update helpers/location to 'frosted' ui
[carveJwlIkooP6JGAAIwe30JlM.git] / player_walk.c
index 12d070609153c20fbad6d62abc34055457c85ef3..b421e42c3ab98305b692d6e42b2d01609419e4ff 100644 (file)
@@ -1,9 +1,34 @@
-#ifndef PLAYER_WALK_C
-#define PLAYER_WALK_C
+#include "vg/vg_rigidbody_collision.h"
 
+#include "skaterift.h"
+#include "player_walk.h"
+#include "player_skate.h"
+#include "player_dead.h"
 #include "player.h"
 #include "input.h"
 #include "audio.h"
+#include "scene_rigidbody.h"
+
+struct player_walk player_walk;
+struct player_subsystem_interface player_subsystem_walk = 
+{
+   .system_register = player__walk_register,
+   .bind = player__walk_bind,
+   .pre_update = player__walk_pre_update,
+   .update = player__walk_update,
+   .post_update = player__walk_post_update,
+   .im_gui = player__walk_im_gui,
+   .animate = player__walk_animate,
+   .post_animate = player__walk_post_animate,
+   .pose = player__walk_pose,
+   .network_animator_exchange = player__walk_animator_exchange,
+   .sfx_oneshot = player__walk_sfx_oneshot,
+
+   .animator_data = &player_walk.animator,
+   .animator_size = sizeof(player_walk.animator),
+   .name = "Walk"
+};
+
 
 static void player_walk_drop_in_vector( v3f vec ){
    v3f axis, init_dir;
@@ -47,7 +72,7 @@ static void player_walk_generic_to_skate( enum skate_activity init, f32 yaw ){
    player__begin_holdout( (v3f){0.0f,0.0f,0.0f} );
    player__skate_reset_animator();
    player__skate_clear_mechanics();
-   rb_update_transform( &localplayer.rb );
+   rb_update_matrices( &localplayer.rb );
    v3_copy( (v3f){yaw,0.0f,0.0f}, player_skate.state.trick_euler );
 
    if( init == k_skate_activity_air )
@@ -61,20 +86,21 @@ static void player_walk_drop_in_to_skate(void){
    player_skate.state.activity_prev = k_skate_activity_ground;
    player_skate.state.activity = k_skate_activity_ground;
 
-   player__begin_holdout( (v3f){0.0f,0.0f,0.0f} );
+   player__begin_holdout( (v3f){0,0,0} );
    player__skate_clear_mechanics();
    player__skate_reset_animator();
 
    v3f init_velocity;
    player_walk_drop_in_vector( init_velocity );
 
-   rb_update_transform( &localplayer.rb );
+   rb_update_matrices( &localplayer.rb );
    v3_muladds( localplayer.rb.co, localplayer.rb.to_world[1], 1.0f, 
                player_skate.state.cog );
    v3_copy( init_velocity, player_skate.state.cog_v );
    v3_copy( init_velocity, localplayer.rb.v );
    v3_copy( init_velocity, localplayer.cam_control.cam_velocity_smooth );
-   v3_copy( (v3f){1.0f,0.0f,0.0f}, player_skate.state.trick_euler );
+   v3_copy( (v3f){player_walk.animator.board_yaw+1.0f,0,0}, 
+            player_skate.state.trick_euler );
 }
 
 static void player_walk_drop_in_overhang_transform( f32 t, v3f co, v4f q ){
@@ -219,129 +245,143 @@ static int player_walk_scan_for_drop_in(void){
    return 0;
 }
 
-static struct skeleton_anim *player_walk_outro_anim( enum walk_outro type ){
-   struct player_walk *w = &player_walk;
-
-   if( type >= k_walk_outro_max )
-      return NULL;
+static bool player__preupdate_anim( struct skeleton_anim *anim, f32 *t, 
+                                    f32 speed ){
+   f32 length = (f32)(anim->length-1) / anim->rate;
+   *t += (vg.time_delta * speed) / length;
 
-   return (struct skeleton_anim *[]){ 
-            [k_walk_outro_none]        = NULL,
-            [k_walk_outro_jump_to_air] = w->anim_jump_to_air,
-            [k_walk_outro_regular]     = w->anim_intro,
-            [k_walk_outro_drop_in]     = w->anim_drop_in
-          }[ type ];
+   if( *t >= 1.0f ) return 1;
+   else             return 0;
 }
 
-
-static void player__walk_pre_update(void){
+static void player_walk_pre_sit(void){
    struct player_walk *w = &player_walk;
 
-   if( !localplayer.immobile )
-      player_look( localplayer.angles, skaterift.time_rate );
-
    v2f steer;
    joystick_state( k_srjoystick_steer, steer );
 
-   if( w->state.activity == k_walk_activity_sit ){
-      if( w->state.sit_t < 1.0f )
-         w->state.sit_t = vg_minf( 1.0f, w->state.sit_t + vg.time_delta );
+   vg_slewf( &w->state.transition_t, 1.0f, vg.time_delta );
 
-      if( button_down(k_srbind_sit) || (v2_length2(steer)>0.2f) ||
-          button_down(k_srbind_jump) ){
-         w->state.activity = k_walk_activity_sit_up;
-      }
-      return;
+   if( button_down(k_srbind_sit) || (v2_length2(steer)>0.2f) ||
+       button_down(k_srbind_jump) ){
+      w->state.activity = k_walk_activity_sit_up;
    }
-   else if( w->state.activity == k_walk_activity_sit_up ){
-      if( w->state.sit_t > 0.0f )
-         w->state.sit_t = vg_maxf( 0.0f, w->state.sit_t - vg.time_delta );
-      else 
-         w->state.activity = k_walk_activity_ground;
+   return;
+}
+
+static void player_walk_pre_sit_up(void){
+   struct player_walk *w = &player_walk;
+   
+   if( w->state.transition_t > 0.0f )
+      vg_slewf( &w->state.transition_t, 0.0f, vg.time_delta );
+   else 
+      w->state.activity = k_walk_activity_ground;
+
+   if( button_down(k_srbind_sit) )
+      w->state.activity = k_walk_activity_sit;
 
-      if( button_down(k_srbind_sit) )
-         w->state.activity = k_walk_activity_sit;
+   return;
+}
+
+static void player_walk_pre_ground(void){
+   struct player_walk *w = &player_walk;
 
+   if( button_down(k_srbind_sit) ){
+      v3_zero( localplayer.rb.v );
+      w->state.activity = k_walk_activity_sit;
+      w->state.transition_t = 0.0f;
       return;
    }
-   else if( w->state.activity == k_walk_activity_ground ){
-      if( button_down(k_srbind_sit) ){
-         v3_zero( localplayer.rb.v );
-         w->state.activity = k_walk_activity_sit;
-         return;
+
+   if( button_down( k_srbind_use ) ){
+      if( player_walk_scan_for_drop_in() ){
+         w->state.activity = k_walk_activity_odrop_in;
+      }
+      else{
+         w->state.activity = k_walk_activity_oregular;
       }
+
+      w->state.transition_t = 0.0f;
    }
 
