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ec_client.c

/* copyright (c) 2007 magnus auvinen, see licence.txt for more info */

#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>

#include <base/system.h>
#include <engine/e_engine.h>
#include <engine/e_client_interface.h>

#include <engine/e_protocol.h>
#include <engine/e_snapshot.h>
#include <engine/e_compression.h>
#include <engine/e_network.h>
#include <engine/e_config.h>
#include <engine/e_packer.h>
#include <engine/e_memheap.h>
#include <engine/e_datafile.h>
#include <engine/e_console.h>
#include <engine/e_ringbuffer.h>

#include <engine/e_huffman.h>

#include <engine/e_demorec.h>

#include <mastersrv/mastersrv.h>
#include <versionsrv/versionsrv.h>

const int prediction_margin = 1000/50/2; /* magic network prediction value */

/*
      Server Time
      Client Mirror Time
      Client Predicted Time
      
      Snapshot Latency
            Downstream latency
      
      Prediction Latency
            Upstream latency
*/

/* network client, must be accessible from other parts like the server browser */
NETCLIENT *net;

/* TODO: ugly, fix me */
extern void client_serverbrowse_set(NETADDR *addr, int request, int token, SERVER_INFO *info);
extern void client_serverbrowse_save();

static unsigned snapshot_parts;
static int64 local_start_time;

static int debug_font;
static float frametime = 0.0001f;
static float frametime_low = 1.0f;
static float frametime_high = 0.0f;
static int frames = 0;
static NETADDR server_address;
static int window_must_refocus = 0;
static int snapcrcerrors = 0;

static int ack_game_tick = -1;
static int current_recv_tick = 0;
static int rcon_authed = 0;

/* version-checking */
static char versionstr[10] = "0";

/* pinging */
static int64 ping_start_time = 0;

/* */
static char current_map[256] = {0};
static int current_map_crc = 0;

/* */
static char cmd_connect[256] = {0};

/* map download */
static char mapdownload_filename[256] = {0};
static char mapdownload_name[256] = {0};
static IOHANDLE mapdownload_file = 0;
static int mapdownload_chunk = 0;
static int mapdownload_crc = 0;
static int mapdownload_amount = -1;
static int mapdownload_totalsize = -1;

/* */
static SERVER_INFO current_server_info = {0};
static int64 current_server_info_requesttime = -1; /* >= 0 should request, == -1 got info */

/* current time */
static int current_tick = 0;
static float intratick = 0;
static float ticktime = 0;
static int prev_tick = 0;

/* */
/*static int predictiontime_pingspikecounter = 0;
static int gametime_pingspikecounter = 0;*/

/* predicted time */
static int current_predtick = 0;
static float predintratick = 0;
static int last_input_timeleft = 0;

static struct /* TODO: handle input better */
{
      int data[MAX_INPUT_SIZE]; /* the input data */
      int tick; /* the tick that the input is for */
      int64 predicted_time; /* prediction latency when we sent this input */
      int64 time;
} inputs[200];
static int current_input = 0;

enum
{
      GRAPH_MAX=128
};

typedef struct
{
      float min, max;
      float values[GRAPH_MAX];
      float colors[GRAPH_MAX][3];
      int index;
} GRAPH;

static void graph_init(GRAPH *g, float min, float max)
{
      g->min = min;
      g->max = max;
      g->index = 0;
}

static void graph_scale_max(GRAPH *g)
{
      int i = 0;
      g->max = 0;
      for(i = 0; i < GRAPH_MAX; i++)
      {
            if(g->values[i] > g->max)
                  g->max = g->values[i];
      }
}

static void graph_scale_min(GRAPH *g)
{
      int i = 0;
      g->min = g->max;
      for(i = 0; i < GRAPH_MAX; i++)
      {
            if(g->values[i] < g->min)
                  g->min = g->values[i];
      }
}

static void graph_add(GRAPH *graph, float v, float r, float g, float b)
{
      graph->index = (graph->index+1)&(GRAPH_MAX-1);
      graph->values[graph->index] = v;
      graph->colors[graph->index][0] = r;
      graph->colors[graph->index][1] = g;
      graph->colors[graph->index][2] = b;
}

static void graph_render(GRAPH *g, float x, float y, float w, float h, const char *description)
{
      char buf[32];
      int i;

      gfx_blend_normal();

      
      gfx_texture_set(-1);
      
      gfx_quads_begin();
      gfx_setcolor(0, 0, 0, 0.75f);
      gfx_quads_drawTL(x, y, w, h);
      gfx_quads_end();
            
      gfx_lines_begin();
      gfx_setcolor(0.95f, 0.95f, 0.95f, 1.00f);
      gfx_lines_draw(x, y+h/2, x+w, y+h/2);
      gfx_setcolor(0.5f, 0.5f, 0.5f, 0.75f);
      gfx_lines_draw(x, y+(h*3)/4, x+w, y+(h*3)/4);
      gfx_lines_draw(x, y+h/4, x+w, y+h/4);
      for(i = 1; i < GRAPH_MAX; i++)
      {
            float a0 = (i-1)/(float)GRAPH_MAX;
            float a1 = i/(float)GRAPH_MAX;
            int i0 = (g->index+i-1)&(GRAPH_MAX-1);
            int i1 = (g->index+i)&(GRAPH_MAX-1);
            
            float v0 = (g->values[i0]-g->min) / (g->max-g->min);
            float v1 = (g->values[i1]-g->min) / (g->max-g->min);
            
            gfx_setcolorvertex(0, g->colors[i0][0], g->colors[i0][1], g->colors[i0][2], 0.75f);
            gfx_setcolorvertex(1, g->colors[i1][0], g->colors[i1][1], g->colors[i1][2], 0.75f);
            gfx_lines_draw(x+a0*w, y+h-v0*h, x+a1*w, y+h-v1*h);

      }
      gfx_lines_end();
      

      gfx_texture_set(debug_font);  
      gfx_quads_text(x+2, y+h-16, 16, 1,1,1,1, description);

      str_format(buf, sizeof(buf), "%.2f", g->max);
      gfx_quads_text(x+w-8*strlen(buf)-8, y+2, 16, 1,1,1,1, buf);
      
      str_format(buf, sizeof(buf), "%.2f", g->min);
      gfx_quads_text(x+w-8*strlen(buf)-8, y+h-16, 16, 1,1,1,1, buf);
      
}

typedef struct
{
      int64 snap;
      int64 current;
      int64 target;
      
      int64 rlast;
      int64 tlast;
      GRAPH graph;
      
      int spikecounter;
      
      float adjustspeed[2]; /* 0 = down, 1 = up */
} SMOOTHTIME;

static void st_init(SMOOTHTIME *st, int64 target)
{
      st->snap = time_get();
      st->current = target;
      st->target = target;
      st->adjustspeed[0] = 0.3f;
      st->adjustspeed[1] = 0.3f;
      graph_init(&st->graph, 0.0f, 0.5f);
}

static int64 st_get(SMOOTHTIME *st, int64 now)
{
      float adjust_speed, a;
      int64 c = st->current + (now - st->snap);
      int64 t = st->target + (now - st->snap);
      int64 r;
      
      /* it's faster to adjust upward instead of downward */
      /* we might need to adjust these abit */

      adjust_speed = st->adjustspeed[0];
      if(t > c)
            adjust_speed = st->adjustspeed[1];
      
      a = ((now-st->snap)/(float)time_freq()) * adjust_speed;
      if(a > 1.0f)
            a = 1.0f;
            
      r = c + (int64)((t-c)*a);
      
      graph_add(&st->graph, a+0.5f,1,1,1);
      
      return r;
}

static void st_update_int(SMOOTHTIME *st, int64 target)
{
      int64 now = time_get();
      st->current = st_get(st, now);
      st->snap = now;
      st->target = target;
}

static void st_update(SMOOTHTIME *st, GRAPH *graph, int64 target, int time_left, int adjust_direction)
{
      int update_timer = 1;
      
      if(time_left < 0)
      {
            int is_spike = 0;
            if(time_left < -50)
            {
                  is_spike = 1;
                  
                  st->spikecounter += 5;
                  if(st->spikecounter > 50)
                        st->spikecounter = 50;
            }
            
            if(is_spike && st->spikecounter < 15)
            {
                  /* ignore this ping spike */
                  update_timer = 0;
                  graph_add(graph, time_left, 1,1,0);
            }
            else
            {
                  graph_add(graph, time_left, 1,0,0);
                  if(st->adjustspeed[adjust_direction] < 30.0f)
                        st->adjustspeed[adjust_direction] *= 2.0f;
            }
      }
      else
      {
            if(st->spikecounter)
                  st->spikecounter--;
                  
            graph_add(graph, time_left, 0,1,0);
            
            st->adjustspeed[adjust_direction] *= 0.95f;
            if(st->adjustspeed[adjust_direction] < 2.0f)
                  st->adjustspeed[adjust_direction] = 2.0f;
      }
      
      last_input_timeleft = time_left;
      
      if(update_timer)
            st_update_int(st, target);
}

static SMOOTHTIME game_time;
static SMOOTHTIME predicted_time;

