Add short Eureka Effect teleport cooldown

Add a short cooldown where the player can't take their own
teleporter immediately after using the Eureka Effect. Previously,
teleporting to an exit with the "2-Way Teleporters" MvM upgrade would
immediately teleport you back to spawn.

The cooldown is the length of a level 3 teleporter recharge.

Author: k-vog

src/game/server/tf/tf_obj_teleporter.cpp

@@ -537,6 +537,10 @@ bool CObjectTeleporter::PlayerCanBeTeleported( CTFPlayer *pPlayer )
 	if ( TFGameRules() && TFGameRules()->IsPasstimeMode() && pPlayer->m_Shared.HasPasstimeBall() )
 		return false;
 
+	// If the player just used the Eureka Effect, give them time to step off the teleporter
+	if ( pBuilder && pBuilder->entindex() == pPlayer->entindex() && pPlayer->m_flEurekaTeleportCooldown >= gpGlobals->curtime )
+		return false;
+
 	return true;
 }
 

src/game/server/tf/tf_player.cpp

@@ -1610,6 +1610,7 @@ void CTFPlayer::TFPlayerThink()
 			if ( m_eEurekaTeleportTarget == EUREKA_TELEPORT_TELEPORTER_EXIT && pTeleExit && ( pTeleExit->GetState() != TELEPORTER_STATE_BUILDING ) )
 			{
 				pTeleExit->RecieveTeleportingPlayer( this );
+				m_flEurekaTeleportCooldown = gpGlobals->curtime + 3.f;
 			}
 			else
 			{
@@ -3804,6 +3805,7 @@ void CTFPlayer::Spawn()
 	m_purgatoryPainMultiplierTimer.Invalidate();
 
 	m_bIsTeleportingUsingEurekaEffect = false;
+	m_flEurekaTeleportCooldown = 0.f;
 
 	m_playerMovementStuckTimer.Invalidate();
 

src/game/server/tf/tf_player.h

@@ -1398,6 +1398,7 @@ class CTFPlayer : public CBaseMultiplayerPlayer, public IHasAttributes, public I
 
 	// Wrenchmotron teleport
 	bool				m_bIsTeleportingUsingEurekaEffect;
+	float				m_flEurekaTeleportCooldown;
 
 private:
 	void				UpdateHalloween( void );