-   w->state.sit_t = 0.0f;
+   if( button_down( k_srbind_jump ) ){
+      w->state.jump_queued = 1;
+      w->state.jump_input_time = vg.time;
+   }
+}
 
-   if( w->state.outro_type ){
-      struct skeleton_anim *anim = player_walk_outro_anim(w->state.outro_type);
+static void player_walk_pre_air(void){
+   struct player_walk *w = &player_walk;
+   if( button_down( k_srbind_use ) ){
+      w->state.activity = k_walk_activity_oair;
+      w->state.transition_t = 0.0f;
+   }
 
-      f32 outro_length = (f32)anim->length / anim->rate,
-            outro_time = vg.time - w->state.outro_start_time;
+   if( button_down( k_srbind_jump ) ){
+      w->state.jump_queued = 1;
+      w->state.jump_input_time = vg.time;
+   }
+}
 
-      if( outro_time >= outro_length ){
-         if( w->state.outro_type == k_walk_outro_drop_in ){
-            player_walk_drop_in_to_skate();
-         }
-         else if( w->state.outro_type == k_walk_outro_jump_to_air ){
-            player_walk_generic_to_skate( k_skate_activity_air, 0.0f );
-         }
-         else{
-            player_walk_generic_to_skate( k_skate_activity_ground, 1.0f );
-         }
+static void player_walk_pre_drop_in(void){
+   struct player_walk *w = &player_walk;
+   bool finished = player__preupdate_anim( w->anim_drop_in, 
+                                          &w->state.transition_t, 1.0f );
+   if( finished )
+      player_walk_drop_in_to_skate();
+}
 
-         w->state.outro_type = k_walk_outro_none;
-         return;
-      }
+static void player_walk_pre_caveman(void){
+   struct player_walk *w = &player_walk;
+   bool finished = player__preupdate_anim( w->anim_jump_to_air,
+                                          &w->state.transition_t, 1.0f );
+   if( finished ){
+      player_walk_generic_to_skate( k_skate_activity_air, 
+                                    player_walk.animator.board_yaw );
    }
-   else if( button_down( k_srbind_use ) && !localplayer.immobile ){
-      if( 0 && (v3_dist2(localplayer.rb.co,gzoomer.obj.rb.co) <= 4.0f*4.0f) ){
-         localplayer.subsystem = k_player_subsystem_drive;
-      }
-      else{
-         struct player_board *board = 
-            addon_cache_item_if_loaded( k_addon_type_board,
-                                        localplayer.board_view_slot );
-
-         if( !board ) return;
-
-         if( w->state.activity == k_walk_activity_ground ){
-            if( player_walk_scan_for_drop_in() ){
-               w->state.outro_type = k_walk_outro_drop_in;
-               w->state.outro_start_time = vg.time;
-               localplayer.immobile = 1;
-
-               u32 foot_id = localplayer.id_ik_foot_r;
-
-               m4x3_mulv( localplayer.final_mtx[ foot_id ], 
-                          localplayer.skeleton.bones[ foot_id ].co, 
-                          w->state.drop_in_foot_anchor );
-            }
-            else{
-               w->state.outro_type = k_walk_outro_regular;
-               w->state.outro_start_time = vg.time;
-               w->state.activity = k_walk_activity_lockedmove;
-
-               if( player_xyspeed2() < 0.1f * 0.1f ){
-                  q_mulv( localplayer.rb.q, (v3f){0.0f,0.0f,1.6f}, 
-                          localplayer.rb.v );
-               }
-            }
-         }
-         else{
-            w->state.outro_type = k_walk_outro_jump_to_air;
-            w->state.outro_start_time = vg.time;
-            return;
-         }
-      }
+}
+
+static void player_walk_pre_running_start(void){
+   struct player_walk *w = &player_walk;
+   bool finished = player__preupdate_anim( w->anim_intro, 
+                                          &w->state.transition_t, 1.0f );
+   if( finished ){
+      /* TODO: get the derivative of the last keyframes to calculate new
+       * velocity for player */
+      player_walk_generic_to_skate( k_skate_activity_ground, 
+                                    player_walk.animator.board_yaw+1.0f );
    }
-   else if( button_down( k_srbind_jump ) && !localplayer.immobile ){
-      w->state.jump_queued = 1;
-      w->state.jump_input_time = vg.time;
+}
+
+static void player_walk_pre_popoff(void){
+   struct player_walk *w = &player_walk;
+   bool finished = player__preupdate_anim( w->anim_popoff, 
+                                          &w->state.transition_t, 1.0f );
+
+   if( finished ){
+      w->state.activity = k_walk_activity_ground;
+      w->animator.board_yaw += 1.0f;
    }
 }
 
+void player__walk_pre_update(void){
+   struct player_walk *w = &player_walk;
+
+   if( localplayer.immobile ) return;
+   else player_look( localplayer.angles, skaterift.time_rate );
+
+   enum walk_activity a = w->state.activity;
+
+   if     ( a == k_walk_activity_sit )       player_walk_pre_sit();
+   else if( a == k_walk_activity_sit_up )    player_walk_pre_sit_up();
+   else if( a == k_walk_activity_ground )    player_walk_pre_ground();
+   else if( a == k_walk_activity_air )       player_walk_pre_air();
+   else if( a == k_walk_activity_odrop_in )  player_walk_pre_drop_in();
+   else if( a == k_walk_activity_oair )      player_walk_pre_caveman();
+   else if( a == k_walk_activity_oregular )  player_walk_pre_running_start();
+   else if( a == k_walk_activity_ipopoff )   player_walk_pre_popoff();
+}
+
 static int player_walk_normal_standable( v3f n ){
    return n[1] > 0.70710678118f;
 }
@@ -353,7 +393,7 @@ static void player_accelerate( v3f v, v3f movedir, f32 speed, f32 accel ){
    if( addspeed <= 0 )
       return;
 
-   float accelspeed = accel * k_rb_delta * speed;
+   float accelspeed = accel * vg.time_fixed_delta * speed;
 
    if( accelspeed > addspeed )
       accelspeed = addspeed;
@@ -361,7 +401,7 @@ static void player_accelerate( v3f v, v3f movedir, f32 speed, f32 accel ){
    v3_muladds( v, movedir, accelspeed, v );
 }
 
-static void player_friction( v3f v ){
+static void player_friction( v3f v, f32 friction ){
    float speed = v3_length( v ),
          drop  = 0.0f,
          control = vg_maxf( speed, k_stopspeed );
@@ -369,7 +409,7 @@ static void player_friction( v3f v ){
    if( speed < 0.04f )
       return;
 
-   drop += control * k_walk_friction * k_rb_delta;
+   drop += control * friction * vg.time_fixed_delta;
 
    float newspeed = vg_maxf( 0.0f, speed - drop );
    newspeed /= speed;
@@ -414,42 +454,33 @@ static void player_walk_custom_filter( world_instance *world,
    }
 }
 
-static void player__walk_update(void){
+static void player_walk_update_generic(void){
    struct player_walk *w = &player_walk;
 
