XNA Game Studio 4.0 is a programming environment that allows you to use Visual Studio to create games for Windows Phone, the Xbox 360 console, and Windows-based computers.

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Using a Vertex Buffer and DrawUserIndexedPrimitives?

Let's say I have a large but static world and only a single moving object on said world. To increase performance I wish to use a vertex and index buffer for the static part of the world. I set them ...
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124 views

How to control in the vertex shader where pixel ends up in the renderTarget?

What if I have an arbitrary renderTarget, that is smaller than the screen (say it is 1x1 pixel) and I want to make sure in the VertexShaderFunction that all my pixels end up exactly in that 1 pixel ...
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3answers
158 views

Should Draw method calculate the element's screen location?

Should Update take care of calculating the drawing position of element or should it be done exlusively in Draw method? If I calculate the drawing position of element in Update and then store it as ...
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98 views

DepthStencilState System.ObjectDisposedException [closed]

I developed a Windows Phone 7 & 8 game and released it already. Having integrated BugSense, I received a handful of errors mainly from specific versions of Windows Phone 8 OS (mainly ...
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215 views

How do I generate a mipmap for a texture loaded from a stream?

I am loading a Texture2d from a stream: public static Texture2D GetTexture(GraphicsDevice dev, System.Drawing.Bitmap bmp) { Texture2D texture; using (MemoryStream s = new MemoryStream()) ...
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285 views

XNA 4.0 Pixel Shader 3.0 Exact Texture Lookup/Sample Issue

I am stuck on trying to solve this problem. I originally had some shaders written that worked for XNA 3.1, but after converting to XNA 4.0 they would no longer compile due to instruction counts, flow ...
2
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1answer
215 views

XNA Framework Reach profile does not support separate alpha blend

Yesterday I released my app 'Pic Words' to the windows phone store. It is an Silverlight/XNA app that runs on Windows Phone 7.1 & 8. I have BugSense incorporated into my app. Today I started ...
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2answers
417 views

XNA 3.1 to 4.0 Vertex Shader Not Drawing

I have recently been converting our XNA 3.1 game to XNA 4.0 and am stuck on the shaders. I have the game running, but nothing is drawing to the screen, except things not using a shader. This is only ...
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1answer
269 views

Best way to load texture2d tiles in xna?

I am making a test xna game as a learning exercise and I have a small question about using 2d textures. Basically the game is a grid of different 'tiles' which are taken from a text map file. I ...
3
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1answer
129 views

Smoothing the scrolling path in 2D

I have the following problem: In a 2D game the screen can scroll in any of the 4 directions. Basically, the center of the screen during scrolling moves from (x1,y1) to (x2, y2) whereby (x1,y1) is the ...
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3answers
64 views

2D Camera doesn't work when I have split my code into DrawableComponents

I have the following camera written: public class Camera { public Vector2 Position; Viewport Viewport; public Matrix Transformation { get { return ...
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1answer
236 views

World to Pixel Transformation

My objects have a location in world coordinates (basically 1.0f is a meter). If I simply draw my objects using their world coordinates, each meter will correspond to a pixel. Obviously that's not what ...
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2answers
346 views

How can I actually understand Instanced Geometry Rendering - so that I can implement it the way I need it

I'm stuck trying to implement instanced mesh rendering in my project. Particularly because I am failing to understand how certain components actually function - and how the drawing routine is actually ...
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2answers
257 views

Refractive blur in XNA?

I'm writing a 2D hack-and-slash game using XNA. I really want to implement the blur-like, refractive effect of a sword or such moving really quickly, seen in such games as Dust: An Elysian Tail and ...
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3answers
554 views

How do I target a tank turret with an offset barrel?

I have a tank model consisting of multiple parts, a body, a turret and the barrel of the gun. The turret is offset from the body origin and can rotate around the Y axis(up). The barrel is connected to ...
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1answer
394 views

How to know if the player is signed in?

