SIO2 Engine

Using sio2LookAt

teh1ghool — Tue, 27 Oct 2009 23:38:59 GMT

I don't quite understand what it wants. It says (vec3, vec3, vec3). Which vectors do I put in it? I tried putting a vec3 in just the first. There are no good docs on how to use the functions...

Parenting lights

danisegarra — Mon, 26 Oct 2009 18:31:07 GMT

Hello: I was trying to parent a SIO2lamp with a SIO2object. I can parent two objects with _SIO2object2->_SIO2transform->_SIO2parent = _SIO2object->_SIO2transform; and it works grate. But if I try to parent a light with _SIO2lamp->_SIO2transform->_SIO2parent = _SIO2object->_SIO2transform; it doesn't work. I tried to create an auxiliar child object and, in every frame, give the position of the object to a light, but it doesn't work because the location of the ...

Randomly change one's position or what?

kazuki — Wed, 28 Oct 2009 09:24:12 GMT

And a copy, I'd like to see a random position change, I change position significantly. To do so should I change it? It's like what you write. [code] for(i = 0; i < 4; i++) { _SIO2parent = object->_SIO2instance ? ( SIO2object * )object->_SIO2instance : object; sprintf( name, "%s_%d", _SIO2parent->name, i ); duplicate = sio2ObjectHardCopy( _SIO2parent, name ); //duplicate = sio2ObjectSoftCopy(_SIO2parent, name); if(i == 0) { object->_SIO2transform->loc->x ...

metaball animation

taxpon — Mon, 26 Oct 2009 12:17:28 GMT

Hi

I'd like to know how to use metaball animation with SIO2 and Blender.
(ex. using object on SIO2 which was made by "Add>Meta>Meta Ball" in Blender)
I tryied, but I cannot use it.

Please tell me the method, if someone know it.
or not supported??

thanks

animation completed callback?

corpseLike — Sun, 25 Oct 2009 09:24:49 GMT

Hi all,

I need to know when an animation has finished playing but alas I cannot find any way of determining when an action is finished; is there a way to provide a callback on the SIO2action or another object?

Please help....

Regards,

Corpse.

Rotating SIO2Widget?

CadetCrusher — Sat, 24 Oct 2009 19:04:51 GMT

What's the best way to rotate an SIO2widget? It wouldn't make sense to use the rotation vector in _SIO2transform because that pertains to 3 dimensions. I just want to rotate the widget around its center in 2d (like a record spinning). Best approach do accomplish this?

Thanks.

Character Model and Collisions

hemmi — Sat, 24 Oct 2009 05:28:41 GMT

Hello.

Let's say I have a model of a human being. When this is turned into physics by sio2, will it easily just fall over? I'm doing a fighting game, and I'd like to enable physics for the ground/platforms. Is the integrated bullet engine a good idea for this type of thing or is this something better done on my own?

car racing game in sio2

Developer123 — Tue, 20 Oct 2009 14:11:29 GMT

i want to develop a car racing game in sio2 for iphone where two cars race against each other. and need to know how to simulate differnet tracks and cars on them and change their speed . is there any tutorial /guildelines or books. or simply where should i start . i have read the sio2 tutorial and code and some how get some general code ideas. but still lack the logic/knowledge to kickstart my project.

Thanks in advance!

collisions

remus_leonte — Fri, 23 Oct 2009 11:11:23 GMT

I have this code and the collision sensor is nor evaluated. void collisonCallback( void *_ptr ) { NSLog(@"collision"); } //in templateLoading sio2SensorInitCollision("mysensor", player, plane, collisonCallback); //and in templateRender sio2ResourceRender( gameResource, sio2->_SIO2window, gameCamera, SIO2_RENDER_SOLID_OBJECT | SIO2_RENDER_TRANSPARENT_OBJECT | SIO2_RENDER_ALPHA_TESTED_OBJECT | SIO2_EVALUATE_SENSOR ...

Integrating SIO2 with Obj C classes

bwalker — Tue, 28 Jul 2009 23:23:05 GMT

hi there, I've just started delving into SIO2. Pretty cool so far. I've got one of the tutorial apps integrated as a subview into a basic iPhone app I've been working on. However I'm having trouble conceptualizing how to communicate between my Objective C classes and the C template.mm class. I could throw all my function calls into the EAGL view, but that seems messy and would rather follow how you've set up your tutorials. How do I call the C class functions from my Objective C classes? thanks! -brett p.s. ...