/* graphs */
static GRAPH inputtime_margin_graph;
static GRAPH gametime_margin_graph;
static GRAPH fps_graph;

/* -- snapshot handling --- */
enum
{
      NUM_SNAPSHOT_TYPES=2
};

/* the game snapshots are modifiable by the game */
SNAPSTORAGE snapshot_storage;
static SNAPSTORAGE_HOLDER *snapshots[NUM_SNAPSHOT_TYPES];

static int recived_snapshots = 0;
static char snapshot_incomming_data[MAX_SNAPSHOT_SIZE];

static SNAPSTORAGE_HOLDER demorec_snapshotholders[NUM_SNAPSHOT_TYPES];
static char *demorec_snapshotdata[NUM_SNAPSHOT_TYPES][2][MAX_SNAPSHOT_SIZE];

/* --- */

void *snap_get_item(int snapid, int index, SNAP_ITEM *item)
{
      SNAPSHOT_ITEM *i;
      dbg_assert(snapid >= 0 && snapid < NUM_SNAPSHOT_TYPES, "invalid snapid");
      i = snapshot_get_item(snapshots[snapid]->alt_snap, index);
      item->datasize = snapshot_get_item_datasize(snapshots[snapid]->alt_snap, index);
      item->type = snapitem_type(i);
      item->id = snapitem_id(i);
      return (void *)snapitem_data(i);
}

void snap_invalidate_item(int snapid, int index)
{
      SNAPSHOT_ITEM *i;
      dbg_assert(snapid >= 0 && snapid < NUM_SNAPSHOT_TYPES, "invalid snapid");
      i = snapshot_get_item(snapshots[snapid]->alt_snap, index);
      if(i)
      {
            if((char *)i < (char *)snapshots[snapid]->alt_snap || (char *)i > (char *)snapshots[snapid]->alt_snap + snapshots[snapid]->snap_size)
                  dbg_msg("ASDFASDFASdf", "ASDFASDFASDF");
            if((char *)i >= (char *)snapshots[snapid]->snap && (char *)i < (char *)snapshots[snapid]->snap + snapshots[snapid]->snap_size)
                  dbg_msg("ASDFASDFASdf", "ASDFASDFASDF");
            i->type_and_id = -1;
      }
}

void *snap_find_item(int snapid, int type, int id)
{
      /* TODO: linear search. should be fixed. */
      int i;
      
      if(!snapshots[snapid])
            return 0x0;
      
      for(i = 0; i < snapshots[snapid]->snap->num_items; i++)
      {
            SNAPSHOT_ITEM *itm = snapshot_get_item(snapshots[snapid]->alt_snap, i);
            if(snapitem_type(itm) == type && snapitem_id(itm) == id)
                  return (void *)snapitem_data(itm);
      }
      return 0x0;
}

int snap_num_items(int snapid)
{
      dbg_assert(snapid >= 0 && snapid < NUM_SNAPSHOT_TYPES, "invalid snapid");
      if(!snapshots[snapid])
            return 0;
      return snapshots[snapid]->snap->num_items;
}

/* ------ time functions ------ */
float client_intratick() { return intratick; }
float client_predintratick() { return predintratick; }
float client_ticktime() { return ticktime; }
int client_tick() { return current_tick; }
int client_prevtick() { return prev_tick; }
int client_predtick() { return current_predtick; }
int client_tickspeed() { return SERVER_TICK_SPEED; }
float client_frametime() { return frametime; }
float client_localtime() { return (time_get()-local_start_time)/(float)(time_freq()); }

/* ----- send functions ----- */
int client_send_msg()
{
      const MSG_INFO *info = msg_get_info();
      NETCHUNK packet;
      
      if(!info)
            return -1;
            
      mem_zero(&packet, sizeof(NETCHUNK));
      
      packet.client_id = 0;
      packet.data = info->data;
      packet.data_size = info->size;

      if(info->flags&MSGFLAG_VITAL)
            packet.flags |= NETSENDFLAG_VITAL;
      if(info->flags&MSGFLAG_FLUSH)
            packet.flags |= NETSENDFLAG_FLUSH;
            
      if(info->flags&MSGFLAG_RECORD)
      {
            if(demorec_isrecording())
                  demorec_record_message(packet.data, packet.data_size);
      }

      if(!(info->flags&MSGFLAG_NOSEND))
            netclient_send(net, &packet);
      return 0;
}

static void client_send_info()
{
      msg_pack_start_system(NETMSG_INFO, MSGFLAG_VITAL|MSGFLAG_FLUSH);
      msg_pack_string(modc_net_version(), 128);
      msg_pack_string(config.player_name, 128);
      msg_pack_string(config.clan_name, 128);
      msg_pack_string(config.password, 128);
      msg_pack_end();
      client_send_msg();
}


static void client_send_entergame()
{
      msg_pack_start_system(NETMSG_ENTERGAME, MSGFLAG_VITAL|MSGFLAG_FLUSH);
      msg_pack_end();
      client_send_msg();
}

static void client_send_ready()
{
      msg_pack_start_system(NETMSG_READY, MSGFLAG_VITAL|MSGFLAG_FLUSH);
      msg_pack_end();
      client_send_msg();
}

int client_rcon_authed()
{
      return rcon_authed;
}

void client_rcon_auth(const char *name, const char *password)
{
      msg_pack_start_system(NETMSG_RCON_AUTH, MSGFLAG_VITAL);
      msg_pack_string(name, 32);
      msg_pack_string(password, 32);
      msg_pack_end();
      client_send_msg();
}

void client_rcon(const char *cmd)
{
      msg_pack_start_system(NETMSG_RCON_CMD, MSGFLAG_VITAL);
      msg_pack_string(cmd, 256);
      msg_pack_end();
      client_send_msg();
}

int client_connection_problems()
{
      return netclient_gotproblems(net);
}

void client_direct_input(int *input, int size)
{
      int i;
      msg_pack_start_system(NETMSG_INPUT, 0);
      msg_pack_int(ack_game_tick);
      msg_pack_int(current_predtick);
      msg_pack_int(size);
      
      for(i = 0; i < size/4; i++)
            msg_pack_int(input[i]); 
            
      msg_pack_end();
      client_send_msg();
}


static void client_send_input()
{
      int64 now = time_get(); 
      int i, size;

      if(current_predtick <= 0)
            return;
       
      /* fetch input */
      size = modc_snap_input(inputs[current_input].data);
      
      if(!size)
            return;
      
      /* pack input */
      msg_pack_start_system(NETMSG_INPUT, MSGFLAG_FLUSH);
      msg_pack_int(ack_game_tick);
      msg_pack_int(current_predtick);
      msg_pack_int(size);

      inputs[current_input].tick = current_predtick;
      inputs[current_input].predicted_time = st_get(&predicted_time, now);
      inputs[current_input].time = now;

      /* pack it */     
      for(i = 0; i < size/4; i++)
            msg_pack_int(inputs[current_input].data[i]);
      
      current_input++;
      current_input%=200;
      
      msg_pack_end();
      client_send_msg();
}

const char *client_latestversion()
{
      return versionstr;
}

/* TODO: OPT: do this alot smarter! */
int *client_get_input(int tick)
{
      int i;
      int best = -1;
      for(i = 0; i < 200; i++)
      {
            if(inputs[i].tick <= tick && (best == -1 || inputs[best].tick < inputs[i].tick))
                  best = i;
      }
      
      if(best != -1)
            return (int *)inputs[best].data;
      return 0;
}

/* ------ state handling ----- */
static int state = CLIENTSTATE_OFFLINE;
int client_state() { return state; }
static void client_set_state(int s)
{
      int old = state;
      if(config.debug)
            dbg_msg("client", "state change. last=%d current=%d", state, s);
      state = s;
      if(old != s)
            modc_statechange(state, old);
}

