SFML_test/StateMachine.cpp at master · Fralo/SFML_test · GitHub

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#include "StateMachine.hpp"

void StateMachine::AddState(StateRef newState, bool isReplacing) {
    this->_isAdding = true;
    this->_isReplacing = isReplacing;

    this->_newState = std::move( newState );
}

void StateMachine::RemoveState() {
    this->_isRemoving = true;
}

void StateMachine::ProcessStateChanges() {
    if(this->_isRemoving && !this->_states.empty() ) {
        this->_states.pop();

        if(!this->_states.empty()) {
            this->_states.top()->Resume();
        }
        this->_isRemoving = false;
    }

    if( this->_isAdding ) {
        if( !this->_states.empty() ) {
            if( this->_isReplacing ) {
                this->_states.pop();
            }
            else {
                this->_states.top()->Pause();
            }
        }

        this->_states.push(std::move( this->_newState));
        this->_states.top()->Init();
        this->_isAdding = false;
    }
}

StateRef& StateMachine::GetAtciveState() {
    return this->_states.top();
}