Black Screen AFTER Loading on Device

quantass — Thu, 22 Oct 2009 17:31:33 GMT

I'm having a little trouble with SIO2. My ipod touch is using version 3.1.1. I've installed OSX 10.5.8, Xcode 3.1.4, Blender v 2.49 I've compiled tutorial #3 and run it through the simulator (version 3.0) fine. I've also successfully installed it on my device. I decided to use the tutorial to display my blender export, scene.sio2. Again the simulator displays my exported scene fine BUT now when i go to view it on my ipod touch device, it installs fine but after the LOADING screen all ...

TEXTURE TILING -- Why Doesn't It Work?

quantass — Wed, 21 Oct 2009 14:34:38 GMT

Using Tutorial 8 as a reference I'm trying to texture my simple plane object. I've successfully done so through the UV Editor. Because the mapped texture looks stretched I'm trying to tile it across the plane by scaling the UV coordinates to be larger than the image (as shown in Tutorial . When i export and view it within the iphone simulator I see the mapped texture looked completely undecipherable appearing smeared across the entire object. It's as if iphone is getting confused by the UV ...

Getting objects to "stick" to a surface with friction

CadetCrusher — Wed, 21 Oct 2009 05:26:56 GMT

I have a platform with objects that sit on top of it. All physic work correctly until I start to move the platform. Basically the platform moves back and forth (on x axis) with the objects on top of it. However, the objects do not "stick" to the platform's surface (like if you moved a table with plates on it, they would stay on the table (unless the table moved really fast)), they just slide off of the platform. I have set the platform to be "anisotropic" with friction values, ...

Camera rotate about y-axis

CadetCrusher — Thu, 15 Oct 2009 06:35:23 GMT

I've searched the forums and tutorials and cannot find a definitive answer on how to rotate the camera about the y-axis. I've tried _SIO2camera->_SIO2transform->rot->y and re-binding the matrix with sio2TransformBindMatrix(), but that has no effect. I've read on the forums to use sio2Lookat(), however I'm not quite sure how to use it to get the desired y rotation. Any help would be appreciated. I'm still new to the SDK, but it's pretty sweet and I'm getting the hang of it. I just ...

How to stop Particle?

LuisLee — Wed, 21 Oct 2009 01:10:20 GMT

How to stop Particle? I used particle system do Explosion effects ！But you can not stop it.
When I use sio2EmitterStop () function, but Suspended particles.

In my demo,When Throw grenade,Hit and exploded , like sio2interactive's 3d shooter,How to stop Particle?

thank you!

Transparency < 50% = Invisible. Why?

sgreenwalt — Tue, 20 Oct 2009 18:55:25 GMT

No problem with transparency (material->blend=SIO2_MATERIAL_COLOR) if a face is uv-mapped to an area of the png where transparency is > 50%. But, if mapped to an area where transparency is < 50%: The face won't render and shows up as invisible at run-time. - Not using SIO2 lighting. * Could this be is a problem with the ->specular, ->diffuse, or ->shininess properties of the material type? * What are the max/min values for those properties and how do they ...

Upgrading Bullet

hemmi — Tue, 20 Oct 2009 02:00:59 GMT

Hello, I'm trying to include the latest trunk version of bullet in my sio2 project. I'm having trouble. If I create a blank project and copy the bullet src directory, bullet compiles fine, assuming I use 'src/**' as a header search path. However, if I copy the same bullet src directory into the template sio2 project, I get about 10000 errors; bullet just won't compile. And here I'm using the same header include path. Basically all the errors say that the files in the src directory don't ...

Sio2 related help needed

Developer123 — Tue, 20 Oct 2009 06:41:28 GMT

i need some guide lines regarding desiging a game in sio2 hope some one can answer my questions i want to develop a car racing game in sio2 for iphone where two cars race against each other. and need to know how to simulate differnet tracks and cars on them and change their speed . is there any tutorial /guildelines or books. or simply where should i start . i have read the sio2 tutorial and code and some how get some general code ideas. but still lack the logic/knowledge to kickstart my project. Thanks ...

Multi-Materials for one object

zyzyandzyzy — Mon, 19 Oct 2009 15:33:35 GMT

Hi:

Is it possible to rend a object with multi-materials, I've had a try with tutorial02's code (sio2ResourceBindAllMaterials added), though all the materials are imported correctly, only got white model (no material) on the screen.
Is that a fact that only ONE material is supported for one object? or there's other methods?

