Publishing

XNA Game Studio Express

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    - General Audio Disfunction After about 10-15 minutes of gameplay, the audio slowly begins to become more and more distorted and fractured sounding. Both the sound FX and BGM gradually become more choppy and grainy sounding while dragging down the overall performance of the game. Any ideas Tag: Publishing
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    - Stuttering in D3D application Hello, we're experiencing stuttering in our D3D game. With stuttering, I mean that the game loop will generally take 20-30 milliseconds to complete, running smoothly at ~30 fps. But then, like once per second or so, the game loop will take like 150 milliseonds or more to complete. The stuttering happens on many different computers so I don't think it's a driver/hardware/setup problem, but rather something that we're doing in our rendering that's causing the stuttering. Many other games run fine on these computers. I've profiled parts of the code.. and usually the huge delays come from D3D Present() method or the actual rendering. Does this indicate that there's a problem with the rendering command queue being filled up and stalled or something Are there any known common mistakes one can make in D3D code that will cause the application to stutter like this, once every 20-30 frames or so It seems like there should be a simple remedy for this, since the framerate is generally quite decent - it's just that the application seems to halt occasionally. I know that a few other games have had problems like these, namely U1, UT2003, DDO.. and probably some others. Ideas Tag: Publishing
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    - Content Pipeline Hi, I haven't really used the Content Pipeline seriously yet but I've seen the official tutorials on it and understand them. Now, I'm thinking - what if I want to load a certain model/effect or anything else that the Content Pipeline supports - BUT I want to load it dynamically/at run-time, e.g. I have a certain filename that my code wants to use to load content, but I don't know it until runtime. Is there some sort of dynamic way of using what otherwise seems to be a static Content Pipeline Thanks... Tag: Publishing
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    - Blurry trail on sprite movement Hi all, I read some posts about problems with AMD processors. I am not sure my issue is caused by that because I have a different processor from the ones I read the posts about. The issue: I have a simple ball sprite. I create a pong-like game. When the ball moves it produces a blurry trail behind it. Like you have with comets in space. The faster the sprite moves, the longer and more noticable the trail. In response to this I have updated the drivers for my processor and grapics card. The result is the same. Beside the blurry trail I notice the movement is always a littlebit choppy. Not extreme, but I think it ought to be somewhat smoother than this. So no I am wondering what might be causing it. Can it be the processor or the graphics card. Or maybee it is the monitor On LCD tv's I've seen the same effect watching a soccer game. My configuration: AMD Sempron 2800+ / 1,61 Ghz / 512 MB Geforce 6800 Xtreem Philips SL120 LCD monitor Thanks, Ton Tag: Publishing
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    - Cross-platform development question Hi guys! I intend to make an application and deploy it on PC and XBOX. I want to know how do you want me to do it I see some ways: I can copy my code in other directory and change references to Compact Framework. As a result I'll have two copies of my code. It's the worst alternative, isn't it I can use only Compact Framework even on PC (if it's possible); Something else What is the best way to do it Tag: Publishing
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    - Xbox 360 Hardware limits Hi, I've been searching around for the answer to two questions but have had no luck. Firstly how much system memory can an Xbox360 XNA game actually use. I know the executable size is limited to 50Mb just like Arcade games, but with procedural techniques you could still use up lots of physical memory. Secondly how many cores are available on the xbox 360 for use to XNA developers. Are two cores powered down so we in effect only have two hardware threads or can we use all six. Judging by the fact the fan is not on 'noisy';) I assume it is the former. Many thanks! Tag: Publishing
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    - Raytracing with DirectX [original question from split thread http://forums.microsoft.com/MSDN/showpost.aspx postid=1274336&siteid=1 ] As a sidenote, if you know, could you explain to me the relationship between Shader Model 3.0/4.0 and DirectX9/10. I've read the documentation, but am a little confused. If a motherboard supports DirectX 10, does it automatically have support for SM4.0, or can it be DX10 and still only have support for SM3.0 Actually, there is a case where some new motherboards support DirectX 10. The Intel, DG965WH says in its manual: http://www.intel.com/design/motherbd/wh/wh_documentation.htm that it does support DirectX 10 through the onboard video chipset X3000. There are conflicting reports on the internet and I'm wondering if DirectX 10 support explicity implies Shader Model 4.0 support, even if its added afterwards with a driver update. Put simply, will the Intel DG965WH, as described in the technical support document, Support DirectX 10 as well as SM 4.0 Tag: Publishing
