examples: if

Text// Check if next square is empty before stepping:

void go()

{

if(Tracer.seenowall())

{

// do this only if next square is clear

Tracer.step();

}

}

 

or...

void go()

{

if(Tracer.seenowall())

{

// do this only if next square is clear

Tracer.mark(4);

Tracer.step();

Tracer.say("OK");

}

}