Thanks in advance,
-Yi

Using chipmunk and sio2

hemmi — Sun, 18 Oct 2009 01:19:24 GMT

Hey guys,

Could someone point me in the right direction regarding using chipmunk with sio2? I'd like to create a 2d game with 3d rendering. I'm comfortable with chipmunk and the simplicity of working with 2d physics in a 2d physics engine really appeals to me. Has this been done before in sio2?

Thanks!

Resetting object position

CadetCrusher — Sun, 18 Oct 2009 21:01:04 GMT

What is the best way to reset an object's position? For example, when a ball goes out of the play area I'd like to move it back to it's starting position. I've tried setting the _SIO2transform->loc vector of the object then calling sio2TransformBindMatrix(), but that doesn't work. The object is a physics object, BTW.

What do I need ?

arturapps — Thu, 15 Oct 2009 11:57:18 GMT

Hi People...

These are my very basic questions.

What do I need to start using SIO2 ?

Can I use the SDK on a PC running Windows ?

How do I compile the game and transfer it to IPhone ?

Can I use C++ ?

Haw about the programming IDE ?

Can I test the game on PC or MAC before running it on Iphone ?

Augmented reality

manuelmartinf — Sat, 17 Oct 2009 12:06:45 GMT

Does anybody knows if it is possible to do an augmented reality app based on the sio2 template?

I've read that with the last iphone sdk you can overdraw the video image from camera with the new cameraOverlayView property but I don't know how to use it.

Any ideas?

Thank you!

Adding SIO2 to an existing Xcode iPhone project

Chintan100 — Fri, 16 Oct 2009 12:28:35 GMT

Hi, I am working on a 2D boardgame which has 2 views 2D and 3D. I have developed the 2D part using the standard UIKit controls as it is not much complicated to be in need of any library or frameworks. The problem is, i want to add SIO2 for the 3D part to this project. I tried various methods like adding the "src" folder to the project and importing the sio2.h file by writing the relative path. I also made a static library for as mentioned here. I added the static library ...

Adding a UIViewController to the SIO2 template

manuelmartinf — Fri, 16 Oct 2009 18:59:38 GMT

I have added the viewControlleer .h and .m, with the EAGLView class added to this viewController. Then I have replaced the calls to the EAGLView class on the applicationDidFinishLaunching procedure on the templateAppDelegate by the calls to the EAGLView member of the new viewController class. The code doesn't crash but doesn't draw nothing on the screen. Maybe it's a problem with the NIB file. To sum up, does anybody knows how to add properly an UIViewController to the SIO2 template? Thank ...

Particles Question

Muller — Fri, 16 Oct 2009 09:07:46 GMT

Howdy! Here's the requirement: I'm trying to render a decent looking water effect. Only this isn't a pool of water, but rather a stream of water, dripping from the top of the screen. The stream will be interrupted by ramps and fans and wheels and all sorts of stuff, but basically it will stream down and sometimes go left and right, until it hits the bottom of the screen and vanishes... Here's the plan: I'll have an array of vec2, where each vec2 is the location of an invisible Bullet ...

Render 3D Object in GUI

AstAn — Tue, 13 Oct 2009 19:47:27 GMT

I am currently trying to render a 3D object as part of the GUI. Is that even possible? I was hoping that I could render it without the normal perspective so the all of the objects look the same which would not be the case if I rendered them in the 3D mode close to the camera.

Sensor again

LuisLee — Thu, 15 Oct 2009 07:33:54 GMT

Hi,I want to remove the Sensor，beause I want this to be executed once,I use this methods: Code: mySIO2sensorcollision(void *_ptr) { SIO2sensor *_SIO2sensor = ( SIO2sensor * )sio2ResourceGet( sio2->_SIO2resource, SIO2_SENSOR, ...

Best approach to create a 2D boardgame with 3D game board

Chintan100 — Wed, 14 Oct 2009 05:42:29 GMT

Hi everyone, I am getting started with SIO2 with a board game similar to checkers with the only twist that the board will be in 3D . Very similar to 3D Checkers on app store. (Link here: http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=319129091&mt=8 ) . I want to know what is the best approach to create this game. I have the following approach in mind: 1. Show the texture of the game board and adjust the camera so that we can have a view of the board ...

NSMutableArray with vec2 as cells?

Muller — Wed, 14 Oct 2009 14:22:00 GMT

I'm currently learning to use Objective-C, and trying to create a NSMutableArray where each cell is a vec2 struct from SIO2.

