Added A_Wander Flags.

- WF_NORANDOMTURN and WF_DONTANGLE do the same as their CHF_ counterparts for A_Wander.

src/p_enemy.cpp

@@ -1799,7 +1799,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_Look)
 			}
 			else
 			{
-				CALL_ACTION(A_Wander, self);
+				A_Wander(self);
 			}
 		}
 		else
@@ -1957,7 +1957,7 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_LookEx)
                         }
                         else
                         {
-                            CALL_ACTION(A_Wander, self);
+                            A_Wander(self);
                         }
                     }
                 }
@@ -2054,7 +2054,27 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_ClearLastHeard)
 // A_Wander
 //
 //==========================================================================
-DEFINE_ACTION_FUNCTION(AActor, A_Wander)
+enum WFFlags
+{
+	WF_NORANDOMTURN	=	1,
+	WF_DONTANGLE =		2,
+};
+
+DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_Wander)
+{
+	ACTION_PARAM_START(1);
+	ACTION_PARAM_INT(flags, 0);
+	
+	A_Wander(self, flags);
+}
+
+// [MC] I had to move this out from within A_Wander in order to allow flags to 
+// pass into it. That meant replacing the CALL_ACTION(A_Wander) functions with
+// just straight up defining A_Wander in order to compile. Looking around though,
+// actors from the games themselves just do a straight A_Chase call itself so
+// I saw no harm in it.
+
+void A_Wander(AActor *self, int flags)
 {
 	// [RH] Strife probably clears this flag somewhere, but I couldn't find where.
 	// This seems as good a place as any.
@@ -2073,28 +2093,30 @@ DEFINE_ACTION_FUNCTION(AActor, A_Wander)
 	}
 
 	// turn towards movement direction if not there yet
-	if (self->movedir < DI_NODIR)
+	if (!(flags & WF_DONTANGLE) && (self->movedir < DI_NODIR))
 	{
-		self->angle &= (angle_t)(7<<29);
+		self->angle &= (angle_t)(7 << 29);
 		int delta = self->angle - (self->movedir << 29);
 		if (delta > 0)
 		{
-			self->angle -= ANG90/2;
+			self->angle -= ANG90 / 2;
 		}
 		else if (delta < 0)
 		{
-			self->angle += ANG90/2;
+			self->angle += ANG90 / 2;
 		}
 	}
 
-	if (--self->movecount < 0 || !P_Move (self))
+	if (self->movecount >= 0)
+		self->movecount--;
+
+	if ((!(flags & WF_NORANDOMTURN) && self->movecount < 0) || !P_Move(self))
 	{
-		P_RandomChaseDir (self);
+		P_RandomChaseDir(self);
 		self->movecount += 5;
 	}
 }
 
-
 //==========================================================================
 //
 // A_Look2
@@ -2309,7 +2331,7 @@ void A_DoChase (AActor *actor, bool fastchase, FState *meleestate, FState *missi
 				//CALL_ACTION(A_Look, actor);
 				if (actor->target == NULL)
 				{
-					if (!dontmove) CALL_ACTION(A_Wander, actor);
+					if (!dontmove) A_Wander(actor);
 					actor->flags &= ~MF_INCHASE;
 					return;
 				}

src/p_enemy.h

@@ -61,7 +61,6 @@ void A_Weave(AActor *self, int xyspeed, int zspeed, fixed_t xydist, fixed_t zdis
 void A_Unblock(AActor *self, bool drop);
 
 DECLARE_ACTION(A_Look)
-DECLARE_ACTION(A_Wander)
 DECLARE_ACTION(A_BossDeath)
 DECLARE_ACTION(A_Pain)
 DECLARE_ACTION(A_MonsterRail)
@@ -72,6 +71,7 @@ DECLARE_ACTION(A_FreezeDeathChunks)
 DECLARE_ACTION(A_BossDeath)
 
 void A_Chase(AActor *self);
+void A_Wander(AActor *self, int flags = 0);
 void A_FaceTarget(AActor *actor, angle_t max_turn = 0, angle_t max_pitch = ANGLE_270, angle_t ang_offset = 0, angle_t pitch_offset = 0, int flags = 0);
 void A_Face(AActor *self, AActor *other, angle_t max_turn = 0, angle_t max_pitch = ANGLE_270, angle_t ang_offset = 0, angle_t pitch_offset = 0, int flags = 0);
 

wadsrc/static/actors/actor.txt

@@ -176,7 +176,7 @@ ACTOR Actor native //: Thinker
 	action native A_SkullPop(class<Actor> skulltype = "BloodySkull");
 	action native A_CheckPlayerDone();
 
-	action native A_Wander();
+	action native A_Wander(int flags = 0);
 	action native A_Look2();
 	action native A_TossGib();
 	action native A_SentinelBob();

wadsrc/static/actors/constants.txt

@@ -513,6 +513,13 @@ enum
 	CBF_SETONPTR		= 1 << 4,	//Sets the pointer change on the actor doing the checking instead of self.
 };
 
+// Wander Flags
+enum
+{
+	WF_NORANDOMTURN	=	1,
+	WF_DONTANGLE =		2,
+};
+
 // This is only here to provide one global variable for testing.
 native int testglobalvar;