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    - XNA Course at my local community college I just got a flyer in the mail about a non-credit course my local college (Miami Dade College) is offering. Its bout 4 saturdays, 3 hours each. $339. Game Development: XNA Game Studio Express - $339.00 Pre Req - N/A XNA is targeted at students and hobbyists for game development. XNA Game Studio lets developers target both Windows and Xbox 360. You will learn:Visual Studio C# Programming Basics, Network Play basics, input control basics, and Sound Basics;2D Sprites versus 3D game creation, using 3rd Party gaming engines; The XNA Framework, a set of managed code development libraries that make it possible for game developers to be more productive when creating games for Windows and the Xbox 360;The XNA Framework Content Pipeline, which is a set of tools that allow developers to more easily incorporate 3D content into their games. i think i know the professor that would be teaching it, and hes really good at gamedev. id probably take the course, but the army has me way too busy this Spring semester to do this. hopefully its offered over the summer. looks interesting/fun! Tag: Publishing
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    - SFS 360 DEMO Download !!! Download the ALPHA Test Demo for Simple Flight Simulator 360 ... http://games.archor.com ... Click on "XBOX 360 Games" ... Screenshots available on the Site ... - You can also Download it from the 360 Projects Section at .... http://www.gameprojects.com - Fly Your Helicopter around the Big City ! Notes: - The Project is still in the Very Early Alpha Testing Phase and has a long way to go before it is complete. - Source Code and Resources are included. - Just Build and Deploy to the 360 via XNA GSE. - Use the XBOX 360 Controller Left and Right ThumbSticks to Move and Spin. - Press the "Back" Button to End. Tag: Publishing
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    - HLSL shader(s) using CPU instead of GPU I am using D3DXCreateEffect to create a vertex and pixel shader HLSL effect. The process I use to create and activate the effect is the same every time, I am only changing the pixel shader code, and here's what happens: My program renders about 50 fps generally with CPU usage around 4% and when I do a trivial RGB to BGR color swap with the following shader, this usage remains: PS_OUTPUT RenderScenePS( VS_OUTPUT In ) { PS_OUTPUT Output; // Lookup mesh texture and modulate it with diffuse Output.RGBColor = tex2D(MeshTextureSampler, In.TextureUV) * In.Diffuse; float r = Output.RGBColor.r; Output.RGBColor.r = Output.RGBColor.b; Output.RGBColor.b = r; return Output; } So with this shader the rendering does a dynamic RGB to BGR swap entirely on the GPU I figure, because the CPU usage is still around only 4%. Now I just change the shader, nothing else in any of the code anywhere, to this: PS_OUTPUT RenderScenePS( VS_OUTPUT In ) { PS_OUTPUT Output; // Lookup mesh texture and modulate it with diffuse Output.RGBColor = tex2D(MeshTextureSampler, In.TextureUV) * In.Diffuse; // Demo: 4-bit grayscale float avg = (Output.RGBColor.r + Output.RGBColor.g + Output.RGBColor.b) / 3.0f; avg = round(avg*16.0f) / 16.0f; Output.RGBColor.r = avg; Output.RGBColor.g = avg; Output.RGBColor.b = avg; return Output; } To me this seems simple enough but for reason my CPU usage goes way up when this shader is running (and the system lags like crazy). The rendering shows the grayscale image, so it is working, but the CPU usage is off the charts. I thought shaders were supposed to execute entirely on the GPU so I'm confused how it's possible that my CPU usage is going up unless something needs to be emulated in software. In my D3DXCreateEffect call I have the D3DXSHADER_NO_PRESHADER flag, (along with the not cloneable flag) which seems to be the only CPU-related flag available. My video card should be more than capable of such a shader even though it's not an ultra-powerful card (NVIDIA GeForceFX 5200). What would cause a pixel shader to use the CPU power Tag: Publishing
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    - XNA sample code problem ? Hi all, i finded xna "XNA Onscreen Keyboard Component" sample in internet( http://www.xnaresources.com/pages.asp pageid=27 ). What does the iFontAsciiStart and iFontAsciiEnd mean in function WriteText () Please somebody help. Below is the function coding. public void WriteText(SpriteBatch spriteBatch, string sTextOut, int x, int y, Color colorTint) { // Very simple text output method. Uses a mono-spaced font to keep things easy int iFontX = 0; int iFontY = 0; int iFontHeight = 30; int iFontWidth = 19; int iFontAsciiStart = 32; int iFontAsciiEnd = 126; int iOutChar; for (int i = 0; i < sTextOut.Length; i++) { iOutChar = (int)sTextOut ; if ((iOutChar >= iFontAsciiStart) & (iOutChar <= iFontAsciiEnd)) { spriteBatch.Draw( t2dFont, new Rectangle( x + (iFontWidth * i), y, iFontWidth-1, iFontHeight), new Rectangle( iFontX + ((iOutChar - iFontAsciiStart) * iFontWidth), iFontY, iFontWidth-1, iFontHeight), colorTint ); } } } Best Regrads, Tag: Publishing
