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Game Technologies: DirectX 101

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    - Loading Content After Device Reset The bullets are actually a simple quad with a texture that I produce in the game. I did fix the problem there (by changing the vertex order). I'll try recreating the model that is giving me problems and see if somehow it was merely exported incorrectly out of Maya. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Music? http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=1292165&SiteID=1 Might be helpful. It's a stopgap measure until music is officially supported in XNA. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - C# directinput Forcefeedback error Hi there, that problem is due to a bug in the Microsoft DirectInput Samples. I posted an entry in my blog on how to workaround it. You can check it out here: http://graphicdna.blogspot.com/2007/01/managed-directinput-samples-bugs.html Hope it helps. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Glow and blur effects? The same sort of postprocessing effects people use in 3D will work just fine over the top of a 2D scene as well. That's the great thing about postprocessing - it doesn't care how the scene was rendered, just give it an image and it will do its stuff. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Reading embedded files I thought the ResourceManager was for reading from .resx files That's a different kind of embedding to if you select "Embedded Resource" as the Build Action in the VS properties. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Problem with running XNA-Applications You might want to add some logging at strategic points in your application so you can see where things are going wrong. Once you figure out where it's deciding to exit, you should have a better idea of why. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Starting work on my GUI system andyfraser wrote: Can I suggest that high on the list of priorities for a UI would be that it is skinnable. I think it is really important that the UI match the style of the game and it also means that all our XNA games don't look the same Agreed! This is a priority IMO and probably not tough to take into account. Coming up with layout requirements for allowing skins shouldn't be difficult. edit: this article might be something to take into consideration. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Spare 360 power supply to help with XNA development $90.... thats insane... is it made of gold Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - The Quest to understand BasicEffect continues... Hello all, I'm starting to get to grips with the structure of things, but through all the code I've looked at, all the tutorials etc etc, I'm still not clear on a few things. I've searched these forums pretty exhaustively, but I'll issue the obligatory pre-emptive apology if I've missed something obvious. Now, to start with, I believe I'm correct in saying that camera position must be set via the view and projection matrices of an effect. Let's take the case of BasicEffect. You get yourself a new BasicEffect, and then you set some nice view/projection matrices. Stick some variables in there and update it and you've got yourself a moving camera, more or less. So far, so good. Let's say you have a couple of different classes for your own primitive obects. A cube and a sphere. Standard stuff, you might have a class for the objects themselves, and a manager class for handling multiples of these objects. Now, each of these manager classes (CubeManager and SphereManager) have been given their own Draw() methods, which render their cubes and spheres from a list. All very standard. What I find slightly puzzling is what exactly is the correct use of BasicEffect here. Now, my camera information is stored in the view and projection matrices of my basiceffect. Does this mean you must always use this basiceffect instance in all your draw loops of your various objects How would you accomplish different graphical effects for different objects Using different techniques in different object draw loops Secondly, although both are possible, do people generally do the effectpasses at the CubeManager/SphereManager end, and just have a simple CubeManager.Draw(cubeList) call in your main game draw loop Or do you have an effectpass loop in your main game class Draw() method I suppose it doesn't really matter... Finally, onto custom effects, I've seen examples of code where there's a number of different .fx files in use. I'm steering clear of HLSL until I've nailed the basics, but I'm curious as to what is normally done. Multiple .fx files, one each for different objects How is camera position kept constant throughout Bit of a ramble, this post. I think the problem is that there's something of a gap in the tutorials I've found. Coverage of basicEffect tends to be, well, basic. People tend to move on to simple custom effects for rendering even relatively simple objects. Any answers/hints/tips or handy links would be much appreciated. Thanks all. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - App I am trying to make an application the locks the screen, then on my button psuh, it closes. I have the press part and the close part but now I am trying to make sure it stays open if somone Alt+f4 or Control+Alt+Delete. Here is my code so far: protected override void Update( GameTime gameTime) { keyboardState = Keyboard .GetState(); // If the ESC key is pressed, skip the rest of the update. if (exitKeyPressed() == false ) { base .Update(gameTime); Simulate(); } } void Simulate() { // Add game-specific logic. } bool exitKeyPressed() { // Check to see if ESC was pressed on the keyboard or Back was pressed on the controller. if (keyboardState.IsKeyDown( Keys .Q)) { if (keyboardState.IsKeyDown( Keys .W)) { if (keyboardState.IsKeyDown( Keys .E)) { if (keyboardState.IsKeyDown( Keys .R)) { if (keyboardState.IsKeyDown( Keys .M)) { Exit(); return true ; } } } } } return false ; if (keyboardState.IsKeyDown( Keys .F4)) { using ( Game1 game = new Game1 ()) { game.Run(); } } } Moderators: I know this is longer than 10 lines but this is the part of the program that I need help with, it can't be shortened. (Im pretty sure) ____________________________________ How do I keep it open for Alt+f4 or Control+Alt+Delete and any other tricky ways Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Which graphics cards will work with XNA GameStudio Express? Just needs to be a DX9, shader 1.1 compatible card. