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Steer for the landing once a bot falls past a drop #2227

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Steer for the landing once a bot falls past a drop #2227

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e548297
Steer for the landing once a bot falls past a drop
sunzenshen Oct 14, 2026
5b2aaf2
Restore the drop goal when a bot lands part way
sunzenshen Oct 15, 2026
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27 changes: 27 additions & 0 deletions src/game/server/NextBot/Path/NextBotPathFollow.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -205,6 +205,15 @@ bool PathFollower::IsAtGoal( INextBot *bot ) const
// reached goal
return true;
}

#ifdef NEO
// a bot that walked off past the top of the drop has started its fall,
// so steer for the landing instead of back toward the edge behind it
if ( !mover->IsOnGround() && DotProduct2D( toGoal.AsVector2D(), current->forward.AsVector2D() ) < 0.0f )
{
return true;
}
#endif
}

/// @todo: it is possible to fall into a bad place and get stuck - should move back onto the path
Expand Down Expand Up @@ -573,6 +582,14 @@ bool PathFollower::CheckProgress( INextBot *bot )
// iterate to next segment of the path
const Path::Segment *nextSegment = pSkipToGoal ? pSkipToGoal : NextSegment( m_goal );

#ifdef NEO
// a drop's landing lies straight below its top, so it is behind a bot already falling past the top
if ( !pSkipToGoal && m_goal->type == DROP_DOWN && !mover->IsOnGround() && nextSegment && NextSegment( nextSegment ) )
{
nextSegment = NextSegment( nextSegment );
}
#endif

if ( nextSegment == NULL )
{
// must be on ground to complete the path
Expand Down Expand Up @@ -815,6 +832,16 @@ void PathFollower::Update( INextBot *bot )
const bool hasJustLanded = isOnGround && !m_wasOnGround;
m_wasOnGround = isOnGround;

// a bot that skipped a drop's landing in the air can come down on a ledge part way down,
// so aim for the top of the drop again instead of the path past the landing it missed
const Path::Segment *landing = hasJustLanded ? PriorSegment( m_goal ) : NULL;
const Path::Segment *dropTop = landing ? PriorSegment( landing ) : NULL;
const float feetZ = mover->GetFeet().z;
if ( dropTop && dropTop->type == DROP_DOWN && feetZ > landing->pos.z + mover->GetStepHeight() && feetZ < dropTop->pos.z - mover->GetStepHeight() )
{
m_goal = dropTop;
}

if ( hasJustLanded && HasFallenBelowPath( bot ) && IsNearNavMesh( bot ) )
{
mover->GetBot()->OnMoveToFailure( this, FAIL_FELL_OFF );
Expand Down
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