#Unity Arduino C# and Unamanged C++ structs

1 messages · Page 1 of 1 (latest)

tough steeple
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Ayo @thorny dawn

thorny dawn
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ye

tough steeple
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okay one sec I'm gonna open the project rq

tough steeple
# thorny dawn ye

here are two example structs in c

struct XYZ {
  float x;
  float y;
  float z;
};
struct Person {
  char name[25];
  int age;
  XYZ xyz;
};```
`Person person;`
# 
void writeDataToPort(){
  Serial.write((uint8_t*)&person, sizeof(person));
}```
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then in c# (can use any frame work for UI)

   int structSize = Marshal.SizeOf(typeof(Person));
   byte[] buffer = new byte[structSize];```
```cs
  if (serialPort.BytesToRead > 0 && readData)
  {
      byte[] incomingBytes = new byte[serialPort.BytesToRead];
      serialPort.Read(incomingBytes, 0, incomingBytes.Length);
      var student = ByteArrayToStruct<Person>(incomingBytes);
      Console.WriteLine($"byte data length: {incomingBytes.Length}");
              ```
thorny dawn
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ive never used a struct

tough steeple
thorny dawn
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what does the * and & do on this

image.png
thorny dawn
tough steeple
thorny dawn
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alr

tough steeple
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it just bunches data together mainly

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you used Vector3 in unity before no? or Quaternion

thorny dawn
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ye

tough steeple
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those are structs

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Vector3 is just a struct of 3 floats

thorny dawn
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ye i see

tough steeple
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the reason is the structs are usually value types and handled different , in many cases its more efficient. Ideally most of the data is kept on the stack

thorny dawn
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serialPort.Read(incomingBytes, 0, incomingBytes.Length);

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whats the point of that

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im assuming it outputs something because its not being saved in a variable

tough steeple
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basically this is replacement for reading strings

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instead of reading strings you are reading a specific bytes

thorny dawn
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i see

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and this is for wifi?

tough steeple
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this would work over serialport should be similiar, have to revis the old project its been a while

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the important part is processing that same data instead as string but raw data

thorny dawn
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yeah

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im still a little confused on what to use for bluetooth

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you most likely dont know any libraries

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but ive gotten over my immense stupidity now and without narrowing it down to maui itll probably be easier to find videos on

tough steeple
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like I said, bluetooth or not the framework is irrelevant lol this would work across all .net frameworks

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including Unity. Unity also uses .NET

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if it works on Unity it works for any other platform on .NET maui/blazor included or like i said console app

thorny dawn
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i could use unity to control the servos

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i could make the gui on unity not much point though over an actual ui

tough steeple
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yeah I mean if you write clean code it can work on all the platforms, if you want specific UI and look then yes thats where it makes a difference

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Blazor - Html/CSS
Unity - Custom Editor / GUI Tools / UI Toolkit
MAUI - Native platform controls / Pain in the ass XAML

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I like mostlly using Blazor cause I get to use JS and whatever library from that , as well as for CSS using things like Bootstrap or Tailwind

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if its simple usecase and don't need 3D rendering or interaction heavy like unity

thorny dawn
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dumb question but blazor still uses c# at its core and not js

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my js is lacking

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but hell yeah xaml is a pain

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i would much rather do html

tough steeple
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yes blazor uses something called Razor files that are HTML and C# combined basically

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but because blazor is web, you can also call JS functions if you wanted to

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or call C# functions from JS

thorny dawn
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definitely using that

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maui can die in a very bright fire

tough steeple
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yeah its really being slept on

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the easyness of c# but something as powerful as NextJS and other serverside frameworks.
Ofc Blazor can also use other frameworks for frontend like react or vue

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and blazor can also do Client side apps so you don't need a server side rendering or you can do both (this is something you learn about later)

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ServerSide is basically code that runs on another computer so people cannot decompile your code, this is especially important when handling back end stuff like Databases

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Client side rendering you have to download the HTML/JS/WebAssembly document first then your local pc runs it (which opens up people seeing your code)

thorny dawn
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but still works on its own

tough steeple
thorny dawn
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its still web dependant though

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so if you just wanted a standalone app without needing wifi

tough steeple
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internet has nothing to do with it though

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the only difference is you're running it in a browser vs not

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also there is MAUI Hybrid that embeds the Blazor parts in the WebView

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ultimately depends on what features you need and what you don't need

thorny dawn
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im somewhat confused im slow sometimes mb

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if it needs a browser surely that means not its own app?

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or is it its own browser..?

tough steeple
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yeah you need to distribute it like you would a regular website, but can be run locally too if you spin up a simple https server

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MAUI hybrid makes it so you have it already embedded in the Naitive App

thorny dawn
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isnt flutter also like maui hybrid

tough steeple
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I think so, I haven't used flutter

thorny dawn
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i should try doing something with servers or databases soon

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ive never used them because i dont a need for either

tough steeple
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they both do the same thing though they are both native apps

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so yeah its easier to just use the c# equivalent network

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albeit still infant

tough steeple
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but yeah any other service also can work like AWS or Azure etc.

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MongoDB is also nice

thorny dawn
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maybe ill try make a login / user system for something with a database

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i made a discord bot too which needs a server

tough steeple
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Unity has one with Unity Auth which is pretty nice

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I can login easy using Google account then access whatever from there

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ofc ontop of the regular username/pass login

thorny dawn
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what more is it other than meaning they cant use special characters and limiting the length etc any custom filtering / requirements

tough steeple
thorny dawn
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for authentication

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obviously the databasing stuff for accessing it