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711 lines
17 KiB
711 lines
17 KiB
//========= Copyright Valve Corporation, All rights reserved. ============// |
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// |
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// Purpose: |
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// |
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// $NoKeywords: $ |
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// |
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//=============================================================================// |
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// nav_entities.cpp |
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// AI Navigation entities |
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// Author: Michael S. Booth (mike@turtlerockstudios.com), January 2003 |
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#include "cbase.h" |
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#include "nav_mesh.h" |
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#include "nav_node.h" |
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#include "nav_pathfind.h" |
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#include "nav_colors.h" |
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#include "fmtstr.h" |
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#include "props_shared.h" |
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#include "func_breakablesurf.h" |
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#ifdef TERROR |
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#include "func_elevator.h" |
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#include "AmbientLight.h" |
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#endif |
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#ifdef TF_DLL |
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#include "tf_player.h" |
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#include "bot/tf_bot.h" |
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#endif |
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#include "Color.h" |
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#include "collisionutils.h" |
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#include "functorutils.h" |
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#include "team.h" |
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#include "nav_entities.h" |
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// memdbgon must be the last include file in a .cpp file!!! |
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#include "tier0/memdbgon.h" |
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//-------------------------------------------------------------------------------------------------------- |
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//-------------------------------------------------------------------------------------------------------- |
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BEGIN_DATADESC( CFuncNavCost ) |
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// Inputs |
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DEFINE_INPUTFUNC( FIELD_VOID, "Enable", InputEnable ), |
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DEFINE_INPUTFUNC( FIELD_VOID, "Disable", InputDisable ), |
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DEFINE_KEYFIELD( m_iszTags, FIELD_STRING, "tags" ), |
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DEFINE_KEYFIELD( m_team, FIELD_INTEGER, "team" ), |
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DEFINE_KEYFIELD( m_isDisabled, FIELD_BOOLEAN, "start_disabled" ), |
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DEFINE_THINKFUNC( CostThink ), |
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END_DATADESC() |
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LINK_ENTITY_TO_CLASS( func_nav_avoid, CFuncNavAvoid ); |
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LINK_ENTITY_TO_CLASS( func_nav_prefer, CFuncNavPrefer ); |
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CUtlVector< CHandle< CFuncNavCost > > CFuncNavCost::gm_masterCostVector; |
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CountdownTimer CFuncNavCost::gm_dirtyTimer; |
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#define UPDATE_DIRTY_TIME 0.2f |
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//-------------------------------------------------------------------------------------------------------- |
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void CFuncNavCost::Spawn( void ) |
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{ |
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BaseClass::Spawn(); |
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gm_masterCostVector.AddToTail( this ); |
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gm_dirtyTimer.Start( UPDATE_DIRTY_TIME ); |
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SetSolid( SOLID_BSP ); |
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AddSolidFlags( FSOLID_NOT_SOLID ); |
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SetMoveType( MOVETYPE_NONE ); |
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SetModel( STRING( GetModelName() ) ); |
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AddEffects( EF_NODRAW ); |
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SetCollisionGroup( COLLISION_GROUP_NONE ); |
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VPhysicsInitShadow( false, false ); |
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SetThink( &CFuncNavCost::CostThink ); |
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SetNextThink( gpGlobals->curtime + UPDATE_DIRTY_TIME ); |
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m_tags.RemoveAll(); |
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const char *tags = STRING( m_iszTags ); |
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// chop space-delimited string into individual tokens |
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if ( tags ) |
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{ |
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char *buffer = V_strdup ( tags ); |
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for( char *token = strtok( buffer, " " ); token; token = strtok( NULL, " " ) ) |
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{ |
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m_tags.AddToTail( CFmtStr( "%s", token ) ); |
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} |
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delete [] buffer; |
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} |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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void CFuncNavCost::UpdateOnRemove( void ) |
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{ |
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gm_masterCostVector.FindAndFastRemove( this ); |
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BaseClass::UpdateOnRemove(); |
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gm_dirtyTimer.Start( UPDATE_DIRTY_TIME ); |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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void CFuncNavCost::InputEnable( inputdata_t &inputdata ) |
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{ |
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m_isDisabled = false; |
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gm_dirtyTimer.Start( UPDATE_DIRTY_TIME ); |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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void CFuncNavCost::InputDisable( inputdata_t &inputdata ) |
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{ |
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m_isDisabled = true; |
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gm_dirtyTimer.Start( UPDATE_DIRTY_TIME ); |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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void CFuncNavCost::CostThink( void ) |
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{ |
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SetNextThink( gpGlobals->curtime + UPDATE_DIRTY_TIME ); |
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if ( gm_dirtyTimer.HasStarted() && gm_dirtyTimer.IsElapsed() ) |
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{ |