/* called when the map is loaded and we should init for a new round */
static void client_on_enter_game()
{
      /* reset input */
      int i;
      for(i = 0; i < 200; i++)
            inputs[i].tick = -1;
      current_input = 0;

      /* reset snapshots */
      snapshots[SNAP_CURRENT] = 0;
      snapshots[SNAP_PREV] = 0;
      snapstorage_purge_all(&snapshot_storage);
      recived_snapshots = 0;
      snapshot_parts = 0;
      current_predtick = 0;
      current_recv_tick = 0;
}

void client_entergame()
{
      /* now we will wait for two snapshots */
      /* to finish the connection */
      client_send_entergame();
      client_on_enter_game();
      /*netclient_flush(net);*/
}

void client_connect(const char *server_address_str)
{
      char buf[512];
      const char *port_str = 0;
      int k;
      int port = 8303;
      
      client_disconnect();

      dbg_msg("client", "connecting to '%s'", server_address_str);

      //client_serverinfo_request();
      str_copy(buf, server_address_str, sizeof(buf));

      for(k = 0; buf[k]; k++)
      {
            if(buf[k] == ':')
            {
                  port_str = &(buf[k+1]);
                  buf[k] = 0;
                  break;
            }
      }
      
      if(port_str)
            port = atoi(port_str);
      
      /* TODO: IPv6 support */
      if(net_host_lookup(buf, &server_address, NETTYPE_IPV4) != 0)
            dbg_msg("client", "could not find the address of %s, connecting to localhost", buf);
      
      rcon_authed = 0;
      server_address.port = port;
      netclient_connect(net, &server_address);
      client_set_state(CLIENTSTATE_CONNECTING);
      
      graph_init(&inputtime_margin_graph, -150.0f, 150.0f);
      graph_init(&gametime_margin_graph, -150.0f, 150.0f);
}

void client_disconnect_with_reason(const char *reason)
{
      /* stop demo playback */
      demorec_playback_stop();
      
      /* */
      rcon_authed = 0;
      netclient_disconnect(net, reason);
      client_set_state(CLIENTSTATE_OFFLINE);
      map_unload();
      
      /* disable all downloads */
      mapdownload_chunk = 0;
      if(mapdownload_file)
            io_close(mapdownload_file);
      mapdownload_file = 0;
      mapdownload_crc = 0;
      mapdownload_totalsize = -1;
      mapdownload_amount = 0;

      /* clear the current server info */
      mem_zero(&current_server_info, sizeof(current_server_info));
      mem_zero(&server_address, sizeof(server_address));
      
      /* clear snapshots */
      snapshots[SNAP_CURRENT] = 0;
      snapshots[SNAP_PREV] = 0;
      recived_snapshots = 0;
}

void client_disconnect()
{
      client_disconnect_with_reason(0);
}


void client_serverinfo(SERVER_INFO *serverinfo)
{
      mem_copy(serverinfo, &current_server_info, sizeof(current_server_info));
}

void client_serverinfo_request()
{
      mem_zero(&current_server_info, sizeof(current_server_info));
      current_server_info_requesttime = 0;
}

static int client_load_data()
{
      debug_font = gfx_load_texture("debug_font.png", IMG_AUTO, TEXLOAD_NORESAMPLE);
      return 1;
}

extern int snapshot_data_rate[0xffff];
extern int snapshot_data_updates[0xffff];

const char *modc_getitemname(int type);

static void client_debug_render()
{
      static NETSTATS prev, current;
      static int64 last_snap = 0;
      static float frametime_avg = 0;
      int64 now = time_get();
      char buffer[512];
      
      if(!config.debug)
            return;
      
      gfx_blend_normal();
      gfx_texture_set(debug_font);
      gfx_mapscreen(0,0,gfx_screenwidth(),gfx_screenheight());
      
      if(time_get()-last_snap > time_freq())
      {
            last_snap = time_get();
            prev = current;
            net_stats(&current);
      }
      
      /*
            eth = 14
            ip = 20
            udp = 8
            total = 42
      */
      frametime_avg = frametime_avg*0.9f + frametime*0.1f;
      str_format(buffer, sizeof(buffer), "ticks: %8d %8d mem %dk %d  gfxmem: %dk  fps: %3d",
            current_tick, current_predtick,
            mem_stats()->allocated/1024,
            mem_stats()->total_allocations,
            gfx_memory_usage()/1024,
            (int)(1.0f/frametime_avg));
      gfx_quads_text(2, 2, 16, 1,1,1,1, buffer);

      
      {
            int send_packets = (current.sent_packets-prev.sent_packets);
            int send_bytes = (current.sent_bytes-prev.sent_bytes);
            int send_total = send_bytes + send_packets*42;
            int recv_packets = (current.recv_packets-prev.recv_packets);
            int recv_bytes = (current.recv_bytes-prev.recv_bytes);
            int recv_total = recv_bytes + recv_packets*42;
            
            if(!send_packets) send_packets++;
            if(!recv_packets) recv_packets++;
            str_format(buffer, sizeof(buffer), "send: %3d %5d+%4d=%5d (%3d kbps) avg: %5d\nrecv: %3d %5d+%4d=%5d (%3d kbps) avg: %5d",
                  send_packets, send_bytes, send_packets*42, send_total, (send_total*8)/1024, send_bytes/send_packets,
                  recv_packets, recv_bytes, recv_packets*42, recv_total, (recv_total*8)/1024, recv_bytes/recv_packets);
            gfx_quads_text(2, 14, 16, 1,1,1,1, buffer);
      }
      
      /* render rates */
      {
            int y = 0;
            int i;
            for(i = 0; i < 256; i++)
            {
                  if(snapshot_data_rate[i])
                  {
                        str_format(buffer, sizeof(buffer), "%4d %20s: %8d %8d %8d", i, modc_getitemname(i), snapshot_data_rate[i]/8, snapshot_data_updates[i],
                              (snapshot_data_rate[i]/snapshot_data_updates[i])/8);
                        gfx_quads_text(2, 100+y*12, 16, 1,1,1,1, buffer);
                        y++;
                  }
            }
      }

      str_format(buffer, sizeof(buffer), "pred: %d ms  %3.2f", 
            (int)((st_get(&predicted_time, now)-st_get(&game_time, now))*1000/(float)time_freq()),
            predicted_time.adjustspeed[1]);
      gfx_quads_text(2, 70, 16, 1,1,1,1, buffer);
      
      /* render graphs */
      if(config.dbg_graphs)
      {
            //gfx_mapscreen(0,0,400.0f,300.0f);
            float w = gfx_screenwidth()/4.0f;
            float h = gfx_screenheight()/6.0f;
            float sp = gfx_screenwidth()/100.0f;
            float x = gfx_screenwidth()-w-sp;

            graph_scale_max(&fps_graph);
            graph_scale_min(&fps_graph);
            graph_render(&fps_graph, x, sp*5, w, h, "FPS");
            graph_render(&inputtime_margin_graph, x, sp*5+h+sp, w, h, "Prediction Margin");
            graph_render(&gametime_margin_graph, x, sp*5+h+sp+h+sp, w, h, "Gametime Margin");
      }
}

void client_quit()
{
      client_set_state(CLIENTSTATE_QUITING);
}

const char *client_error_string()
{
      return netclient_error_string(net);
}

static void client_render()
{
      if(config.gfx_clear)    
            gfx_clear(1,1,0);

      modc_render();
      client_debug_render();
}

static const char *client_load_map(const char *name, const char *filename, int wanted_crc)
{
      static char errormsg[128];
      DATAFILE *df;
      int crc;
      
      client_set_state(CLIENTSTATE_LOADING);
      
      df = datafile_load(filename);
      if(!df)
      {
            str_format(errormsg, sizeof(errormsg), "map '%s' not found", filename);
            return errormsg;
      }
      
