iw4x-client/src/Components/Modules/Bots.cpp

416 lines
11 KiB
C++

#include <STDInclude.hpp>
#include "Bots.hpp"
#include "GSC/Script.hpp"
namespace Components
{
std::vector<Bots::botData> Bots::BotNames;
Dvar::Var Bots::SVRandomBotNames;
struct BotMovementInfo
{
std::int32_t buttons; // Actions
std::int8_t forward;
std::int8_t right;
std::uint16_t weapon;
bool active;
};
static BotMovementInfo g_botai[18];
struct BotAction
{
std::string action;
std::int32_t key;
};
static const BotAction BotActions[] =
{
{ "gostand", Game::CMD_BUTTON_UP },
{ "gocrouch", Game::CMD_BUTTON_CROUCH },
{ "goprone", Game::CMD_BUTTON_PRONE },
{ "fire", Game::CMD_BUTTON_ATTACK },
{ "melee", Game::CMD_BUTTON_MELEE },
{ "frag", Game::CMD_BUTTON_FRAG },
{ "smoke", Game::CMD_BUTTON_OFFHAND_SECONDARY },
{ "reload", Game::CMD_BUTTON_RELOAD },
{ "sprint", Game::CMD_BUTTON_SPRINT },
{ "leanleft", Game::CMD_BUTTON_LEAN_LEFT },
{ "leanright", Game::CMD_BUTTON_LEAN_RIGHT },
{ "ads", Game::CMD_BUTTON_ADS },
{ "holdbreath", Game::CMD_BUTTON_BREATH },
{ "usereload", Game::CMD_BUTTON_USE_RELOAD },
{ "activate", Game::CMD_BUTTON_ACTIVATE },
};
int Bots::BuildConnectString(char* buffer, const char* connectString, int num, int, int protocol, int checksum, int statVer, int statStuff, int port)
{
static size_t botId = 0; // Loop over the BotNames vector
static bool loadedNames = false; // Load file only once
const char* botName;
const char* clanName;
if (BotNames.empty() && !loadedNames)
{
FileSystem::File bots("bots.txt");
loadedNames = true;
if (bots.exists())
{
auto data = Utils::String::Split(bots.getBuffer(), '\n');
if (SVRandomBotNames.get<bool>())
{
std::random_device rd;
std::mt19937 gen(rd());
std::ranges::shuffle(data, gen);
}
for (auto& entry : data)
{
// Take into account for CR line endings
Utils::String::Replace(entry, "\r", "");
// Remove whitespace
Utils::String::Trim(entry);
if (!entry.empty())
{
std::string clanAbbrev;
// Check if there is a clan tag
if (const auto pos = entry.find(','); pos != std::string::npos)
{
// Only start copying over from non-null characters (otherwise it can be "<=")
if ((pos + 1) < entry.size())
{
clanAbbrev = entry.substr(pos + 1);
}
entry = entry.substr(0, pos);
}
BotNames.emplace_back(std::make_pair(entry, clanAbbrev));
}
}
}
}
if (!BotNames.empty())
{
botId %= BotNames.size();
const auto index = botId++;
botName = BotNames[index].first.data();
clanName = BotNames[index].second.data();
}
else
{
botName = Utils::String::VA("bot%d", ++botId);
clanName = "BOT";
}
return _snprintf_s(buffer, 0x400, _TRUNCATE, connectString, num, botName, clanName, protocol, checksum, statVer, statStuff, port);
}
void Bots::Spawn(unsigned int count)
{
for (std::size_t i = 0; i < count; ++i)
{
Scheduler::Once([]
{
auto* ent = Game::SV_AddTestClient();
if (ent == nullptr)
return;
Scheduler::Once([ent]
{
Game::Scr_AddString("autoassign");
Game::Scr_AddString("team_marinesopfor");
Game::Scr_Notify(ent, static_cast<std::uint16_t>(Game::SL_GetString("menuresponse", 0)), 2);
Scheduler::Once([ent]
{
Game::Scr_AddString(Utils::String::VA("class%u", Utils::Cryptography::Rand::GenerateInt() % 5u));
Game::Scr_AddString("changeclass");
Game::Scr_Notify(ent, static_cast<std::uint16_t>(Game::SL_GetString("menuresponse", 0)), 2);
}, Scheduler::Pipeline::SERVER, 1s);