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// one or more avoid entities have changed - update nav decoration |
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gm_dirtyTimer.Invalidate(); |
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UpdateAllNavCostDecoration(); |
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} |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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bool CFuncNavCost::HasTag( const char *groupname ) const |
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{ |
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for( int i=0; i<m_tags.Count(); ++i ) |
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{ |
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if ( FStrEq( m_tags[i], groupname ) ) |
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{ |
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return true; |
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} |
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} |
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return false; |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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// Return true if this cost applies to the given actor |
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bool CFuncNavCost::IsApplicableTo( CBaseCombatCharacter *who ) const |
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{ |
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if ( !who ) |
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{ |
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return false; |
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} |
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if ( m_team > 0 ) |
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{ |
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if ( who->GetTeamNumber() != m_team ) |
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{ |
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return false; |
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} |
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} |
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#ifdef TF_DLL |
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// TODO: Make group comparison efficient and move to base combat character |
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CTFBot *bot = ToTFBot( who ); |
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if ( bot ) |
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{ |
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if ( bot->HasTheFlag() ) |
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{ |
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if ( HasTag( "bomb_carrier" ) ) |
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{ |
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return true; |
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} |
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// check custom bomb_carrier tags for this bot |
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for( int i=0; i<m_tags.Count(); ++i ) |
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{ |
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const char* pszTag = m_tags[i]; |
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if ( V_stristr( pszTag, "bomb_carrier" ) ) |
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{ |
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if ( bot->HasTag( pszTag ) ) |
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{ |
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return true; |
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} |
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} |
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} |
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// the bomb carrier only pays attention to bomb_carrier costs |
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return false; |
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} |
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if ( bot->HasMission( CTFBot::MISSION_DESTROY_SENTRIES ) ) |
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{ |
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if ( HasTag( "mission_sentry_buster" ) ) |
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{ |
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return true; |
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} |
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} |
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if ( bot->HasMission( CTFBot::MISSION_SNIPER ) ) |
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{ |
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if ( HasTag( "mission_sniper" ) ) |
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{ |
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return true; |
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} |
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} |
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if ( bot->HasMission( CTFBot::MISSION_SPY ) ) |
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{ |
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if ( HasTag( "mission_spy" ) ) |
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{ |
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return true; |
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} |
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} |
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if ( bot->HasMission( CTFBot::MISSION_REPROGRAMMED ) ) |
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{ |
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return false; |
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} |
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if ( !bot->IsOnAnyMission() ) |
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{ |
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if ( HasTag( "common" ) ) |
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{ |
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return true; |
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} |
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} |
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if ( HasTag( bot->GetPlayerClass()->GetName() ) ) |
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{ |
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return true; |
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} |
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// check custom tags for this bot |
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for( int i=0; i<m_tags.Count(); ++i ) |
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{ |
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if ( bot->HasTag( m_tags[i] ) ) |
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{ |
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return true; |
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} |
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} |
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// this cost doesn't apply to me |
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return false; |
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} |
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#endif |
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return false; |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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// Reevaluate all func_nav_cost entities and update the nav decoration accordingly. |
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// This is required to handle overlapping func_nav_cost entities. |
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void CFuncNavCost::UpdateAllNavCostDecoration( void ) |
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{ |
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int i, j; |
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// first, clear all avoid decoration from the mesh |
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for( i=0; i<TheNavAreas.Count(); ++i ) |
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{ |
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TheNavAreas[i]->ClearAllNavCostEntities(); |
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} |
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// now, mark all areas with active cost entities overlapping them |