-   v2f steer;
-   joystick_state( k_srjoystick_steer, steer );
-
-   if( (w->state.activity == k_walk_activity_sit) ||
-       (w->state.activity == k_walk_activity_sit_up) ){
-      return;
+   if( (w->state.activity != k_walk_activity_oregular) &&
+       (w->state.activity != k_walk_activity_oair) ){
+      joystick_state( k_srjoystick_steer, w->state.steer );
+      w->state.steer[2] = button_press(k_srbind_run)? k_runspeed: k_walkspeed;
+      if( v2_length2(w->state.steer)>1.0f )
+         v2_normalize(w->state.steer);
    }
 
    v3_copy( localplayer.rb.co, w->state.prev_pos );
    v3_zero( localplayer.rb.w );
 
    world_instance *world = world_current_instance();
-
-   if( world->water.enabled ){
-      if( localplayer.rb.co[1]+0.4f < world->water.height ){
-         player__networked_sfx( k_player_subsystem_walk, 32, 
-                                k_player_walk_soundeffect_splash,
-                                localplayer.rb.co, 1.0f );
-         player__dead_transition();
-         return;
-      }
-   }
+   if( !world_water_player_safe( world, 0.4f ) ) return;
 
    enum walk_activity prev_state = w->state.activity;
 
-   w->collider.height = 2.0f;
-   w->collider.radius = 0.3f;
+   w->collider.h = 2.0f;
+   w->collider.r = 0.3f;
 
    m4x3f mtx;
    m3x3_copy( localplayer.rb.to_world, mtx );
    v3_add( localplayer.rb.co, (v3f){0,1,0}, mtx[3] );
 
-   vg_line_capsule( mtx, w->collider.radius, w->collider.height, VG__WHITE );
+   vg_line_capsule( mtx, w->collider.r, w->collider.h, VG__WHITE );
 
    rb_ct manifold[64];
    int len;
@@ -459,31 +490,26 @@ static void player__walk_update(void){
    v3f forward_dir = { -sinf(yaw),         0.0f,  cosf(yaw) };
    v3f right_dir   = {  forward_dir[2],    0.0f, -forward_dir[0] };
 
-   w->move_speed = localplayer.immobile? 0.0f: v2_length( steer );
-
    /* 
     * Collision detection
     */
 
    len = rb_capsule__scene( mtx, &w->collider, NULL, 
-                            &world->rb_geo.inf.scene, manifold, 0 );
+                            world->geo_bh, manifold, 0 );
    player_walk_custom_filter( world, manifold, len, 0.01f );
    len = rb_manifold_apply_filtered( manifold, len );
 
    v3f surface_avg = { 0.0f, 0.0f, 0.0f };
 
-   if( w->state.activity != k_walk_activity_lockedmove )
-      w->state.activity = k_walk_activity_air;
-
+   w->state.activity = k_walk_activity_air;
    w->surface = k_surface_prop_concrete;
 
    for( int i=0; i<len; i++ ){
-      struct contact *ct = &manifold[i];
+      rb_ct *ct = &manifold[i];
       rb_debug_contact( ct );
 
       if( player_walk_normal_standable( ct->n ) ){
-         if( w->state.activity != k_walk_activity_lockedmove )
-            w->state.activity = k_walk_activity_ground;
+         w->state.activity = k_walk_activity_ground;
 
          v3_add( surface_avg, ct->n, surface_avg );
 
@@ -492,7 +518,7 @@ static void player__walk_update(void){
             w->surface = surf->info.surface_prop;
       }
 
-      rb_prepare_contact( ct, k_rb_delta );
+      rb_prepare_contact( ct, vg.time_fixed_delta );
    }
 
    /* 
@@ -501,8 +527,8 @@ static void player__walk_update(void){
    float accel_speed = 0.0f, nominal_speed = 0.0f;
    v3f movedir;
 
-   v3_muls( right_dir, steer[0], movedir );
-   v3_muladds( movedir, forward_dir, steer[1], movedir );
+   v3_muls( right_dir, w->state.steer[0], movedir );
+   v3_muladds( movedir, forward_dir, w->state.steer[1], movedir );
 
    if( w->state.activity == k_walk_activity_ground ){
       v3_normalize( surface_avg );
@@ -510,14 +536,14 @@ static void player__walk_update(void){
       v3f tx, ty;
       v3_tangent_basis( surface_avg, tx, ty );
 
-      if( v2_length2(steer) > 0.001f ){
+      if( v2_length2(w->state.steer) > 0.001f ){
          /* clip movement to the surface */
          float d = v3_dot(surface_avg,movedir);
          v3_muladds( movedir, surface_avg, -d, movedir );
       }
 
       accel_speed = k_walk_accel;
-      nominal_speed = k_walkspeed;
+      nominal_speed = w->state.steer[2];
 
       /* jump */
       if( w->state.jump_queued ){
@@ -533,7 +559,7 @@ static void player__walk_update(void){
          }
       }
       else{
-         player_friction( localplayer.rb.v );
+         player_friction( localplayer.rb.v, k_walk_friction );
       }
    }
    else{
@@ -541,7 +567,7 @@ static void player__walk_update(void){
       nominal_speed = k_airspeed;
    }
 
-   if( v2_length2( steer ) > 0.001f ){
+   if( v2_length2( w->state.steer ) > 0.001f ){
       player_accelerate( localplayer.rb.v, movedir, 
                          nominal_speed, accel_speed );
       v3_normalize( movedir );
@@ -552,7 +578,7 @@ static void player__walk_update(void){
     */
    for( int j=0; j<5; j++ ){
       for( int i=0; i<len; i++ ){
-         struct contact *ct = &manifold[i];
+         rb_ct *ct = &manifold[i];
          
          /*normal */
          float vn = -v3_dot( localplayer.rb.v, ct->n );
@@ -572,22 +598,22 @@ static void player__walk_update(void){
 
       v3f pa, pb;
       v3_copy( localplayer.rb.co, pa );
-      pa[1] += w->collider.radius + max_dist;
+      pa[1] += w->collider.r + max_dist;
       v3_add( pa, (v3f){0, -max_dist * 2.0f, 0}, pb );
       vg_line( pa, pb, 0xff000000 );
 
       v3f n;
       float t;
       if( spherecast_world( world, pa, pb, 
-                            w->collider.radius, &t, n, 0 ) != -1 ){
+                            w->collider.r, &t, n, 0 ) != -1 ){
          if( player_walk_normal_standable(n) ){
             v3_lerp( pa, pb, t, localplayer.rb.co );
-            localplayer.rb.co[1] += -w->collider.radius - k_penetration_slop;
+            localplayer.rb.co[1] += -w->collider.r - k_penetration_slop;
             w->state.activity = k_walk_activity_ground;
 
             float d = -v3_dot(n,localplayer.rb.v);
             v3_muladds( localplayer.rb.v, n, d, localplayer.rb.v );
-            localplayer.rb.v[1] += -k_gravity * k_rb_delta;
+            localplayer.rb.v[1] += -k_gravity * vg.time_fixed_delta;
          }
       }
    }
@@ -601,7 +627,7 @@ static void player__walk_update(void){
 
