NPCs don't use doors properly

[AmProsius]

Describe the bug
NPCs close doors immediately after opening them and are thus not able to walk through them.

Expected behavior
NPCs now open closed doors properly and walk through them.

[catalinstoian]

gothic-1-community-patch/scriptbase/_work/Data/Scripts/Content/AI/B_Human/B_MoveMob.d

Lines 1 to 33 in 746a440

	func void B_MoveMob ()
	// 5.5.00 Hier muß noch die Abfrage auf Türen rein, wenn sie fertig ist
	{
	PrintDebugNpc (PD_ZS_FRAME, "B_MoveMob");
	//-------- nach blockierendem MOB suchen --------
	var string door;
	door=Npc_GetDetectedMob (self);
	PrintDebugNpc (PD_ZS_CHECK, ConcatStrings("...mob: ", door ));
	//-------- blockierendes MOB eine Türe --------
	if (Hlp_StrCmp (door, "DOOR"))
	{
	PrintDebugNpc (PD_ZS_CHECK, "...mob is a door!");
	if (self.aivar[AIV_MOVINGMOB] == 0) // versucht der NSC bereits die Tür zu öffnen?
	{
	PrintDebugNpc (PD_ZS_CHECK, "...Türe wurde noch NICHT versucht zu öffnen!");
	self.aivar[AIV_MOVINGMOB] = 1;
	Npc_ClearAIQueue(self); // bleib stehen
	AI_UseMob (self, door, 1); // falls sie geschlossen ist -> öffnen
	}
	else
	{
	PrintDebugNpc (PD_ZS_CHECK, "...Türe wird schon versucht zu öffnen -> geht wohl nicht!");
	Npc_PercDisable (self, PERC_MOVEMOB);
	self.aivar[AIV_MOVINGMOB] = 0;
	AI_StartState (self, ZS_WaitForPassage ,0, "");
	};
	};

changed to

func void B_MoveMob ()
{	
	var string door; door = Npc_GetDetectedMob(self);
	
	if (Hlp_StrCmp (door, "DOOR"))
	{
		if (Wld_GetMobState (self,door) == 0)
		{
			Npc_ClearAIQueue (self);
		
			AI_UseMob (self, door, 1);
			AI_UseMob (self, door, -1);	//NSC muss sich am Mobsi abmelden, da sonst die Tür wieder zu geht!
		};
	}
	else
	{
		return;
	};	
	AI_ContinueRoutine (self);
};

[szapp]

@catalinstoian The differences to the original function are quite big (even when ignoring all the PrintDebugNpc calls). Is the usage of AIV_MOVINGMOB no longer required? Also ZS_WaitForPassage and PERC_MOVEMOB seem to be missing.

Can you elaborate how this fix works and why the above mentioned parts are no longer necessary?