message: Toggle wind simulation
diff: class VulkanExample : public VulkanExampleBase
  {
  public:
  - uint32_t sceneSetup = 1;
  + uint32_t sceneSetup = 0;
  uint32_t readSet = 0;
  uint32_t indexCount;
  + bool simulateWind = false;
  vks::Texture2D textureCloth;
  @@ -114,7 +115,6 @@ public:
  camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 512.0f);
  camera.setRotation(glm::vec3(-30.0f, -45.0f, 0.0f));
  camera.setTranslation(glm::vec3(0.0f, 0.0f, -3.5f));
  - paused = true;
  }
  ~VulkanExample()
  @@ -659,6 +659,14 @@ public:
  compute.ubo.deltaT = 0.000005f;
  // todo: base on frametime
  //compute.ubo.deltaT = frameTimer * 0.0075f;
  + if (simulateWind) {
  + compute.ubo.gravity.x = sin(glm::radians(-timer * 360.0f)) * 4.0f;
  + compute.ubo.gravity.z = sin(glm::radians(timer * 360.0f)) * 4.0f;
  + }
  + else {
  + compute.ubo.gravity.x = 0.0f;
  + compute.ubo.gravity.z = 0.0f;
  + }
  }
  else {
  compute.ubo.deltaT = 0.0f;
  @@ -722,9 +730,24 @@ public:
  updateGraphicsUBO();
  }
  + virtual void keyPressed(uint32_t keyCode)
  + {
  + switch (keyCode)
  + {
  + case KEY_W:
  + case GAMEPAD_BUTTON_A:
  + simulateWind = !simulateWind;
  + break;
  + }
  + }
  +
  virtual void getOverlayText(VulkanTextOverlay *textOverlay)
  {
  - textOverlay->addText(std::to_string(frameTimer * 0.0075f), 5.0f, 85.0f, VulkanTextOverlay::alignLeft);
  +#if defined(__ANDROID__)
  + textOverlay->addText("\"Button A\" to toggle wind simulation", 5.0f, 85.0f, VulkanTextOverlay::alignLeft);
  +#else
  + textOverlay->addText("\"w\" to toggle wind simulation", 5.0f, 85.0f, VulkanTextOverlay::alignLeft);
  +#endif
  }
  };
  