}, Scheduler::Pipeline::SERVER, 1s);
}, Scheduler::Pipeline::SERVER, 500ms * (i + 1));
}
}
void Bots::GScr_isTestClient(const Game::scr_entref_t entref)
{
const auto* ent = Game::GetEntity(entref);
if (!ent->client)
{
Game::Scr_Error("isTestClient: entity must be a player entity");
return;
}
Game::Scr_AddBool(Game::SV_IsTestClient(ent->s.number) != 0);
}
void Bots::AddMethods()
{
Script::AddMethMultiple(GScr_isTestClient, false, {"IsTestClient", "IsBot"}); // Usage: self IsTestClient();
Script::AddMethod("BotStop", [](Game::scr_entref_t entref) // Usage: <bot> BotStop();
{
const auto* ent = Game::GetPlayerEntity(entref);
if (Game::SV_IsTestClient(ent->s.number) == 0)
{
Game::Scr_Error("^1BotStop: Can only call on a bot!\n");
return;
}
ZeroMemory(&g_botai[entref.entnum], sizeof(BotMovementInfo));
g_botai[entref.entnum].weapon = 1;
g_botai[entref.entnum].active = true;
});
Script::AddMethod("BotWeapon", [](Game::scr_entref_t entref) // Usage: <bot> BotWeapon(<str>);
{
const auto* ent = Game::GetPlayerEntity(entref);
if (Game::SV_IsTestClient(ent->s.number) == 0)
{
Game::Scr_Error("^1BotWeapon: Can only call on a bot!\n");
return;
}
const auto* weapon = Game::Scr_GetString(0);
if (weapon == nullptr || weapon[0] == '\0')
{
g_botai[entref.entnum].weapon = 1;
return;
}
const auto weapId = Game::G_GetWeaponIndexForName(weapon);
g_botai[entref.entnum].weapon = static_cast<uint16_t>(weapId);
g_botai[entref.entnum].active = true;
});
Script::AddMethod("BotAction", [](Game::scr_entref_t entref) // Usage: <bot> BotAction(<str action>);
{
const auto* ent = Game::GetPlayerEntity(entref);
if (Game::SV_IsTestClient(ent->s.number) == 0)
{
Game::Scr_Error("^1BotAction: Can only call on a bot!\n");
return;
}
const auto* action = Game::Scr_GetString(0);
if (action == nullptr)
{
Game::Scr_ParamError(0, "^1BotAction: Illegal parameter!\n");
return;
}
if (action[0] != '+' && action[0] != '-')
{
Game::Scr_ParamError(0, "^1BotAction: Sign for action must be '+' or '-'.\n");
return;
}
for (std::size_t i = 0; i < std::extent_v<decltype(BotActions)>; ++i)
{
if (Utils::String::ToLower(&action[1]) != BotActions[i].action)
continue;
if (action[0] == '+')
g_botai[entref.entnum].buttons |= BotActions[i].key;
else
g_botai[entref.entnum].buttons &= ~BotActions[i].key;
g_botai[entref.entnum].active = true;
return;
}
Game::Scr_ParamError(0, "^1BotAction: Unknown action.\n");
});
Script::AddMethod("BotMovement", [](Game::scr_entref_t entref) // Usage: <bot> BotMovement(<int>, <int>);
{
const auto* ent = Game::GetPlayerEntity(entref);
if (Game::SV_IsTestClient(ent->s.number) == 0)
{
Game::Scr_Error("^1BotMovement: Can only call on a bot!\n");
return;
}
const auto forwardInt = std::clamp<int>(Game::Scr_GetInt(0), std::numeric_limits<char>::min(), std::numeric_limits<char>::max());
const auto rightInt = std::clamp<int>(Game::Scr_GetInt(1), std::numeric_limits<char>::min(), std::numeric_limits<char>::max());
g_botai[entref.entnum].forward = static_cast<int8_t>(forwardInt);
g_botai[entref.entnum].right = static_cast<int8_t>(rightInt);
g_botai[entref.entnum].active = true;
});
}
void Bots::BotAiAction(Game::client_t* cl)
{
if (cl->gentity == nullptr)
return;
const auto entnum = cl->gentity->s.number;
// Keep test client functionality
if (!g_botai[entnum].active)
{
Game::SV_BotUserMove(cl);
