Manual merge of #4498.

Credit to @MeMuXin

Closes #4498

src/Entities/Player.cpp

@@ -863,12 +863,17 @@ void cPlayer::SetFlyingMaxSpeed(double a_Speed)
 void cPlayer::SetCrouch(bool a_IsCrouched)
 {
 	// Set the crouch status, broadcast to all visible players
-
 	if (a_IsCrouched == m_IsCrouched)
 	{
 		// No change
 		return;
 	}
+
+	if (a_IsCrouched)
+	{
+		cRoot::Get()->GetPluginManager()->CallHookPlayerCrouched(*this);
+	}
+
 	m_IsCrouched = a_IsCrouched;
 	m_World->BroadcastEntityMetadata(*this);
 }