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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//=============================================================================//
#include "cbase.h"
#include "ai_behavior_functank.h"
#include "ai_navigator.h"
#include "ai_memory.h"
#include "ai_senses.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
// How long to fire a func tank before running schedule selection again.
#define FUNCTANK_FIRE_TIME 5.0f
BEGIN_DATADESC( CAI_FuncTankBehavior ) DEFINE_FIELD( m_hFuncTank, FIELD_EHANDLE ), DEFINE_FIELD( m_bMounted, FIELD_BOOLEAN ), DEFINE_FIELD( m_flBusyTime, FIELD_TIME ), DEFINE_FIELD( m_bSpottedPlayerOutOfCover, FIELD_BOOLEAN ), END_DATADESC();
//-----------------------------------------------------------------------------
// Purpose: Constructor
//--k---------------------------------------------------------------------------
CAI_FuncTankBehavior::CAI_FuncTankBehavior() { m_hFuncTank = NULL; m_bMounted = false; m_flBusyTime = 0.0f; m_bSpottedPlayerOutOfCover = false; }
//-----------------------------------------------------------------------------
// Purpose: Deconstructor
//-----------------------------------------------------------------------------
CAI_FuncTankBehavior::~CAI_FuncTankBehavior() { }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
bool CAI_FuncTankBehavior::CanSelectSchedule() { // If we don't have a func_tank do not bother with conditions, schedules, etc.
if ( !m_hFuncTank ) return false;
// Are you alive, in a script?
if ( !GetOuter()->IsInterruptable() ) return false; // Commander is giving you orders?
if ( GetOuter()->HasCondition( COND_RECEIVED_ORDERS ) ) return false; return true; }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CAI_FuncTankBehavior::BeginScheduleSelection() { }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CAI_FuncTankBehavior::EndScheduleSelection() { if ( m_bMounted ) { Dismount(); } }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CAI_FuncTankBehavior::PrescheduleThink() { BaseClass::PrescheduleThink();
if ( !HasCondition(COND_SEE_PLAYER) ) { m_bSpottedPlayerOutOfCover = false; } }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
int CAI_FuncTankBehavior::SelectSchedule() { // This shouldn't get called with an m_hFuncTank, see CanSelectSchedule.
Assert( m_hFuncTank );
// If we've been told to dismount, or we are out of ammo - dismount.
if ( HasCondition( COND_FUNCTANK_DISMOUNT ) || m_hFuncTank->GetAmmoCount() == 0 ) { if ( m_bMounted ) { Dismount(); }
return BaseClass::SelectSchedule(); }
// If we are not mounted to a func_tank look for one.
if ( !IsMounted() ) { return SCHED_MOVE_TO_FUNCTANK; }
// If we have an enemy, it's in the viewcone & we have LOS to it
if ( GetEnemy() ) { // Tell the func tank whenever we see the player for the first time since not seeing him for a while
if ( HasCondition( COND_NEW_ENEMY ) && GetEnemy()->IsPlayer() && !m_bSpottedPlayerOutOfCover ) { m_bSpottedPlayerOutOfCover = true; m_hFuncTank->NPC_JustSawPlayer( GetEnemy() ); }
// Fire at the enemy.
return SCHED_FIRE_FUNCTANK; } else { // Scan for enemies.
return SCHED_SCAN_WITH_FUNCTANK; }
return SCHED_IDLE_STAND; }
//-----------------------------------------------------------------------------
// Purpose:
// Input : activity -
// Output : Activity
//-----------------------------------------------------------------------------
Activity CAI_FuncTankBehavior::NPC_TranslateActivity( Activity activity ) { // If I'm on the gun, I play the idle manned gun animation
if ( m_bMounted ) return ACT_IDLE_MANNEDGUN;
return BaseClass::NPC_TranslateActivity( activity ); }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CAI_FuncTankBehavior::Dismount( void ) { SetBusy( gpGlobals->curtime + AI_FUNCTANK_BEHAVIOR_BUSYTIME );
Assert( m_hFuncTank );
if ( m_hFuncTank ) { GetOuter()->SpeakSentence( FUNCTANK_SENTENCE_DISMOUNTING );
Assert( m_hFuncTank->IsMarkedForDeletion() || m_hFuncTank->GetController() == GetOuter() ); m_hFuncTank->NPC_SetInRoute( false ); if ( m_hFuncTank->GetController() == GetOuter() ) m_hFuncTank->StopControl(); SetFuncTank( NULL ); }
GetOuter()->SetDesiredWeaponState( DESIREDWEAPONSTATE_UNHOLSTERED );
m_bMounted = false;
// Set this condition to force breakout of any func_tank behavior schedules
SetCondition( COND_FUNCTANK_DISMOUNT ); }
//-----------------------------------------------------------------------------
// Purpose:
// Input :
// Output :
//-----------------------------------------------------------------------------
int CAI_FuncTankBehavior::OnTakeDamage_Alive( const CTakeDamageInfo &info ) { int iResult = BaseClass::OnTakeDamage_Alive( info ); if ( !iResult ) return 0;
// If we've been hit by the player, and the player's not targetable
// by our func_tank, get off the tank.