return;
}
Game::usercmd_s userCmd;
ZeroMemory(&userCmd, sizeof(Game::usercmd_s));
userCmd.serverTime = *Game::svs_time;
userCmd.buttons = g_botai[entnum].buttons;
userCmd.forwardmove = g_botai[entnum].forward;
userCmd.rightmove = g_botai[entnum].right;
userCmd.weapon = g_botai[entnum].weapon;
Game::SV_ClientThink(cl, &userCmd);
}
constexpr auto SV_BotUserMove = 0x626E50;
__declspec(naked) void Bots::SV_BotUserMove_Hk()
{
__asm
{
pushad
push edi
call BotAiAction
add esp, 4
popad
ret
}
}
void Bots::G_SelectWeaponIndex(int clientNum, int iWeaponIndex)
{
if (g_botai[clientNum].active)
{
g_botai[clientNum].weapon = static_cast<uint16_t>(iWeaponIndex);
}
}
__declspec(naked) void Bots::G_SelectWeaponIndex_Hk()
{
__asm
{
pushad
push [esp + 0x20 + 0x8]
push [esp + 0x20 + 0x8]
call G_SelectWeaponIndex
add esp, 0x8
popad
// Code skipped by hook
mov eax, [esp + 0x8]
push eax
push 0x441B85
retn
}
}
Bots::Bots()
{
AssertOffset(Game::client_t, bIsTestClient, 0x41AF0);
AssertOffset(Game::client_t, ping, 0x212C8);
// Replace connect string
Utils::Hook::Set<const char*>(0x48ADA6, "connect bot%d \"\\cg_predictItems\\1\\cl_anonymous\\0\\color\\4\\head\\default\\model\\multi\\snaps\\20\\rate\\5000\\name\\%s\\clanAbbrev\\%s\\protocol\\%d\\checksum\\%d\\statver\\%d %u\\qport\\%d\"");
// Intercept sprintf for the connect string
Utils::Hook(0x48ADAB, BuildConnectString, HOOK_CALL).install()->quick();
Utils::Hook(0x627021, SV_BotUserMove_Hk, HOOK_CALL).install()->quick();
Utils::Hook(0x627241, SV_BotUserMove_Hk, HOOK_CALL).install()->quick();
Utils::Hook(0x441B80, G_SelectWeaponIndex_Hk, HOOK_JUMP).install()->quick();
SVRandomBotNames = Dvar::Register<bool>("sv_randomBotNames", false, Game::DVAR_NONE, "Randomize the bots' names");
// Reset BotMovementInfo.active when client is dropped
Events::OnClientDisconnect([](const int clientNum)
{
g_botai[clientNum].active = false;
});
// Zero the bot command array
for (std::size_t i = 0; i < std::extent_v<decltype(g_botai)>; ++i)
{
ZeroMemory(&g_botai[i], sizeof(BotMovementInfo));
g_botai[i].weapon = 1; // Prevent the bots from defaulting to the 'none' weapon
}
Command::Add("spawnBot", [](Command::Params* params)
{
auto count = 1u;
if (params->size() > 1)
{
if (params->get(1) == "all"s)
{
count = *Game::svs_clientCount;
}
else
{
char* end;
const auto* input = params->get(1);
count = std::strtoul(input, &end, 10);
if (input == end)
{
Logger::Warning(Game::CON_CHANNEL_DONT_FILTER, "{} is not a valid input\nUsage: {} optional <number of bots> or optional <\"all\">\n",
input, params->get(0));
return;
}
}
}
count = std::min(static_cast<unsigned int>(*Game::svs_clientCount), count);
// Check if ingame and host
if (!Game::SV_Loaded())
{
Toast::Show("cardicon_headshot", "^1Error", "You need to be host to spawn bots!", 3000);
Logger::Print("You need to be host to spawn bots!\n");
return;
}
Toast::Show("cardicon_headshot", "^2Success", Utils::String::VA("Spawning %d %s...", count, (count == 1 ? "bot" : "bots")), 3000);
Logger::Debug("Spawning {} {}", count, (count == 1 ? "bot" : "bots"));
Spawn(count);
});
AddMethods();
// In case a loaded mod didn't call "BotStop" before the VM shutdown
Events::OnVMShutdown([]
{
for (std::size_t i = 0; i < std::extent_v<decltype(g_botai)>; ++i)
{
g_botai[i].active = false;
}
});
}
}