~baltix/+junk/irrlicht-test

<td> <pre>if (node != 0 && event.EventType == irr::EET_KEY_INPUT_EVENT&&<br> !event.KeyInput.PressedDown)<br>{<br> switch(event.KeyInput.Key)<br> {<br> case KEY_KEY_W:<br> case KEY_KEY_S:<br> {<br> core::vector3df v = node->getPosition();<br> v.Y += event.KeyInput.Key == KEY_KEY_W ? 2.0f : -2.0f;<br> node->setPosition(v);<br> }<br> return true;<br> }<br>} return false; <br> } <br> };</pre></td>

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</table>

</div>

<p>The event receiver for moving a scene node is ready. So lets just create

an Irrlicht Device and the scene node we want to move. We also create

some other additional scene nodes, to show that there are also some different

possibilities to move and animate scene nodes.</p>

<tr>

<td><pre>int main()<br>{<br> MyEventReceiver receiver;

device = createDevice(video::EDT_OPENGL, core::dimension2d<s32>(640, 480),

16, false, false, false, &receiver);</pre>

<pre> video::IVideoDriver* driver = device->getVideoDriver();

scene::ISceneManager* smgr = device->getSceneManager();</pre>

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<p> Create the node for moving it with the 'W' and 'S' key. We create a

sphere node, which is a built in geometric primitive scene node.

We place the node at (0,0,30) and assign a texture to it to let it look

a little bit more interesting.</p>

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<td><pre>node = smgr->addSphereSceneNode();

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node->setPosition(core::vector3df(0,0,30));

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node->setMaterialFlag(video::EMF_LIGHTING, false);

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node->setMaterialTexture(0, driver->getTexture("../../media/wall.bmp"));</pre></td>

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</table>

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<p>Now we create another node, moving using a scene node animator. Scene

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node animators modify scene nodes and can be attached to any scene node

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like<br>

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mesh scene nodes, billboards, lights and even camera scene nodes. Scene

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node animators are not only able to modify the position of a scene node,

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they can<br>

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also animate the textures of an object for example. We create a test scene

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node again an attach a 'fly circle' scene node to it, letting this node

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fly around our first test scene node.</p>

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

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

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n->setMaterialFlag(video::EMF_LIGHTING, false);

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scene::ISceneNodeAnimator* anim =

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smgr->createFlyCircleAnimator(core::vector3df(0,0,30), 20.0f);

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n->addAnimator(anim);

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anim->drop();</pre></td>

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</table>

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<p>The last scene node we add to show possibilities of scene node animators

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is a md2 model, which uses a 'fly straight' animator to run between to

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points.</p>

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<td> <pre>scene::IAnimatedMeshSceneNode* anms = smgr->addAnimatedMeshSceneNode(<br> smgr->getMesh("../../media/sydney.md2"));

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if (n)<br> {<br> anim = smgr->createFlyStraightAnimator(core::vector3df(100,0,60), <br> core::vector3df(-100,0,60), 10000, true);<br> anms->addAnimator(anim);<br> anim->drop();</pre>

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</td>

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</table>

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<p>To make to model look right we set the frames between which

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the animation should loop, rotate the model around 180 degrees, and adjust

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the animation speed and the texture.<br>

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To set the right animation (frames and speed), we would also be able to

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just call "anms->setMD2Animation(scene::EMAT_RUN)" for the

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'run' animation instead of "setFrameLoop" and "setAnimationSpeed",

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but this only works with MD2 animations, and so you know how to start

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other animations.</p>

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<td> <pre> anms->setMaterialFlag(video::EMF_LIGHTING, false);<br> anms->setFrameLoop(320, 360);

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anms->setAnimationSpeed(30);<br> anms->setRotation(core::vector3df(0,180.0f,0));<br> anms->setMaterialTexture(0, driver->getTexture("../../media/sydney.bmp"));<br>}<br></pre></td>

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</table>

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<p>To be able to look at and move around in this scene, we create a first

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person shooter style camera and make the mouse cursor invisible.</p>

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<td> <pre>smgr->addCameraSceneNodeFPS(0, 100.0f, 100.0f);<br>device->getCursorControl()->setVisible(false); </pre></td>

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</table>

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<p>We have done everything, so lets draw it. We also write the current frames

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per second and the name of the driver to the caption of the window.</p>

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<td> <pre>int lastFPS = -1;</pre>

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<pre>while(device->run())

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{

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driver->beginScene(true, true, video::SColor(255,90,90,156));

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smgr->drawAll();

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driver->endScene();</pre>

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<pre> int fps = driver->getFPS();</pre>

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<pre> if (lastFPS != fps)

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{

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wchar_t tmp[1024];

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swprintf(tmp, 1024, L"Movement Example - Irrlicht Engine (%ls)(fps:%d)",<br> driver->getName(), fps);</pre>

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<pre> device->setWindowCaption(tmp);

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lastFPS = fps;

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}

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}

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device->drop();<br>return 0;<br>}</pre></td>

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</table>

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<p>That's it. Compile and play around with the program. </p>

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