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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265 views

render sprites with a transparent background (XNA)

For my game I want to make a map of the world. Per country I made a file with the border of the country and the rest of background is transparent. This way all my files have the same width and height. ...
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1answer
337 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
118 views

What does Rectangle.Intersect means/do?

Ok I have two rectangles one is the ball and other is the paddle. 1. if(ball.rectangle.intersects(paddle.rectangle)) y = -Math.Abs(y); and 2. ...
2
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1answer
886 views

How to use elapsed game time for timing

I want that my ship shoots beam after every 2 seconds. How do I make that happen? and also I want that after 50 shots I want to give 10 seconds to reload the gun. I know both of my problems can be ...
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1answer
62 views

Shared Texture2D in XNA

I am trying to define texture2d objects as shared. The reason of why I am trying to do is, I made an xna user control and my project loads unlimited (as much as the user wants) my XNA User Control. ...
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264 views

Monogame working with Krypton

I am trying to make a simple 2D game engine using Monogame and the Krypton 2.0 lighting engine. So far I have succeeded in rendering a light but I am unable to generate any shadows from any hull's. ...
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1answer
198 views

Collision Issues

When I run the collision code, there are no errors, but when I shoot the enemy nothing happens..... Any problems that are blindingly obvious? Class Level Variables public Model model { get; ...
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2answers
944 views

Repeatedly Shooting Bullets

I'm making an XNA shooter game. How do I have my sprite repeatedly shoot bullets instead of waiting for one bullet to go off the screen. Do I do this with and array?
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1answer
238 views

First person shooter camera movement

I am making an FPS in XNA. I cannot seem to make a FPS camera that I can move Forward, Back, Side to Side using the keyboard. How do I do that?
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3answers
66 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 ...
2
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1answer
84 views

What is the best way to follow this book using XNA 4.0 instead of XNA 2.0

I found a reference to this book on the Microsofot Indie games forums: http://www.amazon.com/dp/1430209798/ref=pe_385040_30332200_pe_309540_26725410_item I'm really interested in it, because the ...
6
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2answers
303 views

Where to put Entity Death Events in a Component/System Design

Entities in my game are nothing more than a collection of components, tied together with an entityID. I have (near) data-only components, and systems that work on the data. One of these components is ...
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1answer
347 views

C# XNA4 2D Collision Detection

I am working on a 2D engine in Xna and am running in a bit of trouble with Collision implementation. What I want to do is have an interface ICollidable that I can add to GameObjects that are ...
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1answer
353 views

Pixel Shader - apply a mask (XNA)

I'd like to apply a simple few masks to few images. The first mask I'd like to implement is mask like: XXXOOO I mean, that on the right everything is masked (to black), and on the left everything ...
0
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1answer
139 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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1answer
181 views

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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1answer
903 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 ...
2
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3answers
165 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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0answers
108 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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0answers
326 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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2answers
404 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 ...
2
votes
1answer
242 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 ...
3
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1answer
141 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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votes
3answers
576 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 ...
4
votes
1answer
215 views

Creating rectangles from the inner part of a texture2D

Ok, this may be hard to understand, but I'll do my best. You will see that the first image is a normal mario, and the other is the result I am looking for. I'm trying to find a way to extract ...
4
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2answers
290 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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1answer
120 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 ...
10
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1answer
411 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 ...
2
votes
1answer
205 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 ...
4
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2answers
164 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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0answers
71 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 ...
0
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1answer
55 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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3answers
3k views

2D XNA Tile Based Lighting. Ideas and Methods [closed]

I am currently working on developing a 2D tile based game, similar to the game 'Terraria'. We have the base tile and chunk engine working and are now looking to implement lighting. Instead of the tile ...
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1answer
465 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 ...
3
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0answers
177 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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votes
1answer
227 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 ...
8
votes
1answer
801 views

Implementing water effects (splashes) into XNA 4.0 game [closed]

I am creating a 2D XNA game and came across a tutorial on adding water effects (splashes) to an XNA game but after implementing it into my game I can't get it to scale down. Currently it takes up the ...
1
vote
1answer
193 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 ...
1
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1answer
2k 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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votes
1answer
486 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 ...
6
votes
1answer
711 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 ...
0
votes
1answer
107 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 ...
1
vote
1answer
199 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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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 ...
0
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2answers
2k views

Load SpriteFont in XNA

I'm planning on my game using multiple backgrounds so I'm trying to use spritefonts to draw the text. Every time I load my spritefont I get a error. Line1 = content.Load<SpriteFont>("Courier ...
2
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1answer
588 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 ...
3
votes
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 ...
0
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1answer
75 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
275 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 ...
0
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2answers
76 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 ...