      /* get the crc of the map */
      crc = datafile_crc(filename);
      if(crc != wanted_crc)
      {
            datafile_unload(df);
            str_format(errormsg, sizeof(errormsg), "map differs from the server. %08x != %08x", crc, wanted_crc);
            return errormsg;
      }
      
      // stop demo recording if we loaded a new map
      demorec_record_stop();
      
      dbg_msg("client", "loaded map '%s'", filename);
      recived_snapshots = 0;
      map_set(df);
      
      str_copy(current_map, name, sizeof(current_map));
      current_map_crc = crc;
      
      return NULL;
}

static const char *client_load_map_search(const char *mapname, int wanted_crc)
{
      const char *error = 0;
      char buf[512];
      dbg_msg("client", "loading map, map=%s wanted crc=%08x", mapname, wanted_crc);
      client_set_state(CLIENTSTATE_LOADING);
      
      /* try the normal maps folder */
      str_format(buf, sizeof(buf), "maps/%s.map", mapname);
      error = client_load_map(mapname, buf, wanted_crc);
      if(!error)
            return error;

      /* try the downloaded maps */
      str_format(buf, sizeof(buf), "downloadedmaps/%s_%8x.map", mapname, wanted_crc);
      error = client_load_map(mapname, buf, wanted_crc);
      return error;
}

static int player_score_comp(const void *a, const void *b)
{
      SERVER_INFO_PLAYER *p0 = (SERVER_INFO_PLAYER *)a;
      SERVER_INFO_PLAYER *p1 = (SERVER_INFO_PLAYER *)b;
      if(p0->score == p1->score)
            return 0;
      if(p0->score < p1->score)
            return 1;
      return -1;
}

static void client_process_packet(NETCHUNK *packet)
{
      if(packet->client_id == -1)
      {
            /* connectionlesss */
            if(packet->data_size == (int)(sizeof(VERSIONSRV_VERSION) + sizeof(VERSION_DATA)) &&
                  memcmp(packet->data, VERSIONSRV_VERSION, sizeof(VERSIONSRV_VERSION)) == 0)
            {
                  unsigned char *versiondata = (unsigned char*) packet->data + sizeof(VERSIONSRV_VERSION);
                  int version_match = !memcmp(versiondata, VERSION_DATA, sizeof(VERSION_DATA));
                  
                  dbg_msg("client/version", "version does %s (%d.%d.%d)",
                        version_match ? "match" : "NOT match",
                        versiondata[1], versiondata[2], versiondata[3]);
                  
                  /* assume version is out of date when version-data doesn't match */
                  if (!version_match)
                  {
                        sprintf(versionstr, "%d.%d.%d", versiondata[1], versiondata[2], versiondata[3]);
                  }
            }
            
            if(packet->data_size >= (int)sizeof(SERVERBROWSE_LIST) &&
                  memcmp(packet->data, SERVERBROWSE_LIST, sizeof(SERVERBROWSE_LIST)) == 0)
            {
                  int size = packet->data_size-sizeof(SERVERBROWSE_LIST);
                  int num = size/sizeof(MASTERSRV_ADDR);
                  MASTERSRV_ADDR *addrs = (MASTERSRV_ADDR *)((char*)packet->data+sizeof(SERVERBROWSE_LIST));
                  int i;

                  for(i = 0; i < num; i++)
                  {
                        NETADDR addr;
                        
                        /* convert address */
                        mem_zero(&addr, sizeof(addr));
                        addr.type = NETTYPE_IPV4;
                        addr.ip[0] = addrs[i].ip[0];
                        addr.ip[1] = addrs[i].ip[1];
                        addr.ip[2] = addrs[i].ip[2];
                        addr.ip[3] = addrs[i].ip[3];
                        addr.port = (addrs[i].port[1]<<8) | addrs[i].port[0];
                        
                        client_serverbrowse_set(&addr, BROWSESET_MASTER_ADD, -1, NULL);
                  }
            }

            {
                  int packet_type = 0;
                  if(packet->data_size >= (int)sizeof(SERVERBROWSE_INFO) && memcmp(packet->data, SERVERBROWSE_INFO, sizeof(SERVERBROWSE_INFO)) == 0)
                        packet_type = 2;

                  if(packet->data_size >= (int)sizeof(SERVERBROWSE_OLD_INFO) && memcmp(packet->data, SERVERBROWSE_OLD_INFO, sizeof(SERVERBROWSE_OLD_INFO)) == 0)
                        packet_type = 1;
                  
                  if(packet_type)
                  {
                        /* we got ze info */
                        UNPACKER up;
                        SERVER_INFO info = {0};
                        int i;
                        int token = -1;
                        
                        unpacker_reset(&up, (unsigned char*)packet->data+sizeof(SERVERBROWSE_INFO), packet->data_size-sizeof(SERVERBROWSE_INFO));
                        if(packet_type >= 2)
                              token = atol(unpacker_get_string(&up));
                        str_copy(info.version, unpacker_get_string(&up), sizeof(info.version));
                        str_copy(info.name, unpacker_get_string(&up), sizeof(info.name));
                        str_copy(info.map, unpacker_get_string(&up), sizeof(info.map));
                        str_copy(info.gametype, unpacker_get_string(&up), sizeof(info.gametype));
                        info.flags = atol(unpacker_get_string(&up));
                        info.progression = atol(unpacker_get_string(&up));
                        info.num_players = atol(unpacker_get_string(&up));
                        info.max_players = atol(unpacker_get_string(&up));
                        str_format(info.address, sizeof(info.address), "%d.%d.%d.%d:%d",
                              packet->address.ip[0], packet->address.ip[1], packet->address.ip[2],
                              packet->address.ip[3], packet->address.port);
                        
                        for(i = 0; i < info.num_players; i++)
                        {
                              str_copy(info.players[i].name, unpacker_get_string(&up), sizeof(info.players[i].name));
                              info.players[i].score = atol(unpacker_get_string(&up));
                        }
                        
                        if(!up.error)
                        {
                              /* sort players */
                              qsort(info.players, info.num_players, sizeof(*info.players), player_score_comp);
                              
                              if(net_addr_comp(&server_address, &packet->address) == 0)
                              {
                                    mem_copy(&current_server_info, &info, sizeof(current_server_info));
                                    current_server_info.netaddr = server_address;
                                    current_server_info_requesttime = -1;
                              }
                              else
                              {
                                    if(packet_type == 2)
                                          client_serverbrowse_set(&packet->address, BROWSESET_TOKEN, token, &info);
                                    else
                                          client_serverbrowse_set(&packet->address, BROWSESET_OLD_INTERNET, -1, &info);
                              }
                        }
                  }
            }
      }
      else
      {
            int sys;
            int msg = msg_unpack_start(packet->data, packet->data_size, &sys);
            
            if(sys)
            {
                  /* system message */
                  if(msg == NETMSG_MAP_CHANGE)
                  {
                        const char *map = msg_unpack_string();
                        int map_crc = msg_unpack_int();
                        const char *error = 0;
                        int i;

                        if(msg_unpack_error())
                              return;
                        
                        for(i = 0; map[i]; i++) /* protect the player from nasty map names */
                        {
                              if(map[i] == '/' || map[i] == '\\')
                                    error = "strange character in map name";
                        }
                        
                        if(error)
                              client_disconnect_with_reason(error);
                        else
                        {
                              error = client_load_map_search(map, map_crc);

                              if(!error)
                              {
                                    dbg_msg("client/network", "loading done");
                                    client_send_ready();
                                    modc_connected();
                              }
                              else
                              {
                                    str_format(mapdownload_filename, sizeof(mapdownload_filename), "downloadedmaps/%s_%08x.map", map, map_crc);

                                    dbg_msg("client/network", "starting to download map to '%s'", mapdownload_filename);
                                    
                                    mapdownload_chunk = 0;
                                    str_copy(mapdownload_name, map, sizeof(mapdownload_name));
                                    mapdownload_file = engine_openfile(mapdownload_filename, IOFLAG_WRITE);
                                    mapdownload_crc = map_crc;
                                    mapdownload_totalsize = -1;
                                    mapdownload_amount = 0;
                                    