CBaseEntity *pAttacker = info.GetAttacker(); bool bValidDismountAttacker = (pAttacker && pAttacker->IsPlayer());
#ifdef HL2_EPISODIC
bValidDismountAttacker = true; #endif
if ( m_hFuncTank && bValidDismountAttacker == true ) { if ( !m_hFuncTank->IsEntityInViewCone( pAttacker ) ) { SetCondition( COND_FUNCTANK_DISMOUNT ); } }
return iResult; }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CAI_FuncTankBehavior::StartTask( const Task_t *pTask ) { switch ( pTask->iTask ) { case TASK_FUNCTANK_ANNOUNCE_SCAN: { if ( random->RandomInt( 0, 3 ) == 0 ) { GetOuter()->SpeakSentence( FUNCTANK_SENTENCE_SCAN_FOR_ENEMIES ); } TaskComplete(); } break;
case TASK_GET_PATH_TO_FUNCTANK: { if ( !m_hFuncTank ) { TaskFail( FAIL_NO_TARGET ); return; }
Vector vecManPos; m_hFuncTank->NPC_FindManPoint( vecManPos ); AI_NavGoal_t goal( vecManPos ); goal.pTarget = m_hFuncTank; if ( GetNavigator()->SetGoal( goal ) ) { GetNavigator()->SetArrivalDirection( m_hFuncTank->GetAbsAngles() ); TaskComplete(); } else { TaskFail("NO PATH");
// Don't try and use me again for a while
SetBusy( gpGlobals->curtime + AI_FUNCTANK_BEHAVIOR_BUSYTIME ); } break; } case TASK_FACE_FUNCTANK: { if ( !m_hFuncTank ) { TaskFail( FAIL_NO_TARGET ); return; } // Ensure we've reached the func_tank
Vector vecManPos; m_hFuncTank->NPC_FindManPoint( vecManPos );
// More leniency in Z.
Vector vecDelta = (vecManPos - GetAbsOrigin()); if ( fabs(vecDelta.x) > 16 || fabs(vecDelta.y) > 16 || fabs(vecDelta.z) > 48 ) { TaskFail( "Not correctly on func_tank man point" ); m_hFuncTank->NPC_InterruptRoute(); return; }
GetMotor()->SetIdealYawToTarget( m_hFuncTank->GetAbsOrigin() ); GetOuter()->SetTurnActivity(); break; }
case TASK_HOLSTER_WEAPON: { if ( !m_hFuncTank ) { TaskFail( FAIL_NO_TARGET ); return; }
if ( GetOuter()->IsWeaponHolstered() || !GetOuter()->CanHolsterWeapon() ) { GetOuter()->SpeakSentence( FUNCTANK_SENTENCE_JUST_MOUNTED );
// We are at the correct position and facing for the func_tank, mount it.
