XNA is a game framework by Microsoft that allows deployment for Xbox Live Indie Games as well as Windows Phone 7.

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How do I temporarily pause an XNA game?

Collision with an enemy should pause the game for 1.5 seconds. My failed attempt: bool tPause; float timer; public ovveride Update(GameTime gameTime) { if(!tPause) { // ... ...
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191 views

Best way to blend colors in tile lighting? (XNA)

I have made a color, decent, recursive, fast tile lighting system in my game. It does everything I need except one thing: different colors are not blended at all: Here is my color blend code: ...
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41 views

Converting a WIndows Store App to Android

I cross posted this from SO I'm very new to Xamarin. I have a few published Windows Store apps and want to convert them to Android. I'm attempting to use Xamarin for this. I'm just using the free ...
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1answer
74 views

Point in Polygon, Ray Method: ending infinite line

Having a bit of trouble with point in polygon collision detection using the ray method i.e. http://en.wikipedia.org/wiki/Point_in_polygon My problem is I need to give an end to the infinite line ...
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1answer
77 views

MonoGame not all letters being drawn with DrawString

I'm currently making a dynamic user interface for my game and are setting up having text on my buttons. I'm having an odd issue where, when i use a specific piece of code to determine the text ...
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2answers
205 views

How can I make an object's hitbox rotate with its texture?

In XNA, when you have a rectangular sprite that doesnt rotate, it's easy to get its four corners to make a hitbox. However, when you do a rotation, the points get moved and I assume there is some kind ...
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93 views

XNA - Finding boundaries in isometric tilemap

I have an issue with my 2D isometric engine. I'm using my own 2D camera class which works with matrices and need to find the tilemaps boundaries so the user always sees the map. Currently my map size ...
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1answer
124 views

XNA Load/Unload logic (contentmanager?)

I am trying to make a point-and-click adventure game with XNA, starting off simple. My experience with XNA is about a month old now, know how the classes and inheritance works (basic stuff). I have a ...
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42 views

XNA Guide text input - maximum length

so I am using Guide.BeginShowKeyboardInput to get the user to enter their username. I would like this to be limited to 20 characters, and it seems to break expected behaviour to let them input ...
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46 views

XNA Shader deformation event driven

I’m working on this tutorial trying to figure out how i can modify the code in order to get the deformation along only one axis (for example Z axis) when I hit a button on my keybord. In other words, ...
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53 views

Applying textures to 3D models

I want to apply textures to a 3D Model in XNA 4. Whatever I saw on the internet was to apply the textures in the modeling tool and then load the model (*.fbx) into XNA. Is it possible to load the ...
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46 views

XNA Windows Resolution / Mouse Position Bug

In XNA, when in windowed mode and resolution (set via PreferredBackBufferWidth/Height) is close to the resolution of the display, the view is distorted (zoomed in a bit)and the mouse coordinates are ...
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1answer
60 views

RenderState in XNA 4

I was going through this tutorial for having transparency which can be used to solve my problem here. The code is written in XNA 3 but I'm using XNA 4. What is the alternative for the following code ...
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376 views

Picture rendered from above and below using an Orthographic camera do not match

I'm using an orthographic camera to render slices of a model (in order to voxelize it). I render each slice both from above and below in order to determine what is inside each slice. The model I ...
2
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1answer
105 views

XNA - 3D AABB collision detection and response

I've been fiddling around with 3D AABB collision in my voxel engine for the last couple of days, and every method I've come up with thus far has been almost correct, but each one never quite worked ...
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1answer
380 views

XNA, how to draw two cubes standing in line parallelly?

I just got a problem with drawing two 3D cubes standing in line. In my code, I made a cube class, and in the game1 class, I built two cubes, A on the right side, B on the left side. I also setup an ...
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103 views

Zooming in isometric engine using XNA

I´m currently working on an isometric game engine and right now I´m looking for help concerning my zoom function. On my tilemap there are several objects, some of them are selectable. When a house ...
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1answer
259 views

MonoGame audio format

MP4 AAC is a well supported playback format according to the docs, but the MonoGame content project only seems to compile MP3/WAV/WMA formats. I tried to put raw aac files in my android game but the ...
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2answers
447 views

Zelda-style top-down RPG. How to store tile and collision data?