                                    msg_pack_start_system(NETMSG_REQUEST_MAP_DATA, MSGFLAG_VITAL|MSGFLAG_FLUSH);
                                    msg_pack_int(mapdownload_chunk);
                                    msg_pack_end();
                                    client_send_msg();
                                                            
                                    if(config.debug)
                                          dbg_msg("client/network", "requested chunk %d", mapdownload_chunk);
                              }
                        }
                  }
                  else if(msg == NETMSG_MAP_DATA)
                  {
                        int last = msg_unpack_int();
                        int total_size = msg_unpack_int();
                        int size = msg_unpack_int();
                        const unsigned char *data = msg_unpack_raw(size);
                        
                        /* check fior errors */
                        if(msg_unpack_error() || size <= 0 || total_size <= 0 || !mapdownload_file)
                              return;
                        
                        io_write(mapdownload_file, data, size);
                        
                        mapdownload_totalsize = total_size;
                        mapdownload_amount += size;
                        
                        if(last)
                        {
                              const char *error;
                              dbg_msg("client/network", "download complete, loading map");
                              
                              io_close(mapdownload_file);
                              mapdownload_file = 0;
                              mapdownload_amount = 0;
                              mapdownload_totalsize = -1;
                              
                              /* load map */
                              error = client_load_map(mapdownload_name, mapdownload_filename, mapdownload_crc);
                              if(!error)
                              {
                                    dbg_msg("client/network", "loading done");
                                    client_send_ready();
                                    modc_connected();
                              }
                              else
                                    client_disconnect_with_reason(error);
                        }
                        else
                        {
                              /* request new chunk */
                              mapdownload_chunk++;
                              msg_pack_start_system(NETMSG_REQUEST_MAP_DATA, MSGFLAG_VITAL|MSGFLAG_FLUSH);
                              msg_pack_int(mapdownload_chunk);
                              msg_pack_end();
                              client_send_msg();

                              if(config.debug)
                                    dbg_msg("client/network", "requested chunk %d", mapdownload_chunk);
                        }
                  }
                  else if(msg == NETMSG_PING)
                  {
                        msg_pack_start_system(NETMSG_PING_REPLY, 0);
                        msg_pack_end();
                        client_send_msg();
                  }
                  else if(msg == NETMSG_RCON_AUTH_STATUS)
                  {
                        int result = msg_unpack_int();
                        if(msg_unpack_error() == 0)
                              rcon_authed = result;
                  }
                  else if(msg == NETMSG_RCON_LINE)
                  {
                        const char *line = msg_unpack_string();
                        if(msg_unpack_error() == 0)
                        {
                              /*dbg_msg("remote", "%s", line);*/
                              modc_rcon_line(line);
                        }
                  }
                  else if(msg == NETMSG_PING_REPLY)
                        dbg_msg("client/network", "latency %.2f", (time_get() - ping_start_time)*1000 / (float)time_freq());
                  else if(msg == NETMSG_INPUTTIMING)
                  {
                        int input_predtick = msg_unpack_int();
                        int time_left = msg_unpack_int();
                        
                        /* adjust our prediction time */
                        int k;
                        int64 target = 0;
                        for(k = 0; k < 200; k++)
                        {
                              if(inputs[k].tick == input_predtick)
                              {
                                    target = inputs[k].predicted_time + (time_get() - inputs[k].time);
                                    target = target - (int64)(((time_left-prediction_margin)/1000.0f)*time_freq());
                                    //st_update(&predicted_time, );
                                    break;
                              }
                        }
                        
                        if(target)
                              st_update(&predicted_time, &inputtime_margin_graph, target, time_left, 1);
                  }
                  else if(msg == NETMSG_SNAP || msg == NETMSG_SNAPSINGLE || msg == NETMSG_SNAPEMPTY)
                  {
                        /*dbg_msg("client/network", "got snapshot"); */
                        int num_parts = 1;
                        int part = 0;
                        int game_tick = msg_unpack_int();
                        int delta_tick = game_tick-msg_unpack_int();
                        int part_size = 0;
                        int crc = 0;
                        int complete_size = 0;
                        const char *data = 0;
                        
                        /* we are not allowed to process snapshot yet */
                        if(client_state() < CLIENTSTATE_LOADING)
                              return;
                        
                        if(msg == NETMSG_SNAP)
                        {
                              num_parts = msg_unpack_int();
                              part = msg_unpack_int();
                        }
                        
                        if(msg != NETMSG_SNAPEMPTY)
                        {
                              crc = msg_unpack_int();
                              part_size = msg_unpack_int();
                        }
                        
                        data = (const char *)msg_unpack_raw(part_size);
                        
                        if(msg_unpack_error())
                              return;
                              
                        if(game_tick >= current_recv_tick)
                        {
                              if(game_tick != current_recv_tick)
                              {
                                    snapshot_parts = 0;
                                    current_recv_tick = game_tick;
                              }
                                    
                              /* TODO: clean this up abit */
                              mem_copy((char*)snapshot_incomming_data + part*MAX_SNAPSHOT_PACKSIZE, data, part_size);
                              snapshot_parts |= 1<<part;
                        
                              if(snapshot_parts == (1<<num_parts)-1)
                              {
                                    static SNAPSHOT emptysnap;
                                    SNAPSHOT *deltashot = &emptysnap;
                                    int purgetick;
                                    void *deltadata;
                                    int deltasize;
                                    unsigned char tmpbuffer2[MAX_SNAPSHOT_SIZE];
                                    unsigned char tmpbuffer3[MAX_SNAPSHOT_SIZE];
                                    int snapsize;
                                    
                                    complete_size = (num_parts-1) * MAX_SNAPSHOT_PACKSIZE + part_size;

                                    /* reset snapshoting */
                                    snapshot_parts = 0;
                                    
                                    /* find snapshot that we should use as delta */
                                    emptysnap.data_size = 0;
                                    emptysnap.num_items = 0;
                                    
                                    /* find delta */
                                    if(delta_tick >= 0)
                                    {
                                          int deltashot_size = snapstorage_get(&snapshot_storage, delta_tick, 0, &deltashot, 0);
                                          
                                          if(deltashot_size < 0)
                                          {
                                                /* couldn't find the delta snapshots that the server used */
                                                /* to compress this snapshot. force the server to resync */
                                                if(config.debug)
                                                      dbg_msg("client", "error, couldn't find the delta snapshot");
                                                
                                                /* ack snapshot */
                                                /* TODO: combine this with the input message */
                                                ack_game_tick = -1;
                                                return;
                                          }
                                    }

                                    /* decompress snapshot */
                                    deltadata = snapshot_empty_delta();
                                    deltasize = sizeof(int)*3;

                                    if(complete_size)
                                    {     
                                          int intsize = intpack_decompress(snapshot_incomming_data, complete_size, tmpbuffer2);

                                          if(intsize < 0) /* failure during decompression, bail */
                                                return;

                                          deltadata = tmpbuffer2;
                                          deltasize = intsize;
                                    }
                                    
                                    /* unpack delta */
                                    purgetick = delta_tick;
                                    snapsize = snapshot_unpack_delta(deltashot, (SNAPSHOT*)tmpbuffer3, deltadata, deltasize);
                                    if(snapsize < 0)
                                    {
                                          dbg_msg("client", "delta unpack failed!");
                                          return;
                                    }
                                    
                                    if(msg != NETMSG_SNAPEMPTY && snapshot_crc((SNAPSHOT*)tmpbuffer3) != crc)
                                    {
                                          if(config.debug)
                                          {
                                                dbg_msg("client", "snapshot crc error #%d - tick=%d wantedcrc=%d gotcrc=%d compressed_size=%d delta_tick=%d",
                                                      snapcrcerrors, game_tick, crc, snapshot_crc((SNAPSHOT*)tmpbuffer3), complete_size, delta_tick);
                                          }
                                                
                                          snapcrcerrors++;
                                          if(snapcrcerrors > 10)
                                          {
                                                /* to many errors, send reset */
                                                ack_game_tick = -1;
                                                client_send_input();
                                                snapcrcerrors = 0;
                                          }
                                          return;
                                    }
                                    else
                                    {
                                          if(snapcrcerrors)
                                                snapcrcerrors--;
                                    }

