Hardcoded A_LookForBetter

src/dehacked.c

@@ -2231,6 +2231,7 @@ static actionpointer_t actionpointers[] =
 	{{A_Boss5Calm},              "A_BOSS5CALM"},
 	{{A_Boss5CheckOnGround},     "A_BOSS5CHECKONGROUND"},
 	{{A_Boss5CheckFalling},      "A_BOSS5CHECKFALLING"},
+	{{A_LookForBetter},          "A_LOOKFORBETTER"},
 
 	{{NULL},                   "NONE"},
 

src/info.h

@@ -245,6 +245,7 @@ void A_Boss5ExtraRepeat();
 void A_Boss5Calm();
 void A_Boss5CheckOnGround();
 void A_Boss5CheckFalling();
+void A_LookForBetter();
 
 // ratio of states to sprites to mobj types is roughly 6 : 1 : 1
 #define NUMMOBJFREESLOTS 256

src/p_enemy.c

@@ -272,6 +272,7 @@ void A_Boss5ExtraRepeat(mobj_t *actor);
 void A_Boss5Calm(mobj_t *actor);
 void A_Boss5CheckOnGround(mobj_t *actor);
 void A_Boss5CheckFalling(mobj_t *actor);
+void A_LookForBetter(mobj_t *actor);
 //for p_enemy.c
 
 //
@@ -12050,3 +12051,29 @@ void A_Boss5CheckFalling(mobj_t *actor)
 	if (P_MobjFlip(actor)*actor->momz <= 0)
 		P_SetMobjState(actor, locvar2);
 }
+
+// Function: A_LookForBetter
+//
+// Description: A_Look, except it finds a better target in multiplayer, and doesn't lose the target in singleplayer.
+//
+// var1 lower 16 bits = 0 - looks only in front, 1 - looks all around
+// var1 upper 16 bits = distance limit
+// var2 = unused
+//
+void A_LookForBetter(mobj_t *actor)
+{
+	INT32 locvar1 = var1;
+	//INT32 locvar2 = var2;
+	mobj_t *oldtarget = NULL;
+#ifdef HAVE_BLUA
+	if (LUA_CallAction("A_LookForBetter", actor))
+		return;
+#endif
+
+	P_SetTarget(&oldtarget, actor->target);
+
+	if (!P_LookForPlayers(actor, (locvar1 & 65535), false, FixedMul((locvar1 >> 16)*FRACUNIT, actor->scale)))
+		P_SetTarget(&actor->target, oldtarget);
+
+	A_FaceTarget(actor);
+}