I'm looking to build a Zelda: LTTP style top-down RPG. I've read a lot on the subject and am currently going back and forth on a few solutions. I'm using C#, MonoGame, and Tiled. For my tile maps, ...
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1answer
70 views

Textures have lines between them when zoomed out

These are two screenshots from my new game, a top-down RTS with tiles. The first one is from a normal view with no zoom, the second one is a zoomed out view of the whole map: In the first image, ...
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1answer
80 views

Why are my 2D world click-positions offset after camera movement?

I'm writing a 2D game engine. I need to add a camera to my world that can zoom in and out as well as move away from its initial position at (0,0) at the center of the world. The main issue can be ...
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1answer
99 views

XNA 4.0 HLSL - strange depth map

I want to draw my pre-rendered depth map to the scene. I get my depth value in the following way: basically (Pixel Shader) // Depth is stored as distance from camera / far plane distance, 1-d for ...
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1answer
106 views

SpriteBatch, trying to reduce draw calls

This my main draw call: Matrix Camera_transformation = player_camera_.GetTransformation(); // Background - AlphaBlend spritebatch.Begin(SpriteSortMode.Deferred, ...
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1answer
98 views

How can I scale Farseer bodies so that they work on different screen resolutions?

I created a little Windows Phone 8 game that supports multiple resolutions. If the resolution of the device is less than 720p, then the sprites and their corresponding Farseer bodies need to be scaled ...
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1answer
43 views

Why is BayazitDecomposer inaccessible when upgrading from Farseer 3.3.1 to Farseer 3.5?

I used the following code in Farseer 3.3.1 and it worked correctly, but in Farseer 3.5, I always get an error message in the following line: list = BayazitDecomposer.ConvexPartition(textureVertices); ...
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1answer
203 views

Saving and retrieving high-score data in XNA 4.0 [closed]

I made a game in XNA 4.0 and now I need to save the points in a database or in a file (or in something else). My goal is to store and retrieve the highest score if I choose that option in the main ...
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99 views

Improving effect performance in XNA

I'm making a 2D, top-down platformer, in which four or five layers are rendered each time the game draws. Everything is fairly performant except for the bottom layer, which is the game map. This is ...
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1answer
137 views

Does every Windows Phone 8 device have one of a fixed set of resolutions?

Does every Windows Phone have one of the following 4 resolutions? 800x480, 1280x768, 1280x720, 1920x1080 pixels Or is it possible that some devices only have a resolution of 1280x719 or 1279x720 ...
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1answer
82 views

Do I need to create an HLSL in XNA to display textures without content pipeline

I currently have a jpeg texture stored as a Color array in XNA as RGBA. I also have the vertices of a cube in OBJ format mapped to VertexPositionColor vertex buffer using the VertexBuffer and Indices ...
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2answers
93 views

Windows 7/8 imcompatibility via XNA?

I have MS Visual Studio 2010 installed on my machine (a Windows 7 Pro 64-bit), and im developing a game in XNA 4.0 with it. I can run the program just fine from the .exe file in the bin directory, and ...
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2answers
78 views

Player's camera, how to obtain smooth movement

In a 2D platformer, I have a player that can move both horizontally and vertically. I also have a camera that moves in relation to player. In every update I do this: public void RepositionCamera() ...
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676 views

Make the player run onto stairs smoothly

I have a 2D Platform game, where the player Always runs to the right, but the terrain isn't Always horizontal. Example: I implemented a bounding-box collision system that just checks for ...
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2answers
122 views

Properly rendering transparent areas of textures

I'm rendering a tree that contains branch meshes with partially transparent textures. If I render it with AlphaTestEffect and set the ReferenceAlpha to something low, I'll get this. I want to ...
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1answer
72 views

Incomplete mesh using DrawIndexedPrimitives after rotating mesh

Through help on this site I was able to draw the triangles of an unrotated, nonscaled nontransformed mesh created in Blender and exported to OBJ, accurately imported through Assimp and rendered in XNA ...
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1answer
217 views

How to properly handle top down 2D collision?

