tb_msg.h

// ================================================================================
// ==      This file is a part of Turbo Badger. (C) 2011-2014, Emil Segerås      ==
// ==                     See tb_core.h for more information.                    ==
// ================================================================================

#ifndef TB_MSG_H
#define TB_MSG_H

#include "tb_core.h"
#include "tb_linklist.h"
#include "tb_value.h"
#include "tb_object.h"
#include "tb_id.h"

namespace tb {

class TBMessageHandler;

#define TB_NOT_SOON 0xffffffff

class TBMessageData : public TBTypedObject
{
public:
    TBMessageData() {}
    TBMessageData(int v1, int v2) : v1(v1), v2(v2) {}
    virtual ~TBMessageData() {}
public:
    TBValue v1; 
    TBValue v2; 
    TBID id1;   
    TBID id2;   
};

class TBMessageLink : public TBLinkOf<TBMessageLink> { };

class TBMessage : public TBLinkOf<TBMessage>, public TBMessageLink
{
private:
    TBMessage(TBID message, TBMessageData *data, double fire_time_ms, TBMessageHandler *mh);
    ~TBMessage();

public:
    TBID message;           
    TBMessageData *data;    

    double GetFireTime() { return fire_time_ms; }

private:
    friend class TBMessageHandler;
    double fire_time_ms;
    TBMessageHandler *mh;
};

class TBMessageHandler
{
public:
    TBMessageHandler();
    virtual ~TBMessageHandler();

    bool PostMessageDelayed(TBID message, TBMessageData *data, uint32_t delay_in_ms);

    bool PostMessageOnTime(TBID message, TBMessageData *data, double fire_time);

    bool PostMessage(TBID message, TBMessageData *data);

    TBMessage *GetMessageByID(TBID message);

    void DeleteMessage(TBMessage *msg);

    void DeleteAllMessages();

    virtual void OnMessageReceived(TBMessage * /*msg*/) {}

    // == static methods to handle the queue of messages ====================================================

    static void ProcessMessages();

    static double GetNextMessageFireTime();
private:
    TBLinkListOf<TBMessage> m_messages;
};

} // namespace tb

#endif // TB_MSG_H