IfFoodAhead.h

#include "AntEvalOp.h"
 
 
class IfFoodAhead : public Tree::Primitives::Primitive
{
public:
    IfFoodAhead()
    {
        nArguments_ = 2;
        name_ = "ifa";
    }
 
    void execute(void* evalOp, Tree::Tree& tree)
    {
        // get pointer to simulator from the context
        AntEvalOp* ant = (AntEvalOp*) state_->getContext()->environment;
 
        // query the simulator: are we facing food?
        if(ant->facingFood()) {
            // if yes, execute the first subtree
            getNextArgument(evalOp, tree);
            // and skip the second one
            skipNextArgument(tree);
        } else {
            // otherwise...
            skipNextArgument(tree);
            getNextArgument(evalOp, tree);
        }
    }
 
    ~IfFoodAhead()
    {   }
};