    /* integrate */
    if( w->state.activity == k_walk_activity_air ){
-      localplayer.rb.v[1] += -k_gravity*k_rb_delta;
+      localplayer.rb.v[1] += -k_gravity*vg.time_fixed_delta;
    }
 
    if( localplayer.immobile ){
@@ -609,10 +635,10 @@ static void player__walk_update(void){
       localplayer.rb.v[2] = 0.0f;
    }
 
-   v3_muladds( localplayer.rb.co, localplayer.rb.v, k_rb_delta, 
+   v3_muladds( localplayer.rb.co, localplayer.rb.v, vg.time_fixed_delta, 
                localplayer.rb.co );
    v3_add( localplayer.rb.co, (v3f){0,1,0}, mtx[3] );
-   vg_line_capsule( mtx, w->collider.radius, w->collider.height, VG__GREEN );
+   vg_line_capsule( mtx, w->collider.r, w->collider.h, VG__GREEN );
 
    /* 
     * CCD routine 
@@ -621,7 +647,7 @@ static void player__walk_update(void){
     */
    v3f lwr_prev,
        lwr_now,
-       lwr_offs = { 0.0f, w->collider.radius, 0.0f };
+       lwr_offs = { 0.0f, w->collider.r, 0.0f };
 
    v3_add( lwr_offs, w->state.prev_pos, lwr_prev );
    v3_add( lwr_offs, localplayer.rb.co, lwr_now );
@@ -632,16 +658,15 @@ static void player__walk_update(void){
    float movedist = v3_length( movedelta );
 
    if( movedist > 0.3f ){
-      float t, sr = w->collider.radius-0.04f;
+      float t, sr = w->collider.r-0.04f;
       v3f n;
 
       if( spherecast_world( world, lwr_prev, lwr_now, sr, &t, n, 0 ) != -1 ){
          v3_lerp( lwr_prev, lwr_now, vg_maxf(0.01f,t), localplayer.rb.co );
-         localplayer.rb.co[1] -= w->collider.radius;
-         rb_update_transform( &localplayer.rb );
-
+         localplayer.rb.co[1] -= w->collider.r;
+         rb_update_matrices( &localplayer.rb );
          v3_add( localplayer.rb.co, (v3f){0,1,0}, mtx[3] );
-         vg_line_capsule( mtx, w->collider.radius, w->collider.height, VG__RED);
+         vg_line_capsule( mtx, w->collider.r, w->collider.h, VG__RED);
       }
    }
 
@@ -654,14 +679,24 @@ static void player__walk_update(void){
       v4f transport_rotation;
       m3x3_q( gate->transport, transport_rotation );
       q_mul( transport_rotation, localplayer.rb.q, localplayer.rb.q );
-
-      rb_update_transform( &localplayer.rb );
+      q_normalize( localplayer.rb.q );
+      rb_update_matrices( &localplayer.rb );
       player__pass_gate( id );
    }
-   rb_update_transform( &localplayer.rb );
+   rb_update_matrices( &localplayer.rb );
+
+   if( (prev_state == k_walk_activity_oregular) ||
+       (prev_state == k_walk_activity_oair) ||
+       (prev_state == k_walk_activity_ipopoff) ){
+      w->state.activity = prev_state;
+   }
+
+   w->move_speed = vg_minf( v2_length( (v2f){ localplayer.rb.v[0], 
+                                              localplayer.rb.v[2] } ),
+                            k_runspeed );
 }
 
-static void player__walk_post_update(void){
+void player__walk_post_update(void){
    struct player_walk *w = &player_walk;
 
    m4x3f mtx;
@@ -669,15 +704,23 @@ static void player__walk_post_update(void){
    v3_add( localplayer.rb.co, (v3f){0,1,0}, mtx[3] );
 
    float substep = vg.time_fixed_extrapolate;
-   v3_muladds( mtx[3], localplayer.rb.v, k_rb_delta*substep, mtx[3] );
-   vg_line_capsule( mtx, w->collider.radius, w->collider.height, VG__YELOW );
-
+   v3_muladds( mtx[3], localplayer.rb.v, vg.time_fixed_delta*substep, mtx[3] );
+   vg_line_capsule( mtx, w->collider.r, w->collider.h, VG__YELOW );
 
    /* Calculate header */
    v3f v;
-   if( player_xyspeed2() > 0.1f*0.1f ){
-      float a = atan2f( localplayer.rb.v[0], localplayer.rb.v[2] );
-      q_axis_angle( localplayer.rb.q, (v3f){0.0f,1.0f,0.0f}, a );
+   if( (player_xyspeed2() > 0.1f*0.1f) ){
+      f32 r = 0.3f;
+      if( (w->state.activity == k_walk_activity_ground) ||
+          (w->state.activity == k_walk_activity_ipopoff) ||
+          (w->state.activity == k_walk_activity_oregular) ){
+         r = 0.07f;
+      }
+
+      f32 ta = atan2f( localplayer.rb.v[0], localplayer.rb.v[2] );
+      v4f qt;
+      q_axis_angle( qt, (v3f){0,1,0}, ta );
+      q_nlerp( localplayer.rb.q, qt, vg.time_delta/r, localplayer.rb.q );
    }
 
    vg_line_point( w->state.drop_in_target, 0.1f, VG__GREEN );
@@ -687,10 +730,6 @@ static void player__walk_post_update(void){
    v3_muladds( w->state.drop_in_target, localplayer.rb.to_world[1], 0.3f, p1 );
    vg_line( w->state.drop_in_target, p1, VG__GREEN );
 
-   vg_line( w->state.drop_in_target, w->state.drop_in_foot_anchor, VG__WHITE );
-   vg_line_point( w->state.drop_in_foot_anchor, 0.08f, VG__PINK );
-
-
    float a = player_get_heading_yaw();
    p1[0] = sinf( a );
    p1[1] = 0.0f;
@@ -711,21 +750,19 @@ static void player__walk_post_update(void){
       audio_lock();
       if( w->surface == k_surface_prop_concrete ){
          audio_oneshot_3d( 
-               &audio_footsteps[vg_randu32()%vg_list_size(audio_footsteps)], 
+               &audio_footsteps[vg_randu32(&vg.rand) % 4],
                localplayer.rb.co, 40.0f, 1.0f 
          );
       }
       else if( w->surface == k_surface_prop_grass ){
          audio_oneshot_3d( 
-           &audio_footsteps_grass[ vg_randu32()%
-                                    vg_list_size(audio_footsteps_grass)],
+           &audio_footsteps_grass[ vg_randu32(&vg.rand) % 6 ],
             localplayer.rb.co, 40.0f, 1.0f 
          );
       }
       else if( w->surface == k_surface_prop_wood ){
          audio_oneshot_3d( 
-           &audio_footsteps_wood[ vg_randu32()%
-                                    vg_list_size(audio_footsteps_wood)],
+           &audio_footsteps_wood[ vg_randu32(&vg.rand) % 6 ],
             localplayer.rb.co, 40.0f, 1.0f 
          );
       }
@@ -735,12 +772,93 @@ static void player__walk_post_update(void){
    w->state.step_phase = walk_phase;
 }
 