m_hFuncTank->StartControl( GetOuter() ); GetOuter()->ClearEnemyMemory(); m_bMounted = true; TaskComplete();
GetOuter()->SetIdealActivity( ACT_IDLE_MANNEDGUN ); } else { GetOuter()->SetDesiredWeaponState( DESIREDWEAPONSTATE_HOLSTERED ); } break; }
case TASK_FIRE_FUNCTANK: { if ( !m_hFuncTank ) { TaskFail( FAIL_NO_TARGET ); return; } GetOuter()->m_flWaitFinished = gpGlobals->curtime + FUNCTANK_FIRE_TIME; break; } case TASK_SCAN_LEFT_FUNCTANK: { if ( !m_hFuncTank ) { TaskFail( FAIL_NO_TARGET ); return; }
GetMotor()->SetIdealYawToTarget( m_hFuncTank->GetAbsOrigin() );
float flCenterYaw = m_hFuncTank->YawCenterWorld(); float flYawRange = m_hFuncTank->YawRange(); float flScanAmount = random->RandomFloat( 0, flYawRange ); QAngle vecTargetAngles( 0, UTIL_AngleMod( flCenterYaw + flScanAmount ), 0 );
/*
float flCenterPitch = m_hFuncTank->YawCenterWorld(); float flPitchRange = m_hFuncTank->PitchRange(); float flPitch = random->RandomFloat( -flPitchRange, flPitchRange ); QAngle vecTargetAngles( flCenterPitch + flPitch, UTIL_AngleMod( flCenterYaw + flScanAmount ), 0 ); */
Vector vecTargetForward; AngleVectors( vecTargetAngles, &vecTargetForward ); Vector vecTarget = GetOuter()->EyePosition() + (vecTargetForward * 256); GetOuter()->AddLookTarget( vecTarget, 1.0, 2.0, 0.2 );
m_hFuncTank->NPC_SetIdleAngle( vecTarget );
break; } case TASK_SCAN_RIGHT_FUNCTANK: { if ( !m_hFuncTank ) { TaskFail( FAIL_NO_TARGET ); return; }
GetMotor()->SetIdealYawToTarget( m_hFuncTank->GetAbsOrigin() );
float flCenterYaw = m_hFuncTank->YawCenterWorld(); float flYawRange = m_hFuncTank->YawRange(); float flScanAmount = random->RandomFloat( 0, flYawRange ); QAngle vecTargetAngles( 0, UTIL_AngleMod( flCenterYaw - flScanAmount ), 0 );
/*
float flCenterPitch = m_hFuncTank->YawCenterWorld(); float flPitchRange = m_hFuncTank->PitchRange(); float flPitch = random->RandomFloat( -flPitchRange, flPitchRange ); QAngle vecTargetAngles( flCenterPitch + flPitch, UTIL_AngleMod( flCenterYaw - flScanAmount ), 0 ); */
Vector vecTargetForward; AngleVectors( vecTargetAngles, &vecTargetForward ); Vector vecTarget = GetOuter()->EyePosition() + (vecTargetForward * 256); GetOuter()->AddLookTarget( vecTarget, 1.0, 2.0, 0.2 );
m_hFuncTank->NPC_SetIdleAngle( vecTarget );
break; } case TASK_FORGET_ABOUT_FUNCTANK: { if ( !m_hFuncTank ) { TaskFail( FAIL_NO_TARGET ); return; } break; } default: { BaseClass::StartTask( pTask ); break; } } }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CAI_FuncTankBehavior::RunTask( const Task_t *pTask ) { switch ( pTask->iTask ) { case TASK_FACE_FUNCTANK: { Assert( m_hFuncTank );
GetMotor()->UpdateYaw();
if ( GetOuter()->FacingIdeal() ) { TaskComplete(); } break; } case TASK_HOLSTER_WEAPON: { Assert( m_hFuncTank );
if ( GetOuter()->IsWeaponHolstered() ) { GetOuter()->SpeakSentence( FUNCTANK_SENTENCE_JUST_MOUNTED );
// We are at the correct position and facing for the func_tank, mount it.
m_hFuncTank->StartControl( GetOuter() ); GetOuter()->ClearEnemyMemory(); m_bMounted = true; TaskComplete();
GetOuter()->SetIdealActivity( ACT_IDLE_MANNEDGUN ); }
break; } case TASK_FIRE_FUNCTANK: { Assert( m_hFuncTank );
if( GetOuter()->m_flWaitFinished < gpGlobals->curtime ) { TaskComplete(); }
if ( m_hFuncTank->NPC_HasEnemy() ) { GetOuter()->SetLastAttackTime( gpGlobals->curtime ); m_hFuncTank->NPC_Fire();
// The NPC may have decided to stop using the func_tank, because it's out of ammo.
