NSMonster: add InSequence() method. Fix scripted sequences.

PMove: use self.mins instead of PHY_HULL_MINS when testing friction.
disable friction for monsters for now, as it can break some scripted sequences.

src/gs-entbase/shared/NSMonster.h

@@ -263,6 +263,7 @@ class NSMonster:NSNavAI
 	virtual void(void) RouteEnded;
 	virtual void(void) WalkRoute;
 	virtual int(void) GetSequenceState;
+	virtual bool(void) InSequence;
 
 	/* animation cycles */
 	float m_flAnimTime;

src/gs-entbase/shared/NSMonster.qc

@@ -561,6 +561,12 @@ NSMonster::GetSequenceState(void)
 	return m_iSequenceState;
 }
 
+bool
+NSMonster::InSequence(void)
+{
+	return (GetSequenceState() == SEQUENCESTATE_NONE) ? false : true;
+}
+
 void
 NSMonster::RunAI(void)
 {
@@ -587,25 +593,26 @@ NSMonster::Physics(void)
 
 	/* we're ending a scripted sequence, so play its animation */
 	if (GetSequenceState() == SEQUENCESTATE_ENDING) {
-		input_angles[1] = m_vecSequenceAngle[1];
+		angles[1] = input_angles[1] = m_vecSequenceAngle[1];
 		SetFrame(m_flSequenceEnd);
 	} else {
 		/* if still alive... */
-		if (GetState() != MONSTER_DEAD) {
-			/* not in a sequence */
-			if (GetSequenceState() == SEQUENCESTATE_NONE) {
+		if (IsAlive()) {
+			/* only run AI functions when not in a scripted sequence */
+			if (InSequence() == false) {
 				RunAI();
 			}
 
 			AnimationUpdate();
 		}
 
-		if (InAnimation() == false) {
+		/* suppress movement when playing an animation outside
+		   a scripted sequence */
+		if (InAnimation() == true && InSequence() == false) {
+			input_movevalues = [0,0,0];
+		} else {
 			CheckRoute();
 			WalkRoute();
-		} else {
-			input_movevalues = [0,0,0];
-			
 		}
 
 		hitcontentsmaski = CONTENTBITS_MONSTER;

src/gs-entbase/shared/NSTalkMonster.h

@@ -42,6 +42,9 @@ class NSTalkMonster:NSMonster
 	vector m_vecLastUserPos;
 	float m_flChangePath;
 	float m_flTraceTime;
+	float m_flFollowSpeedChanged;
+	float m_flFollowSpeed;
+	
 
 	/* sentences identifiers */
 	string m_talkAnswer; /* random answer to whenever a question is asked */

src/gs-entbase/shared/NSTalkMonster.qc

@@ -387,11 +387,22 @@ NSTalkMonster::FollowPlayer(void)
 	if (flPlayerDist > 1024) {
 		m_eFollowing = world;
 	} else if (flPlayerDist > 64) {
+		/* we only allow speed changes every second, avoid jitter */
+		if (m_flFollowSpeedChanged < time) {
+			float flNextSpeed = GetChaseSpeed();
+
 			/* if we're close enough, we ought to walk */
-		if (flPlayerDist > 256)
-			input_movevalues[0] = GetChaseSpeed();
-		else
-			input_movevalues[0] = GetWalkSpeed();
+			if (flPlayerDist < 256)
+				flNextSpeed = GetWalkSpeed();
+
+			/* only update the timer when speed changed */
+			if (flNextSpeed != m_flFollowSpeed) {
+				m_flFollowSpeed = flNextSpeed;
+				m_flFollowSpeedChanged = time + 1.0f;
+			}
+		}
+
+		input_movevalues[0] = m_flFollowSpeed;
 
 		other = world;
 		traceline(origin, m_eFollowingChain.origin, MOVE_OTHERONLY, this);

src/shared/pmove_custom.qc

@@ -227,6 +227,12 @@ PMoveCustom_AccelFriction(float move_time, float premove, vector wish_dir, float
 	float flFriction;
 	vector vecTemp;
 
+	/* friction does not apply to monsters right now */
+	if (self.flags & FL_MONSTER) {
+		self.velocity = wish_dir * wish_speed;
+		return;
+	}
+
 	flApplyFriction = serverkeyfloat("phy_friction");
 
 	/* per frame basis friction modifier */
@@ -246,7 +252,7 @@ PMoveCustom_AccelFriction(float move_time, float premove, vector wish_dir, float
 			on the other hand edge friction is probably not that important. */
 
 		// if the leading edge is over a dropoff, increase friction
-		vecTemp = self.origin + normalize(vecTemp) * 16 + [0,0,1] * PHY_HULL_MIN[2];
+		vecTemp = self.origin + normalize(vecTemp) * 16 + [0,0,1] * self.mins[2];
 		traceline(vecTemp, vecTemp + [0,0,-34], TRUE, self);
 
 		// apply friction