+ int manual_direction;
+
/* tricks */
v3f flip_axis;
float flip_time,
/* tricks */
v3f flip_axis;
float flip_time,
m3x3f velocity_bias,
velocity_bias_pstep;
v3f apex;
m3x3f velocity_bias,
velocity_bias_pstep;
v3f apex;
+ v3f up_dir;
+
+ v3f head_position;