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    - cloud of dust like in battlefield 2 : mc does anybody know how the developers from battlefield 2 : modern combat did the cloud of dust effects did you know what i mean Tag: Publishing
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    - world coordinates 2d tile map hello all.. i have a little problem.. i usw a 40*40 tile map. visible is a area of 12*15. everything is working very well.. also the scrolling... how can i calculate the world coordinate of the map... i do it this way.... else if (_Spieler.Aktiv.ScreenPos.X < 150) { // Der Panzer wurde weiter nach unten rechts (Drehwinkel im 1. oder 2. Quadranten if ((_Drehwinkel >= ( MathHelper .Pi)) && (_Drehwinkel < ( MathHelper .Pi * 2))) { // Map scrollen _Map.MapScrollen(_Spieler, _Map); } else { _Spieler.UpdateVorwarts(_Spieler, _SpeedVor); } } this makes the player moving or the map scrolling... if the map is scrolling i substract the new x value of the world position worldpos.X -= math.abs( _Spieler.Aktiv.SpeedVor * ( float ) Math .Sin((( MathHelper .Pi / 2) - _Spieler.Aktiv.Drehwinkel))); this is working.. but i get a different value if i am at the end of the map. the value depends on the angle of rotation !! the longer the way to the end of the map is the bigger is the difference... can anybody give me a hint how to calculate the world position on a scrollable tilemap` i need the exact position of the map because i want to draw world coordinate objects on it... please help me.. if you want more code. i can post it here Tag: Publishing
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    - A Question (Creators Club) I was wondering this. Since I have a cable connection (no router) directly to my computer, how would I connect my Xbox to my computer so I can use the Creators Club Right now I just disconnect the Ethernet cable from the back of the cable modem and connect the Xbox 360 Ethernet cable to get Live on my 360. Tag: Publishing
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    - problems with sprites hello I am trying to make a weapon system on my first xna game. I was wondering if anyone could help me with a problem I have. Im using the XNA "How to" examples to try and render a simple texture as a sprite. I managed to use the first "how to render a sprite" example to render a sprite. the problem is, but i want to be able to position my sprite where I want so I used the second "How to" example. so I read through the tutorial and got the code in my game but when I run, I get an error saying my texture is being called as a texture2D instead of an AnimatedTexture(the code is made for an animated texture) so i guesss my texture is not animated.. but I dont want an animated texture! I just want a simple one and I just cant work out how to do it.. I found this other tutorial that seemed good but included this weird camera that can be rotated around the sprite... the camera code was buggy and didnt let my code run.. all I want is to know how to render a sprite at a given location and be able to change the variable to move it around. So Iv been fiddling around aimless, not knowing what Im doing trying to get this sprite to appear. Once I get this sprite rendered I think I might be able to work out a way to get it moving like a rocket or something. anyway this is my code , can somebody please help me, or maybe point me to a good tutorial. at this point in time Im getting an error saying Error 1 'Microsoft.Xna.Framework.Vector3' does not contain a definition for 'ViewMatrix' C:\Documents and Settings\something \My Documents\Visual Studio 2005\Projects\WindowsGame3\WindowsGame3\Game1.cs 133 45 Spaceshooter this is my code (i know its very messy and some parts are completely useless but hey Im new and Im experimenting with anything I can find, also iv commented a lot of stuff out because I experiment but I dont want to loose the original working partts of the code so I comment them out, add the new code and see how it goes). If someone can help me i will be extremely thankful! #region Using Statements using System; using System.Collections.Generic; using Microsoft.Xna.Framework; using Microsoft.Xna.Framework.Audio; using Microsoft.Xna.Framework.Content; using Microsoft.Xna.Framework.Graphics; using Microsoft.Xna.Framework.Input; using Microsoft.Xna.Framework.Storage; #endregion public class Game1 : Microsoft.Xna.Framework. Game { GraphicsDeviceManager graphics; ContentManager content; KeyboardState oldState; Matrix projectionMatrix; SpriteBatch batch; Texture2D explosion; Vector2 explosionPos; public Game1() { graphics = new GraphicsDeviceManager ( this ); content = new ContentManager (Services); oldState = Keyboard .GetState(); } protected override void Initialize() { base .Initialize(); } // Specify the 3D model to draw. Model myModel; // The aspect ratio determines how to scale 3d to 2d projection. float aspectRatio; private Texture2D Explosion; private SpriteBatch ForegroundBatch; private Rectangle TitleSafe; protected override void LoadGraphicsContent( bool loadAllContent) { if (loadAllContent) { myModel = content.Load< Model >( "Content\\Models\\p1_wedge" ); ForegroundBatch = new