//Loop function
static void engine_draw_frame(struct engine* engine) {
    if (lastDTE == 0)
        lastDTE = clock();

    if (engine->display == NULL) {
        // No display.
        return;
    }

    glViewport(0, 0, engine->width, engine->height);

    glClearColor(0.0, 0.0, 0.0, 1.0);
    glClear(GL_COLOR_BUFFER_BIT);

    unsigned long startDraw = GetTimeMs64();

    clock_t curTime = clock();
    double elapsedTime = ((float) (curTime - lastDTE) / CLOCKS_PER_SEC);

    state->calculateNextFrame(elapsedTime);

    lastDTE = curTime;

    state->draw();
    checkGlError("draw");

    unsigned long endDraw = GetTimeMs64() - startDraw;

    unsigned long start = GetTimeMs64();

    eglSwapBuffers(engine->display, engine->surface);

    unsigned long end = GetTimeMs64() - start;

//Drawing
void Gamestate::draw() {
    clock_t start = clock();

    //background->draw();

    mapController->draw();

    lights->draw();
    enemyManager->draw();
    powerupManager->draw();

    //Controls
    moveControl->draw();
    rotateControl->draw();

    curElement->draw();
    player->draw();

    //LOGI("Draw time : %f", ((float) (clock() - start) / CLOCKS_PER_SEC * 1000));

}

//Logic
void Gamestate::calculateNextFrame(float dt) {
    int region = lights->getActiveColor(player->getX(), player->getY());

    if (region == 0) {
        curElement->setTexture(Engine::getTextureByResource("fire.png"));
    } else if (region == 1) {
        curElement->setTexture(Engine::getTextureByResource("water.png"));
    } else if (region == 2) {
        curElement->setTexture(Engine::getTextureByResource("earth.png"));
    } else if (region == 3) {
        curElement->setTexture(Engine::getTextureByResource("air.png"));
    }

    powerupManager->tick(dt);
    enemyManager->update(dt);
    player->update(dt);

}