I was wondering if there's any way to know if the "player" is signed in or not? Something like this: if (GamePad.GetState(PlayerIndex.Two).IsConnected && !Gamer.PlayerTwo.IsSignedIn) So ...
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109 views

Resizing a parallax background (bug)

I'm attempting my first 2D vertical scroller and can't seem to get the background size to work. For some reason, it stays small. I think in the beginning of the parallax scrolling class, I was told to ...
2
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1answer
203 views

XNA matrix order problem

I want a matrix that scales first and then rotates. I tried the code below, but it didn't work. zRotation, yRotation and xRotation are rotations that shouldn't be affected by the origin. allrot should ...
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56 views

Certain grid lines not rendering as expected

I am drawing a simple quad (a triangle strip with 4 vertices) as the floor and then drawing an 8x8 grid over top (a collection of vertex pairs for a line list). The vertical grid lines work fine ...
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1answer
52 views

stretch images when window is re-sized in XNA

Is there a way to re-size all the images inside the view port in a XNA project. At the moment when I re-size the view port the background stays at the same size of the image when I want it to re-size, ...
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1answer
713 views

Loading images in XNA 4.0; “Cannot Open File” Problems

Okay, I'm writing a game in C#/XNA 4.0 and am utterly stumped at my current juncture: Sprite animation. I understand how it works and have all the code in place, but my ContentLoader won't open my ...
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1answer
407 views

Windows Phone XAML and XNA Apps with Game Components

I am using the Windows Phone Template "Windows Phone XAML and XNA Apps" and targeting Windows Phone 7/8. Most examples show your game inheriting from Microsoft.Xna.Framework.Game and then adding ...
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150 views

ways to program glitch style effects [closed]

Most tutorials for generating glitch art usually has to do with some form of manipulation of the compression of files. Should my goal instead to replicate the look of these glitches in shaders or is ...
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1answer
404 views

Unable to create suitable graphics device?

I've been following the Eye of the Dragon tutorial, which is basicly a guide to making a 2D RPG game, obviously. I recently finished the tutorial about making pop up screens in the menu and changed ...
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1answer
210 views

extremely frustrating yet noob question [closed]

This is incredibly embarrassing but.. I musta hit a key or something but whenever i go to edit a line of code i have, i can't just add extra code in.. it always writes over the top of my code and ...
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1answer
147 views

How to grab textures from a texture atlas to be applied to 3d objects

Fairly basic question, but I'm having trouble on finding information on this sort of thing for beginners. I'm just trying to make cubes with different textures on the sides as a starting point. I have ...
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1answer
1k views

What is the status of Monogame now that XNA has been discontinued?

XNA has officially been discontinued, with support no longer being offered by Microsoft. Does this mean that Monogame has died also? I see that the site still says it is based upon XNA 4. What is the ...
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175 views

Issues with touch buttons in XNA (Release state to be precise)

I am trying to make touch buttons in WP8 with all the states (Pressed, Released, Moved), but the TouchLocationState.Released is not working. Here's my code: Class variables: bool touching = false; ...
6
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1answer
541 views

Do I need to rewrite my HLSL shaders when porting from XNA to MonoGame?

I'm looking at porting an XNA project I have to monogame, but I have a fair number of HLSL shaders. It seems that Monogame for PC uses OpenGL as the rendering backend, and I'd rather not have to ...
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1answer
400 views

XNA PC vs Monogame Online Multiplayer [closed]

I've got a mostly working PC game in XNA 4, and am looking to make it networked. From the documentation it seems that I can use XNA Networking through GFWL to do LAN sessions, but not online sessions ...
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1answer
165 views

How to calculate the Screen Position of a bounding sphere/box?

Synopsis: What I have is an object rendered on the screen. I need to calculate the top-left / bottom-right of it's location on the screen in Screen Coordinates. Explanation: The object is ...
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95 views

XNA 4.0 thick triangle strip to fix aliasing issues upon rotation

My triangle strip based lines are disappearing intermittently when I rotate my camera around the X axis. I was advised that this is due to aliasing issues and that "At a certain angle when its edge ...
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3answers
2k views

How to create / draw clickable object (such as Button in WinForm) in XNA WP8?