-static void player__walk_animate(void){
+void player__walk_update(void){
+   struct player_walk *w = &player_walk;
+
+   if( (w->state.activity == k_walk_activity_air) ||
+       (w->state.activity == k_walk_activity_ground) ||
+       (w->state.activity == k_walk_activity_oair) ||
+       (w->state.activity == k_walk_activity_oregular) ||
+       (w->state.activity == k_walk_activity_ipopoff) ){
+      player_walk_update_generic();
+   }
+}
+
+static void player_walk_animate_drop_in(void){
+   struct player_walk *w = &player_walk;
+   struct player_walk_animator *animator = &w->animator;
+   struct skeleton_anim *anim = w->anim_drop_in;
+
+   f32 length = (f32)(anim->length-1) / anim->rate,
+       time   = w->state.transition_t;
+
+   f32 walk_yaw = vg_alerpf( w->state.drop_in_start_angle, 
+                             w->state.drop_in_angle, animator->transition_t );
+   v3_lerp( w->state.drop_in_start, w->state.drop_in_target,
+            animator->transition_t, localplayer.rb.co );
+
+   q_axis_angle( localplayer.rb.q, (v3f){0,1,0}, walk_yaw + VG_PIf );
+
+   /* the drop in bit */
+   v3f final_co;
+   v4f final_q;
+   player_walk_drop_in_overhang_transform( animator->transition_t, 
+                                           final_co, final_q );
+
+   q_mul( final_q, localplayer.rb.q, localplayer.rb.q );
+   v3_lerp( localplayer.rb.co, final_co, animator->transition_t, 
+            localplayer.rb.co );
+
+   rb_update_matrices( &localplayer.rb );
+
+   v3_muladds( localplayer.rb.co, localplayer.rb.to_world[1], 
+               -0.1f*animator->transition_t, localplayer.rb.co );
+
+   v3_copy( localplayer.rb.co, animator->root_co );
+   v4_copy( localplayer.rb.q, animator->root_q );
+
+   /* for the camera purposes only */
+   v3f init_velocity;
+   player_walk_drop_in_vector( init_velocity );
+   v3_muls( init_velocity, animator->transition_t, localplayer.rb.v );
+   v3_copy( localplayer.rb.v, 
+            localplayer.cam_control.cam_velocity_smooth );
+}
+
+static void player_walk_animate_generic(void){
+   struct player_walk *w = &player_walk;
+   struct player_walk_animator *animator = &w->animator;
+
+   v4f _null;
+   rb_extrapolate( &localplayer.rb, animator->root_co, _null );
+
+   f32 walk_yaw = player_get_heading_yaw(),
+       head_yaw = localplayer.angles[0] + VG_PIf,
+       y = vg_angle_diff( head_yaw, -walk_yaw ),
+       p = vg_clampf( localplayer.angles[1], 
+                        -k_sit_pitch_limit, k_sit_pitch_limit );
+
+   if( fabsf(y) > k_sit_yaw_limit ){
+      y = 0.0f;
+      p = 0.0f;
+   }
+
+   animator->yaw = vg_lerpf( animator->yaw, y, vg.time_delta*2.0f );
+   animator->pitch = vg_lerpf( animator->pitch, p, vg.time_delta*2.8f );
+   q_axis_angle( animator->root_q, (v3f){0,1,0}, walk_yaw + VG_PIf );
+
+   v4f qrev;
+   q_axis_angle( qrev, (v3f){0,1,0}, VG_TAUf*0.5f );
+   q_mul( localplayer.rb.q, qrev, animator->root_q );
+}
+
+void player__walk_animate(void){
    struct player_walk *w = &player_walk;
    player_pose *pose = &localplayer.pose;
    struct player_walk_animator *animator = &w->animator;
 
-   animator->outro_type = w->state.outro_type;
+   animator->activity = w->state.activity;
+   animator->transition_t = w->state.transition_t;
 
    {
       f32 fly = (w->state.activity == k_walk_activity_air)? 1.0f: 0.0f, 
@@ -751,116 +869,127 @@ static void player__walk_animate(void){
 
       animator->fly = vg_lerpf( animator->fly, fly, rate*vg.time_delta );
       animator->run = vg_lerpf( animator->run, w->move_speed, 
-                                2.0f*vg.time_delta);
+                                8.0f*vg.time_delta);
    }
 
-   if( w->move_speed > 0.025f ){
-      /* TODO move */
-      float walk_norm = 30.0f/(float)w->anim_walk->length,
-            run_norm  = 30.0f/(float)w->anim_run->length,
-            walk_adv  = vg_lerpf( walk_norm, run_norm, w->move_speed );
+   if( animator->run > 0.025f ){
+      f32 walk_norm = 30.0f/(float)w->anim_walk->length,
+          run_norm  = 30.0f/(float)w->anim_run->length,
+          l;
 
-      w->state.walk_timer += walk_adv * vg.time_delta;
+      if( animator->run <= k_walkspeed )
+         l = (animator->run / k_walkspeed) * walk_norm;
+      else {
+         l = vg_lerpf( walk_norm, run_norm, 
+                      (animator->run-k_walkspeed) / (k_runspeed-k_walkspeed) );
+      }
+      w->state.walk_timer += l * vg.time_delta;
    }
    else
       w->state.walk_timer = 0.0f;
+
    animator->walk_timer = w->state.walk_timer;
 
+   player_walk_animate_generic();
+   if( w->state.activity == k_walk_activity_odrop_in ){
+      player_walk_animate_drop_in();
+   }
 
-   if( localplayer.immobile || (w->state.outro_type == k_walk_outro_drop_in) ){
-      v3_copy( localplayer.rb.co, animator->root_co );
-      v4_copy( localplayer.rb.q,  animator->root_q );
+   if( (w->state.activity == k_walk_activity_odrop_in) ||
+       (w->state.activity == k_walk_activity_oregular) ||
+       (w->state.activity == k_walk_activity_oair) ){
+      localplayer.cam_velocity_influence = w->animator.transition_t;
    }
-   else{
-      rb_extrapolate( &localplayer.rb, animator->root_co, animator->root_q );
+   else if( w->state.activity == k_walk_activity_ipopoff ){
+      localplayer.cam_velocity_influence = 1.0f-w->animator.transition_t;
    }
+   else
+      localplayer.cam_velocity_influence = 0.0f;
 
-   f32 walk_yaw = player_get_heading_yaw();
+   if( w->state.activity == k_walk_activity_sit ){
+      localplayer.cam_dist = 3.8f;
+   }
+   else {
+      localplayer.cam_dist = 1.8f;
+   }
+}
 
-   /* sitting */
-   animator->sit_t = w->state.sit_t;
+static void player_walk_pose_sit( struct player_walk_animator *animator,
+                                  player_pose *pose )
+{
+   mdl_keyframe bpose[32];
 
