#include <Irrlicht\irrlicht.h>

void    move_lightCube(irr::core::vector3df &posLight) {
    static int velocity = 1;

    if (posLight.X <= -50)
        velocity = 1;
    if (posLight.X >= 50)
        velocity = -1;
    posLight.X += velocity;
}

int main(void) {
    irr::IrrlichtDevice *device = irr::createDevice(
        irr::video::EDT_DIRECT3D9,
        irr::core::dimension2d<irr::u32>(720, 720),
        32,
        false,
        true,
        true,
        nullptr);

    irr::video::IVideoDriver  *driver = device->getVideoDriver();
    irr::scene::ISceneManager *sceneManager = device->getSceneManager();

    irr::SKeyMap keyMap[5];
    keyMap[0].Action = irr::EKA_MOVE_FORWARD;   // avancer
    keyMap[0].KeyCode = irr::KEY_KEY_Z;
    keyMap[1].Action = irr::EKA_MOVE_BACKWARD;  // reculer
    keyMap[1].KeyCode = irr::KEY_KEY_S;
    keyMap[2].Action = irr::EKA_STRAFE_LEFT;    // a gauche
    keyMap[2].KeyCode = irr::KEY_KEY_Q;
    keyMap[3].Action = irr::EKA_STRAFE_RIGHT;   // a droite
    keyMap[3].KeyCode = irr::KEY_KEY_D;

    sceneManager->addCameraSceneNodeFPS(0, 100.0f, 0.1f, -1, keyMap, 5);

    auto lightCube = sceneManager->addCubeSceneNode(5.0F, nullptr, -1, irr::core::vector3df(0, 40, 0));
    auto cube = sceneManager->addCubeSceneNode(5.0F, nullptr, -1, irr::core::vector3df(0, -10, 0));
    auto sphere = sceneManager->addSphereSceneNode(5.F, 64, nullptr, -1, irr::core::vector3df(6, 0, 0));
    auto floor = sceneManager->addCubeSceneNode(1.0F, nullptr, -1, irr::core::vector3df(0, -20, 0));

    irr::scene::ILightSceneNode *light = sceneManager->addLightSceneNode(
        nullptr,
        lightCube->getPosition(),
        irr::video::SColorf(0.4f, 1.f, 1.f, 1.f),
        100.0f);

    floor->setScale(irr::core::vector3df(50, 5, 50));

    cube->setMaterialTexture(0, driver->getTexture("aa.png"));
    floor->setMaterialTexture(0, driver->getTexture("bb.png"));

    lightCube->getMaterial(0).EmissiveColor = irr::video::SColor(255, 0, 255, 255);

    irr::core::vector3df vec(0, 0, 0);
    irr::core::vector3df vecLight(0, 15, -15);

    cube->addShadowVolumeSceneNode();
    sphere->addShadowVolumeSceneNode();

    while (device->run()) {

        vec.X += 1;
        vec.Y -= 1;
        vec.Z += 1;

        cube->setRotation(vec);

        move_lightCube(vecLight);
        lightCube->setPosition(vecLight);
        light->setPosition(lightCube->getPosition());

        driver->beginScene(true, true, irr::video::SColor(255, 50, 50, 50));

            sceneManager->drawAll();

        driver->endScene();
    }

    driver->drop();
}