I read that I cannot do that, a cell in a NSMutableArray cannot be a C struct or type (such as bool, float), so what is the solution here exactly?

I thought it'd be easy to use Objective-C and SIO2 structs together?

SIO2Widget area - getting some strange results..

Krypt — Wed, 14 Oct 2009 08:27:14 GMT

Hi, I'm using SIO2widgets to render my 2d main menu, including the background and three buttons (all seperate widgets). Each of the button widgets has a tapdown event, and I have set the area to be the image->width and image->height of the button, but I'm noticing that the tapdown detection is triggering in odd places, and not where i'd expect (i.e., over the image). I've modified one of the tutorials in the past and the tapdown area worked as expected, but in this case even ...

SIO2Widget help

CadetCrusher — Wed, 14 Oct 2009 06:20:36 GMT

I'm having a bit of trouble trying to get SIO2widget to work. I could only find an example of how to use it in tutorial07, so I tried to use what I found there to make my widget. However, my game crashes when executing sio2WidgetRender(). My widget is really just an image that needs to respond to taps/drags. Here's what I'm doing: Code: if(hudWidget == NULL) { SIO2stream* tmpStream = sio2StreamOpen( "hud.jpg", 1 ); ...

any plans for a N900 port?

wirelessdreamer — Wed, 14 Oct 2009 03:38:23 GMT

Do you have any plans to port this engine to run on the Nokia N900?

Compiled Lua

Hobsie — Tue, 13 Oct 2009 11:47:33 GMT

Hi there, New on the block and all that. Had a quick search through the forum and the tutorials for this but couldn't find anything. Was wondering if Sio2 supported compiled Lua files and if so what the work flow would be for creating compiled lua files and loading them in source. Also I couldn't find any obvious functions on how to export C/C++ source to lua. For example an object made in C/C++'s functions exposed to Lua to be able to call functions on it. Thanks in advance. Hobsie

Move Convex Hull character (like zombie in Tutorial 15) around in third person in sio2 V1.4

monkeys — Wed, 29 Jul 2009 02:55:05 GMT

I was wondering if you would be so kind as to explain to me what I need to do to get a character with an animated convex hull collision shape (like the zombie from tutorial 15 of sio2 v1.4, very nice work by the way!), to move around the map in third person, like with the 'player' cylinder from tutorial 9. I was able to achieve this quite easily in v1.35, I simply used the some of the code from tutorial 9, using the functions _btRigidBody->getWorldTransform, for rotation and _btRigidBody->setLinearVelocity ...

Join objects and materials problem?

ypyean — Tue, 13 Oct 2009 08:47:53 GMT

Hi, I have imported an object from .3ds file and the object composed by 5 different meshes and two materials. I would like to join them together to one object. After join them together, it can be rendered in blender correctly. However, when I exported it to .sio2 and loaded it in simulator, only the first one materials was shown (entire object was covered by first materials). Is there a way that SIO2 can handle two materials in one object? Thanks for your help.

Toon (cel-) shading, ideas?

yarri — Mon, 12 Oct 2009 23:53:12 GMT

Hi, I haven't really done much yet but look at the HeNe code but has anyone tried applying toon or cel-shading techniques using SIO2?

http://nehe.gamedev.net/data/lessons/lesson.asp?lesson=37

Thanks,
--yarri

New book on Blender/SIO2 available for pre-order

bugman_2000 — Tue, 13 Oct 2009 00:43:49 GMT

Hi Everybody, I wanted to let you all know that I am just wrapping up a new book on using SIO2 and Blender to create 3D apps for the iPhone. It seems like this forum ought to be the first place I announced this, because I've learned a great deal here. Thanks to everybody who's made helpful posts in here, and thanks also to all the people who have contributed artwork and game images! I should say right now that this book isn't really for the gurus in here. My goal was to help to broaden ...

SIO2 Website

sio2interactive — Tue, 13 Oct 2009 03:28:21 GMT

Im currently moving some resources to a new architecture... If a resource on the website is not available please try again later

Sorry for any inconvenience, it should be all fixed in the next 24 hours...

Cheers,

ROm

Menus again

StasIsLovE — Wed, 30 Sep 2009 23:50:53 GMT

Hi! I am beginning a game project, idea is to use sio2, but first thing I did was to run into a wall with menus, I tried to look for info and reading old posts here but can't really find the answer. I found that menus can be solved with widgets, I looked at tutorial 7, even though it is hard to grasp I might be able to make a menu given couple of days trying to understand the tutorial and hacking away in the template, but the problem is that I would like for player to be able to type ...