-   {
-      f32 head_yaw = localplayer.angles[0] + VG_PIf,
-          y = vg_angle_diff( head_yaw, -walk_yaw ),
-          p = vg_clampf( localplayer.angles[1], 
-                           -k_sit_pitch_limit, k_sit_pitch_limit );
-
-      if( fabsf(y) > k_sit_yaw_limit ){
-         y = 0.0f;
-         p = 0.0f;
-      }
-      animator->yaw = vg_lerpf( animator->yaw, y, vg.time_delta*2.0f );
-      animator->pitch = vg_lerpf( animator->pitch, p, vg.time_delta*2.8f );
-   }
+   struct player_walk *w = &player_walk;
+   struct skeleton *sk = &localplayer.skeleton;
 
-   if( w->state.outro_type ){
-      struct skeleton_anim *anim = 
-         player_walk_outro_anim( w->state.outro_type );
-      f32 outro_length = (f32)anim->length / anim->rate,
-          outro_time = vg.time - w->state.outro_start_time;
-      animator->outro_t = outro_time / outro_length;
-
-      if( w->state.outro_type == k_walk_outro_drop_in ){
-         float inv_rate      = 1.0f / anim->rate,
-               anim_frames   = anim->length * inv_rate,
-               step_frames   = 12.0f * inv_rate,
-               commit_frames = 6.0f * inv_rate,
-               drop_frames   = anim_frames - step_frames,
-               step_t        = vg_minf( 1.0f, outro_time / step_frames ),
-               remaind_time  = vg_maxf( 0.0f, outro_time - step_frames ),
-               dop_t         = vg_minf( 1.0f, remaind_time / drop_frames );
-         animator->commit_t  = vg_minf( 1.0f, remaind_time / commit_frames );
-
-         walk_yaw = vg_alerpf( w->state.drop_in_start_angle, 
-                               w->state.drop_in_angle, step_t );
-
-         v3_lerp( w->state.drop_in_start, w->state.drop_in_target,
-                  step_t, localplayer.rb.co );
-         v3_copy( localplayer.rb.co, animator->root_co );
-
-         /* for the camera purposes only */
-         v3f init_velocity;
-         player_walk_drop_in_vector( init_velocity );
-         v3_muls( init_velocity, dop_t, localplayer.rb.v );
-         v3_copy( localplayer.rb.v, 
-                  localplayer.cam_control.cam_velocity_smooth );
-
-         q_axis_angle( animator->root_q, (v3f){0.0f,1.0f,0.0f}, 
-                       walk_yaw + VG_PIf );
-
-         v3_copy( w->state.drop_in_foot_anchor, animator->foot_anchor );
-
-         /* the drop in bit */
-         if( step_t >= 1.0f ){
-            v3f final_co;
-            v4f final_q;
-            player_walk_drop_in_overhang_transform( dop_t, final_co, final_q );
-
-            q_mul( final_q, animator->root_q, animator->root_q );
-            v3_copy( final_co, animator->root_co );
-
-
-            v4_copy( animator->root_q, localplayer.rb.q );
-            rb_update_transform( &localplayer.rb );
-
-            v3_muladds( animator->root_co, localplayer.rb.to_world[1], 
-                        -0.1f*dop_t, animator->root_co );
-            v3_copy( animator->root_co, localplayer.rb.co );
-         }
+   f32 t  = animator->transition_t,
+       st = t * ((f32)(w->anim_sit->length-1)/30.0f);
+   skeleton_sample_anim( sk, w->anim_sit, st, bpose );
+
+   v4f qy,qp;
+   f32 *qh = bpose[localplayer.id_head-1].q;
+   q_axis_angle( qy, (v3f){0,1,0}, animator->yaw*0.5f*t );
+   q_axis_angle( qp, (v3f){0,0,1}, animator->pitch*t );
+   q_mul( qy, qh, qh );
+   q_mul( qh, qp, qh );
+   q_normalize( qh );
+
+   qh = bpose[localplayer.id_chest-1].q;
+   q_axis_angle( qy, (v3f){0,1,0}, animator->yaw*0.5f*t );
+   q_mul( qy, qh, qh );
+   q_normalize( qh );
+
+   skeleton_lerp_pose( sk, pose->keyframes, bpose, 
+                       vg_minf(1.0f,t*10.0f), pose->keyframes );
+}
 
-         return;
-      }
-      else{
-         v3_muladds( animator->root_co, localplayer.rb.to_world[1], 
-                     -0.1f*animator->outro_t, animator->root_co );
-      }
-   }
+enum walk_transition_type {
+   k_walk_transition_in,
+   k_walk_transition_out,
+   k_walk_transition_outin,
+};
+
+static void player_walk_pose_transition( 
+      struct player_walk_animator *animator, struct skeleton_anim *anim,
+      enum walk_transition_type type,
+      mdl_keyframe apose[32], f32 *mask, player_pose *pose ){
+
+   mdl_keyframe bpose[32];
+
+   struct player_walk *w = &player_walk;
+   struct skeleton *sk = &localplayer.skeleton;
+   
+   f32 length   = (f32)(anim->length-1) / anim->rate,
+       t        = animator->transition_t * length,
+       blend    = 1.0f;
+
+   if( type == k_walk_transition_in || type == k_walk_transition_outin )
+      blend = vg_minf( blend, length-t );
+
+   if( type == k_walk_transition_out || type == k_walk_transition_outin )
+      blend = vg_minf( blend, t );
 
-   q_axis_angle( animator->root_q, (v3f){0.0f,1.0f,0.0f}, walk_yaw + VG_PIf );
+   blend = vg_smoothstepf( vg_minf(1,blend/k_anim_transition) );
+
+   skeleton_sample_anim_clamped( sk, anim, t, bpose );
+
+   mdl_keyframe *kf_board = &bpose[localplayer.id_board-1];
+   f32 yaw = animator->board_yaw * VG_TAUf * 0.5f;
+
+   v4f qyaw;
+   q_axis_angle( qyaw, (v3f){0,1,0}, yaw );
+   q_mul( kf_board->q, qyaw, kf_board->q );
+   q_normalize( kf_board->q );
+
+   if( mask ){
+      for( i32 i=0; i<sk->bone_count-1; i ++ )
+         keyframe_lerp( apose+i, bpose+i, blend*mask[i], pose->keyframes+i );
+   }
+   else
+      skeleton_lerp_pose( sk, apose, bpose, blend, pose->keyframes );
 }
 
-static void player__walk_pose( void *_animator, player_pose *pose ){
+void player__walk_pose( void *_animator, player_pose *pose ){
    struct player_walk *w = &player_walk;
    struct player_walk_animator *animator = _animator;
    struct skeleton *sk = &localplayer.skeleton;
@@ -872,135 +1001,131 @@ static void player__walk_pose( void *_animator, player_pose *pose ){
 
    float walk_norm = (float)w->anim_walk->length/30.0f,
          run_norm  = (float)w->anim_run->length/30.0f,
-         t = animator->walk_timer,
-         l = vg_clampf( animator->run*15.0f, 0.0f, 1.0f ),
-         idle_walk = vg_clampf( (animator->run-0.1f)/(1.0f-0.1f), 0.0f, 1.0f );
+         t = animator->walk_timer;
 