SpriteBatch (graphics.GraphicsDevice); //////////////// Explosion = content.Load< Texture2D >( "Sprite1" ); ///////////////////// } aspectRatio = graphics.GraphicsDevice.Viewport.Width / graphics.GraphicsDevice.Viewport.Height; graphics.GraphicsDevice.RenderState.DepthBufferEnable = true ; graphics.GraphicsDevice.RenderState.CullMode = CullMode .None; TitleSafe = GetTitleSafeArea(.8f); //////////////////////////////// } protected override void UnloadGraphicsContent( bool unloadAllContent) { if (unloadAllContent == true ) { content.Unload(); } } // Set the velocity of the model, applied each frame to the model's position. Vector3 modelVelocity = Vector3 .Zero; protected override void Update( GameTime gameTime) { if ( GamePad .GetState( PlayerIndex .One).Buttons.Back == ButtonState .Pressed) this .Exit(); // Get some input. UpdateInput(); // Add velocity to the current position. modelPosition += modelVelocity; base .Update(gameTime); // Bleed off velocity over time. modelVelocity *= 0.95f; UpdateInput(); // Create a total bounding sphere for the mesh BoundingSphere totalbounds = new BoundingSphere (); foreach ( ModelMesh mesh in myModel.Meshes) { totalbounds = BoundingSphere .CreateMerged(totalbounds, mesh.BoundingSphere); } Vector2 explosionpos; // Project the center of the 3D object to the screen, and center the // sprite there Vector3 center = modelPosition; explosionpos.X = center.X; explosionpos.Y = center.Y; // Create a bounding box from the bounding sphere, and find the corner // that is farthest away from the center using Project BoundingBox extents = BoundingBox .CreateFromSphere(totalbounds); float maxdistance = 0; float distance; Vector3 screencorner; foreach ( Vector3 corner in extents.GetCorners()) { screencorner = graphics.GraphicsDevice.Viewport.Project(corner, projectionMatrix, cameraPosition.ViewMatrix, Matrix .Identity); distance = Vector3 .Distance(screencorner, center); if (distance > maxdistance) maxdistance = distance; } base .Update(gameTime); } protected Rectangle GetTitleSafeArea( float percent) { Rectangle retval = new Rectangle (graphics.GraphicsDevice.Viewport.X, graphics.GraphicsDevice.Viewport.Y, graphics.GraphicsDevice.Viewport.Width, graphics.GraphicsDevice.Viewport.Height); #if XBOX // Find Title Safe area of Xbox 360. float border = (1 - percent) / 2; retval.X = (int)(border * retval.Width); retval.Y = (int)(border * retval.Height); retval.Width = (int)(percent * retval.Width); retval.Height = (int)(percent * retval.Height); return retval; #else return retval; #endif } protected void UpdateInput() { KeyboardState newState = Keyboard .GetState(); Vector3 modelVelocityAdd = Vector3 .Zero; modelVelocityAdd.X = -( float ) Math .Sin(modelRotation); modelVelocityAdd.Z = -( float ) Math .Cos(modelRotation); if (newState.IsKeyDown( Keys .A)) { modelRotation += 0.1f; //modelRotationZ = 0.1f; modelRotationX = 0.1f; } else { modelRotationX = 0f; } // Otherwise, check to see whether it was down before. // (and therefore just released) if (newState.IsKeyDown( Keys .D)) { modelRotation -= 0.1f; //modelRotationZ = -0.1f; modelRotationZ = 0.1f; } else { modelRotationZ = 0f; } if (newState.IsKeyDown( Keys .W)) { modelVelocity += modelVelocityAdd; } // Otherwise, check to see whether it was down before. // (and therefore just released) else if (oldState.IsKeyDown( Keys .S)) { modelPosition = Vector3 .Zero; modelVelocity = Vector3 .Zero; modelRotation = 0f; } if (newState.IsKeyDown( Keys .Space)) { } oldState = newState; } // Set the position of the model in world space, and set the rotation. //Vector3 modelPosition = Vector3.Zero; Vector3 modelPosition = Vector3 .Zero; //float modelRotation = 0.0f; float modelRotation = 0.0f; float cameraRotation = 90.0f; ////////////////////////////////////////////////////////////// float modelRotationX = 0.0f; float modelRotationZ = 0.0f; // Set the position of the Camera in world space, for our view matrix. Vector3 cameraPosition = new Vector3 (0.0f, 0.0f, -18000.0f); protected override void Draw( GameTime gameTime) { graphics.GraphicsDevice.Clear( Color .CornflowerBlue); // Copy any parent transforms. Matrix [] transforms = new Matrix [myModel.Bones.Count]; myModel.CopyAbsoluteBoneTransformsTo(transforms); graphics.GraphicsDevice.Clear( Color .CornflowerBlue); base .Draw(gameTime); // Draw the model. A model can have multiple meshes, so loop. foreach ( ModelMesh mesh in myModel.Meshes) { // This is where the mesh orientation is set, as well as our camera and projection. foreach ( BasicEffect effect in mesh.Effects) { effect.EnableDefaultLighting(); effect.World = transforms[mesh.ParentBone.Index] * Matrix .CreateRotationY(modelRotation) * Matrix .CreateRotationX(modelRotationX) * Matrix .CreateRotationZ(modelRotationZ) * Matrix .CreateTranslation(modelPosition); effect.View = Matrix .CreateLookAt(cameraPosition, Vector3 .Zero, Vector3 .Up); effect.Projection = Matrix .CreatePerspectiveFieldOfView( MathHelper .PiOver4, aspectRatio, 1.0f, 100000.0f); effect.View = cameraPosition.ViewMatrix; effect.Projection = projectionMatrix; effect.View = Matrix .CreateRotationX(cameraRotation) * Matrix .CreateTranslation(cameraPosition); //////////////////////////////////////////////////////// //viewMatrix = viewMatrix = Matrix.CreateLookAt(new Vector3(0, 0, 30), new Vector3(0, 0, 