To make my code cleaner I tried to separate the code to different files, but I encountered a problem.

I got a file Defines.h 
[code]//////////////////////// Global variables ////////////////////////////////
unsigned int g_currentMillis = 0;

int g_stuckCount = 0;

ACTION g_currentACTION;


//////////////////////// Global classes //////////////////////////////////

// The ping uses the trigger pin to send the pulse and the echo pin to read
//PING(triggerPin, echoPin)
PING leftPing(4, 5);
PING rightPing(2, 3);

//Engine(rightEnginePin, leftEnginePin, rightEnginePinReverse, leftEnginePinReverse, speedRes)
Engine myEngines(10 ,6 ,11, 9, 20);[/code]

I declare in it my globals(among other things) but for some reasons it keeps saying for each global [quote]Functions.cpp.o : .cpp:9: multiple definition of `g_stuckCount'
ArduinoCreature.cpp.o : :(.bss.g_stuckCount+0x0): first defined here'[/quote] 
Obviously the header is surrounded with a #ifdef header guard but still the error.

I do include it twice, once in my .ino file and once in Functions.h file in my project, but even when I include it only in the header (which is included in the .ino file) it displays the problem.
It's also included in the .vsarduino.h file made by the visual micro plugin.

Thanks for any help :)

Okay thanks I'll ask on the arduino forum (and the files are not a library they are project specific they exist only within the sketch folder)

Thanks I made sure of it.
Eventually I just solved it using a "Defines" class with static variables.