                                    /* purge old snapshots */
                                    purgetick = delta_tick;
                                    if(snapshots[SNAP_PREV] && snapshots[SNAP_PREV]->tick < purgetick)
                                          purgetick = snapshots[SNAP_PREV]->tick;
                                    if(snapshots[SNAP_CURRENT] && snapshots[SNAP_CURRENT]->tick < purgetick)
                                          purgetick = snapshots[SNAP_PREV]->tick;
                                    snapstorage_purge_until(&snapshot_storage, purgetick);
                                    
                                    /* add new */
                                    snapstorage_add(&snapshot_storage, game_tick, time_get(), snapsize, (SNAPSHOT*)tmpbuffer3, 1);

                                    /* add snapshot to demo */
                                    if(demorec_isrecording())
                                    {

                                          /* write tick marker */
                                          /*
                                          DEMOREC_TICKMARKER marker;
                                          marker.tick = game_tick;
                                          swap_endian(&marker, sizeof(int), sizeof(marker)/sizeof(int));
                                          demorec_record_write("TICK", sizeof(marker), &marker);
                                          demorec_record_write("SNAP", snapsize, tmpbuffer3);
                                          */
                                          
                                          /* write snapshot */
                                          demorec_record_snapshot(game_tick, tmpbuffer3, snapsize);
                                    }
                                    
                                    /* apply snapshot, cycle pointers */
                                    recived_snapshots++;

                                    current_recv_tick = game_tick;
                                    
                                    /* we got two snapshots until we see us self as connected */
                                    if(recived_snapshots == 2)
                                    {
                                          /* start at 200ms and work from there */
                                          st_init(&predicted_time, game_tick*time_freq()/50);
                                          predicted_time.adjustspeed[1] = 1000.0f;
                                          st_init(&game_time, (game_tick-1)*time_freq()/50);
                                          snapshots[SNAP_PREV] = snapshot_storage.first;
                                          snapshots[SNAP_CURRENT] = snapshot_storage.last;
                                          local_start_time = time_get();
                                          client_set_state(CLIENTSTATE_ONLINE);
                                    }

                                    /* adjust game time */
                                    {
                                          int64 now = st_get(&game_time, time_get());
                                          int64 tickstart = game_tick*time_freq()/50;
                                          int64 time_left = (tickstart-now)*1000 / time_freq();
                                          /*st_update(&game_time, (game_tick-1)*time_freq()/50);*/
                                          st_update(&game_time, &gametime_margin_graph, (game_tick-1)*time_freq()/50, time_left, 0);
                                    }
                                    
                                    /* ack snapshot */
                                    ack_game_tick = game_tick;
                              }
                        }
                  }
            }
            else
            {
                  /* game message */
                  if(demorec_isrecording())
                        demorec_record_message(packet->data, packet->data_size);
                        /* demorec_record_write("MESG", packet->data_size, ); */

                  modc_message(msg);
            }
      }
}

int client_mapdownload_amount() { return mapdownload_amount; }
int client_mapdownload_totalsize() { return mapdownload_totalsize; }

static void client_pump_network()
{
      NETCHUNK packet;

      netclient_update(net);

      if(client_state() != CLIENTSTATE_DEMOPLAYBACK)
      {
            /* check for errors */
            if(client_state() != CLIENTSTATE_OFFLINE && netclient_state(net) == NETSTATE_OFFLINE)
            {
                  client_set_state(CLIENTSTATE_OFFLINE);
                  client_disconnect();
                  dbg_msg("client", "offline error='%s'", netclient_error_string(net));
            }

            /* */
            if(client_state() == CLIENTSTATE_CONNECTING && netclient_state(net) == NETSTATE_ONLINE)
            {
                  /* we switched to online */
                  dbg_msg("client", "connected, sending info");
                  client_set_state(CLIENTSTATE_LOADING);
                  client_send_info();
            }
      }
      
      /* process packets */
      while(netclient_recv(net, &packet))
            client_process_packet(&packet);
}

static void client_democallback_snapshot(void *data, int size)
{
      /* update ticks, they could have changed */
      const DEMOREC_PLAYBACKINFO *info = demorec_playback_info();             
      SNAPSTORAGE_HOLDER *temp;
      current_tick = info->current_tick;
      prev_tick = info->previous_tick;
      
      /* handle snapshots */
      temp = snapshots[SNAP_PREV];
      snapshots[SNAP_PREV] = snapshots[SNAP_CURRENT];
      snapshots[SNAP_CURRENT] = temp;
      
      mem_copy(snapshots[SNAP_CURRENT]->snap, data, size);
      mem_copy(snapshots[SNAP_CURRENT]->alt_snap, data, size);
      
      modc_newsnapshot();
      /*modc_predict();*/
}

static void client_democallback_message(void *data, int size)
{
      int sys = 0;
      int msg = msg_unpack_start(data, size, &sys);
      if(!sys)
            modc_message(msg);
}


const DEMOPLAYBACK_INFO *client_demoplayer_getinfo()
{
      static DEMOPLAYBACK_INFO ret;
      const DEMOREC_PLAYBACKINFO *info = demorec_playback_info();
      ret.first_tick = info->first_tick;
      ret.last_tick = info->last_tick;
      ret.current_tick = info->current_tick;
      ret.paused = info->paused;
      ret.speed = info->speed;
      return &ret;
}

void client_demoplayer_setpos(float percent)
{
      demorec_playback_set(percent);
}

void client_demoplayer_setspeed(float speed)
{
      demorec_playback_setspeed(speed);
}

void client_demoplayer_setpause(int paused)
{
      if(paused)
            demorec_playback_pause();
      else
            demorec_playback_unpause();
}

static void client_update()
{
      if(client_state() == CLIENTSTATE_DEMOPLAYBACK)
      {
            demorec_playback_update();
            if(demorec_isplaying())
            {
                  /* update timers */
                  const DEMOREC_PLAYBACKINFO *info = demorec_playback_info();             
                  current_tick = info->current_tick;
                  prev_tick = info->previous_tick;
                  intratick = info->intratick;
                  ticktime = info->ticktime;
            }
            else
            {
                  /* disconnect on error */
                  client_disconnect();
            }
      }
      else if(client_state() != CLIENTSTATE_OFFLINE && recived_snapshots >= 3)
      {
            /* switch snapshot */
            int repredict = 0;
            int64 freq = time_freq();
            int64 now = st_get(&game_time, time_get());
            int64 pred_now = st_get(&predicted_time, time_get());

            while(1)
            {
                  SNAPSTORAGE_HOLDER *cur = snapshots[SNAP_CURRENT];
                  int64 tickstart = (cur->tick)*time_freq()/50;

                  if(tickstart < now)
                  {
                        SNAPSTORAGE_HOLDER *next = snapshots[SNAP_CURRENT]->next;
                        if(next)
                        {
                              snapshots[SNAP_PREV] = snapshots[SNAP_CURRENT];
                              snapshots[SNAP_CURRENT] = next;
                              
                              /* set ticks */
                              current_tick = snapshots[SNAP_CURRENT]->tick;
                              prev_tick = snapshots[SNAP_PREV]->tick;
                              
                              if(snapshots[SNAP_CURRENT] && snapshots[SNAP_PREV])
                              {
                                    modc_newsnapshot();
                                    repredict = 1;
                              }
                        }
                        else
                              break;
                  }
                  else
                        break;
            }

            if(snapshots[SNAP_CURRENT] && snapshots[SNAP_PREV])
            {
                  int64 curtick_start = (snapshots[SNAP_CURRENT]->tick)*time_freq()/50;
                  int64 prevtick_start = (snapshots[SNAP_PREV]->tick)*time_freq()/50;
                  /*tg_add(&predicted_time_graph, pred_now, 0); */
                  int prev_pred_tick = (int)(pred_now*50/time_freq());
                  int new_pred_tick = prev_pred_tick+1;
                  static float last_predintra = 0;

                  intratick = (now - prevtick_start) / (float)(curtick_start-prevtick_start);
                  ticktime = (now - prevtick_start) / (float)freq; /*(float)SERVER_TICK_SPEED);*/

                  curtick_start = new_pred_tick*time_freq()/50;
                  prevtick_start = prev_pred_tick*time_freq()/50;
                  predintratick = (pred_now - prevtick_start) / (float)(curtick_start-prevtick_start);
                  
                  if(new_pred_tick < snapshots[SNAP_PREV]->tick-SERVER_TICK_SPEED || new_pred_tick > snapshots[SNAP_PREV]->tick+SERVER_TICK_SPEED)
                  {
                        dbg_msg("client", "prediction time reset!");
                        st_init(&predicted_time, snapshots[SNAP_CURRENT]->tick*time_freq()/50);
                  }
                  
                  if(new_pred_tick > current_predtick)
                  {
                        last_predintra = predintratick;
                        current_predtick = new_pred_tick;
                        repredict = 1;
                        
