Program Listing for File KPStateMachine.cpp

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#include <KPState.hpp>
#include <KPStateMachine.hpp>

void KPStateMachine::setup() {
    // do nothing
}

void KPStateMachine::update() {
    if (!currentState) {
        return;
    }

    if (!currentState->didEnter) {
        currentState->didEnter = true;
        currentState->enter(*this);
    }

    for (size_t i = 0; i < currentState->numberOfSchedules; i++) {
        auto & s = currentState->schedules[i];
        if (s.activated || !s.condition()) {
            continue;
        }

        s.activated = true;
        s.callback();
    }

    currentState->update(*this);
}

void KPStateMachine::next(int code) const {
    auto entry = mapNameToMiddleware.find(currentState->name);
    if (entry != mapNameToMiddleware.end()) {
        entry->second(code);
    }
}

void KPStateMachine::restart() {
    transitionTo(currentState ? currentState->name : nullptr);
}

void KPStateMachine::transitionTo(const char * name) {
    // Leave the current state
    if (currentState) {
        currentState->leave(*this);
    }

    // Move to new state
    auto next = mapNameToState[name];
    if (next) {
        println("Begin ", next->getName());
        currentState = next;
        currentState->begin();
        updateObservers(&KPStateMachineObserver::stateDidBegin, currentState);
    }
}