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for( i=0; i<gm_masterCostVector.Count(); ++i ) |
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{ |
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CFuncNavCost *cost = gm_masterCostVector[i]; |
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if ( !cost || !cost->IsEnabled() ) |
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{ |
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continue; |
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} |
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Extent extent; |
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extent.Init( cost ); |
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CUtlVector< CNavArea * > overlapVector; |
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TheNavMesh->CollectAreasOverlappingExtent( extent, &overlapVector ); |
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Ray_t ray; |
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trace_t tr; |
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ICollideable *pCollide = cost->CollisionProp(); |
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for( j=0; j<overlapVector.Count(); ++j ) |
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{ |
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ray.Init( overlapVector[j]->GetCenter(), overlapVector[j]->GetCenter() ); |
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enginetrace->ClipRayToCollideable( ray, MASK_ALL, pCollide, &tr ); |
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if ( tr.startsolid ) |
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{ |
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overlapVector[j]->AddFuncNavCostEntity( cost ); |
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} |
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} |
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} |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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//-------------------------------------------------------------------------------------------------------- |
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// Return pathfind cost multiplier for the given actor |
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float CFuncNavAvoid::GetCostMultiplier( CBaseCombatCharacter *who ) const |
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{ |
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if ( IsApplicableTo( who ) ) |
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{ |
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return 25.0f; |
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} |
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return 1.0f; |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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//-------------------------------------------------------------------------------------------------------- |
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// Return pathfind cost multiplier for the given actor |
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float CFuncNavPrefer::GetCostMultiplier( CBaseCombatCharacter *who ) const |
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{ |
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if ( IsApplicableTo( who ) ) |
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{ |
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return 0.04f; // 1/25th |
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} |
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return 1.0f; |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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//-------------------------------------------------------------------------------------------------------- |
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BEGIN_DATADESC( CFuncNavBlocker ) |
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// Inputs |
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DEFINE_INPUTFUNC( FIELD_VOID, "BlockNav", InputBlockNav ), |
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DEFINE_INPUTFUNC( FIELD_VOID, "UnblockNav", InputUnblockNav ), |
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DEFINE_KEYFIELD( m_blockedTeamNumber, FIELD_INTEGER, "teamToBlock" ), |
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DEFINE_KEYFIELD( m_bDisabled, FIELD_BOOLEAN, "StartDisabled" ), |
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END_DATADESC() |
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LINK_ENTITY_TO_CLASS( func_nav_blocker, CFuncNavBlocker ); |
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CUtlLinkedList<CFuncNavBlocker *> CFuncNavBlocker::gm_NavBlockers; |
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//----------------------------------------------------------------------------------------------------- |
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int CFuncNavBlocker::DrawDebugTextOverlays( void ) |
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{ |
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int offset = BaseClass::DrawDebugTextOverlays(); |
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if (m_debugOverlays & OVERLAY_TEXT_BIT) |
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{ |
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CFmtStr str; |
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// FIRST_GAME_TEAM skips TEAM_SPECTATOR and TEAM_UNASSIGNED, so we can print |
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// useful team names in a non-game-specific fashion. |
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for ( int i=FIRST_GAME_TEAM; i<FIRST_GAME_TEAM + MAX_NAV_TEAMS; ++i ) |
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{ |
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if ( IsBlockingNav( i ) ) |
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{ |
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CTeam *team = GetGlobalTeam( i ); |
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if ( team ) |
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{ |
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EntityText( offset++, str.sprintf( "blocking team %s", team->GetName() ), 0 ); |
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} |
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else |
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{ |
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EntityText( offset++, str.sprintf( "blocking team %d", i ), 0 ); |
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} |
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} |
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} |
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NavAreaCollector collector( true ); |
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Extent extent; |
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extent.Init( this ); |
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TheNavMesh->ForAllAreasOverlappingExtent( collector, extent ); |
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for ( int i=0; i<collector.m_area.Count(); ++i ) |
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{ |
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CNavArea *area = collector.m_area[i]; |
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Extent areaExtent; |
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area->GetExtent( &areaExtent ); |
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if ( debugoverlay ) |
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{ |
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debugoverlay->AddBoxOverlay( vec3_origin, areaExtent.lo, areaExtent.hi, vec3_angle, 0, 255, 0, 10, NDEBUG_PERSIST_TILL_NEXT_SERVER ); |
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} |
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} |
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} |
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return offset; |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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void CFuncNavBlocker::UpdateBlocked() |
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{ |
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NavAreaCollector collector( true ); |
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Extent extent; |
