473 lines
11 KiB
C++
473 lines
11 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: Basic BOT handling.
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//
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// $Workfile: $
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// $Date: $
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//
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//-----------------------------------------------------------------------------
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// $Log: $
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//
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// $NoKeywords: $
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//=============================================================================//
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#include "cbase.h"
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#include "player.h"
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#include "sdk_player.h"
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#include "in_buttons.h"
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#include "movehelper_server.h"
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#include "gameinterface.h"
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class CSDKBot;
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void Bot_Think( CSDKBot *pBot );
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ConVar bot_forcefireweapon( "bot_forcefireweapon", "", 0, "Force bots with the specified weapon to fire." );
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ConVar bot_forceattack2( "bot_forceattack2", "0", 0, "When firing, use attack2." );
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ConVar bot_forceattackon( "bot_forceattackon", "0", 0, "When firing, don't tap fire, hold it down." );
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ConVar bot_flipout( "bot_flipout", "0", 0, "When on, all bots fire their guns." );
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ConVar bot_changeclass( "bot_changeclass", "0", 0, "Force all bots to change to the specified class." );
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static ConVar bot_mimic( "bot_mimic", "0", 0, "Bot uses usercmd of player by index." );
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static ConVar bot_mimic_yaw_offset( "bot_mimic_yaw_offset", "0", 0, "Offsets the bot yaw." );
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ConVar bot_sendcmd( "bot_sendcmd", "", 0, "Forces bots to send the specified command." );
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ConVar bot_crouch( "bot_crouch", "0", 0, "Bot crouches" );
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static int g_CurBotNumber = 1;
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// This is our bot class.
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class CSDKBot : public CSDKPlayer
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{
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public:
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bool m_bBackwards;
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float m_flNextTurnTime;
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bool m_bLastTurnToRight;
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float m_flNextStrafeTime;
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float m_flSideMove;
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QAngle m_ForwardAngle;
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QAngle m_LastAngles;
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};
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LINK_ENTITY_TO_CLASS( sdk_bot, CSDKBot );
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class CBotManager
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{
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public:
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static CBasePlayer* ClientPutInServerOverride_Bot( edict_t *pEdict, const char *playername )
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{
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// This tells it which edict to use rather than creating a new one.
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CBasePlayer::s_PlayerEdict = pEdict;
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CSDKBot *pPlayer = static_cast<CSDKBot *>( CreateEntityByName( "sdk_bot" ) );
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if ( pPlayer )
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{
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pPlayer->SetPlayerName( playername );
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}
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return pPlayer;
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}
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};
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//-----------------------------------------------------------------------------
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// Purpose: Create a new Bot and put it in the game.
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// Output : Pointer to the new Bot, or NULL if there's no free clients.
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//-----------------------------------------------------------------------------
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CBasePlayer *BotPutInServer( bool bFrozen )
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{
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char botname[ 64 ];
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Q_snprintf( botname, sizeof( botname ), "Bot%02i", g_CurBotNumber );
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// This trick lets us create a CSDKBot for this client instead of the CSDKPlayer
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// that we would normally get when ClientPutInServer is called.
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ClientPutInServerOverride( &CBotManager::ClientPutInServerOverride_Bot );
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edict_t *pEdict = engine->CreateFakeClient( botname );
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ClientPutInServerOverride( NULL );
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if (!pEdict)
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{
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Msg( "Failed to create Bot.\n");
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return NULL;
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}
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// Allocate a player entity for the bot, and call spawn
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CSDKBot *pPlayer = ((CSDKBot*)CBaseEntity::Instance( pEdict ));
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pPlayer->ClearFlags();
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pPlayer->AddFlag( FL_CLIENT | FL_FAKECLIENT );
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if ( bFrozen )
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pPlayer->AddEFlags( EFL_BOT_FROZEN );
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pPlayer->ChangeTeam( TEAM_UNASSIGNED );
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pPlayer->RemoveAllItems( true );
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pPlayer->Spawn();
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g_CurBotNumber++;
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return pPlayer;
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}
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// Handler for the "bot" command.
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CON_COMMAND_F( "bot_add", "Add a bot.", FCVAR_CHEAT )
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{
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// Look at -count.
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int count = args.FindArgInt( "-count", 1 );
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count = clamp( count, 1, 16 );
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// Look at -frozen.
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bool bFrozen = !!args.FindArg( "-frozen" );
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// Ok, spawn all the bots.
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while ( --count >= 0 )
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{
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BotPutInServer( bFrozen );
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose: Run through all the Bots in the game and let them think.
