/*
network.h file... for everything what have to do with the network stuff 
*/

#include <SDL.h>

#ifndef _NETWORK_H_
#define _NETWORK_H_

#define MAX_UDPDATA 1024
#define PKG_RESENDCACHE_SIZE (64*1024)
#define PKG_IN_INDEX_NUM 256
#define RESENDCACHE_TIMEOUT 400
#define RESENDCACHE_TIMEOUT_MENU 3000
#define RESENDCACHE_RETRY 10
#define DOWNLOAD_TIMEOUT 2000
#define DYN_PKG_MAX_MISSING 4
#define DYN_PKG_MIN_MISSING 1
#define PKG_SENDSETOPT 2

#define GT_MP_PTPM (bman.multitype == MT_ptpm && bman.gametype == GT_multi)
#define GT_MP_PTPS (bman.multitype == MT_ptps && bman.gametype == GT_multi)
#define GT_MP_PTP ((bman.multitype ==  MT_ptps || bman.multitype == MT_ptpm) && bman.gametype == GT_multi)

#define GS_WAITRUNNING (bman.state == GS_wait || bman.state == GS_ready || bman.state == GS_running)

#define NET_CANSEND(__pl) (( __pl == 0 || GT_MP_PTPM || (bman.players[__pl].net.flags & NETF_firewall) == 0))

/* Little / Big Endian Convert */
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
	#define NTOH16(__i) s_swap16(__i)
	#define HTON16(__i) s_swap16(__i)
	#define NTOH32(__i) s_swap32(__i)
	#define HTON32(__i) s_swap32(__i)
#else
    /* intel system */
	#define NTOH16(__i) (__i)
	#define HTON16(__i) (__i)
	#define NTOH32(__i) (__i)
	#define HTON32(__i) (__i)
#endif

/* converting of float to int and other direction */
#define FTOI16(__x) ((Sint16)((float)(__x * 256.0f)))
#define I16TOF(__x) (((float)__x) / 256.0f)

#ifdef _WIN32
#define _sockaddr sockaddr
#else
#define _sockaddr sockaddr_in6
#endif

struct __net_addr {  // this holds the network data
	char host[LEN_SERVERNAME];
	char port[LEN_PORT];
	struct _sockaddr sAddr;
	signed char pl_nr; // pl_nr so we know it in the pkgcahce.
} typedef _net_addr;


struct __net_pkgopt { /* this will hold all needed data for the packet
						timeout function */
    signed char send_to;  // sending packet data (playermove) on 0 it will be send
    signed char send_set; // start value for the packet data option (dynamic set)
	int to_2sec;		// how many unreached packets was send
	Uint32 to_timestamp;
} typedef _net_pkgopt;

struct __net_player {
	_net_addr addr;		// holds the address
	int pingreq;   // just to send a ping and to save the number in here
	int pingack;   // just to wait for an ping reply.. it will show up here
	Uint32 timestamp;  // time of the last incoming package
	signed char net_istep;
	signed char net_status;
	unsigned char flags;  // keep some flags.. like NETF_firewall
	_net_pkgopt pkgopt;  // packet and network controll data
} typedef _net_player;	


// network menu
extern void netmenu();
extern void networkmenu_joingame ();
extern void networkmenu_options ();
extern void join_multiplayer_game ();
extern void host_multiplayer_game ();
extern void multiplayer_firstrun ();

// network.c
extern int network_server_port (char *server, char *host, int hostlen, char *port, int portlen);
extern void network_shutdown ();
extern int network_init ();
extern int network_loop ();
extern void net_change_playerid (int pl_nr, unsigned char senddata);
extern void net_new_game ();
extern void net_transmit_gamedata ();
extern void net_game_send_player (int p_nr);
extern void net_game_send_playermove (int p_nr, int mustsend);
extern void net_game_send_bomb (int p, int b);
extern void net_game_send_field (int x, int y);
extern void net_game_send_special (int pl_nr, int ex_nr);
extern void net_game_fillsockaddr ();
extern void net_game_send_ill (int p_nr);
extern void net_delplayer (int pl_nr);
extern void draw_netupdatestate ();
extern void net_send_servermode ();
extern void net_send_players ();
extern int net_check_timeout (int pl_nr);
extern void net_dyn_pkgoption ();
extern void net_send_chat (char *text, signed char notigamesrv);
extern void net_send_mapinfo ();

// multiwait.c
extern void wait_for_players ();
extern void mw_init ();
extern void mw_shutdown ();
extern void mw_draw_gfxselect (int selgfx);
extern void mw_draw_status ();
extern void mw_wait_for_connect ();
extern void mw_draw_chat ();

// udp.c
extern char *dns_net_getip (char *host);
extern int dns_filladdr (char *host, int hostlen, char *port, int portlen, int ai_family, struct _sockaddr *sAddr);
extern int udp_get (int sock, char *text, int len, struct _sockaddr *sAddr, int ai_family);
extern int udp_server (char *port, int ai_family);
extern void udp_send (int sock, char *text, int len, struct _sockaddr *sAddr, int ai_family);
extern void udp_close (int sock);

#endif