if ( !m_hFuncTank ) { TaskComplete(); break; } } else { TaskComplete(); } Assert( m_hFuncTank );
if ( m_hFuncTank->GetAmmoCount() == 0 ) { TaskComplete(); } break; } case TASK_SCAN_LEFT_FUNCTANK: case TASK_SCAN_RIGHT_FUNCTANK: { GetMotor()->UpdateYaw(); if ( GetOuter()->FacingIdeal() ) { TaskComplete(); } break; } case TASK_FORGET_ABOUT_FUNCTANK: { m_hFuncTank->NPC_InterruptRoute(); SetBusy( gpGlobals->curtime + AI_FUNCTANK_BEHAVIOR_BUSYTIME ); TaskComplete(); break; } default: { BaseClass::RunTask( pTask ); break; } } }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CAI_FuncTankBehavior::Event_Killed( const CTakeDamageInfo &info ) { if ( m_hFuncTank ) { Dismount(); } Assert( !m_hFuncTank );
BaseClass::Event_Killed( info ); }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CAI_FuncTankBehavior::UpdateOnRemove( void ) { if ( m_hFuncTank ) { Dismount(); }
BaseClass::UpdateOnRemove(); }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CAI_FuncTankBehavior::SetFuncTank( CHandle<CFuncTank> hFuncTank ) { if ( m_hFuncTank && !hFuncTank ) { SetBusy( gpGlobals->curtime + AI_FUNCTANK_BEHAVIOR_BUSYTIME ); SetCondition( COND_FUNCTANK_DISMOUNT ); }
m_hFuncTank = hFuncTank; GetOuter()->ClearSchedule( "Setting a new func_tank" ); }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CAI_FuncTankBehavior::AimGun( void ) { if ( m_bMounted && m_hFuncTank) { Vector vecForward; AngleVectors( m_hFuncTank->GetAbsAngles(), &vecForward ); GetOuter()->SetAim( vecForward ); return; }
BaseClass::AimGun(); }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CAI_FuncTankBehavior::GatherConditions() { BaseClass::GatherConditions();
// Since we can't pathfind, if we can't see the enemy, he's eluded us
// So we deliberately ignore unreachability
if ( GetEnemy() && !HasCondition(COND_SEE_ENEMY) ) { if ( gpGlobals->curtime - GetOuter()->GetEnemyLastTimeSeen() >= 3.0f ) { GetOuter()->MarkEnemyAsEluded(); } }
if ( !m_hFuncTank ) { m_bMounted = false; GetOuter()->SetDesiredWeaponState( DESIREDWEAPONSTATE_UNHOLSTERED ); } }
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
CBaseEntity *CAI_FuncTankBehavior::BestEnemy( void ) { // Only use this BestEnemy call when we are on the manned gun.
if ( !m_hFuncTank ||!IsMounted() ) return BaseClass::BestEnemy();
CBaseEntity *pBestEnemy = NULL; int iBestDistSq = MAX_COORD_RANGE * MAX_COORD_RANGE; // so first visible entity will become the closest.
int iBestPriority = -1000; bool bBestUnreachable = false; // Forces initial check
bool bBestSeen = false; bool bUnreachable = false; int iDistSq;
AIEnemiesIter_t iter;
// Get the current npc for checking from.
CAI_BaseNPC *pNPC = GetOuter(); if ( !pNPC ) return NULL;
for( AI_EnemyInfo_t *pEMemory = GetEnemies()->GetFirst( &iter ); pEMemory != NULL; pEMemory = GetEnemies()->GetNext( &iter ) ) { CBaseEntity *pEnemy = pEMemory->hEnemy; if ( !pEnemy || !pEnemy->IsAlive() ) continue; // UNDONE: Move relationship checks into IsValidEnemy?
if ( ( pEnemy->GetFlags() & FL_NOTARGET ) || ( pNPC->IRelationType( pEnemy ) != D_HT && pNPC->IRelationType( pEnemy ) != D_FR ) || !IsValidEnemy( pEnemy ) ) continue;
if ( pEMemory->timeLastSeen < pNPC->GetAcceptableTimeSeenEnemy() ) continue;
if ( pEMemory->timeValidEnemy > gpGlobals->curtime ) continue;
// Skip enemies that have eluded me to prevent infinite loops
if ( GetEnemies()->HasEludedMe( pEnemy ) ) continue;
// Establish the reachability of this enemy
bUnreachable = pNPC->IsUnreachable( pEnemy );
// Check view cone of the view tank here.
bUnreachable = !m_hFuncTank->IsEntityInViewCone( pEnemy ); if ( !bUnreachable ) { // It's in the viewcone. Now make sure we have LOS to it.
bUnreachable = !m_hFuncTank->HasLOSTo( pEnemy ); }
// If best is reachable and current is unreachable, skip the unreachable enemy regardless of priority
if ( !bBestUnreachable && bUnreachable ) continue;
// If best is unreachable and current is reachable, always pick the current regardless of priority
if ( bBestUnreachable && !bUnreachable ) { bBestSeen = ( pNPC->GetSenses()->DidSeeEntity( pEnemy ) || pNPC->FVisible( pEnemy ) ); // @TODO (toml 04-02-03): Need to optimize CanSeeEntity() so multiple calls in frame do not recalculate, rather cache
iBestPriority = pNPC->IRelationPriority( pEnemy ); iBestDistSq = (pEnemy->GetAbsOrigin() - GetAbsOrigin() ).LengthSqr(); pBestEnemy = pEnemy; bBestUnreachable = bUnreachable; } // If both are unreachable or both are reachable, chose enemy based on priority and distance
else if ( pNPC->IRelationPriority( pEnemy ) > iBestPriority ) { // this entity is disliked MORE than the entity that we
// currently think is the best visible enemy. No need to do
// a distance check, just get mad at this one for now.
