What should be displayed Link to heading

The driver has a small set of analog inputs that can be used to provide feedback on the exact position of their inputs:

Accelerator pedal (0 to 1)
Brake pedal (0 to 1)
Clutch pedal (0 to 1)
Steering input (-1 to 1)

Accessing the data Link to heading

As I’ve shared in the project mentioned above, my application is based on the Walnut application framework which in itself is based on Dear ImGui The data is available via a public variable from the EASportsWRC class.

Initialization of the EASportsWRC object

1EASportsWRC l_EASportsWRC("127.0.0.1", 20782);

And access to the last values received via UDP link:

1VehicleSpeed = l_EASportsWRC.data.VehSpeed;

Creating the User Interface layout Link to heading

The widget is represented by the method DriverInputStatus() under the DataClientLayer class, the implementation looks like this:

 1void DataClientLayer::DriverInputsStatus()
 2{
 3	ImGui::Begin("Driver Inputs",&m_ShowDriverInputStatus);
 4	char buf[32];
 5
 6	//*******************************Throttle
 7	sprintf(buf, "%d/%d", (int)(l_EASportsWRC.data.throttle*100), 100);
 8	ImGui::ProgressBar(l_EASportsWRC.data.throttle, ImVec2(0.0f, 0.0f),buf);
 9	ImGui::SameLine(0.0f, ImGui::GetStyle().ItemInnerSpacing.x);
10	ImGui::Text("Accel");
11	//*******************************Brake
12	sprintf(buf, "%d/%d", (int)(l_EASportsWRC.data.brake * 100), 100);
13	ImGui::ProgressBar(l_EASportsWRC.data.brake, ImVec2(0.0f, 0.0f), buf);
14	ImGui::SameLine(0.0f, ImGui::GetStyle().ItemInnerSpacing.x);
15	ImGui::Text("Brake");
16	//*******************************Clutch
17	sprintf(buf, "%d/%d", (int)(l_EASportsWRC.data.clutch * 100), 100);
18	ImGui::ProgressBar(l_EASportsWRC.data.clutch, ImVec2(0.0f, 0.0f), buf);
19	ImGui::SameLine(0.0f, ImGui::GetStyle().ItemInnerSpacing.x);
20	ImGui::Text("Clutch");
21	//*******************************Handbrake
22	sprintf(buf, "%d/%d", (int)(l_EASportsWRC.data.handbrake * 100), 100);
23	ImGui::ProgressBar(l_EASportsWRC.data.handbrake, ImVec2(0.0f, 0.0f), buf);
24	ImGui::SameLine(0.0f, ImGui::GetStyle().ItemInnerSpacing.x);
25	ImGui::Text("Handbrake");
26	//*******************************Steering
27	sprintf(buf, "%d", (int)(l_EASportsWRC.data.stear));
28	ImGui::SliderFloat("Steering", &l_EASportsWRC.data.stear, -1.0f, 1.0f, "%.3f", 1);
29	
30	ImGui::End();
31}

And the UI output is:

The code snippets for throttle, brake, clutch and handbrake are all equal since they can all be analog inputs which range from a resting position (0) to a fully pressed position (1). The best way to represent this was by using ImGui::ProgressBar widget, which represents quite well this type of inputs

For steering the resting position is with the wheel aligned (0), and rotating fully to the right represents -1 and to the left 1 In this case, I felt that the best representation was a slider float ranging from -1 to 1, ImGui::SliderFloat is a good option for such a case

The window control can be achieved by providing a window state flag to the window, this is done by the class public flag `m_ShowDriverInputStatus’, which can then be used in other routine to change and to know the current status of this window

Everytime the UI is rendered, this flag is evaluated and the method is called.

1void DataClientLayer::OnUIRender()
2{
3    ...    
4    if (m_ShowDriverInputStatus) DriverInputsStatus();
5    ...
6}

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