How to control the game fps?

LuisLee — Mon, 12 Oct 2009 02:55:08 GMT

In my games，As long as an object collisions, the game's fps will drop.

Down to 15fps . (Originally 30fps),

fps is so low，This is normal?My big scene, but as long as no collision, there is 32fps.The number of scene faces 1000. Fps drop is not normal. Have any suggestions? thank you!

Render unlit surface

AstAn — Sun, 27 Sep 2009 18:11:51 GMT

For my background I want to render an unlit plane in the background.

My problem is that although I call

sio2LampReset();
Light::ResetCurrentLightNum();
sio2LampResetLight();

the surface is still lit. I guess I am missing some reset method.

Moving third person object on all axes

CadetCrusher — Wed, 07 Oct 2009 22:33:02 GMT

Ok, this is a pretty noob question, but here it is: How do I move an object through space, on all axes? Like a space ship that can rotate an move up or down on x, y, and z. Using setLinearVelocity() is fine and good for moving an object the remains on the ground and only needs to move on the y and x axes, but how do I move on the z? I'm using the tutorial09 as a learning tool (because it has an example of 3rd person camera), but I can't seem to figure out what I need to do. Hence my plea ...

update animated physic shape

IanLinart — Fri, 09 Oct 2009 12:12:22 GMT

Hi, In tutorial 15, you created a callback function that updates the animated physic shape for a convex hull shape. My questions is, how should I do for other shape like box (in my case)?

Camera strafe

_-MADMAN-_ — Wed, 27 May 2009 11:37:14 GMT

How Can I get camera strafe directions? I have tried this: Code:btVector3 bslide (sio2->_SIO2camera->_SIO2transform->dir->x*90.0f, sio2->_SIO2camera->_SIO2transform->dir->y, sio2->_SIO2camera->_SIO2transform->dir->z); Works weel until I rotate the camera - bslide doesn't update, it's always the same world direction. Also tried to flip x with y with no succes (bugs between 0-90-180-360 angles). Any advice will be great! Regards, Mad

How to save & use ipo.

Jyotsna Kadam — Thu, 08 Oct 2009 06:12:11 GMT

Hi to all, i am new with the sio2 and 3D. I want to know how to save the ipo in blender and use it in our program. In my application I have one 3D object. I have created it's all frame through blender but I don't know how to save the created frame and use it in our program. I don,t have camera in this person.blend because I used camera in my other blender i.e. in surround.blend.I have bind both these blender. I am stuck with this issue. I just want my player should walk continuously. ...

Distance / Ray based Camera - No Rigid bodies

swebal — Thu, 08 Oct 2009 09:33:55 GMT

Hi all, I've been searching for forums for some implementation of using a distance ray for the camera instead of a ridig body and found to following links: Collision with object and object Collision with custom methods for camera , both of which seems to suit me very well. However... I can't seem to get the callback to fire? I created a sensor inside the templateLoading method with the distance method from link#2 as follows: Code: SIO2object *myplane = sio2ResourceGetObject( ...

SIO2 for 2D?

edoloughlin — Thu, 24 Sep 2009 07:59:30 GMT

I'm evaluating a number of engines for 2D iPhone game development. Is SIO2 suitable for this or is it overkill?

Gravity in SIO2?

CadetCrusher — Wed, 07 Oct 2009 19:49:13 GMT

I'm a super noob to SIO2 so this may be in the wrong section, but here's my question: Can you set the value of gravity in Blender/SIO2? More specifically, I'm making a game with a ship that you fly around in outer space. But as I'm finding out you can't use the setLinearVelocity() on a static object. The problem is when I set the player object (the ship) to be a dynamic object it starts falling towards the "ground". Is there a way to set gravity to 0? What would you suggest? Thanks!

Possible solution: Bone Animation sharing among instance objects

william — Wed, 07 Oct 2009 00:47:48 GMT

Hi, I was playing around with the bone animation system and i found that if i do a softcopy of an object, than the animation won't play. Looking at the code of sio2ObjectRenderAction I found this: Code: if( _SIO2object->_SIO2instance ) { return; } This won't make the animation play because a softcopy, if I understood well, just makes a reference to the original geometry object with the _SIO2instance member. Unfortunately in my applications ...