iBestPriority = pNPC->IRelationPriority ( pEnemy ); iBestDistSq = ( pEnemy->GetAbsOrigin() - GetAbsOrigin() ).LengthSqr(); pBestEnemy = pEnemy; bBestUnreachable = bUnreachable; } else if ( pNPC->IRelationPriority( pEnemy ) == iBestPriority ) { // this entity is disliked just as much as the entity that
// we currently think is the best visible enemy, so we only
// get mad at it if it is closer.
iDistSq = ( pEnemy->GetAbsOrigin() - GetAbsOrigin() ).LengthSqr();
bool bCloser = ( iDistSq < iBestDistSq ) ;
if ( bCloser || !bBestSeen ) { // @TODO (toml 04-02-03): Need to optimize FVisible() so multiple calls in frame do not recalculate, rather cache
bool fSeen = ( pNPC->GetSenses()->DidSeeEntity( pEnemy ) || pNPC->FVisible( pEnemy ) ); if ( ( bCloser && ( fSeen || !bBestSeen ) ) || ( !bCloser && !bBestSeen && fSeen ) ) { bBestSeen = fSeen; iBestDistSq = iDistSq; iBestPriority = pNPC->IRelationPriority( pEnemy ); pBestEnemy = pEnemy; bBestUnreachable = bUnreachable; } } } } return pBestEnemy; }
//=============================================================================
//
// Custom AI schedule data
//
AI_BEGIN_CUSTOM_SCHEDULE_PROVIDER( CAI_FuncTankBehavior )
DECLARE_TASK( TASK_GET_PATH_TO_FUNCTANK ) DECLARE_TASK( TASK_FACE_FUNCTANK ) DECLARE_TASK( TASK_HOLSTER_WEAPON ) DECLARE_TASK( TASK_FIRE_FUNCTANK ) DECLARE_TASK( TASK_SCAN_LEFT_FUNCTANK ) DECLARE_TASK( TASK_SCAN_RIGHT_FUNCTANK ) DECLARE_TASK( TASK_FORGET_ABOUT_FUNCTANK ) DECLARE_TASK( TASK_FUNCTANK_ANNOUNCE_SCAN )
DECLARE_CONDITION( COND_FUNCTANK_DISMOUNT )
//=========================================================
//=========================================================
DEFINE_SCHEDULE ( SCHED_MOVE_TO_FUNCTANK,
" Tasks" " TASK_SET_FAIL_SCHEDULE SCHEDULE: SCHED_FAIL_MOVE_TO_FUNCTANK" " TASK_GET_PATH_TO_FUNCTANK 0" " TASK_SPEAK_SENTENCE 1000" // FUNCTANK_SENTENCE_MOVE_TO_MOUNT
" TASK_RUN_PATH 0" " TASK_WAIT_FOR_MOVEMENT 0" " TASK_STOP_MOVING 0" " TASK_FACE_FUNCTANK 0" " TASK_HOLSTER_WEAPON 0" " " " Interrupts" " COND_FUNCTANK_DISMOUNT" )
//=========================================================
//=========================================================
DEFINE_SCHEDULE ( SCHED_FIRE_FUNCTANK,
" Tasks" " TASK_ANNOUNCE_ATTACK 1" // 1 = primary attack
" TASK_FIRE_FUNCTANK 0" " " " Interrupts" " COND_NEW_ENEMY" " COND_ENEMY_DEAD" " COND_LOST_ENEMY" " COND_ENEMY_OCCLUDED" " COND_WEAPON_BLOCKED_BY_FRIEND" " COND_WEAPON_SIGHT_OCCLUDED" " COND_FUNCTANK_DISMOUNT" )
DEFINE_SCHEDULE ( SCHED_SCAN_WITH_FUNCTANK,
" Tasks" " TASK_FUNCTANK_ANNOUNCE_SCAN 0" " TASK_STOP_MOVING 0" " TASK_WAIT 4" " TASK_SCAN_LEFT_FUNCTANK 0" " TASK_WAIT 4" " TASK_SCAN_RIGHT_FUNCTANK 0" "" " Interrupts" " COND_NEW_ENEMY" " COND_PROVOKED" " COND_FUNCTANK_DISMOUNT" )
DEFINE_SCHEDULE ( SCHED_FAIL_MOVE_TO_FUNCTANK,
" Tasks" " TASK_FORGET_ABOUT_FUNCTANK 0" "" " Interrupts" )
AI_END_CUSTOM_SCHEDULE_PROVIDER()
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