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extent.Init( this ); |
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TheNavMesh->ForAllAreasOverlappingExtent( collector, extent ); |
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for ( int i=0; i<collector.m_area.Count(); ++i ) |
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{ |
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CNavArea *area = collector.m_area[i]; |
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area->UpdateBlocked( true ); |
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} |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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// Forces nav areas to unblock when the nav blocker is deleted (round restart) so flow can compute properly |
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void CFuncNavBlocker::UpdateOnRemove( void ) |
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{ |
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UnblockNav(); |
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gm_NavBlockers.FindAndRemove( this ); |
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BaseClass::UpdateOnRemove(); |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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void CFuncNavBlocker::Spawn( void ) |
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{ |
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gm_NavBlockers.AddToTail( this ); |
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if ( !m_blockedTeamNumber ) |
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m_blockedTeamNumber = TEAM_ANY; |
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SetMoveType( MOVETYPE_NONE ); |
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SetModel( STRING( GetModelName() ) ); |
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AddEffects( EF_NODRAW ); |
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SetCollisionGroup( COLLISION_GROUP_NONE ); |
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SetSolid( SOLID_NONE ); |
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AddSolidFlags( FSOLID_NOT_SOLID ); |
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CollisionProp()->WorldSpaceAABB( &m_CachedMins, &m_CachedMaxs ); |
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if ( m_bDisabled ) |
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{ |
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UnblockNav(); |
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} |
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else |
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{ |
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BlockNav(); |
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} |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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void CFuncNavBlocker::InputBlockNav( inputdata_t &inputdata ) |
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{ |
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BlockNav(); |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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void CFuncNavBlocker::InputUnblockNav( inputdata_t &inputdata ) |
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{ |
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UnblockNav(); |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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void CFuncNavBlocker::BlockNav( void ) |
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{ |
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if ( m_blockedTeamNumber == TEAM_ANY ) |
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{ |
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for ( int i=0; i<MAX_NAV_TEAMS; ++i ) |
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{ |
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m_isBlockingNav[ i ] = true; |
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} |
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} |
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else |
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{ |
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int teamNumber = m_blockedTeamNumber % MAX_NAV_TEAMS; |
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m_isBlockingNav[ teamNumber ] = true; |
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} |
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Extent extent; |
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extent.Init( this ); |
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TheNavMesh->ForAllAreasOverlappingExtent( *this, extent ); |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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void CFuncNavBlocker::UnblockNav( void ) |
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{ |
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if ( m_blockedTeamNumber == TEAM_ANY ) |
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{ |
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for ( int i=0; i<MAX_NAV_TEAMS; ++i ) |
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{ |
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m_isBlockingNav[ i ] = false; |
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} |
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} |
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else |
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{ |
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int teamNumber = m_blockedTeamNumber % MAX_NAV_TEAMS; |
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m_isBlockingNav[ teamNumber ] = false; |
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} |
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UpdateBlocked(); |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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// functor that blocks areas in our extent |
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bool CFuncNavBlocker::operator()( CNavArea *area ) |
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{ |
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area->MarkAsBlocked( m_blockedTeamNumber, this ); |
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return true; |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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bool CFuncNavBlocker::CalculateBlocked( bool *pResultByTeam, const Vector &vecMins, const Vector &vecMaxs ) |
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{ |
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int nTeamsBlocked = 0; |
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int i; |
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bool bBlocked = false; |
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for ( i=0; i<MAX_NAV_TEAMS; ++i ) |
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{ |
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pResultByTeam[i] = false; |
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} |
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FOR_EACH_LL( gm_NavBlockers, iBlocker ) |
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{ |
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CFuncNavBlocker *pBlocker = gm_NavBlockers[iBlocker]; |
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bool bIsIntersecting = false; |
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for ( i=0; i<MAX_NAV_TEAMS; ++i ) |
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{ |
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if ( pBlocker->m_isBlockingNav[i] ) |
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{ |
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if ( !pResultByTeam[i] ) |
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{ |
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if ( bIsIntersecting || ( bIsIntersecting = IsBoxIntersectingBox( pBlocker->m_CachedMins, pBlocker->m_CachedMaxs, vecMins, vecMaxs ) ) != false ) |
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{ |
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bBlocked = true; |
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pResultByTeam[i] = true; |
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nTeamsBlocked++; |
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} |
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else |
