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284 lines
8.1 KiB
284 lines
8.1 KiB
4 years ago
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//========= Copyright Valve Corporation, All rights reserved. ============//
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// tf_bot_payload_guard.cpp
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// Guard the payload and keep the attackers from getting near it
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// Michael Booth, April 2010
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#include "cbase.h"
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#include "nav_mesh.h"
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#include "tf_player.h"
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#include "tf_gamerules.h"
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#include "team_control_point_master.h"
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#include "team_train_watcher.h"
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#include "trigger_area_capture.h"
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#include "bot/tf_bot.h"
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#include "bot/behavior/scenario/payload/tf_bot_payload_guard.h"
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#include "bot/behavior/scenario/payload/tf_bot_payload_block.h"
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#include "bot/behavior/medic/tf_bot_medic_heal.h"
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#include "bot/behavior/engineer/tf_bot_engineer_build.h"
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#include "bot/behavior/demoman/tf_bot_prepare_stickybomb_trap.h"
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extern ConVar tf_bot_path_lookahead_range;
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ConVar tf_bot_payload_guard_range( "tf_bot_payload_guard_range", "1000", FCVAR_CHEAT );
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ConVar tf_bot_debug_payload_guard_vantage_points( "tf_bot_debug_payload_guard_vantage_points", 0, FCVAR_CHEAT );
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//---------------------------------------------------------------------------------------------
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ActionResult< CTFBot > CTFBotPayloadGuard::OnStart( CTFBot *me, Action< CTFBot > *priorAction )
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{
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m_path.SetMinLookAheadDistance( me->GetDesiredPathLookAheadRange() );
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m_path.Invalidate();
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m_vantagePoint = me->GetAbsOrigin();
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return Continue();
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}
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//---------------------------------------------------------------------------------------------
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ActionResult< CTFBot > CTFBotPayloadGuard::Update( CTFBot *me, float interval )
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{
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const CKnownEntity *threat = me->GetVisionInterface()->GetPrimaryKnownThreat();
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if ( threat && threat->IsVisibleRecently() )
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{
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// prepare to fight
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me->EquipBestWeaponForThreat( threat );
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}
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CTeamTrainWatcher *trainWatcher = TFGameRules()->GetPayloadToBlock( me->GetTeamNumber() );
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if ( !trainWatcher )
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{
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return Continue();
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}
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CBaseEntity *cart = trainWatcher->GetTrainEntity();
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if ( !cart )
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{
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return Continue();
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}
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if ( !trainWatcher->IsDisabled() && trainWatcher->GetCapturerCount() > 0 )
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{
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// the cart is being pushed ahead - block it
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if ( !m_moveToBlockTimer.HasStarted() )
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{
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m_moveToBlockTimer.Start( RandomFloat( 0.5f, 3.0f ) );
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}
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}
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if ( m_moveToBlockTimer.HasStarted() && m_moveToBlockTimer.IsElapsed() )
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{
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m_moveToBlockTimer.Invalidate();
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if ( trainWatcher->GetCapturerCount() >= 0 )
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{
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// the cart is not yet blocked - move to block it!
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return SuspendFor( new CTFBotPayloadBlock, "Moving to block the cart's forward motion" );
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}
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}
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bool isMovingToVantagePoint = ( me->GetAbsOrigin() - m_vantagePoint ).AsVector2D().IsLengthGreaterThan( 25.0f );
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if ( isMovingToVantagePoint )
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{
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// en route, don't change the point
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m_vantagePointTimer.Start( RandomFloat( 3.0f, 15.0f ) );
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}
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if ( !me->IsLineOfFireClear( cart ) )
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{
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// cart is no longer visible from this area, find another one
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m_vantagePointTimer.Invalidate();
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}
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if ( m_vantagePointTimer.IsElapsed() )
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{
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// find a new vantage point
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m_vantagePoint = FindVantagePoint( me, cart );
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m_repathTimer.Invalidate();
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isMovingToVantagePoint = true;
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}
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if ( isMovingToVantagePoint )
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{
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// update our path periodically
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if ( m_repathTimer.IsElapsed() )
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{
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CTFBotPathCost cost( me, DEFAULT_ROUTE );
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m_path.Compute( me, m_vantagePoint, cost );
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m_repathTimer.Start( RandomFloat( 0.5f, 1.0f ) );
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}
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// move towards our vantage point
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m_path.Update( me );
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}
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else
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{
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// at vantage point
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if ( CTFBotPrepareStickybombTrap::IsPossible( me ) )
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{
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return SuspendFor( new CTFBotPrepareStickybombTrap, "Laying sticky bombs!" );
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}
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}
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return Continue();
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}
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//---------------------------------------------------------------------------------------------
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ActionResult< CTFBot > CTFBotPayloadGuard::OnResume( CTFBot *me, Action< CTFBot > *interruptingAction )
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{
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VPROF_BUDGET( "CTFBotPayloadGuard::OnResume", "NextBot" );
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m_vantagePointTimer.Invalidate();
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m_repathTimer.Invalidate();
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return Continue();
