Irrlicht Engine

Link is dead. Can anyone upload source code again, please?

You should read collisions tutorial.

To find distance you can create vector from you node. Set it's length to "infinity", change direction and find point, where it hit wall.

Try without this line
driver->removeAllTextures();

If you remove texture every scene node that use it will cause error when smgr->drawAll() is called.

I'm not sure if GUI fonts aren't destroy after removing textures.

I'm using subversion from http://subversion.tigris.org/ - its work on windows.

You can use one device to render in multiple windows.
In function endScene you can specify window ID, and viewport size. But you have to create windows "manually" (with winAPI or forms).

look at primitives supported by direct3d
http://msdn2.microsoft.com/en-us/library/bb172589.aspx


typedef enum D3DPRIMITIVETYPE
{
D3DPT_POINTLIST = 1,
D3DPT_LINELIST = 2,
D3DPT_LINESTRIP = 3,
D3DPT_TRIANGLELIST = 4,
D3DPT_TRIANGLESTRIP = 5,
D3DPT_TRIANGLEFAN = 6,
D3DPT_FORCE_DWORD ...

You can use draw2DImage and draw background like everything else in 2D. Just use big rect (0,0,800,600). And don't forget that it should be drawn before everything else, because 2D images don't use any Z order.

That's exactly the problem, if it's not in power of 2 it will be scaled and getting destored !!! ;)
There was bug in 1.3.1 with OpenGL. Look in source code at Draw2DImage. Texture coordinates are scaled - every texture coordinate is divided by original texture size, not by new size (power of 2 ...

Maybe you have invisible object above the button. For example in addStaticText you have used too big rectangle to make sure that it will be big enough to text.

In Irrlicht you can use functions like

irr::scene::ISceneCollisionManager::getSceneNodeFromScreenCoordinatesBB
to check what scene node is under mouse cursor.
To check exactly point under mouse cursor use...
core::line3d<f32> irr::scene::ISceneCollisionManager::getRayFromScreenCoordinates ...to ...

Full documentation is in doc/irrlicht.chm and http://irrlicht.sourceforge.net/docu/index.html

1. This code is adding cube scene node.

scene::ISceneNode* n = smgr->addCubeSceneNode();

if (n)
{
n->setMaterialTexture(0, driver->getTexture("../../media/t351sml.jpg"));
n->setMaterialFlag(video ...

I had some problem in Code::Block.

To solve it I changed (in CSceneManager.cpp)

2199 //! Returns a mesh writer implementation if available
2200 IMeshWriter* CSceneManager::createMeshWriter(EMESH_WRITER_TYPE type)
2201 {
2202 switch(type)
2203 {
2204 case EMWT_IRR_MESH:
2205 return new ...

I used that code, and it's work fine.

Texture dimensions don't have to be in power of 2. It will be scaled by engine. But in draw2DImage source coordination will be scaled from 0 to 1 not with new dimensions , but with original dimensions of texture.

EDIT: I'm using Irrlicht 1.4, where getSize ...

If you will use

driver->beginScene(true, true, video::SColor(0,200,200,200));
// render points/lines
driver->endScene();

and then you will draw everything else in main loop
driver->beginScene(true, true, video::SColor(0,200,200,200));
smgr->drawAll();
env->drawAll();
driver->endScene();

you ...

It's works fine.

Just add button with image. Borders wouldn't be draw, becouse Irrlicht draw it before image. You can also turn borders off.


gui::IGUIButton *MyButton = Gl.Irr.gui->addButton(Position, parent, ID, L"", L"");
MyButton->setImage( TextureForButton, FirstRect);
MyButton ...