0), new Vector3(0, 1, 0)); //viewMatrix = Matrix.CreateLookAt(new Vector3(0, -2, 5), new Vector3(2, 1, 0), new Vector3(0, 0, 1)); //effect.View = Matrix.CreatePerspectiveFieldOfView(MathHelper.PiOver4, aspectRatio, 1.0f, 10000.0f);//this.Window.ClientBounds.Width / this.Window.ClientBounds.Height, 0.2f, 500.0f); //////////////////////////////////sprite draw method//////////////////////////// //ForegroundBatch.Begin(); //Vector2 pos = new Vector2(TitleSafe.Left, TitleSafe.Top); // ForegroundBatch.Draw(Explosion, pos, Color.White); //ForegroundBatch.End(); // base.Draw(gameTime); } // Draw the mesh, using the effects set above. mesh.Draw(); } batch.Begin( SpriteBlendMode .AlphaBlend, SpriteSortMode .Deferred, SaveStateMode .SaveState); ForegroundBatch.Draw(explosion, explosionPos, Color .White); ForegroundBatch.End(); //explosion.DrawFrame(batch, explosionpos); batch.End(); base .Draw(gameTime); } } public class AnimatedTexture { private int framecount; private Texture2D myTexture; private float TimePerFrame; private int Frame; private float TotalElapsed; private bool Paused; public float Rotation, Scale, Depth; public Vector2 Origin; public AnimatedTexture( Vector2 Origin, float Rotation, float Scale, float Depth) { this .Origin = Origin; this .Rotation = Rotation; this .Scale = Scale; this .Depth = Depth; } public void Load( GraphicsDevice device, ContentManager content, string asset, int FrameCount, int FramesPerSec) { framecount = FrameCount; myTexture = content.Load< Texture2D >(asset); TimePerFrame = ( float )1 / FramesPerSec; Frame = 0; TotalElapsed = 0; Paused = false ; } // class AnimatedTexture public void UpdateFrame( float elapsed) { if (Paused) return ; TotalElapsed += elapsed; if (TotalElapsed > TimePerFrame) { Frame++; // Keep the Frame between 0 and the total frames, minus one. Frame = Frame % framecount; TotalElapsed -= TimePerFrame; } } // class AnimatedTexture public void DrawFrame( SpriteBatch Batch, Vector2 screenpos) { DrawFrame(Batch, Frame, screenpos); } public void DrawFrame( SpriteBatch Batch, int Frame, Vector2 screenpos) { int FrameWidth = myTexture.Width / framecount; Rectangle sourcerect = new Rectangle (FrameWidth * Frame, 0, FrameWidth, myTexture.Height); Batch.Draw(myTexture, screenpos, sourcerect, Color .White, Rotation, Origin, Scale, SpriteEffects .None, Depth); } public bool IsPaused { get { return Paused; } } public void Reset() { Frame = 0; TotalElapsed = 0f; } public void Stop() { Pause(); Reset(); } public void Play() { Paused = false ; } public void Pause() { Paused = true ; } } Tag: Publishing
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    - How to get Angle from Thumbstick? Is there a way to get the angle from the thumbsticks of a XBOX360 controller If up return 0, right 90, down 180, left 270. this is how I crudely did it: if (currentGamePadState.ThumbSticks.Right.X != 0 || currentGamePadState.ThumbSticks.Right.Y != 0) { if (projectileTime == 0) { Vector2 vel = new Vector2(400, 0); float rad = 0; if (currentGamePadState.ThumbSticks.Right.Y == 0) { if (currentGamePadState.ThumbSticks.Right.X > 0) { vel = new Vector2(400, 0); } else { vel = new Vector2(-400, 0); } } else if (currentGamePadState.ThumbSticks.Right.X == 0) { if (currentGamePadState.ThumbSticks.Right.Y > 0) { vel = new Vector2(0, -400); } else { vel = new Vector2(0, 400); } } else { if (currentGamePadState.ThumbSticks.Right.X > 0) { rad = (float)Math.Atan((double)currentGamePadState.ThumbSticks.Right.Y / currentGamePadState.ThumbSticks.Right.X); vel = new Vector2((float)Math.Cos(rad) * 400, (float)Math.Sin(rad) * -400); } else { rad = (float)Math.Atan((double)currentGamePadState.ThumbSticks.Right.Y / currentGamePadState.ThumbSticks.Right.X); vel = new Vector2((float)Math.Cos(rad) * -400, (float)Math.Sin(rad) * 400); } } ProjectileManager.AddProjectile(Game1.Players[0].playerSprite.Position, vel, Color.Red); projectileTime = 200; } Tag: Publishing
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    - New XNA Game: Warriors of the Shining Star. I just wanted to see what people thought of the game I��m working on with XNA. I��ve been posting updates to my blog if you are interested. Right now I only have movies on the site; hopefully I��ll get a demo up in the next couple of weeks. http://www.stressedgamer.blogspot.com/ -tom Tag: Publishing
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    - loading textures on array Hi i am making a simple pool game and have my balls in an array (each ball runs through a class to set the properties. i have a Texture2D property to set the texture so i can set the white ball colour and yellow and red ball colour. however i have set up the array and try to draw but it will not accept the array property as a texture it keeps saying it is of null value even though i have set each of the balls here is the code below as you may understand a little more. //ball class for each ball public class balls { public Texture2D tex; public float x; public float y; public Vector2 v = new Vector2 (); public float r = 12.5f; public float m = 10; } //array of balls balls [] pBalls = new balls [] { new balls (), new balls (), new balls (), new balls (), new balls (), new balls (), new balls (), new balls (), new balls (), new balls (), new balls (), new balls (), new balls (), new balls (), new balls (), new balls (), new balls ()}; //setting the ball sprite batch and texture for a red ball sBalls = new SpriteBatch ( this .graphics.GraphicsDevice); ContentManager BallsLoader = new ContentManager (Services); tBalls = BallsLoader.Load< Texture2D >( "RedAlpha" ) as Texture2D ; pBalls[0].tex = tWBall; for ( int i = 1; i < 16; i++) { pBalls[ i].tex = tBalls;//space there for forum use only } tWBall is white ball same code as above but whit texture and different variable names where needed. //sprite batch for balls b.tex is the texture that is set but this is where the error keeps showing foreach ( balls b in pBalls) { sBalls.Begin( SpriteBlendMode .AlphaBlend); sBalls.Draw(b.tex, new Rectangle (( int )b.x, ( int )b.y, 25, 25), Color .White); sBalls.End(); }i hope the code is clear enough for you all. if you have any questions or would like the full cs code file let me know and i will send it to you. Regards Mark Tag: Publishing
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    - XNA's use of Collections XNA uses Collections for a lot of things: ModelMeshCollection, ModelEffectCollection, EffectPassCollection, ModelMeshPartCollection, etc. which results in a lot of foreach iteration in code. I recently discovered the CLR Profiler and started poking around. It appears that using foreach on these Collections results in creation of SZArrayHelper and Enumerator helper objects. Most other systems are doing pretty well to avoid any constant object "leakage", and I'd rather keep it that way if possible (I come from the "No Dynamic Allocations at Runtime" school of console development). I'm still pretty new to C#, so what I'm wondering is if there are there ways to avoid this constant pressure on the GC -beyond hand unrolling the loops (in turn binding code to data), or rolling my own model classes, etc.. Tag: Publishing
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    - The future of 3D grahics programming with managed code (Microsoft technology) Hi! I would like to ask some information about the future of 3D graphics programming with the managed code. Yesterday, I came across an article where I read that Microsoft(MS) will stop the developoment of DirectX with the managed code, with the managed code I mean C#, Whidbey C++ and VB. The question I have in my mind is : "What's next ". I have been developing numerical simulators during the last two years. My preffered language is (Managed)C++. The reason I chose Managed C++ is that - I thought that - I can use the MS technology in other parts of the developement, in addition I develop a code which is consistent with the C++ norms, altough Whidbey C++ is violing the traditional C++ syntax - I would not predict this two years ago when I started with my project. I started to develop the "visual" part with C# DirectX. Now I am coding "it" with Managed C++ and I intend to finish it during the summer. The graphical presentation of results and interactive data entrance are the essential parts of my program. If MS stops the development of the DirectX with the managed code, the code I develop will have a limited time of existence because the graphics is streed by DirectX, thus interaction between the graphics and the main code will come to stop. You see as a developer you have to make a decision at the end of the day whether you are willing to put more efforts to maintain the MS' technology or you're going to choose a "less" painless alternative. That is, I am considering to choose a platform independent solution with OpenGL because I can spend less effort to maintain my code in stead of following MS' technology. However, I do not want to completely cut the MS technology either. That is the dilemma I have now. My information related to DirectX10 or "longhorn" is very limited right now so I do not know what kind of programming language they are using there. I appreciate for your recommendations and suggestions for the future development of my code. Regards, M. Tag: Publishing
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    - Anyone to test an Octtree based space game? I have a good (I think) version of an Octtree based scene management system. It needs more testing. I have built an Outerspace Game for testing......it needs other things built into it. Right now, there's a space station and 150 ateroid fields and a 3D starfield that you can fly around in. It needs spacecraft, other interesting stuff, like a mother ship. I would like to give the "Loose" Octtree and better test. Here's how it works: The entire space (within the game) is a cube (big sector) that is then divided up into 8 cubes (nodes, sectors) that is the divided into 8 cubes....and so on until a manageable size. Models and Game components can be added to the octree. It finds what node (according to position) that the object goes into. This is the scene management part. It seems to work really well. It culls out the nodes(sectors,cubes) that fail the visibility test. NOW, the "LOOSE" part is that if an object's bounding sphere extends beyond the boundry of the node (cube) that it is assigned to based on it's position, then the clipping Bounding Box that determines visibility (based on the viewing frustum) is expanded to encompass the object (and all other objects in the node based on