Hello Everybody.
I saw people speaking bad about the tools... alike they are unreliable...  

You should be very careful to what you say in programming. It says a lot about your background.
hacker's manifesto 
"I don't care who/how you are, I care to what you say."First of all, learn C programming and Then C++ then you'll be very comfortable to use the SDK.
I personnaly use 
Sublime Text 3 to do all my coding. I never been comfortable using Integrated Development Editor...
SublimeText is free to use in lifetime but it is a shareware... it pop up shitty window to buy license every use of ST's features. You can crack it easily if it's too disturbing... 
Here are my building tools that I integrated myself to Sublime Text's building(popen) system.
requirement: You need append full path to ascompiler to your system PATH environment to be able to use it.
like so.
;C:\Users\UserName\Desktop\r513.sdk\Tools\ASCompilerdefinition: This trigger ascompiler(using defines from server/mapper/client) on the actual file you working on. It permits to track development error(s).
filename: C:\Users\UserName\AppData\Roaming\Sublime Text 3\Packages\User\AsServer.sublime-build
{
        "shell_cmd": "ASCompiler.exe $file"
}
filename: C:\Users\UserName\AppData\Roaming\Sublime Text 3\Packages\User\AsMapper.sublime-build
{
	"shell_cmd": "ASCompiler.exe $file -mapper"
}
filename: C:\Users\UserName\AppData\Roaming\Sublime Text 3\Packages\User\AsClient.sublime-build
{
	"shell_cmd": "ASCompiler.exe $file -client"
}
You trigger them by selecting the one you want into build system option from SublimeText3 and using ctrl+b
it returns something like this in a pane bottom the editor:
Compiling C:\Users\UserName\Desktop\r513.sdk\Server\scripts\guard.fos ...
Success.
Time: 453.552 ms.
[Finished in 0.6s]
To exclude compiled files into the sublime text's file browser.
filename: C:\Users\UserName\AppData\Roaming\Sublime Text 3\Packages\User\Preferences.sublime-settings
{      
        "file_exclude_patterns":
	[
		"*.fosb",
		"*.fosp"
	]
}
To have syntax color with *.fos scripts.
filename:C:\Users\UserName\AppData\Roaming\Sublime Text 3\Packages\User\C++.sublime-settings
{
	"extensions":
	[
		"cpp",
		"cc",
		"cxx",
		"c++",
		"h",
		"hpp",
		"hxx",
		"h++",
		"inl",
		"ipp",
		"fos"
	]
}
Happy hacking.