WorldState.cpp

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#include "WorldState.h"
 
namespace Divide::goap
{
 
WorldState::WorldState(const string& name)  noexcept 
    : priority_( 0 )
    , name_( name )
{
    //nop
}
 
void WorldState::setVariable(const I32 var_id, const bool value) 
{
    vars_[var_id] = value;
}
 
bool WorldState::getVariable(const I32 var_id) const {
    return vars_.at(var_id);
}
 
 
bool WorldState::operator==(const WorldState& other) const {
    return (vars_ == other.vars_);
}
 
bool WorldState::meetsGoal(const WorldState& goal_state) const
{
    for (const auto& kv : goal_state.vars_) {
        try {
            if (vars_.at(kv.first) != kv.second) {
                return false;
            }
        }
        catch (const std::out_of_range&) {
            return false;
        }
    }
    return true;
}
 
I32 WorldState::distanceTo(const WorldState& goal_state) const
{
    I32 result = 0;
 
    for (const auto& kv : goal_state.vars_) {
        auto itr = vars_.find(kv.first);
        if (itr == end(vars_) || itr->second != kv.second) {
            ++result;
        }
    }
 
    return result;
}
 
string WorldState::toString() const
{
    string ret = "WorldState { ";
    for ( const auto& kv : vars_ )
    {
        ret.append(kv.second ? "TRUE " : "FALSE ");
    }
    ret.append("}");
 
    return ret;
}
 
} //namespace Divide::goap