position). The original bounding box used to test which nodes (sector,etc..) it fits in is not modified. If an object is removed, or it's position changes such that it no longer belongs in the node it is in, then the Frustm cull bounding box for that node can shrink if it is one of the offenders that caused it to grow..... So......A Huge spaceship (MOTHER SHIP) while traveling should cause the view bounding box to grow, but the actual bounding volume does not. Once the Huge ship's position is outside the bounding volume of the node, it will land in another node and it will grow while the old node shrinks back. Long, story, but..............................I'll put the files for download on FileFront, no codeplex project yet :(, if someone wants to test it out.....maybe even make a cool game using it. Tag: Publishing
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    - MDX 9.0 under Vista Hi all, simple question that I can��t seem to find an answer for: Will MDX 9.0 run under Vista Not bothered if it comes pre installed, just if runs OK Thanks Tag: Publishing
  - 7
    - .xnb files are huge Hi! Our 2D game is getting huge because of the non-compressed .xnb files all our graphic are stored as by XNA. A single background image in 1280x720 pixels is using 3,5 MB ! What can you do to get file sizes for graphics down Tag: Publishing
  - 8
    - Is my normal code wrong? I've used it on a few models and all the time the results are dire. even on a flat patch. i know its the normal code cos if I manually input good normals it looks fine. Can you see any way i can improve this or better yet, a link to a xna demo with normal generation code And sorry for so many threads, having too much fun with xna. public void CalculateNormals() { float [] Face_NX = new float [ this .Triangles]; float [] Face_NY = new float [ this .Triangles]; float [] Face_NZ = new float [ this .Triangles]; int [] Vertex_ConnectedTris = new int [ this .Vertices]; int [,] Vertex_TriList = new int [ this .Vertices, 128]; int TriCount = this .Triangles; for ( int Loop_Tris = 0; Loop_Tris < TriCount; Loop_Tris++) { int Vertex_0, Vertex_1, Vertex_2; Vertex_0 = TriangleVertex(Loop_Tris, 0); Vertex_1 = TriangleVertex(Loop_Tris, 1); Vertex_2 = TriangleVertex(Loop_Tris, 2); int ConnectedTris = 0; ConnectedTris = Vertex_ConnectedTris[Vertex_0]; Vertex_TriList[Vertex_0, ConnectedTris] = Loop_Tris; Vertex_ConnectedTris[Vertex_0] = ConnectedTris + 1; ConnectedTris = Vertex_ConnectedTris[Vertex_1]; Vertex_TriList[Vertex_1, ConnectedTris] = Loop_Tris; Vertex_ConnectedTris[Vertex_1] = ConnectedTris + 1; ConnectedTris = Vertex_ConnectedTris[Vertex_2]; Vertex_TriList[Vertex_2, ConnectedTris] = Loop_Tris; Vertex_ConnectedTris[Vertex_2] = ConnectedTris + 1; float Ax = VertexX(Vertex_0); float Ay = VertexY(Vertex_0); float Az = VertexZ(Vertex_0); float Bx = VertexX(Vertex_1); float By = VertexY(Vertex_1); float Bz = VertexZ(Vertex_1); float Cx = VertexX(Vertex_2); float Cy = VertexY(Vertex_2); float Cz = VertexZ(Vertex_2); float Px = Ax - Bx; float Py = Ay - By; float Pz = Az - Bz; float Qx = Bx - Cx; float Qy = By - Cy; float Qz = Bz - Cz; float Nx = Py * Qz - Pz * Qy; float Ny = Pz * Qx - Px * Qz; float Nz = Px * Qy - Py * Qx; float mag = ( float ) Math .Sqrt(Nx * Nx + Ny * Ny + Nz * Nz); Nx = Nx / mag; Ny = Ny / mag; Nz = Nz / mag; Face_NX[Loop_Tris] = Nx; Face_NY[Loop_Tris] = Ny; Face_NZ[Loop_Tris] = Nz; } int VertCount = this .Vertices; for ( int LOOP_Vertices = 0; LOOP_Vertices < VertCount; LOOP_Vertices++) { float Nx = 0; float Ny = 0; float Nz = 0; int Polys = Vertex_ConnectedTris[LOOP_Vertices]; for ( int LOOP_Polys = 0; LOOP_Polys < Polys; LOOP_Polys++) { int ThisPoly = Vertex_TriList[LOOP_Vertices, LOOP_Polys]; Nx = Nx + Face_NX[ThisPoly]; Ny = Ny + Face_NY[ThisPoly]; Nz = Nz + Face_NZ[ThisPoly]; } float Nl = ( float ) Math .Sqrt(Nx * Nx + Ny * Ny + Nz * Nz); if (Nl < 0.1) Nl = 1; Nx = Nx / Nl; Ny = Ny / Nl; Nz = Nz / Nl; Debug .WriteLine( "X:" + Nx + " Y:" + Ny + " Nz:" + Nz); VertexList[LOOP_Vertices].Normal = new Vector3 (Nx, Ny, Nz); } } Tag: Publishing
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    - Meshes, Material and Light Hi guys, i'm currently trying to get started with my first serious approach in getting something to work in XNA ;) It will be a ball game and it is called xMinton for now. Many things are done, setting up many classes and the usual stuff. While i was working there were more and more questions coming up. I was able to solve some of them on my own, some of them are those i want to ask you genius folks now. Tag: Publishing
  - 10
    - Could C# be the future of gaming? Since XNA is using C#, and is is a more intuitive language than C++, is it possible that in the future that C# will dominate, espessially in AAA titles. Could XNA be ushering a new way of programming in the main stream Tag: Publishing
  - 11