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//-----------------------------------------------------------------------------
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void Bot_RunAll( void )
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{
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for ( int i = 1; i <= gpGlobals->maxClients; i++ )
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{
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CSDKPlayer *pPlayer = ToSDKPlayer( UTIL_PlayerByIndex( i ) );
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if ( pPlayer && (pPlayer->GetFlags() & FL_FAKECLIENT) )
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{
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CSDKBot *pBot = dynamic_cast< CSDKBot* >( pPlayer );
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if ( pBot )
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Bot_Think( pBot );
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}
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}
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}
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bool Bot_RunMimicCommand( CUserCmd& cmd )
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{
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if ( bot_mimic.GetInt() <= 0 )
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return false;
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if ( bot_mimic.GetInt() > gpGlobals->maxClients )
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return false;
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CBasePlayer *pPlayer = UTIL_PlayerByIndex( bot_mimic.GetInt() );
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if ( !pPlayer )
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return false;
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if ( !pPlayer->GetLastUserCommand() )
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return false;
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cmd = *pPlayer->GetLastUserCommand();
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cmd.viewangles[YAW] += bot_mimic_yaw_offset.GetFloat();
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if( bot_crouch.GetInt() )
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cmd.buttons |= IN_DUCK;
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return true;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Simulates a single frame of movement for a player
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// Input : *fakeclient -
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// *viewangles -
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// forwardmove -
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// m_flSideMove -
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// upmove -
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// buttons -
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// impulse -
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// msec -
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// Output : virtual void
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//-----------------------------------------------------------------------------
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static void RunPlayerMove( CSDKPlayer *fakeclient, CUserCmd &cmd, float frametime )
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{
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if ( !fakeclient )
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return;
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// Store off the globals.. they're gonna get whacked
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float flOldFrametime = gpGlobals->frametime;
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float flOldCurtime = gpGlobals->curtime;
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float flTimeBase = gpGlobals->curtime + gpGlobals->frametime - frametime;
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fakeclient->SetTimeBase( flTimeBase );
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MoveHelperServer()->SetHost( fakeclient );
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fakeclient->PlayerRunCommand( &cmd, MoveHelperServer() );
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// save off the last good usercmd
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fakeclient->SetLastUserCommand( cmd );
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// Clear out any fixangle that has been set
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fakeclient->pl.fixangle = FIXANGLE_NONE;
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// Restore the globals..
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gpGlobals->frametime = flOldFrametime;
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gpGlobals->curtime = flOldCurtime;
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}
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void Bot_UpdateStrafing( CSDKBot *pBot, CUserCmd &cmd )
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{
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if ( gpGlobals->curtime >= pBot->m_flNextStrafeTime )
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{
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pBot->m_flNextStrafeTime = gpGlobals->curtime + 1.0f;
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if ( random->RandomInt( 0, 5 ) == 0 )
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{
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pBot->m_flSideMove = -600.0f + 1200.0f * random->RandomFloat( 0, 2 );
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}
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else
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{
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pBot->m_flSideMove = 0;
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}
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cmd.sidemove = pBot->m_flSideMove;
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if ( random->RandomInt( 0, 20 ) == 0 )
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{
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pBot->m_bBackwards = true;
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}
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else
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{
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pBot->m_bBackwards = false;
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}
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}
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}
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void Bot_UpdateDirection( CSDKBot *pBot )
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{
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float angledelta = 15.0;
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QAngle angle;
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int maxtries = (int)360.0/angledelta;
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if ( pBot->m_bLastTurnToRight )
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{
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angledelta = -angledelta;
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}
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angle = pBot->GetLocalAngles();
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trace_t trace;
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Vector vecSrc, vecEnd, forward;
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while ( --maxtries >= 0 )
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{
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AngleVectors( angle, &forward );
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vecSrc = pBot->GetLocalOrigin() + Vector( 0, 0, 36 );
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vecEnd = vecSrc + forward * 10;
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UTIL_TraceHull( vecSrc, vecEnd, VEC_HULL_MIN_SCALED( pBot ), VEC_HULL_MAX_SCALED( pBot ),
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MASK_PLAYERSOLID, pBot, COLLISION_GROUP_NONE, &trace );
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if ( trace.fraction == 1.0 )
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{
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if ( gpGlobals->curtime < pBot->m_flNextTurnTime )
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{
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break;
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}
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}
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angle.y += angledelta;
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if ( angle.y > 180 )
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angle.y -= 360;
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else if ( angle.y < -180 )
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angle.y += 360;
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pBot->m_flNextTurnTime = gpGlobals->curtime + 2.0;
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pBot->m_bLastTurnToRight = random->RandomInt( 0, 1 ) == 0 ? true : false;
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pBot->m_ForwardAngle = angle;
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pBot->m_LastAngles = angle;
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}
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pBot->SetLocalAngles( angle );
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}
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void Bot_FlipOut( CSDKBot *pBot, CUserCmd &cmd )
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{
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if ( bot_flipout.GetInt() > 0 && pBot->IsAlive() )
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{
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if ( bot_forceattackon.GetBool() || (RandomFloat(0.0,1.0) > 0.5) )
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{
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cmd.buttons |= bot_forceattack2.GetBool() ? IN_ATTACK2 : IN_ATTACK;
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}
