/*
* @brief Pumps the command cycle, sending the most recently gathered movement
* to the server.
*/
void Cl_SendCmd(void) {
mem_buf_t buf;
byte data[128];
if (cls.state <= CL_CONNECTING)
return;
if (cls.state == CL_CONNECTED) {
// send any reliable messages and / or don't timeout
if (cls.net_chan.message.size || cls.real_time - cls.net_chan.last_sent > 1000)
Netchan_Transmit(&cls.net_chan, NULL, 0);
return;
}
// send a user info update if needed
if (cvar_user_info_modified) {
Net_WriteByte(&cls.net_chan.message, CL_CMD_USER_INFO);
Net_WriteString(&cls.net_chan.message, Cvar_UserInfo());
cvar_user_info_modified = false;
}
// finalize the current command
Cl_FinalizeCmd();
// and write it out
Mem_InitBuffer(&buf, data, sizeof(data));
Net_WriteByte(&buf, CL_CMD_MOVE);
// let the server know what the last frame we got was, so the next
// message can be delta compressed
if (!cl.frame.valid || (cls.demo_file && Fs_Tell(cls.demo_file) == 0))
Net_WriteLong(&buf, -1); // no compression
else
Net_WriteLong(&buf, cl.frame.frame_num);
// send this and the previous two cmds in the message, so
// if the last packet was dropped, it can be recovered
static user_cmd_t null_cmd;
cl_cmd_t *cmd = &cl.cmds[(cls.net_chan.outgoing_sequence - 2) & CMD_MASK];
Net_WriteDeltaUserCmd(&buf, &null_cmd, &cmd->cmd);
user_cmd_t *old_cmd = &cmd->cmd;
cmd = &cl.cmds[(cls.net_chan.outgoing_sequence - 1) & CMD_MASK];
Net_WriteDeltaUserCmd(&buf, old_cmd, &cmd->cmd);
old_cmd = &cmd->cmd;
cmd = &cl.cmds[(cls.net_chan.outgoing_sequence) & CMD_MASK];
Net_WriteDeltaUserCmd(&buf, old_cmd, &cmd->cmd);
// deliver the message
Netchan_Transmit(&cls.net_chan, buf.data, buf.size);
cl.packet_counter++;
// initialize the next command
Cl_InitCmd();
}
/**
* @brief Sends the user info string to the server over the reliable channel.
*/
static void Cl_WriteUserInfoCommand(void) {
if (cvar_user_info_modified) {
cvar_user_info_modified = false;
Net_WriteByte(&cls.net_chan.message, CL_CMD_USER_INFO);
Net_WriteString(&cls.net_chan.message, Cvar_UserInfo());
}
}
/*
* @brief We have gotten a challenge from the server, so try and connect.
*/
static void Cl_SendConnect(void) {
net_addr_t addr;
memset(&addr, 0, sizeof(addr));
if (!Net_StringToNetaddr(cls.server_name, &addr)) {
Com_Print("Bad server address\n");
cls.connect_time = 0;
return;
}
if (addr.port == 0) // use default port
addr.port = htons(PORT_SERVER);
Netchan_OutOfBandPrint(NS_UDP_CLIENT, &addr, "connect %i %i %u \"%s\"\n", PROTOCOL_MAJOR,
qport->integer, cls.challenge, Cvar_UserInfo());
cvar_user_info_modified = false;
}