    - xna with managed directinput i'm making a game using the xna framework, the input class in the xna framework is good but i want to support old gamepad and joystick and i 'm using the directinput from the managed directx 9.0c, but when i use this line of code game_control.SetCooperativeLevel(this, CooperativeLevelFlags.NonExclusive | CooperativeLevelFlags.Background); the compiler gave me this two error codes: a) The best overloaded method match for Microsoft.DirectX.DirectInput.Device.SetCooperativeLevel(System.Windows.Forms.Control, Microsoft.DirectX.DirectInput.CooperativeLevelFlags)' has some invalid arguments b) Argument '1': cannot convert from 'prueba22.Game1' to 'System.Windows.Forms.Control' i have tried the code for the gamepad in visual c# express without using the xna framework and there is no error codes. my question here is if the xna framework can not work if i use the directinput from directx 9 or there is another way to do that, i need to use old style gamepad because the xna framework only support the xbox 360 gamepad controller and most users over the world already have one gamepad. if somebody can help me i really thank you in advance. Tag: Publishing
  - 12
    - Texture3D Coordinate Order This should be a quick question (though a quick search of the internet didn't find anything, and I don't have time right now to write a quick test): what order are texels of a volume texture in when returned from Texture3D.GetData In other words, if I were to write a loop to read texture coordinates, would I write "for x, for y, for z" or "for z, for y, for x" (or uvw would probably be more correct). Tag: Publishing
  - 13
    - Parameters for content processor Is there currently any way of providing parameters to the content pipeline For instance, if I had a huge terrain that I want to convert into blocks within the pipeline, it would be nice to set a parameter for the block size within the IDE's properties panel for the asset, alongside the ContentImporter/ContentProcessor settings. If not I guess I'm going to have to create an XML file to describe the terrain, and import that instead. Not half as nice. Tag: Publishing
  - 14
    - error loading model in xna framework hello i have a problem loading a model that i have made it in 3d studio max 9, the model is a human all with texture, but when i put it in the content pipeline and try to run or compile the program the compiler send me this error Error 2 BasicMaterial has a texture, but geometry does not contain texture coordinates. E:\my games\prueba01\prueba01\enzo.X prueba01 What i need to do to correct this how do i put texture to a geometry what does it mean Tag: Publishing
  - 15
    - VerifyCanDraw throwing a NullReferenceException Hello, Occassionally a function called VerifyCanDraw is throwing a NullReferenceException from within DrawIndexedPrimitives - so I'm not getting any information about what's going wrong. The arguments look fine, and I've stepped through the program and found that the vertex and index buffers passed in look fine. The DirectX Debug runtime on highest output level isn't printing anything out of the ordinary. The problem itself is very capricious - for some deterministic applications using my library, it may or may not get thrown even if there are no changes to the code. For one other I can get it to occur or not occur consistently by constructing or not constructing an object from another library (FarSeer, specifically) that is never referenced again in the program and has nothing to do with graphics. So I really have no clue what's happening. I would be glad to provide code that consistantly produces the error, it's just sort of big and I'd rather see if anyone (perhaps someone who knows about VerifyCanDraw ) has any ideas first. EDIT: Another weird observation...I just built a project in both debug and release mode. The debug version runs fine if I hit F5 in vcse to run it, and the release version runs fine period. If I run it in vcse with a breakpoint set, I get the VerifyCanDraw exception. Finally, if I go in to my bin folder and run the debug version, it has yet another exception that occurs later than VerifyCanDraw normally would. This has happened consistently, over several trials and a few rebuilds for each. This is crazy!! Now I'm really curious what's up.... Tag: Publishing
  - 16
    - Logitech G25 DirectInput Does anybody knows about this problem My new Logitech G25 not work with DirectX SDK directinput samples. It says "no force feedback device found"... Please help ! Tag: Publishing

Dr.Pepper

I've noticed that when try the install for a game on any computer but my own, it doesn't work. I had all 3 of the files that it produces on the floppy, but it still didn't work. All of the other computers had the 2.0 service update, but it still didn't work. Do they have to have XNA to

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Re: Publishing

Fluxtah

They need to have the XNA Framework redistributable installed http://www.microsoft.com/downloads/details.aspx FamilyId=2E136A1F-F187-478C-9DA5-AAEB0904782B&displaylang=en

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Re: Publishing

Dr.Pepper

Ok, I tried that but it still won't work.

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Re: Publishing

dczraptor

Make sure the end users are updating their comptuers with the latest DirectX libraries (december 2006). Chances are, they aren't, so run the file below to double check and install. Unless you have a sub-par graphics card, this should solve the problem.

http://www.microsoft.com/downloads/details.aspx displaylang=en&FamilyID=2da43d38-db71-4c1b-bc6a-9b6652cd92a3

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