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - 3-D Object Creator? I use Milkshape 3d ( http://chumbalum.swissquake.ch/ ) for model editing. It's pretty easy to use, and only $30. I use LithUnwrap ( http://files.seriouszone.com/download.php fileid=198 ) to edit the UV maps. It's a bit more difficult to use but it's free. I also use Photoshop and Paintshop Pro to make my textures. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - What tools do I need to write sprite-based games? Re 2D sprites. I would also recommend Gimp for Windows ( http://gimp.org/windows/ ) and GraphicsGale FreeEdition( http://www.humanbalance.net/gale/us/ ) for sprite editing. I'm always oscillating between these two packages and good (sic) old Paintbrush (pbrush.exe). Gimp Effects are particularly powerful for creating graduated backgrounds, motion-blurred images and the like. www.turbosquid.com/xna have some free 3D textures in the requisite .x format and there's always Ari Feldman's classic spritelib ( http://www.flyingyogi.com/fun/spritelib.html ) collection of 2D invaders, 1942 graphics etc. A bit chunky by today's standards but will give you a quick start. Good luck! Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - game time Codata wrote: Hi, The way i do this is as follows: public class Game1 : Microsoft.Xna.Framework. Game { float elapsed = 0; } protected override void Update( GameTime gameTime) { elapsed += ( float )gameTime.ElapsedRealTime.TotalSeconds; Console .WriteLine(elapsed); } hope this helps Codata many thanks, but it still just prints 0 everytime the function is called Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - ElapsedGameTime vs ElapsedRealTime hi again i'm a bit confused about this two props. in mdx common framework we had one parameter float elapsedtime, and now we have 2 times. someone can tell me physical difference beetwen them p.s. i debugged miliseconds and seconds of both times. the result is strange enough: only game miliseconds iz non-zero, real miliseconds jumping permantly from zero to approximately the same value as gametime... p.p.s in addition there is TotalMilliseconds prop, altogether - 4 milliseconds properties, totally confused :S - this item solved, milliseconds - int, totalmiliseconds - double :) Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - New Farseer Physics Engine Release This version contains quite a few updates... including collision events which many have been asking for. You can read about it here . You can download it here . This is a free 2D Physics Engine for XNA. Have fun! Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Rants on XNA 1.0 To Jonas: Yes, that's what I want to say. To Flavious Yes. I do have a VC#Express integration rant post before. I don't like the "all in IDE" mode too. But I saw in the forum there's a separate XNA Build tool which solves this. In regards to replacing MDX, I used to think it would but now I think they're for different things. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - No text input in WinForm controls Thanks, Leaf. I tried as you suggested, and used a separate "floating" form for my GUI: static void Main( string [] args) { using ( Form1 form1 = new Form1 ()) { form1.Show(); using ( Game1 game = new Game1 ()) { game.Run(); } } } This works fine, and also text entry works. Interestingly, the game loop seems to dispatch messages for all forms. Unfortunately, the GUI form cannot be added to the game form as a control (like f.Controls.Add(anotherForm) ), so I will have more work to dock the GUI on top of the game form. Any ideas how to do that I remember Win32 had assignable child windows, where you could put an existing window under the control of a parent window, but I could be wrong. Btw, all this is for a university course on computer graphics where I need text boxes to enter transformation matrix elements, etc. Christian Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Problem with new Animation sample A new animation sample from Microsoft SUPER Where can I find this sample Thank you Toni Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Collision Detection With Bezier Curves 1st problem solution - do the check on place before actually moving object onto this place...(pretty simple and no "old school wall stutter effect"). 2nd ... I understand that you want to make some formula for bouncing - while you have some formulas for bezier...you should already know how to do it . When hit occurs recalculate bezier formula with objects parameters(speed, direction) for bounceOut parameters. I am not gonna do it for ya. Since it's 2d you could try some diiferent approach - "per pixel collision". But your method could be very powerful and more accurate then per pixel, so don't give up. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Someone from MS should clear this up I just tried to launch the Game Launcher and it tells me I don't have a Creator's Club membership and won't allow the Game Launcher to run. I seriously doubt the poster is correct. Of course, the people that told him they did this were probably just lying so it's not his fault. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Sprite animation Let me start off by saying that I ALREADY KNOW how to animate sprites. I think the way I've been doing my animation, though, isn't really recommended as it can cause hiccups. Here's what I've been doing: I've got a sprite class. This class has a DateTime member called startTime. It also has a TimeSpan member called timePassed. In my constructor I have the following bit of code at the very end: public Sprite() { ... DateTime startTime = DateTime.Now; } which sets the initial point of reference for the sprite. I've also got an UpdateFrame function that basically checks the current time, sees if enough milliseconds have passed, and either exits or changes the frame of the sprite: //this will check to see if it's time to change the animation frame. private void UpdateFrame() { timePassed = DateTime.Now - startTime; int totalMilliseconds = timePassed.Milliseconds; if (totalMilliseconds >= 250) { frame++; frame = frame % 4; //keep it within the 4 frame boundry of this sprite startTime = DateTime.Now; } } Now I know this works. It works well. The thing is, I think it might work better for me if I use the current gameTime and such. Doing it this way seems like it's more along the lines of what's expected with XNA. Can someone perhaps tell me if they way I'm doing it is fine, or perhaps show me a quick example using GameTime instead I was thinking I could use the GameTime object to return the total time since start up, and use that as my reference check point. Dunno if this is preferred or not, though. Thanks! Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - XNA with VertexBuffers only? (No loading content) I've posted some simple programs that create all their content in memory (except for the effect file). I think you may find them helpful. You can find them at this link . They're the ones named "Simple Program" Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Color Banding If the problem isn't with the color depth in the texture format, the problem could be the color depth in the back buffer format. Try specifically selecting a 32-bit color format backbuffer by adding this line before your graphics device is initialized (Game.Initialize) and see if the problem persists. graphics.PreferredBackBufferFormat = SurfaceFormat .Rgb32; Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Files on Xbox360 Elurahu wrote: - Say I wanted to use a .3DS file to represent my scene and models. Are there a way to get this file to the xbox360 without using the content pipeline since it doesn't support this format. I know this might be a simple problem, but I just can't seam to figure out how to do it. I know that Abi's RocketCommander uses some custom .level files which is just placed and copied directly. Would this work for .3DS files as well I'm not sure as I haven't yet ordered my creators club subscription, BUT from what little i know about it, no... There most likely IS a way, I've just never seen it Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - How can I pass Cubemap texture into Pixal Shader ? What texture format and size is your cubemap I'm guessing it is in a format that's not supported by your graphics card. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Form file not found ? Punkoff wrote: (they are russians. russians would never pay for windows because they always buy a cheap cracked version). Hmm, this could be a problem. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - LoadGraphicsContent - Is it right to load ALL graphics content at the start That's a good idea! Can you have two ContentManagers Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - user clip planes @Shawn: Done! @Rick: Indeed, and the plane constructor using 3 points which I resorted to was also faulty in Beta2. This error was already known on the Connect site. Luckily, Derek helped me out so I got my planes correct ;) Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Present() hangs for 10 seconds when mixing DirectX full screen and GDI > Does this happen with the Managed DirectX SDK samples also YES!!! Deader than a door nail - forever. It's very easy to reproduce. Make a visual C# application, add a label1 and a button1, then add the following code to the button click event: private void button1_Click(object sender, EventArgs e) { int a = 0; label1.Font = new Font("Arial", 24, FontStyle.Regular); while (true) { a++; label1.Text = "Hello: " + a; Application.DoEvents(); } } Run the application, move the window over to the other monitor, and then click button1. Now run the BasicHLSL (managed) DirectX example from the Dec 2006 SDK. Switch to full screen, wait a few seconds, and poof - dead. -Jeremy Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - SpriteBatch drawing speed Couple of things: How were you doing the Pixel detection That could make a big difference in performance. It doesn't sound like you have alot of pixel collisions to detect, so that shouldn't be a big deal. Second, I don't have an XBox 360 to try it out and know for sure but is it possible to deploy in both Debug and Release mode to the 360 If so, make sure you are deploying in Release mode (Control-F5) when testing for performance, because the debugging adds alot of overhead to your processing. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.
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    - Issue with far plane distance vs. radius in a camera component just from watching the ideo, that looks like near plane clipping. How do you calculate the nearPlaneDistance variable Cheers, Leaf. Tag: Game Technologies: DirectX 101 Select a mesh Game Technologies: DirectX, XNA, XACT, etc.

Enix591

im trying to create a scene editor like app for my engine.

In my mesh class, i have a boolean variable called "Selected". It determines if the mesh is selected.

So does anybody know how to determine the coordinates of the mouse.

And ,

Determine a bounding rectangle on the part of a mesh viewable.

If you dont understand that, just think of how i can click on and select/deselect a mesh.

Thanks in advance

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Re: Game Technologies: DirectX 101 Select a mesh

Talyrond

Here's a very good tutorial that should help:

http://www.mdxinfo.com/tutorials/picking.php

Julian

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