1

     2

#include "Server.hh"

     3

#include "Protocol.hh"

     4

#include "Config.hh"

     5

#include "../Engine.hh"

     6

#include "../Logger.hh"

     7

     8

#include <cassert>

     9

    10

NetworkServer::NetworkServer (GameState &state, const NetworkAddress &listen_addr) : 

    11

    state(state), netsession(NETWORK_MAGIC_ID), netobjs(netsession, NETCHAN_CORE) {

    12

    13

    // connect slots

    14

    slots.connect(netsession.sig_node_connected(), this, &NetworkServer::on_node_connected);

    15

    16

    // and then we listen

    17

    netsession.listen(listen_addr);

    18

    19

    Engine::log(INFO, "server") << "running, listen_addr=" << listen_addr;

    20

}

    21

    22

void NetworkServer::on_node_connected (NetworkNode *node) {

    23

    // create the player object (it logs it)

    24

    NetworkServerPlayer *player = new NetworkServerPlayer(*this, node);

    25

    26

    // add to players

    27

    players.push_back(player);

    28

    29

    // add to GameState

    31

}

    32

    33

void NetworkServer::handle_disconnect (NetworkServerPlayer *player) {

    34

    // remove from state

    35

    state.removePlayer(player);

    36

    37

    // remove from list

    38

    players.remove(player);

    39

}

    40

    41

NetworkServerPlayer::NetworkServerPlayer (NetworkServer &server, NetworkNode *node) : 

    43

    44

    // log

    45

    Engine::log(INFO, "server_player.connected") << "node=" << node << ", obj=" << obj;

    46

    47

    // messages

    48

    slots.connect(node->sig_disconnected(), this, &NetworkServerPlayer::on_disconnected);

    49

    slots.connect(obj.sig_message(NETMSG_CLIENT_MOVE), this, &NetworkServerPlayer::on_move);

    50

    51

    // the initial NETMSG_PLAYER_HELLO

    52

    NetworkPacket hello_pkt;

    53

    hello_pkt.write_vector(position);

    54

    55

    obj.send_to(node, NETMSG_SERVER_HELLO, hello_pkt, true);

    56

    57

    // send other player objects

    58

    for (std::list<NetworkServerPlayer*>::iterator it = server.players.begin(); it != server.players.end(); it++) {

    59

        NetworkServerPlayer *player = *it;

    60

        NetworkPacket player_pkt;

    61

    62

        // player is not in players list yet

    63

        assert(player != this);

    64

    65

        player_pkt.write_vector(player->position);

    66

    67

        player->obj.send_to(node, NETMSG_PLAYER_INFO, player_pkt, true);

    68

    }

    69

    70

    // broadcast NETMSG_PLAYER_JOIN to all clients except current

    71

    obj.send_all_except(NETMSG_PLAYER_JOIN, hello_pkt, node, true);

    72

    73

    // send terrain data...

    74

    send_terrain_data();

    75

}

    76

    77

void NetworkServerPlayer::handleDig (Vector position, float radius) {

    78

    NetworkPacket pkt;

    79

    80

    pkt.write_vector(position);

    81

    pkt.write_float32(radius);

    82

    83

    Engine::log(INFO, "server_player.handle_dig") << "position=" << position << ", radius=" << radius;

    84

    85

    // tell everyone... make this reliable... 

    86

    obj.send_all(NETMSG_PLAYER_DIG, pkt, true);

    87

    88

    // and carry out the actual dig on the server as well

    89

    Player::handleDig(position, radius);

    90

}

    91

    92

void NetworkServerPlayer::on_disconnected (void) {

    93

    NetworkPacket pkt;

    94

    95

    Engine::log(INFO, "server_player.disconnected") << "node=" << node << ", obj=" << obj;

    96

    97

    // remove from server

    98

    server.handle_disconnect(this);

    99

   100

    // tell other clients

   101

    obj.send_all(NETMSG_PLAYER_QUIT, pkt, true);

   102

   103

    // free

   104

//    delete this;

   105

}

   106

   107

void NetworkServerPlayer::on_move (NetworkNode *src, NetworkPacketInput &pkt) {

   108

    // sanity-check, other players shouldn't move

   109

    if (src != node) {

   110

        Engine::log(WARN, "server_player.on_move") << "packet from wrong src=" << src << ", node=" << node;

   111

        return;

   112

    }

   113

   114

    PlayerInput_Move input = pkt.read_uint16();

   115

   116

    Engine::log(INFO, "server_player.on_move") << "player=" << obj << ", old_pos=" << position << ", input=" << input;

   117

   118

    // apply input

   119

    handleMove(input);  

   120

   121

    // send position update

   122

    send_position_update();

   123

}

   124

   125

void NetworkServerPlayer::send_terrain_data (void) {

   126

    Terrain &terrain = server.state.world;

   127

   128

    uint32_t map_w = terrain.terrain.size();

   129

    uint32_t map_h = terrain.terrain[0].size();

   130

   131

    // allocate our packet...

   132

    BigNetworkPacket pkt (NETWORK_SESSION_HEADER_SIZE + 2 * sizeof(uint32_t) + map_w * map_h);

   133

   134

    // write netsession header

   135

    node->write_packet_header(pkt, NETCHAN_TERRAIN_ARRAY);

   136

   137

    // write terrain dimensions

   138

    pkt.write_uint32(map_w);

   139

    pkt.write_uint32(map_h);

   140

   141

    // write out terrain data

   142

    for (int x = 0; x < map_w; x++) {

   143

        for (int y = 0; y < map_h; y++) {

   144

            pkt.write_uint8((uint8_t) terrain.terrain[x][y]);

   145

        }

   146

    }

   147

   148

    // send

   149

    node->send_raw(pkt, true);

   150

}

   151

   152

void NetworkServerPlayer::send_position_update (void) {

   153

    NetworkPacket pkt;

   154

   155

    int flags = (inAir ? NETWORK_PHYSICS_INAIR : 0) | (facingRight ? NETWORK_PHYSICS_FACE_RIGHT : 0);

   156

   157

    pkt.write_vector(position);

   158

    pkt.write_vector(velocity);

   159

    pkt.write_uint8(flags);

   160

    pkt.write_float32(aim);

   161

   162

    Engine::log(INFO, "server_player.send_position_update") << "obj=" << obj << " -> " << position << "+" << velocity << " [" << flags << "]";

   163

   164

    obj.send_all(NETMSG_PLAYER_POSITION, pkt, false);

   165

}

   166