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{ |
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continue; |
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} |
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} |
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} |
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} |
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if ( nTeamsBlocked == MAX_NAV_TEAMS ) |
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{ |
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break; |
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} |
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} |
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return bBlocked; |
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} |
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//----------------------------------------------------------------------------------------------------- |
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/** |
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* An entity that can obstruct nav areas. This is meant for semi-transient areas that obstruct |
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* pathfinding but can be ignored for longer-term queries like computing L4D flow distances and |
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* escape routes. |
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*/ |
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class CFuncNavObstruction : public CBaseEntity, public INavAvoidanceObstacle |
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{ |
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DECLARE_DATADESC(); |
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DECLARE_CLASS( CFuncNavObstruction, CBaseEntity ); |
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public: |
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void Spawn(); |
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virtual void UpdateOnRemove( void ); |
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void InputEnable( inputdata_t &inputdata ); |
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void InputDisable( inputdata_t &inputdata ); |
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virtual bool IsPotentiallyAbleToObstructNavAreas( void ) const { return true; } // could we at some future time obstruct nav? |
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virtual float GetNavObstructionHeight( void ) const { return JumpCrouchHeight; } // height at which to obstruct nav areas |
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virtual bool CanObstructNavAreas( void ) const { return !m_bDisabled; } // can we obstruct nav right this instant? |
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virtual CBaseEntity *GetObstructingEntity( void ) { return this; } |
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virtual void OnNavMeshLoaded( void ) |
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{ |
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if ( !m_bDisabled ) |
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{ |
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ObstructNavAreas(); |
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} |
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} |
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int DrawDebugTextOverlays( void ); |
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bool operator()( CNavArea *area ); // functor that obstructs areas in our extent |
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private: |
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void ObstructNavAreas( void ); |
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bool m_bDisabled; |
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}; |
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//-------------------------------------------------------------------------------------------------------- |
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BEGIN_DATADESC( CFuncNavObstruction ) |
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DEFINE_KEYFIELD( m_bDisabled, FIELD_BOOLEAN, "StartDisabled" ), |
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END_DATADESC() |
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LINK_ENTITY_TO_CLASS( func_nav_avoidance_obstacle, CFuncNavObstruction ); |
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//----------------------------------------------------------------------------------------------------- |
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int CFuncNavObstruction::DrawDebugTextOverlays( void ) |
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{ |
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int offset = BaseClass::DrawDebugTextOverlays(); |
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if (m_debugOverlays & OVERLAY_TEXT_BIT) |
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{ |
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if ( CanObstructNavAreas() ) |
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{ |
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EntityText( offset++, "Obstructing nav", NDEBUG_PERSIST_TILL_NEXT_SERVER ); |
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} |
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else |
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{ |
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EntityText( offset++, "Not obstructing nav", NDEBUG_PERSIST_TILL_NEXT_SERVER ); |
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} |
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} |
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return offset; |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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void CFuncNavObstruction::UpdateOnRemove( void ) |
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{ |
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TheNavMesh->UnregisterAvoidanceObstacle( this ); |
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BaseClass::UpdateOnRemove(); |
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} |
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//-------------------------------------------------------------------------------------------------------- |
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void CFuncNavObstruction::Spawn( void ) |
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{ |
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SetMoveType( MOVETYPE_NONE ); |
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SetModel( STRING( GetModelName() ) ); |
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AddEffects( EF_NODRAW ); |
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SetCollisionGroup( COLLISION_GROUP_NONE ); |
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SetSolid( SOLID_NONE ); |
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AddSolidFlags( FSOLID_NOT_SOLID ); |
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if ( !m_bDisabled ) |
|
{ |
|
ObstructNavAreas(); |
|
TheNavMesh->RegisterAvoidanceObstacle( this ); |
|
} |
|
} |
|
|
|
|
|
//-------------------------------------------------------------------------------------------------------- |
|
void CFuncNavObstruction::InputEnable( inputdata_t &inputdata ) |
|
{ |
|
m_bDisabled = false; |
|
ObstructNavAreas(); |
|
TheNavMesh->RegisterAvoidanceObstacle( this ); |
|
} |
|
|
|
|
|
//-------------------------------------------------------------------------------------------------------- |
|
void CFuncNavObstruction::InputDisable( inputdata_t &inputdata ) |
|
{ |
|
m_bDisabled = true; |
|
TheNavMesh->UnregisterAvoidanceObstacle( this ); |
|
} |
|
|
|
|
|
//-------------------------------------------------------------------------------------------------------- |
|
void CFuncNavObstruction::ObstructNavAreas( void ) |
|
{ |
|
Extent extent; |
|
extent.Init( this ); |
|
TheNavMesh->ForAllAreasOverlappingExtent( *this, extent ); |
|
} |
|
|
|
|
|
//-------------------------------------------------------------------------------------------------------- |
|
// functor that blocks areas in our extent |
|
bool CFuncNavObstruction::operator()( CNavArea *area ) |
|
{ |
|
area->MarkObstacleToAvoid( GetNavObstructionHeight() ); |
|
return true; |
|
} |
|
|
|
|
|
//--------------------------------------------------------------------------------------------------------------
|
|
|