                        /* send input */
                        client_send_input();
                  }
                  
                  last_predintra = predintratick;
            }

            /* only do sane predictions */
            if(repredict)
            {
                  if(current_predtick > current_tick && current_predtick < current_tick+50)
                        modc_predict();
            }
            
            /* fetch server info if we don't have it */
            if(client_state() >= CLIENTSTATE_LOADING &&
                  current_server_info_requesttime >= 0 &&
                  time_get() > current_server_info_requesttime)
            {
                  client_serverbrowse_request(&server_address);
                  current_server_info_requesttime = time_get()+time_freq()*2;
            }
      }

      /* STRESS TEST: join the server again */
      if(config.dbg_stress)
      {
            static int64 action_taken = 0;
            int64 now = time_get();
            if(client_state() == CLIENTSTATE_OFFLINE)
            {
                  if(now > action_taken+time_freq()*2)
                  {
                        dbg_msg("stress", "reconnecting!");
                        client_connect(config.dbg_stress_server);
                        action_taken = now;
                  }
            }
            else
            {
                  /*if(now > action_taken+time_freq()*(10+config.dbg_stress))
                  {
                        dbg_msg("stress", "disconnecting!");
                        client_disconnect();
                        action_taken = now;
                  }*/
            }
      }
      
      /* pump the network */
      client_pump_network();
      
      /* update the maser server registry */
      mastersrv_update();
      
      /* update the server browser */
      client_serverbrowse_update();
}


static void client_versionupdate()
{
      static int state = 0;
      static HOSTLOOKUP version_serveraddr;
      
      if(state == 0)
      {
            engine_hostlookup(&version_serveraddr, config.cl_version_server);
            state++;
      }
      else if(state == 1)
      {
            if(jobs_status(&version_serveraddr.job) == JOBSTATUS_DONE)
            {
                  NETCHUNK packet;
                  
                  mem_zero(&packet, sizeof(NETCHUNK));
                  
                  version_serveraddr.addr.port = VERSIONSRV_PORT;
                  
                  packet.client_id = -1;
                  packet.address = version_serveraddr.addr;
                  packet.data = VERSIONSRV_GETVERSION;
                  packet.data_size = sizeof(VERSIONSRV_GETVERSION);
                  packet.flags = NETSENDFLAG_CONNLESS;
                  
                  netclient_send(net, &packet);
                  state++;
            }
      }
}

extern int editor_update_and_render();
extern void editor_init();

static void client_run()
{
      NETADDR bindaddr;
      int64 reporttime = time_get();
      int64 reportinterval = time_freq()*1;

      static PERFORMACE_INFO rootscope = {"root", 0};
      perf_start(&rootscope);

      local_start_time = time_get();
      snapshot_parts = 0;
      
      /* init graphics and sound */
      if(gfx_init() != 0)
            return;

      /* start refreshing addresses while we load */
      mastersrv_refresh_addresses();
      
      /* init the editor */
      editor_init();

      /* sound is allowed to fail */
      snd_init();

      /* load data */
      if(!client_load_data())
            return;

      /* init the mod */
      modc_init();
      dbg_msg("client", "version %s", modc_net_version());
      
      /* open socket */
      mem_zero(&bindaddr, sizeof(bindaddr));
      net = netclient_open(bindaddr, 0);
      
      /* connect to the server if wanted */
      /*
      if(config.cl_connect[0] != 0)
            client_connect(config.cl_connect);
      config.cl_connect[0] = 0;
      */

      /* */
      graph_init(&fps_graph, 0.0f, 200.0f);
      
      /* never start with the editor */
      config.cl_editor = 0;
            
      inp_mouse_mode_relative();
      
      while (1)
      {     
            static PERFORMACE_INFO rootscope = {"root", 0};
            int64 frame_start_time = time_get();
            frames++;
            
            perf_start(&rootscope);

            /* */
            client_versionupdate();
            
            /* handle pending connects */
            if(cmd_connect[0])
            {
                  client_connect(cmd_connect);
                  cmd_connect[0] = 0;
            }
            
            /* update input */
            {
                  static PERFORMACE_INFO scope = {"inp_update", 0};
                  perf_start(&scope);
                  inp_update();
                  perf_end();
            }

            /* update sound */            
            {
                  static PERFORMACE_INFO scope = {"snd_update", 0};
                  perf_start(&scope);
                  snd_update();
                  perf_end();
            }
            
            /* release focus */
            if(!gfx_window_active())
            {
                  if(window_must_refocus == 0)
                        inp_mouse_mode_absolute();
                  window_must_refocus = 1;
            }
            else if (config.dbg_focus && inp_key_pressed(KEY_ESCAPE))
            {
                  inp_mouse_mode_absolute();
                  window_must_refocus = 1;
            }

            /* refocus */
            if(window_must_refocus && gfx_window_active())
            {
                  if(window_must_refocus < 3)
                  {
                        inp_mouse_mode_absolute();
                        window_must_refocus++;
                  }

                  if(inp_key_pressed(KEY_MOUSE_1))
                  {
                        inp_mouse_mode_relative();
                        window_must_refocus = 0;
                  }
            }

            /* panic quit button */
            if(inp_key_pressed(KEY_LCTRL) && inp_key_pressed(KEY_LSHIFT) && inp_key_pressed('q'))
                  break;

            if(inp_key_pressed(KEY_LCTRL) && inp_key_pressed(KEY_LSHIFT) && inp_key_down('d'))
                  config.debug ^= 1;

            if(inp_key_pressed(KEY_LCTRL) && inp_key_pressed(KEY_LSHIFT) && inp_key_down('g'))
                  config.dbg_graphs ^= 1;

            if(inp_key_pressed(KEY_LCTRL) && inp_key_pressed(KEY_LSHIFT) && inp_key_down('e'))
            {
                  config.cl_editor = config.cl_editor^1;
                  inp_mouse_mode_relative();
            }
            
            /*
            if(!gfx_window_open())
                  break;
            */
                  
            /* render */
            if(config.cl_editor)
            {
                  client_update();
                  editor_update_and_render();
                  gfx_swap();
            }
            else
            {
                  {
                        static PERFORMACE_INFO scope = {"client_update", 0};
                        perf_start(&scope);
                        client_update();
                        perf_end();
                  }
                  
                  if(config.dbg_stress)
                  {
                        if((frames%10) == 0)
                        {
                              client_render();
                              gfx_swap();
                        }
                  }
                  else
                  {
                        {
                              static PERFORMACE_INFO scope = {"client_render", 0};
                              perf_start(&scope);
                              client_render();
                              perf_end();
                        }

                        {
                              static PERFORMACE_INFO scope = {"gfx_swap", 0};
                              perf_start(&scope);
                              gfx_swap();
                              perf_end();
                        }
                  }
            }

            perf_end();

            
            /* check conditions */
            if(client_state() == CLIENTSTATE_QUITING)
                  break;