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if ( bot_flipout.GetInt() >= 2 )
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{
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QAngle angOffset = RandomAngle( -1, 1 );
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pBot->m_LastAngles += angOffset;
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for ( int i = 0 ; i < 2; i++ )
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{
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if ( fabs( pBot->m_LastAngles[ i ] - pBot->m_ForwardAngle[ i ] ) > 15.0f )
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{
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if ( pBot->m_LastAngles[ i ] > pBot->m_ForwardAngle[ i ] )
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{
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pBot->m_LastAngles[ i ] = pBot->m_ForwardAngle[ i ] + 15;
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}
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else
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{
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pBot->m_LastAngles[ i ] = pBot->m_ForwardAngle[ i ] - 15;
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}
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}
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}
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pBot->m_LastAngles[ 2 ] = 0;
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pBot->SetLocalAngles( pBot->m_LastAngles );
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}
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}
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}
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void Bot_HandleSendCmd( CSDKBot *pBot )
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{
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if ( strlen( bot_sendcmd.GetString() ) > 0 )
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{
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//send the cmd from this bot
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pBot->ClientCommand( bot_sendcmd.GetString() );
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bot_sendcmd.SetValue("");
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}
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}
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// If bots are being forced to fire a weapon, see if I have it
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void Bot_ForceFireWeapon( CSDKBot *pBot, CUserCmd &cmd )
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{
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if ( bot_forcefireweapon.GetString() )
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{
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CBaseCombatWeapon *pWeapon = pBot->Weapon_OwnsThisType( bot_forcefireweapon.GetString() );
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if ( pWeapon )
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{
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// Switch to it if we don't have it out
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CBaseCombatWeapon *pActiveWeapon = pBot->GetActiveWeapon();
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// Switch?
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if ( pActiveWeapon != pWeapon )
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{
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pBot->Weapon_Switch( pWeapon );
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}
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else
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{
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// Start firing
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// Some weapons require releases, so randomise firing
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if ( bot_forceattackon.GetBool() || (RandomFloat(0.0,1.0) > 0.5) )
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{
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cmd.buttons |= bot_forceattack2.GetBool() ? IN_ATTACK2 : IN_ATTACK;
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}
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}
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}
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}
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}
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void Bot_SetForwardMovement( CSDKBot *pBot, CUserCmd &cmd )
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{
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if ( !pBot->IsEFlagSet(EFL_BOT_FROZEN) )
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{
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if ( pBot->m_iHealth == 100 )
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{
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cmd.forwardmove = 600 * ( pBot->m_bBackwards ? -1 : 1 );
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if ( pBot->m_flSideMove != 0.0f )
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{
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cmd.forwardmove *= random->RandomFloat( 0.1, 1.0f );
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}
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}
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else
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{
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// Stop when shot
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cmd.forwardmove = 0;
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}
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}
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}
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void Bot_HandleRespawn( CSDKBot *pBot, CUserCmd &cmd )
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{
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// Wait for Reinforcement wave
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if ( !pBot->IsAlive() )
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{
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// Try hitting my buttons occasionally
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if ( random->RandomInt( 0, 100 ) > 80 )
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{
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// Respawn the bot
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if ( random->RandomInt( 0, 1 ) == 0 )
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{
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cmd.buttons |= IN_JUMP;
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}
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else
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{
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cmd.buttons = 0;
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}
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}
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}
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}
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//-----------------------------------------------------------------------------
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// Run this Bot's AI for one frame.
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//-----------------------------------------------------------------------------
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void Bot_Think( CSDKBot *pBot )
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{
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// Make sure we stay being a bot
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pBot->AddFlag( FL_FAKECLIENT );
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CUserCmd cmd;
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Q_memset( &cmd, 0, sizeof( cmd ) );
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// Finally, override all this stuff if the bot is being forced to mimic a player.
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if ( !Bot_RunMimicCommand( cmd ) )
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{
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cmd.sidemove = pBot->m_flSideMove;
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if ( pBot->IsAlive() && (pBot->GetSolid() == SOLID_BBOX) )
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{
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Bot_SetForwardMovement( pBot, cmd );
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// Only turn if I haven't been hurt
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if ( !pBot->IsEFlagSet(EFL_BOT_FROZEN) && pBot->m_iHealth == 100 )
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{
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Bot_UpdateDirection( pBot );
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Bot_UpdateStrafing( pBot, cmd );
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}
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// Handle console settings.
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Bot_ForceFireWeapon( pBot, cmd );
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Bot_HandleSendCmd( pBot );
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}
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else
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{
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Bot_HandleRespawn( pBot, cmd );
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}
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Bot_FlipOut( pBot, cmd );
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cmd.viewangles = pBot->GetLocalAngles();
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cmd.upmove = 0;
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cmd.impulse = 0;
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}
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float frametime = gpGlobals->frametime;
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RunPlayerMove( pBot, cmd, frametime );
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}
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