Add current, max and average velocity as stat (#912)

* Add current, max and average velocity as stat

# Conflicts:
#	src/p_setup.cpp
#	src/p_tick.cpp

# Conflicts:
#	src/p_setup.cpp
#	src/statistics.cpp

src/g_levellocals.h

@@ -151,6 +151,9 @@ struct FLevelLocals : public FLevelData
 	int			total_monsters;
 	int			killed_monsters;
 
+	double		max_velocity;
+	double		avg_velocity;
+
 	double		gravity;
 	double		aircontrol;
 	double		airfriction;

src/p_setup.cpp

@@ -3145,7 +3145,9 @@ void P_FreeLevelData ()
 	tagManager.Clear();
 	level.total_monsters = level.total_items = level.total_secrets =
 	level.killed_monsters = level.found_items = level.found_secrets = 0;
-		
+
+	level.max_velocity = level.avg_velocity = 0;
+
 	if (level.sectors.Size() > 0)
 	{
 		delete[] level.sectors[0].e;

src/p_tick.cpp

@@ -181,4 +181,8 @@ void P_Ticker (void)
 	level.time++;
 	level.maptime++;
 	level.totaltime++;
+	if (players[consoleplayer].mo != NULL) {
+		if (players[consoleplayer].mo->Vel.Length() > level.max_velocity) { level.max_velocity = players[consoleplayer].mo->Vel.Length(); }
+		level.avg_velocity += (players[consoleplayer].mo->Vel.Length() - level.avg_velocity) / level.maptime;
+	}
 }

src/statistics.cpp

@@ -41,6 +41,7 @@
 #include "g_level.h"
 #include "gstrings.h"
 #include "doomstat.h"
+#include "d_player.h"
 #include "configfile.h"
 #include "c_dispatch.h"
 #include "c_console.h"
@@ -614,3 +615,13 @@ ADD_STAT(statistics)
 	StoreLevelStats();	// Refresh the current level's results.
 	return GetStatString();
 }
+
+ADD_STAT(velocity)
+{
+	FString compose;
+	if (players[consoleplayer].mo != NULL && gamestate == GS_LEVEL) {
+		compose.AppendFormat("Current velocity: %.2f\n", players[consoleplayer].mo->Vel.Length());
+		compose.AppendFormat("Level %s - Velocity Max: %.2f, Velocity Average: %.2f\n", level.MapName.GetChars(), level.max_velocity, level.avg_velocity);
+	}
+	return compose;
+}