I am developing a 2D (No 3D in every aspect) Windows Phone 8 turn based tactical games for my college project. I use Monogame. I want to draw an object similar to Button in windows form, that if the ...
2
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1answer
484 views

Collision avoidance (AI)

Now my 3D model has complete AI behaviours, but my model has no collision avoidance while he is moving towards the player! Because of this, he gets stuck in front of 3D blocks sometimes. I think the ...
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1answer
211 views

Sharing the effect [closed]

my problem is : If I load 2 models ( the same model zombie ) and give them the same effect I got the following error : for(int i =0 ; i<2 ; i++) { dwarfModel[i].model ...
3
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1answer
99 views

center point of a text?

i'm drawing a text using a spritefont and the draw.string function of the spritebatch object. in some point, i need to augment the size of the text, so i use a variable to scale it. all this is ...
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2answers
495 views

SpriteFont Exception, no such character?

I have such spriteFont: <?xml version="1.0" encoding="utf-8"?> <!-- This file contains an xml description of a font, and will be read by the XNA Framework Content Pipeline. Follow the ...
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1answer
69 views

International Font in XNA?

I'd like to know are there some international fonts? I mean a font for all European languages including Russia. The question is about XNA fonts.
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1answer
242 views

Damage indicator screen overlay

I want to make something already done by a lot of games , which is when I am taking so much hits from enemy red screen drawn like the following , using XNA 4.0: after it's drawn and I am still alive ...
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2answers
66 views

Can't show an object in a tapped coordinate

So hi, I have a problem. I want to show an object (Texture2D) in an area tapped by user. This is my fields : List<Texture2D> list = new List<Texture2D>(); List<Vector2> list2 = new ...
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1answer
355 views

How do I convert my XNA game to Android without using MonoGame?

I want to convert my XNA Game to Android, but I don't want to use MonoGame or ExEn. How can I do this?
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1answer
88 views

My Sprite Rectangle moves, but my sprite doesn't

Here's the issue, When I build, everything loads fine, everything works, but then, when you enter the game, the sprite is there. However, The sprite does not move, the sprite RECTANGLE does. Meaning ...
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3answers
312 views

Trying to get enemy sprites to move on C#

In my XNA game, I'm have the enemy sprites loaded and in the game screen. However, I put in the code to update their position in the Update method of the main class. The objective is to get the ...
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1answer
101 views

Where to put input detector?

So below is the usual XNA Game Component override method. If I want to add a touch input detector (lets say, I want to draw a rectangle under touched screen area), where do I put it and how? Googled ...
2
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1answer
104 views

XNA Scale and Render Targets

I'm working on a top down Strategy/RPG/Tower Defense XNA Game for Windows, and I'm running into an issue while scaling. My display mode is 1680 X 1050, and that is what I'm setting the ...
2
votes
1answer
285 views

Include a custom font when publishing in Visual Studio XNA

I have a custom font called "Gold Box Games" that I want to use in a game I'm making. I have the font installed on my computer and it works just fine in the program when I run it in test. However, ...
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23 views

Transparent RednerTarget2D afrer blending

How to get transparent bacground in RenderTarget2D after alpha blending? I use Color.Transparent to clear the render target, but I get black color after blending where alpha is 255 even that there is ...
4
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2answers
154 views

What's involved in resetting the graphics device?

I'm playing with XNA 4.0, VS2010. I've created a window (not maximized) and drawn some sprites. All is good until I resize the window, after which the sprites stop displaying or only partially ...
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1answer
305 views

XNA - 2D Rotation of an object to a selected direction

I'm trying to figure out the best way of rotating an object towards the directional input of the user. I'm attempting to mimic making turns on ice skates. For instance, if the player is moving right ...
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1answer
224 views

How to prevent the player from clicking too fast [closed]

I'm having trouble with some bullets in my game, the M1911, which is supposed to be semi-auto is only capable of shooting one projectile per mouse click (trying to learn how to do multiple ones at ...