Restore old acceleration behavior until something is actually agreed on (part 2)

src/player.cpp

@@ -59,9 +59,9 @@ Player::Player(IGameDef *gamedef):
 		"list[current_player;craftpreview;7,1;1,1;]";
 
 	// Initialize movement settings at default values, so movement can work if the server fails to send them
-	movement_acceleration_default = 2 * BS;
-	movement_acceleration_air = 0.5 * BS;
-	movement_acceleration_fast = 8 * BS;
+	movement_acceleration_default = 4 * BS;
+	movement_acceleration_air = 4 * BS;
+	movement_acceleration_fast = 4 * BS;
 	movement_speed_walk = 4 * BS;
 	movement_speed_crouch = 1.35 * BS;
 	movement_speed_fast = 20 * BS;