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// server-side ai manager
namespace aiman
{
bool dorefresh = false, botbalance = true;
VARN(serverbotlimit, botlimit, 0, 8, MAXBOTS);
VAR(serverbotbalance, 0, 1, 1);
void calcteams(vector<teamscore> &teams)
{
static const char * const defaults[2] = { "good", "evil" };
loopv(clients)
{
clientinfo *ci = clients[i];
if(ci->state.state==CS_SPECTATOR || !ci->team[0]) continue;
teamscore *t = NULL;
loopvj(teams) if(!strcmp(teams[j].team, ci->team)) { t = &teams[j]; break; }
if(t) t->score++;
else teams.add(teamscore(ci->team, 1));
}
teams.sort(teamscore::compare);
if(teams.length() < int(sizeof(defaults)/sizeof(defaults[0])))
{
loopi(sizeof(defaults)/sizeof(defaults[0])) if(teams.htfind(defaults[i]) < 0) teams.add(teamscore(defaults[i], 0));
}
}
void balanceteams()
{
vector<teamscore> teams;
calcteams(teams);
vector<clientinfo *> reassign;
loopv(bots) if(bots[i]) reassign.add(bots[i]);
while(reassign.length() && teams.length() && teams[0].score > teams.last().score + 1)
{
teamscore &t = teams.last();
clientinfo *bot = NULL;
loopv(reassign) if(reassign[i] && !strcmp(reassign[i]->team, teams[0].team))
{
bot = reassign.removeunordered(i);
teams[0].score--;
t.score++;
for(int j = teams.length() - 2; j >= 0; j--)
{
if(teams[j].score >= teams[j+1].score) break;
swap(teams[j], teams[j+1]);
}
break;
}
if(bot)
{
if(smode && bot->state.state==CS_ALIVE) smode->changeteam(bot, bot->team, t.team);
copystring(bot->team, t.team, MAXTEAMLEN+1);
sendf(-1, 1, "riisi", N_SETTEAM, bot->clientnum, bot->team, 0);
}
else teams.remove(0, 1);
}
}
const char *chooseteam()
{
vector<teamscore> teams;
calcteams(teams);
return teams.length() ? teams.last().team : "";
}
static inline bool validaiclient(clientinfo *ci)
{
return ci->clientnum >= 0 && ci->state.aitype == AI_NONE && (ci->state.state!=CS_SPECTATOR || ci->local || (ci->privilege && !ci->warned));
}
clientinfo *findaiclient(clientinfo *exclude = NULL)
{
clientinfo *least = NULL;
loopv(clients)
{
clientinfo *ci = clients[i];
if(!validaiclient(ci) || ci==exclude) continue;
if(!least || ci->bots.length() < least->bots.length()) least = ci;
}
return least;
}
bool addai(int skill, int limit)
{
int numai = 0, cn = -1, maxai = limit >= 0 ? min(limit, MAXBOTS) : MAXBOTS;
loopv(bots)
{
clientinfo *ci = bots[i];
if(!ci || ci->ownernum < 0) { if(cn < 0) cn = i; continue; }
numai++;
}
if(numai >= maxai) return false;
if(bots.inrange(cn))
{
clientinfo *ci = bots[cn];
if(ci)
{ // reuse a slot that was going to removed
clientinfo *owner = findaiclient();
ci->ownernum = owner ? owner->clientnum : -1;
if(owner) owner->bots.add(ci);
ci->aireinit = 2;
dorefresh = true;
return true;
}
}
else { cn = bots.length(); bots.add(NULL); }
const char *team = m_teammode ? chooseteam() : "";
if(!bots[cn]) bots[cn] = new clientinfo;
clientinfo *ci = bots[cn];
ci->clientnum = MAXCLIENTS + cn;
ci->state.aitype = AI_BOT;
clientinfo *owner = findaiclient();
ci->ownernum = owner ? owner->clientnum : -1;
if(owner) owner->bots.add(ci);
ci->state.skill = skill <= 0 ? rnd(50) + 51 : clamp(skill, 1, 101);
clients.add(ci);
ci->state.lasttimeplayed = lastmillis;
copystring(ci->name, "bot", MAXNAMELEN+1);
ci->state.state = CS_DEAD;
copystring(ci->team, team, MAXTEAMLEN+1);
ci->playermodel = rnd(128);
ci->aireinit = 2;
ci->connected = true;
dorefresh = true;
return true;
}
void deleteai(clientinfo *ci)
{
int cn = ci->clientnum - MAXCLIENTS;
