Help new library problems

Development Libraries
7

I copied your .h, .cpp, and .pde files into the 0022 version of the IDE.

You have more errors than you listed.

    void gain(int setGain)

Needs a ; at the end;

void ERER::emitterN(int emitterNegative){
 pinMode(emitterN, OUTPUT);
 _irEmitterP = emitterNegative;
}

In the pinMode statement, emitterN is the name of the function, not the pin to be set.

void init(int emitter) {

What happened to the ERER::?

Your class is missing a constructor.

void ERER::distanceCheck() { 
  if(currentInit == 0){if(digitalRead(_irReceiverN) == LOW) ERER::ambientCheck();}
  if(currentInit == 1){if(digitalRead(_irReceiverN) == LOW) ERER::emissionCheck();}
}

Get rid of the scope resolution operator. Again.

sensore1.receiverN(2);
sensore1.receiverP(5);
sensore1.emitterP(13);
sensore1.gain(4);
sensore1.maxRangeValue(666666);
sensore1.maxRange(2000);

Executable code needs to be inside a function.