    /* walk/run */
    mdl_keyframe apose[32], bpose[32];
-   skeleton_sample_anim( sk, w->anim_walk, t*walk_norm, apose );
-   skeleton_sample_anim( sk, w->anim_run,  t*run_norm, bpose );
-
-   skeleton_lerp_pose( sk, apose, bpose, l, apose );
-
-   /* idle */
-   skeleton_sample_anim( sk, w->anim_idle, vg.time*0.1f, bpose );
-   skeleton_lerp_pose( sk, apose, bpose, 1.0f-idle_walk, apose );
+   if( animator->run <= k_walkspeed ){ 
+      /* walk / idle */
+      f32 l = vg_minf( 1, (animator->run/k_walkspeed)*6.0f );
+      skeleton_sample_anim( sk, w->anim_idle, vg.time*0.1f, apose );
+      skeleton_sample_anim( sk, w->anim_walk, t*walk_norm, bpose );
+      skeleton_lerp_pose( sk, apose, bpose, l, apose );
+   }
+   else { 
+      /* walk / run */
+      f32 l = (animator->run-k_walkspeed) / (k_runspeed-k_walkspeed);
+      skeleton_sample_anim( sk, w->anim_walk, t*walk_norm, apose );
+      skeleton_sample_anim( sk, w->anim_run, t*run_norm, bpose );
+      skeleton_lerp_pose( sk, apose, bpose, l, apose );
+   }
 
    /* air */
    skeleton_sample_anim( sk, w->anim_jump, vg.time*0.6f, bpose );
    skeleton_lerp_pose( sk, apose, bpose, animator->fly, apose );
 
-   /* sit */
-   if( animator->sit_t > 0.0f ){
-      f32 sit_norm = (f32)(w->anim_sit->length-1)/30.0f,
-                st = vg_minf( 1.0f, animator->sit_t );
-      skeleton_sample_anim( sk, w->anim_sit, st*sit_norm, bpose );
-
-      v4f qy,qp;
-      f32 *qh = bpose[localplayer.id_head-1].q;
-      q_axis_angle( qy, (v3f){0.0f,1.0f,0.0f}, animator->yaw*0.5f*st );
-      q_axis_angle( qp, (v3f){0.0f,0.0f,1.0f}, animator->pitch*st );
-      q_mul( qy, qh, qh );
-      q_mul( qh, qp, qh );
-      q_normalize( qh );
-
-      qh = bpose[localplayer.id_chest-1].q;
-      q_axis_angle( qy, (v3f){0.0f,1.0f,0.0f}, animator->yaw*0.5f*st );
-      q_mul( qy, qh, qh );
-      q_normalize( qh );
-
-      skeleton_lerp_pose( sk, apose, bpose, vg_minf(1.0f,st*10.0f), apose );
-   }
+   mdl_keyframe *kf_board = &apose[localplayer.id_board-1];
+   f32 yaw = animator->board_yaw;
 
-   if( animator->outro_type ){
-      struct skeleton_anim *anim = player_walk_outro_anim(animator->outro_type);
+   if( animator->activity == k_walk_activity_ipopoff )
+      if( animator->transition_t > 0.5f )
+         yaw += 1.0f;
 
-      if( !anim ){
-         skeleton_copy_pose( sk, apose, pose->keyframes );
-         return;
+   v4f qyaw;
+   q_axis_angle( qyaw, (v3f){0,1,0}, yaw * VG_TAUf * 0.5f );
+   q_mul( kf_board->q, qyaw, kf_board->q );
+   q_normalize( kf_board->q );
+
+   /* sit */
+   if( (animator->activity == k_walk_activity_sit) ||
+       (animator->activity == k_walk_activity_sit_up) )
+   {
+      skeleton_copy_pose( sk, apose, pose->keyframes );
+      player_walk_pose_sit( animator, pose );
+   }
+   else if( animator->activity == k_walk_activity_odrop_in ){
+      player_walk_pose_transition( 
+            animator, w->anim_drop_in, k_walk_transition_out, apose, 
+            NULL, pose );
+   }
+   else if( animator->activity == k_walk_activity_oair ){
+      player_walk_pose_transition(
+            animator, w->anim_jump_to_air, k_walk_transition_out, apose, 
+            NULL, pose );
+   }
+   else if( animator->activity == k_walk_activity_oregular ){
+      player_walk_pose_transition( 
+            animator, w->anim_intro, k_walk_transition_out, apose, 
+            NULL, pose );
+   }
+   else if( animator->activity == k_walk_activity_ipopoff ){
+      if( animator->run > 0.2f ){
+         f32 t = 1.0f-vg_minf( animator->run-0.2f, 1.0f ),
+             mask[ 32 ];
+
+         for( u32 i=0; i<32; i ++ ) 
+            mask[i] = 1.0f;
+
+         mask[ localplayer.id_ik_foot_l-1 ] = t;
+         mask[ localplayer.id_ik_foot_r-1 ] = t;
+         mask[ localplayer.id_ik_knee_l-1 ] = t;
+         mask[ localplayer.id_ik_knee_r-1 ] = t;
+         mask[ localplayer.id_hip-1 ] = t;
+         player_walk_pose_transition( 
+               animator, w->anim_popoff, k_walk_transition_in, apose,
+               mask, pose );
       }
-      
-      f32 outro_length = (f32)anim->length / anim->rate,
-          outro_time = animator->outro_t*outro_length;
-
-      skeleton_sample_anim_clamped( sk, anim, outro_time, bpose );
-      skeleton_lerp_pose( sk, apose, bpose, animator->outro_t*10.0f, 
-                          pose->keyframes );
-
-      if( animator->outro_type == k_walk_outro_drop_in ){
-         m4x3f transform, inverse;
-         q_m3x3( pose->root_q, transform );
-         v3_copy( pose->root_co, transform[3] );
-         m4x3_invert_affine( transform, inverse );
-
-         v3f anchored_pos;
-         m4x3_mulv( inverse, animator->foot_anchor, anchored_pos );
-
-         v3_lerp( pose->keyframes[ localplayer.id_ik_foot_r-1 ].co, 
-                  anchored_pos, 
-                  1.0f-animator->commit_t,
-                  pose->keyframes[ localplayer.id_ik_foot_r-1 ].co );
+      else{
+         player_walk_pose_transition( 
+               animator, w->anim_popoff, k_walk_transition_in, apose,
+               NULL, pose );
       }
    }
-   else
+   else {
       skeleton_copy_pose( sk, apose, pose->keyframes );
+   }
 }
 
-static void player__walk_post_animate(void){
+void player__walk_post_animate(void){
    /* 
     * Camera 
     */
    struct player_walk *w = &player_walk;
 
-   if( w->state.outro_type ){
-      struct skeleton_anim *anim = player_walk_outro_anim(w->state.outro_type);
-
-      f32 outro_length = (f32)anim->length / anim->rate,
-          outro_time   = vg.time - w->state.outro_start_time,
-          outro_t      = outro_time / outro_length;
-
-      localplayer.cam_velocity_influence = outro_t;
-   }
-   else
-      localplayer.cam_velocity_influence = 0.0f;
 }
 