            /* be nice */
            if(config.dbg_stress)
                  thread_sleep(5);
            else if(config.cl_cpu_throttle || !gfx_window_active())
                  thread_sleep(1);
                  
            if(config.dbg_hitch)
            {
                  thread_sleep(config.dbg_hitch);
                  config.dbg_hitch = 0;
            }
            
            if(reporttime < time_get())
            {
                  if(0 && config.debug)
                  {
                        dbg_msg("client/report", "fps=%.02f (%.02f %.02f) netstate=%d",
                              frames/(float)(reportinterval/time_freq()),
                              1.0f/frametime_high,
                              1.0f/frametime_low,
                              netclient_state(net));
                  }
                  frametime_low = 1;
                  frametime_high = 0;
                  frames = 0;
                  reporttime += reportinterval;
                  perf_next();
                  
                  if(config.dbg_pref)
                        perf_dump(&rootscope);
            }
            
            /* update frametime */
            frametime = (time_get()-frame_start_time)/(float)time_freq();
            if(frametime < frametime_low)
                  frametime_low = frametime;
            if(frametime > frametime_high)
                  frametime_high = frametime;
            
            graph_add(&fps_graph, 1.0f/frametime, 1,1,1);
      }
      
      modc_shutdown();
      client_disconnect();

      gfx_shutdown();
      snd_shutdown();
}

static void con_connect(void *result, void *user_data)
{
      str_copy(cmd_connect, console_arg_string(result, 0), sizeof(cmd_connect));
}

static void con_disconnect(void *result, void *user_data)
{
      client_disconnect();
}

static void con_quit(void *result, void *user_data)
{
      client_quit();
}

static void con_ping(void *result, void *user_data)
{
      msg_pack_start_system(NETMSG_PING, 0);
      msg_pack_end();
      client_send_msg();
      ping_start_time = time_get();
}

static void con_screenshot(void *result, void *user_data)
{
      gfx_screenshot();
}

static void con_rcon(void *result, void *user_data)
{
      client_rcon(console_arg_string(result, 0));
}

static void con_rcon_auth(void *result, void *user_data)
{
      client_rcon_auth("", console_arg_string(result, 0));
}

static void con_addfavorite(void *result, void *user_data)
{
      NETADDR addr;
      if(net_addr_from_str(&addr, console_arg_string(result, 0)) == 0)
            client_serverbrowse_addfavorite(addr);
}

void client_demoplayer_play(const char *filename)
{
      int crc;
      client_disconnect();
      netclient_error_string_reset(net);
      
      /* try to start playback */
      demorec_playback_registercallbacks(client_democallback_snapshot, client_democallback_message);
      
      if(demorec_playback_load(filename))
            return;
      
      /* load map */
      crc = (demorec_playback_info()->header.crc[0]<<24)|
            (demorec_playback_info()->header.crc[1]<<16)|
            (demorec_playback_info()->header.crc[2]<<8)|
            (demorec_playback_info()->header.crc[3]);
      client_load_map_search(demorec_playback_info()->header.map, crc);
      modc_connected();
      
      /* setup buffers */     
      mem_zero(demorec_snapshotdata, sizeof(demorec_snapshotdata));

      snapshots[SNAP_CURRENT] = &demorec_snapshotholders[SNAP_CURRENT];
      snapshots[SNAP_PREV] = &demorec_snapshotholders[SNAP_PREV];
      
      snapshots[SNAP_CURRENT]->snap = (SNAPSHOT *)demorec_snapshotdata[SNAP_CURRENT][0];
      snapshots[SNAP_CURRENT]->alt_snap = (SNAPSHOT *)demorec_snapshotdata[SNAP_CURRENT][1];
      snapshots[SNAP_CURRENT]->snap_size = 0;
      snapshots[SNAP_CURRENT]->tick = -1;
      
      snapshots[SNAP_PREV]->snap = (SNAPSHOT *)demorec_snapshotdata[SNAP_PREV][0];
      snapshots[SNAP_PREV]->alt_snap = (SNAPSHOT *)demorec_snapshotdata[SNAP_PREV][1];
      snapshots[SNAP_PREV]->snap_size = 0;
      snapshots[SNAP_PREV]->tick = -1;

      /* enter demo playback state */
      client_set_state(CLIENTSTATE_DEMOPLAYBACK);
      
      demorec_playback_play();
      modc_entergame();
}

static void con_play(void *result, void *user_data)
{
      client_demoplayer_play(console_arg_string(result, 0));
}

static void con_record(void *result, void *user_data)
{
      if(state != CLIENTSTATE_ONLINE)
            dbg_msg("demorec/record", "client is not online");
      else
      {
            char filename[512];
            str_format(filename, sizeof(filename), "demos/%s.demo", console_arg_string(result, 0));
            demorec_record_start(filename, modc_net_version(), current_map, current_map_crc, "client");
      }
}

static void con_stoprecord(void *result, void *user_data)
{
      demorec_record_stop();
}

static void con_serverdummy(void *result, void *user_data)
{
      dbg_msg("client", "this command is not available on the client");
}

static void client_register_commands()
{
      MACRO_REGISTER_COMMAND("quit", "", CFGFLAG_CLIENT, con_quit, 0x0, "Quit Teeworlds");
      MACRO_REGISTER_COMMAND("exit", "", CFGFLAG_CLIENT, con_quit, 0x0, "Quit Teeworlds");
      MACRO_REGISTER_COMMAND("connect", "s", CFGFLAG_CLIENT, con_connect, 0x0, "Connect to the specified host/ip");
      MACRO_REGISTER_COMMAND("disconnect", "", CFGFLAG_CLIENT, con_disconnect, 0x0, "Disconnect from the server");
      MACRO_REGISTER_COMMAND("ping", "", CFGFLAG_CLIENT, con_ping, 0x0, "Ping the current server");
      MACRO_REGISTER_COMMAND("screenshot", "", CFGFLAG_CLIENT, con_screenshot, 0x0, "Take a screenshot");
      MACRO_REGISTER_COMMAND("rcon", "r", CFGFLAG_CLIENT, con_rcon, 0x0, "Send specified command to rcon");
      MACRO_REGISTER_COMMAND("rcon_auth", "s", CFGFLAG_CLIENT, con_rcon_auth, 0x0, "Authenticate to rcon");

      MACRO_REGISTER_COMMAND("play", "r", CFGFLAG_CLIENT, con_play, 0x0, "Play the file specified");
      MACRO_REGISTER_COMMAND("record", "s", CFGFLAG_CLIENT, con_record, 0, "Record to the file");
      MACRO_REGISTER_COMMAND("stoprecord", "", CFGFLAG_CLIENT, con_stoprecord, 0, "Stop recording");

      MACRO_REGISTER_COMMAND("add_favorite", "s", CFGFLAG_CLIENT, con_addfavorite, 0x0, "Add a server as a favorite");
      
      /* register server dummy commands for tab completion */
      MACRO_REGISTER_COMMAND("kick", "i", CFGFLAG_SERVER, con_serverdummy, 0, "Kick player with specified id");
      MACRO_REGISTER_COMMAND("ban", "s?i", CFGFLAG_SERVER, con_serverdummy, 0, "Ban player with ip/id for x minutes");
      MACRO_REGISTER_COMMAND("unban", "s", CFGFLAG_SERVER, con_serverdummy, 0, "Unban ip");
      MACRO_REGISTER_COMMAND("bans", "", CFGFLAG_SERVER, con_serverdummy, 0, "Show banlist");
      MACRO_REGISTER_COMMAND("status", "", CFGFLAG_SERVER, con_serverdummy, 0, "List players");
      MACRO_REGISTER_COMMAND("shutdown", "", CFGFLAG_SERVER, con_serverdummy, 0, "Shut down");
      /*MACRO_REGISTER_COMMAND("record", "", CFGFLAG_SERVER, con_serverdummy, 0);
      MACRO_REGISTER_COMMAND("stoprecord", "", CFGFLAG_SERVER, con_serverdummy, 0);*/
}

void client_save_line(const char *line)
{
      engine_config_write_line(line);     
}

const char *client_user_directory()
{
      static char path[1024] = {0};
      fs_storage_path("Teeworlds", path, sizeof(path));
      return path;
}

#if defined(CONF_PLATFORM_MACOSX)
int SDL_main(int argc, char **argv)
#else
int main(int argc, char **argv)
#endif
{
      /* init the engine */
      dbg_msg("client", "starting...");
      engine_init("Teeworlds");
      
      /* register all console commands */
      client_register_commands();
      modc_console_init();
      
      /* parse the command line arguments */
      engine_parse_arguments(argc, argv);

      /* execute config file */
      console_execute_file("settings.cfg");
      
      /* run the client*/
      client_run();
      
      /* write down the config and quit */
      if(engine_config_write_start() == 0)
      {
            config_save();
            client_serverbrowse_save();
            modc_save_config();
            engine_config_write_stop();
      }
      
      return 0;
}

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