I can never seem to get this right, well polished at least. I'm creating a top down game in XNA, and collision has always been an issue for me to do properly. Detecting collision is fine, but ...
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28 views

How to implement a lightmap [duplicate]

I saw this answer and I got what he has done, but how do I create a lightmap same as this one? thanks in advance! (from what lightmap should be built from (array?) and how do I calculate a lightmap ...
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1answer
57 views

How can I use a filter to scale down my sprites?

I want the best visual result on my Windows Phone if I scale down my sprites from 1920x1080 pixel resolution to 800x480 pixel resolution. How can I use a filter to scale down my sprites? Which ...
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1answer
86 views

Render error in xna DrawPrimitive for Assimp Mesh

I am trying to render the vertices of a scene with a cube I exported as an OBJ from Blender. The 8 vertices become 24 when imported into XNA but when I render it I dont see all faces. This is not an ...
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55 views

Trying to get an object to move back and forth on collision between two collidable objects

Im trying to get a box object to hit a collidable wall on the right and when it hits it move left and hit the left wall and switch back and so on and so forth. Im having trouble with this because ...
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73 views

Rendering an Assimp Scene object in XNA without DirectX or OpenGL

Is there any site that explains how to render an imported Assimp Scene object in XNA/MonoGame using only the Frameworks available in those libraries? I realize that would be at the Vertex/Matrix level ...
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2answers
259 views

How can I support different screen resolutions without scaling the sprites?

I already tried to support different screen resolutions with scaling the sprites. But if I scale my sprites from 800x480 to 1920x1080 pixel, then the sprites look blurry. I want to use different ...
4
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2answers
452 views

How to circle a target at a constant distance

I have an AI ship that stops approaching when it gets within firing range, and starts strafing around its target. The problem is that it doesn't circle its target very well. The following code ...
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2answers
141 views

Mandelbrot generation using custom HLSL shader in XNA

So I made a Mandelbrot generator in C# and I'm learning about HLSL and custom shaders in XNA (For a college course). I was hoping to do the mandelbrot calculations on the graphics card to make them ...
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2answers
93 views

How can I read the color of a specific pixel in XNA?

I want a way to find out if, for example, the pixel at Vector2(2, 5) on the game window is color Color.Red, or some other color or set of coordinates. How can I do this?
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1answer
51 views

Revert to closest non intersecting position

First, let me start by saying: Please forgive me if this question have already been asked. I've tried to search but didn't find any solution. (It might be due to my lack of terms). I have two ...
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1answer
81 views

XNA 4.0 - Strange edges with multilight shader

I am generating a light, a depth and a normalmap to calculate the lightning at each pixel with multiple lights. On both rendertargets, i set the preferredMultiSampleCount parameter to 16 samples ...
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48 views

Scaling/Rotating triangle

I have a Triangle class and a list of triangles representing my 3D model shape. When I update the position, the rotation or the scale of my model, I also want my triangles list to be updated. I ...
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1answer
69 views

Why is the player not resting in the center of the camera?

Is it possible to create a combination of the following two cameras described in Andrew Russell's answer? XNA Platformer Sample: Supporting multiple resolutions? I want to implement a scrolling ...
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1answer
329 views

How can I create a resizeable 2D camera with parallax scrolling?

I want to create a Windows Phone jump-and-run game with parallax scrolling. The character should always be in centered in the viewport. I use the following camera so that the viewport looks on every ...
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1answer
97 views

Understanding how texCUBE works and writing cubemaps properly into a cube rendertarget

My goal is to create accurate reflections, sampled from a dynamic cubemap, for specific 3d objects (mostly lights) in XNA 4.0. To sample the cubemap I compute the 3d reflection vector in a classic ...