Fixing AI in multiplayer

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This is an update article about how to fix NPCs in multiplayer. HL2 has no support for NPCs in multiplayer and HL2DM has certainly broken more of the AI.

Relationships

There are no relationships set in HL2DM. This is simpel to fix. Go to hl2_gamerules.cpp and copy the entire InitDefaultAIRelationships function. Past it in hl2mp_gamerules.cpp and add a call to the new function in the constructor of the HL2DM gamerules.

Weapons

The weapons have custom activities and animation events in HL2DM. In the HL2DM-versions of the weapons, this is removed.

Open the weapon_hl2mpbase.h file and add the following code after the includes:

#ifndef CLIENT_DLL
	#include "AI_BaseNPC.h"
#endif