[TXNetwork] Второй пример: сетевая рисовалка.

//{===========================================================================
//}===========================================================================

#include "proto.h"

#define ANOTHER_PEER_IP "localhost" //Меняйте адрес тут :)

void NetPaint (TX_SOCKET paint_peer);

void CursorDraw (NetCursor_t cursor, COLORREF color);
void CursorMove (NetCursor_t* cursor);

int main()
{
txCreateWindow (1024, 768);

printf ("Searching for server...\n");

TX_SOCKET paint_peer = txCreateSocket (TX_CLIENT, ANOTHER_PEER_IP);

printf ("Start draw meow.\n");

if (txnAssert (paint_peer) == TXN_NOT_CREATED)
    {
    printf ("Can't find server on this IP address.\n");
    return -1;
    }

NetPaint (paint_peer);

return 0;
}

void NetPaint (TX_SOCKET paint_peer)
{
NetCursor_t cursor        = {100, 100, -1, -1, CUR_NOP};
NetCursor_t peer_cursor   = {100, 100, -1, -1, CUR_NOP};

while (!GetAsyncKeyState (VK_SPACE))
    {
    if (peer_cursor.action == CUR_EXIT)
        break;

    CursorDraw(cursor, TX_LIGHTGREEN);
    CursorDraw(peer_cursor, TX_LIGHTRED);

    CursorMove (&cursor);

    txRecvFrom  (paint_peer, &peer_cursor, sizeof(peer_cursor));
    txSendTo    (paint_peer, &cursor     , sizeof(cursor));

    txSleep (10);
    }

cursor.action = CUR_EXIT;
txSendTo    (paint_peer, &cursor, sizeof(cursor));
}

void CursorMove(NetCursor_t* cursor)
{
cursor->old_x = cursor->x;
cursor->old_y = cursor->y;

cursor->x = txMouseX();
cursor->y = txMouseY();

if (txMouseButtons() == 1)
    cursor->action = CUR_DRAW;
else
    cursor->action = CUR_NOP;
}

void CursorDraw (NetCursor_t cursor, COLORREF color)
{
txSetFillColor (color);
txSetColor     (color, 10);

if (cursor.action == 1)
    txLine (cursor.old_x, cursor.old_y, cursor.x, cursor.y);
}

//{===========================================================================
//}===========================================================================

#include "proto.h"

void NetPaint (TX_SOCKET paint_peer);

void CursorDraw (NetCursor_t cursor, COLORREF color);
void CursorMove (NetCursor_t* cursor);

int main()
{
txCreateWindow (1024, 768);

printf ("Searching for client...\n");

TX_SOCKET paint_peer = txCreateSocket (TX_SERVER, "");

printf ("Start draw meow.\n");

if (txnAssert (paint_peer) == TXN_NOT_CREATED)
    {
    printf ("Can't create socket. Maybe, port are busy.\n");
    return -1;
    }

NetPaint (paint_peer);

return 0;
}

void NetPaint (TX_SOCKET paint_peer)
{
NetCursor_t cursor        = {100, 100, -1, -1, CUR_NOP};
NetCursor_t peer_cursor   = {100, 100, -1, -1, CUR_NOP};

while (!GetAsyncKeyState (VK_ESCAPE))
    {
    if (peer_cursor.action == CUR_EXIT)
        break;

    CursorDraw(cursor, TX_LIGHTGREEN);
    CursorDraw(peer_cursor, TX_LIGHTRED);

    CursorMove (&cursor);

    txSendTo    (paint_peer, &cursor     , sizeof(cursor));
    txRecvFrom  (paint_peer, &peer_cursor, sizeof(peer_cursor));

    txSleep (10);
    }

cursor.action = CUR_EXIT;
txSendTo (paint_peer, &cursor, sizeof(cursor));
}

void CursorMove(NetCursor_t* cursor)
{
cursor->old_x = cursor->x;
cursor->old_y = cursor->y;

cursor->x = txMouseX();
cursor->y = txMouseY();

if (txMouseButtons() == 1)
    cursor->action = CUR_DRAW;
else
    cursor->action = CUR_NOP;
}

void CursorDraw (NetCursor_t cursor, COLORREF color)
{
txSetFillColor (color);
txSetColor     (color, 10);

if (cursor.action == CUR_DRAW)
    txLine (cursor.old_x, cursor.old_y, cursor.x, cursor.y);
}

//{===========================================================================
//}===========================================================================
// proto.h

// 1. server -> client: NetCursor_t
// 2. server <- client: NetCursor_t

#include "TXNetwork.h"
#include "TXLib.h"

enum CursorActions
    {
    CUR_NOP = 0,
    CUR_DRAW = 1,
    CUR_EXIT = -1
    };

struct NetCursor_t
    {
    int     x,     y;
    int old_x, old_y;
    CursorActions action;
    };