task.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef MUTATIONOFJB_TASK_H
#define MUTATIONOFJB_TASK_H

#include "common/scummsys.h"
#include "common/ptr.h"
#include "common/array.h"

namespace MutationOfJB {

class TaskManager;

class Task {
public:
    enum State {
        IDLE,
        RUNNING,
        FINISHED
    };

    Task() : _taskManager(nullptr), _state(IDLE) {}
    virtual ~Task() {}

    virtual void start() = 0;
    virtual void update() = 0;
    virtual void stop() {
        assert(false);    // Assert by default - stopping might not be safe for all tasks.
    }

    void setTaskManager(TaskManager *taskMan) {
        _taskManager = taskMan;
    }

    TaskManager *getTaskManager() {
        return _taskManager;
    }

    State getState() const {
        return _state;
    }

protected:
    void setState(State state) {
        _state = state;
    }

private:
    TaskManager *_taskManager;
    State _state;
};

typedef Common::SharedPtr<Task> TaskPtr;
typedef Common::Array<Common::SharedPtr<Task> > TaskPtrs;

}

#endif