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}
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//---------------------------------------------------------------------------------------------
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EventDesiredResult< CTFBot > CTFBotPayloadGuard::OnStuck( CTFBot *me )
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{
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VPROF_BUDGET( "CTFBotPayloadGuard::OnStuck", "NextBot" );
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m_repathTimer.Invalidate();
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me->GetLocomotionInterface()->ClearStuckStatus();
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return TryContinue();
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}
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//---------------------------------------------------------------------------------------------
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EventDesiredResult< CTFBot > CTFBotPayloadGuard::OnMoveToSuccess( CTFBot *me, const Path *path )
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{
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return TryContinue();
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}
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//---------------------------------------------------------------------------------------------
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EventDesiredResult< CTFBot > CTFBotPayloadGuard::OnMoveToFailure( CTFBot *me, const Path *path, MoveToFailureType reason )
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{
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VPROF_BUDGET( "CTFBotPayloadGuard::OnMoveToFailure", "NextBot" );
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m_vantagePointTimer.Invalidate();
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m_repathTimer.Invalidate();
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return TryContinue();
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}
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//---------------------------------------------------------------------------------------------
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// Invoked when cart is being pushed
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EventDesiredResult< CTFBot > CTFBotPayloadGuard::OnTerritoryContested( CTFBot *me, int territoryID )
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{
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return TryContinue();
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}
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//---------------------------------------------------------------------------------------------
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EventDesiredResult< CTFBot > CTFBotPayloadGuard::OnTerritoryCaptured( CTFBot *me, int territoryID )
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{
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return TryContinue();
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}
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//---------------------------------------------------------------------------------------------
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// Invoked when cart hits a checkpoint
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EventDesiredResult< CTFBot > CTFBotPayloadGuard::OnTerritoryLost( CTFBot *me, int territoryID )
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{
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return TryContinue();
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}
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//---------------------------------------------------------------------------------------------
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QueryResultType CTFBotPayloadGuard::ShouldRetreat( const INextBot *bot ) const
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{
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CTFBot *me = ToTFBot( bot->GetEntity() );
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CTeamTrainWatcher *trainWatcher = TFGameRules()->GetPayloadToBlock( me->GetTeamNumber() );
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if ( trainWatcher && trainWatcher->IsTrainNearCheckpoint() )
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{
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// don't retreat if the cart is almost at the next checkpoint
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return ANSWER_NO;
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}
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return ANSWER_UNDEFINED;
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}
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//---------------------------------------------------------------------------------------------
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QueryResultType CTFBotPayloadGuard::ShouldHurry( const INextBot *bot ) const
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{
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return ANSWER_UNDEFINED;
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}
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//---------------------------------------------------------------------------------------------
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class CCollectPayloadGuardVantagePoints : public ISearchSurroundingAreasFunctor
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{
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public:
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CCollectPayloadGuardVantagePoints( CTFBot *me, CBaseEntity *cart )
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{
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m_me = me;
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m_cart = cart;
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}
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virtual bool operator() ( CNavArea *baseArea, CNavArea *priorArea, float travelDistanceSoFar )
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{
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CTFNavArea *area = (CTFNavArea *)baseArea;
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// TODO: only use areas that are at/farther along than the payload
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trace_t trace;
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NextBotTraceFilterIgnoreActors filter( NULL, COLLISION_GROUP_NONE );
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const int tryCount = 3;
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for( int i=0; i<tryCount; ++i )
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{
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Vector spot = area->GetRandomPoint();
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Vector eyeSpot = Vector( spot.x, spot.y, spot.z + HumanEyeHeight );
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UTIL_TraceLine( eyeSpot, m_cart->WorldSpaceCenter(), MASK_SOLID_BRUSHONLY, &filter, &trace );
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if ( !trace.DidHit() || trace.m_pEnt == m_cart )
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{
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m_vantagePointVector.AddToTail( spot );
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if ( tf_bot_debug_payload_guard_vantage_points.GetBool() )
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{
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NDebugOverlay::Cross3D( spot, 5.0f, 255, 0, 255, true, 120.0f );
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}
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}
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}
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return true;
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}
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CTFBot *m_me;
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CBaseEntity *m_cart;
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CUtlVector< Vector > m_vantagePointVector;
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};
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//---------------------------------------------------------------------------------------------
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//
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// Find a tactically advantageous area where we can see the payload
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//
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Vector CTFBotPayloadGuard::FindVantagePoint( CTFBot *me, CBaseEntity *cart )
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{
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CTFNavArea *cartArea = (CTFNavArea *)TheNavMesh->GetNearestNavArea( cart );
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CCollectPayloadGuardVantagePoints collect( me, cart );
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SearchSurroundingAreas( cartArea, collect, tf_bot_payload_guard_range.GetFloat() );
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if ( collect.m_vantagePointVector.Count() == 0 )
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return cart->WorldSpaceCenter();
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int which = RandomInt( 0, collect.m_vantagePointVector.Count()-1 );
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return collect.m_vantagePointVector[ which ];
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}
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