C#•2y ago

✅ `unexpected symbol switch` error

hello everyone. i hope you all are doing great. i got a problem here. i am getting this error in unity:

91 Replies

alaa2008OP•2y ago

code: https://pastebin.com/fVNdhC1a

Pastebin

using System;using SBS.Math;using SBS.Racing;using UnityEngine;[Add...

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alaa2008OP•2y ago

its line 132 can someone please help me? thats the last error i need to fix for the project

cap5lut•2y ago

afaik unity onlky supports up to c# 7.3, switch expressions were introduced in c# 8

alaa2008OP•2y ago

oh i see. so how am i able to fix that switch error?

cap5lut•2y ago

aaah, nvm, scratch that, u just have to edit the project file and raise the language version to at least 8

cap5lut•2y ago

basically that

alaa2008OP•2y ago

do i just have to type: <LangVersion>7.3</LangVersion>?

cap5lut•2y ago

well, its needs to be at least 8.0 as mentioned already but yeah thats it

alaa2008OP•2y ago

ok thx bro

cap5lut•2y ago

9.0 seems to work as well (just checked one of my projects and since its autogenerated by unity i guess they support it, at least in version 2022)

alaa2008OP•2y ago

uh just a quick question: where exactly do i have to add the <LangVersion>7.3</LangVersion> ? i mean which line? if you know what i mean

ero•2y ago

doesn't matter, as long as it's in a <PropertyGroup> which itself is in a <Project>

alaa2008OP•2y ago

oh i see thx

alaa2008OP•2y ago

alaa2008OP•2y ago

so i have it here do i have to change the version to 8.0?

cap5lut•2y ago

u have already 11 in there, that means switch expression should actually work and the issue lies somewhere else but then i have no clue either

alaa2008OP•2y ago

hmm ok thx

cap5lut•2y ago

which vs version r u using?

alaa2008OP•2y ago

2022

cap5lut•2y ago

hmm

alaa2008OP•2y ago

i never figured it out i think this will be a challenge its just so hard to fix this does anyone has an idea how to fix that?

ero•2y ago

don't use switch expressions?

alaa2008OP•2y ago

yea but then i will get more errors

ero•2y ago

what? that doesn't make sense

alaa2008OP•2y ago

here removed the switch thing

alaa2008OP•2y ago

ero•2y ago

that's not how that works, no you need to convert the switch expression to some other way of returning the correct values

public static float GetTrasversalFromLane(int roadLane)
{
  switch (roadLane)
  {
    case 0: return -0.75f;
    case 1: return -0.25f;
    case 2: return 0.25f;
    case 3: return 0.75f;
    default: return 0f;
  }
}

public static float GetTrasversalFromLane(int roadLane)
{
  switch (roadLane)
  {
    case 0: return -0.75f;
    case 1: return -0.25f;
    case 2: return 0.25f;
    case 3: return 0.75f;
    default: return 0f;
  }
}

alaa2008OP•2y ago

oh i got it fixed thank you so much bro @just_ero ayo bro how about here?

alaa2008OP•2y ago

same error wait let me send full code

alaa2008OP•2y ago

https://pastebin.com/1ka8HXfH

Pastebin

using System;using System.Collections.Generic;using SBS.Core;using ...

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alaa2008OP•2y ago

line 50

cap5lut•2y ago

then ... use the same way to fix it and use a switch statement instead of a switch expression?

ero•2y ago

same way to fix it

alaa2008OP•2y ago

oh right thx guys does anyone know what wrong here is?

alaa2008OP•2y ago

alaa2008OP•2y ago

i already tried int hitInfo; i still get errors when i do that like this

alaa2008OP•2y ago

alaa2008OP•2y ago

code: https://pastebin.com/6vuhwtSv

Pastebin

using System.Collections.Generic;using SBS.Core;using SBS.Math;usin...

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alaa2008OP•2y ago

line 96

alaa2008OP•2y ago

i tried everything i could nothing worked

cap5lut•2y ago

did u change the csproj file?

alaa2008OP•2y ago

cap5lut•2y ago

then something is wrong with ur IDE as it thinks the project is in c# 6, not in c# 11 (thats probably also the reason why the switch expressions earlier didnt work)

alaa2008OP•2y ago

is it fixable? i mean the error

cap5lut•2y ago

i have no clue whats causing it so i dunno

alaa2008OP•2y ago

ok thx

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

alaa2008OP•2y ago

Couldn't fix it It is too hard But we are getting closer The token thing is finished Now there is another error Here it is the TrackBranch I will send the link of the full code later Since now i am not home Yea it's here

alaa2008OP•2y ago

https://pastebin.com/6vuhwtSv

Pastebin

using System.Collections.Generic;using SBS.Core;using SBS.Math;usin...

Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

alaa2008OP•2y ago

Line 98 hitInfo.token.TrackBranch guys guys i was stupid i opened the wrong .cs file with the langversion @cap5lut

MODiX•2y ago

Sorry @alaa2003 your message contained blocked content and has been removed!

alaa2008OP•2y ago

i was ret arded i opened the wrong project file this is the real one

alaa2008OP•2y ago

cap5lut•2y ago

well, then change the lang version

alaa2008OP•2y ago

to which version 11? or 8

cap5lut•2y ago

9 is max it seems currently for unity

alaa2008OP•2y ago

ok so like i said before i fixed the token thing

alaa2008OP•2y ago

alaa2008OP•2y ago

now there are 2 errors left for the TrackBranch its:

'object' does not contain a definition for 'TrackBranch' and no accessible extension method 'TrackBranch' accepting a first argument of type 'object' could be found (are you missing a using directive or an assembly reference?).

any idea how to fix this error?

cap5lut•2y ago

maybe TrackBranch trackBranch = (TrackBranch)hitInfo.token.TrackBranch;, but thats just guessing

alaa2008OP•2y ago

Ok thx bro

cap5lut•2y ago

note, that if hitInfo.token.TrackBranch is not a TrackBranch it will throw a cast exception at runtime

alaa2008OP•2y ago

It is (Maybe)

cap5lut•2y ago

most probably

alaa2008OP•2y ago

Okay bro I will try it out later Thx again man nope still got the error uh a question how do i have to fix the switch thing here? Yea give me a sec My internet is fucked A bit here

alaa2008OP•2y ago

cap5lut•2y ago

like the other times, just instead of returning u set the variable (_ is the default branch)

alaa2008OP•2y ago

ok thx bro so would it be switch (m_CarSettings.tractionAxle) ?

cap5lut•2y ago

yep

alaa2008OP•2y ago

I tried it out yesterday I got too many errors

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

alaa2008OP•2y ago

whats this? the get_length never got that error before what to do here? 'Extensions.length.get' : cannot explicitly call operator or accessor

cap5lut•2y ago

did u decompile some dll and try to make the resulting code working for ur game?

alaa2008OP•2y ago

oh its just a game called Motorway-Mayhem it was an old police game from my childhood, but since the UnityPlayer got removed from browsers, i tried to make a standalone version of the game since some people asked me i decompiled them with ilSpy or i just don't understand your question xd

cap5lut•2y ago

nah, u did answer my question

alaa2008OP•2y ago

oh i see

cap5lut•2y ago

but i doubt u r allowed to do this, so its against this servers rules and against discord's ToS, so i stop providing help here

alaa2008OP•2y ago

oh ok just a quick question. why is it not allowed to decompile .dll files?

cap5lut•2y ago

In the U.S., for example, copyright laws don't fully restrict decompilation. The Digital Millennium Copyright Act (DMCA) allows reverse-engineering, if a person has lawfully obtained a right to use a copy of a computer program, only to identify and analyze its elements to achieve interoperability with other programs. However, decompiling a program to circumvent a system that controls access to copyrighted work is considered illegal. Similarly, the EU also allows decompilation for some uses, including interoperability.

u dont only want to interop, but u want to break copyrights and share it

alaa2008OP•2y ago

oh i see so i live in germany is it still not allowed? in EU.

cap5lut•2y ago

yep, its not allowed here either (im from germany as well)

alaa2008OP•2y ago

oh i see hmm thats sad ok then thx again also you won't help me even if i don't upload the game to public? because i am the only one who will play it my friends also know the game and who the developer is i will send it to them and i will also credit the original creator they will keep it private but that doesn't change anything right?

cap5lut•2y ago

yeah, that doesnt change anything if u sit in the cinema recording what ya watch and give it ur friends and say "hey thats from pixar, dont give it to others" thats still piracy

alaa2008OP•2y ago

yea ok then got it

cap5lut•2y ago

well, as we cant help u further can u please $close this thread?

MODiX•2y ago

Use the /close command to mark a forum thread as answered

alaa2008OP•2y ago

yea

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Programming

✅ `unexpected symbol switch` error