Method OnTouchEvent

Sources/Jazz2/UI/Menu/AboutSection.cpp:304–364

	}

	void AboutSection::OnTouchEvent(const nCine::TouchEvent& event, Vector2i viewSize)
	{
		switch (event.type) {
			case TouchEventType::Down: {
				std::int32_t pointerIndex = event.findPointerIndex(event.actionIndex);
				if (pointerIndex != -1) {
					float y = event.pointers[pointerIndex].y * (float)viewSize.Y;
					if (y < 80.0f) {
						_root->PlaySfx("MenuSelect"_s, 0.5f);
						_root->LeaveSection();
						return;
					}

					_touchStart = Vector2f(event.pointers[pointerIndex].x * viewSize.X, y);
					_touchLast = _touchStart;
					_touchTime = 0.0f;
					_autoScroll = false;
				}
				break;
			}
			case TouchEventType::Move: {
				if (_touchStart != Vector2f::Zero) {
					std::int32_t pointerIndex = event.findPointerIndex(event.actionIndex);
					if (pointerIndex != -1) {
						Vector2f touchMove = Vector2f(event.pointers[pointerIndex].x * viewSize.X, event.pointers[pointerIndex].y * viewSize.Y);
						float delta = _touchLast.Y - touchMove.Y;
						if (delta != 0.0f) {
							_scrollOffset += delta;
							if (delta < -0.1f && _touchDirection >= 0) {
								_touchDirection = -1;
								_touchSpeed = 0.0f;
							} else if (delta > 0.1f && _touchDirection <= 0) {
								_touchDirection = 1;
								_touchSpeed = 0.0f;
							}
							_touchSpeed = (0.8f * _touchSpeed) + (0.2f * std::abs(delta) / TouchKineticDivider);
						}
						_touchLast = touchMove;
					}
				}
				break;
			}
			case TouchEventType::Up: {
				bool alreadyMoved = (_touchStart == Vector2f::Zero || (_touchStart - _touchLast).SqrLength() > 100 || _touchTime > FrameTimer::FramesPerSecond);
				_touchStart = Vector2f::Zero;
				if (alreadyMoved) {
					return;
				}

				if (_touchLast.Y > 120.0f) {
					// Approximation of scroll offsets, needs to be changed when header is changed
					if (_scrollOffset > 40.0f && _scrollOffset < 400.0f) {
						if (theApplication().OpenUrl("https://deat.tk/jazz2/"_s)) {
							_root->PlaySfx("MenuSelect"_s, 0.5f);
						}
					}
				}
				break;