if(!bots.inrange(cn)) return;
if(ci->ownernum >= 0 && !ci->aireinit && smode) smode->leavegame(ci, true);
sendf(-1, 1, "ri2", N_CDIS, ci->clientnum);
clientinfo *owner = (clientinfo *)getclientinfo(ci->ownernum);
if(owner) owner->bots.removeobj(ci);
clients.removeobj(ci);
DELETEP(bots[cn]);
dorefresh = true;
}
bool deleteai()
{
loopvrev(bots) if(bots[i] && bots[i]->ownernum >= 0)
{
deleteai(bots[i]);
return true;
}
return false;
}
void reinitai(clientinfo *ci)
{
if(ci->ownernum < 0) deleteai(ci);
else if(ci->aireinit >= 1)
{
sendf(-1, 1, "ri6ss", N_INITAI, ci->clientnum, ci->ownernum, ci->state.aitype, ci->state.skill, ci->playermodel, ci->name, ci->team);
if(ci->aireinit == 2)
{
ci->reassign();
if(ci->state.state==CS_ALIVE) sendspawn(ci);
else sendresume(ci);
}
ci->aireinit = 0;
}
}
void shiftai(clientinfo *ci, clientinfo *owner = NULL)
{
if(ci->ownernum >= 0 && !ci->aireinit && smode) smode->leavegame(ci, true);
clientinfo *prevowner = (clientinfo *)getclientinfo(ci->ownernum);
if(prevowner) prevowner->bots.removeobj(ci);
if(!owner) { ci->aireinit = 0; ci->ownernum = -1; }
else if(ci->ownernum != owner->clientnum) { ci->aireinit = 2; ci->ownernum = owner->clientnum; owner->bots.add(ci); }
dorefresh = true;
}
void removeai(clientinfo *ci)
{ // either schedules a removal, or someone else to assign to
loopvrev(ci->bots) shiftai(ci->bots[i], findaiclient(ci));
}
bool reassignai()
{
clientinfo *hi = NULL, *lo = NULL;
loopv(clients)
{
clientinfo *ci = clients[i];
if(!validaiclient(ci)) continue;
if(!lo || ci->bots.length() < lo->bots.length()) lo = ci;
if(!hi || ci->bots.length() > hi->bots.length()) hi = ci;
}
if(hi && lo && hi->bots.length() - lo->bots.length() > 1)
{
loopvrev(hi->bots)
{
shiftai(hi->bots[i], lo);
return true;
}
}
return false;
}
void checksetup()
{
if(m_teammode && botbalance) balanceteams();
loopvrev(bots) if(bots[i]) reinitai(bots[i]);
}
void clearai()
{ // clear and remove all ai immediately
loopvrev(bots) if(bots[i]) deleteai(bots[i]);
}
void checkai()
{
if(!dorefresh) return;
dorefresh = false;
if(m_botmode && numclients(-1, false, true))
{
checksetup();
while(reassignai());
}
else clearai();
}
void reqadd(clientinfo *ci, int skill)
{
if(!ci->local && !ci->privilege) return;
if(!addai(skill, !ci->local && ci->privilege < PRIV_ADMIN ? botlimit : -1)) sendf(ci->clientnum, 1, "ris", N_SERVMSG, "failed to create or assign bot");
}
void reqdel(clientinfo *ci)
{
if(!ci->local && !ci->privilege) return;
if(!deleteai()) sendf(ci->clientnum, 1, "ris", N_SERVMSG, "failed to remove any bots");
}
void setbotlimit(clientinfo *ci, int limit)
{
if(ci && !ci->local && ci->privilege < PRIV_ADMIN) return;
botlimit = clamp(limit, 0, MAXBOTS);
dorefresh = true;
defformatstring(msg, "bot limit is now %d", botlimit);
sendservmsg(msg);
}
void setbotbalance(clientinfo *ci, bool balance)
{
if(ci && !ci->local && !ci->privilege) return;
botbalance = balance ? 1 : 0;
dorefresh = true;
defformatstring(msg, "bot team balancing is now %s", botbalance ? "enabled" : "disabled");
sendservmsg(msg);
}
void changemap()
{
dorefresh = true;
loopv(clients) if(clients[i]->local || clients[i]->privilege) return;
if(botbalance != (serverbotbalance != 0)) setbotbalance(NULL, serverbotbalance != 0);
}
void addclient(clientinfo *ci)
{
if(ci->state.aitype == AI_NONE) dorefresh = true;
}
void changeteam(clientinfo *ci)
{
if(ci->state.aitype == AI_NONE) dorefresh = true;
}
}
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