-static void player__walk_im_gui(void){
+void player__walk_im_gui(void){
    struct player_walk *w = &player_walk;
-   player__debugtext( 1, "V:  %5.2f %5.2f %5.2f",localplayer.rb.v[0],
-                                                 localplayer.rb.v[1],
-                                                 localplayer.rb.v[2] );
+   player__debugtext( 1, "V:  %5.2f %5.2f %5.2f (%5.2fm/s)",
+      localplayer.rb.v[0], localplayer.rb.v[1], localplayer.rb.v[2],
+      v3_length(localplayer.rb.v) );
    player__debugtext( 1, "CO: %5.2f %5.2f %5.2f",localplayer.rb.co[0],
                                                  localplayer.rb.co[1],
                                                  localplayer.rb.co[2] );
+   player__debugtext( 1, "transition: %5.2f ", w->state.transition_t );
    player__debugtext( 1, "activity: %s\n",
-                           (const char *[]){ "k_walk_activity_air",
-                                             "k_walk_activity_ground",
-                                             "k_walk_activity_sleep",
-                                             "k_walk_activity_lockedmove",
-                                             "k_walk_activity_sit",
-                                             "k_walk_activity_sit_up" }
+                           (const char *[]){ "air",
+                                             "ground",
+                                             "sit",
+                                             "sit_up",
+                                             "inone",
+                                             "ipopoff",
+                                             "oair",
+                                             "odrop_in",
+                                             "oregular" }
                                              [w->state.activity] );
    player__debugtext( 1, "surface: %s\n",
                            (const char *[]){ "concrete",
                                              "wood",
                                              "grass",
                                              "tiles",
-                                             "metal" }
+                                             "metal",
+                                             "snow",
+                                             "sand" }
                                              [w->surface] );
-
-   if( w->state.outro_type ){
-      struct skeleton_anim *anim = 
-         player_walk_outro_anim( w->state.outro_type );
-
-      f32 outro_length = (f32)anim->length / anim->rate,
-          outro_time   = vg.time - w->state.outro_start_time;
-      player__debugtext( 1, "outro time: %f / %f", outro_time, outro_length );
-   }
 }
 
-static void player__walk_bind(void){
+void player__walk_bind(void){
    struct player_walk *w = &player_walk;
    struct skeleton *sk = &localplayer.skeleton;
 
@@ -1012,62 +1137,67 @@ static void player__walk_bind(void){
    w->anim_drop_in      = skeleton_get_anim( sk, "drop_in" );
    w->anim_intro        = skeleton_get_anim( sk, "into_skate" );
    w->anim_sit          = skeleton_get_anim( sk, "sit" );
+   w->anim_popoff       = skeleton_get_anim( sk, "pop_off_short" );
 }
 
-static void player__walk_transition(void){
+void player__walk_transition( bool grounded, f32 board_yaw ){
    struct player_walk *w = &player_walk;
    w->state.activity = k_walk_activity_air;
-   w->state.outro_type = k_walk_outro_none;
-   w->state.outro_start_time = 0.0;
+
+   if( grounded ){
+      w->state.activity = k_walk_activity_ipopoff;
+   }
+
+   w->state.transition_t = 0.0f;
    w->state.jump_queued = 0;
    w->state.jump_input_time = 0.0;
    w->state.walk_timer = 0.0f;
    w->state.step_phase = 0;
+   w->animator.board_yaw = fmodf( board_yaw, 2.0f );
+   rb_update_matrices( &localplayer.rb );
+}
+
+void player__walk_reset(void)
+{
+   struct player_walk *w = &player_walk;
+   w->state.activity = k_walk_activity_air;
+   w->state.transition_t = 0.0f;
 
    v3f fwd = { 0.0f, 0.0f, 1.0f };
    q_mulv( localplayer.rb.q, fwd, fwd );
    q_axis_angle( localplayer.rb.q, (v3f){0.0f,1.0f,0.0f}, 
                  atan2f(fwd[0], fwd[2]) );
 
-   rb_update_transform( &localplayer.rb );
+   rb_update_matrices( &localplayer.rb );
 }
 
-static void player__walk_reset(void){
-   struct player_walk *w = &player_walk;
-   w->state.activity = k_walk_activity_air;
-   w->state.outro_type = k_walk_outro_none;
-   w->state.outro_start_time = 0.0;
-}
-
-static void player__walk_animator_exchange( bitpack_ctx *ctx, void *data ){
+void player__walk_animator_exchange( bitpack_ctx *ctx, void *data ){
    struct player_walk_animator *animator = data;
 
    bitpack_qv3f( ctx, 24, -1024.0f, 1024.0f, animator->root_co );
    bitpack_qquat( ctx, animator->root_q );
    bitpack_qf32( ctx, 8, 0.0f, 1.0f, &animator->fly );
-   bitpack_qf32( ctx, 8, 0.0f, 1.0f, &animator->run );
-   bitpack_qf32( ctx, 8, 0.0f, 1.0f, &animator->walk );
+   bitpack_qf32( ctx, 8, 0.0f, k_runspeed, &animator->run );
    bitpack_qf32( ctx, 16, 0.0f, 120.0f, &animator->walk_timer );
 
    for( int i=0; i<1; i++ ){ /* without this you get a warning from gcc. lol */
-      bitpack_bytes( ctx, 8, &animator->outro_type );
-      if( animator->outro_type ){
-         bitpack_bytes( ctx, sizeof(animator->foot_anchor), 
-                        animator->foot_anchor );
-         bitpack_qf32( ctx, 8, 0.0f, 1.0f, &animator->outro_t );
-         bitpack_qf32( ctx, 8, 0.0f, 1.0f, &animator->commit_t );
-      }
+      bitpack_bytes( ctx, 8, &animator->activity );
    }
 
-   u32 code = bitpack_qf32( ctx, 8, 0.0f, 1.0f, &animator->sit_t );
-   if( code ){
+   bitpack_qf32( ctx, 8, 0.0f, 1.0f, &animator->transition_t );
+
+   if( (animator->activity == k_walk_activity_sit) || 
+       (animator->activity == k_walk_activity_sit_up) ){
       bitpack_qf32( ctx, 8, -k_sit_yaw_limit, k_sit_yaw_limit, &animator->yaw );
       bitpack_qf32( ctx, 8, -k_sit_pitch_limit, k_sit_pitch_limit, 
                      &animator->pitch );
    }
+
+   bitpack_qf32( ctx, 16, -100.0f, 100.0f, &animator->board_yaw );
 }
 
-static void player__walk_sfx_oneshot( u8 id, v3f pos, f32 volume ){
+void player__walk_sfx_oneshot( u8 id, v3f pos, f32 volume )
+{
    audio_lock();
 
    if( id == k_player_walk_soundeffect_splash ){
@@ -1076,4 +1206,3 @@ static void player__walk_sfx_oneshot( u8 id, v3f pos, f32 volume ){
 
    audio_unlock();
 }
-#endif /* PLAYER_DEVICE_WALK_H */