework.Input.Keyboard/Keyboardstate. These entries will show you what you have available to

问题 i have 2 bounding spheres, one big and one small , the small will be moving inside the big but i dont want it to go outside the big bounding sphere how do i do it? I tried with the bounding box and the intersection method but it doesn't seem to work. 回答1: Do you have some of your code that we can take a look at, so we can determine why it is not working? Otherwise here is some information on BoundingSpheres: http://msdn.microsoft.com/en-us/library/microsoft.xna.framework.boundingsphere

问题 Ok, in my XNA project i've added simple shader + model loading code, anything works. I created a very simple low-detailed model in 3Ds Max. Exported and imported to XNA with FBX format. The problem is: if i move my simple camera to some distance from this model, one of its components starts to flicker. I tried another model and there is the same situation, some of components start to flicker and only if i get to some distance from model. This flickering (or blinking or ..) appears only with

问题 in XNA, I need to get a reference to the RenderTarget (2D) of the BackBuffer in order to draw it to a texture or change its Usage to Usage.PreserveContents , is there any method which allows me to do that? 回答1: Check out this blog post about what happened to ResolveBackBuffer in XNA 4.0. Basically, you should just use render targets. If you really need the back-buffer, you can use GetBackBufferData . But it only works on the HiDef profile. If you need to change the RenderTargetUsage of the

问题 I tried to run the Windows Phone 7.1 emulator on Visual Studio 2013 on Windows 8.1. When I start the emulator, it shows the following error. Followed by this error when I press "Run the program without getting help": WHY WINDOWS PHONE 7.1 SDK, NOT WINDOWS PHONE 8: The reason why I am setting this up as such is because I want to develop XNA games for Windows Phone 7 to 8. Hence the reason why I am still using the Windows Phone 7.1 developer kit. I have previously created and published XNA

问题 I want to know how to remove part of a Texture from a Texture2D. I have a simple game in which I want to blow up a planet piece by piece, when a bullet hits it "digs" into the planet. The physics are already working but I am stuck on how to cut the texture properly. I need to create a function that takes a Texture2D a position and a radius as input and returns the new Texture2D. Here is an example of the Texture2D before and after what I want to accomplish. http://img513.imageshack.us/img513

问题 When I press left or up arrow keys the sprite gets out of the window/screen. My code: Texture2D m_PlayerShipTex; Rectangle m_PlayerShipHitBox; Vector2 m_PlayerShipPos = new Vector2(400, 486); Vector2 m_PlayerShipOrigin; int m_PlayerShipCurrentFrame = 1; int m_PlayerShipFrameWidth = 62; int m_PlayerShipFrameHeight = 64; float m_Timer = 0f; float m_Interval = 100; public void LoadContent(ContentManager Content) { m_PlayerShipTex = Content.Load<Texture2D>(".\\gameGraphics\\gameSprites\

问题 Is it even possible to continue rendering and updating while resizing the window so that it doesn't stretch? 回答1: This is pretty deeply baked into XNA's Game class's behaviour. I'm dealing with this exact problem now, but I don't have a good solution yet. EDIT: I how now found a solution - but it doesn't answer the bit about scaling - so I've posted it as a question/answer pair over here. You could possibly dive in with reflection and disconnect the events that pause the game's timer when you

问题 How do I load an XNA model from a file path instead of from the content (eg. Model.FromStream but it doesnt exist)?? Texture2D has .FromStream , how can I do the equivalent for Model ? 回答1: You can use Content.Load<Model>("Path here, make sure you use drive letter"); If you really need to have a FromStream method on Model you can use extension methods (Not exactly a perfect duplicate of FromStream but it should work): public static Model FromPath(this Model model, ContentManager content,

问题 I'm making a Breakout clone and having a little trouble with the ball-to-paddle collisions. I have a rectangle represent both the ball and the paddle and when they intersect, the Y vector representing the ball's velocity is negated (as shown below). That all works fine. The problem is when the paddle is moving to the right I want it to nudge the ball a little to the right (as opposed to it just reflecting off normally) and I want the same to happen in the opposite direction is the paddle is