- Duke: Call movetransports() before processing any player movement.

* This simply works much better. In addition to being able to revert commits like `- Duke: Maintain x/y/z velocity when falling through a portal, such as E1L1's air duct.`, transitioning from above water to underwater and vice-versa is interpolated, smooth and seamless, something that I was unable to hack in without this change.

source/games/duke/src/actors_d.cpp

@@ -3274,7 +3274,6 @@ void think_d(void)
 
 	movefta();			//ST 2
 	moveweapons_d();		//ST 4
-	movetransports_d();		//ST 9
 	moveplayers();			//ST 10
 	movefallers_d();		//ST 12
 	moveexplosions_d();		//ST 5

source/games/duke/src/actors_r.cpp

@@ -3741,7 +3741,6 @@ void think_r(void)
 
 	movefta();			//ST 2
 	moveweapons_r();		//ST 4
-	movetransports_r();		//ST 9
 	moveplayers();			//ST 10
 	movefallers_r();		//ST 12
 	moveexplosions_r();		//ST 5

source/games/duke/src/dispatch.cpp

@@ -98,6 +98,8 @@ void displaymasks_d(int snum, int p, double interpfrac);
 void displaymasks_r(int snum, int p, double interpfrac);
 void think_d();
 void think_r();
+void movetransports_d();
+void movetransports_r();
 void animatesprites_d(tspriteArray& tsprites, const DVector2& viewVec, DAngle viewang, double interpfrac);
 void animatesprites_r(tspriteArray& tsprites, const DVector2& viewVec, DAngle viewang, double interpfrac);
 
@@ -109,6 +111,7 @@ void SetDispatcher()
 	{
 		fi = {
 		think_d,
+		movetransports_d,
 		initactorflags_d,
 		isadoorwall_d,
 		animatewalls_d,
@@ -151,6 +154,7 @@ void SetDispatcher()
 	{
 		fi = {
 		think_r,
+		movetransports_r,
 		initactorflags_r,
 		isadoorwall_r,
 		animatewalls_r,

source/games/duke/src/duke3d.h

@@ -70,6 +70,7 @@ struct Dispatcher
 {
 	// sectors_?.cpp
 	void (*think)();
+	void (*movetransports)();
 	void (*initactorflags)();
 	bool (*isadoorwall)(int dapic);
 	void (*animatewalls)();

source/games/duke/src/gameloop.cpp

@@ -70,6 +70,7 @@ void GameInterface::Ticker()
 		everyothertime++;
 
 		global_random = krand();
+		fi.movetransports();//ST 9
 		movedummyplayers();//ST 13
 
 		for (int i = connecthead; i >= 0; i = connectpoint2[i])