smooth replay resume
[carveJwlIkooP6JGAAIwe30JlM.git] / player_replay.c
index 09cc136cbd477d6395aaea837b2486f815ae1da9..47da357c4ede76fbd3ae0454a69ec649bd5a14ba 100644 (file)
@@ -11,48 +11,85 @@ VG_STATIC void replay_clear( replay_buffer *replay ){
    replay->cursor = -99999.9;
 }
 
-replay_gamestate *replay_frame_gamestate( replay_frame *frame, u16 index ){
+replay_gamestate *replay_frame_gamestate( replay_frame *frame ){
    void *baseptr = frame;
-   
-   replay_gamestate *array = (baseptr + vg_align8( sizeof(replay_frame)));
-   return &array[ index ];
+   return baseptr + vg_align8(sizeof(replay_frame));
 }
 
-replay_sfx *replay_frame_sfx( replay_frame *frame, u16 index ){
-   void *gsarr = replay_frame_gamestate( frame, 0 );
-   u32 gssize = frame->gamestate_count * sizeof(replay_gamestate);
+void *replay_gamestate_subsystem_data( replay_gamestate *gs ){
+   void *baseptr = gs;
+   return baseptr + vg_align8(sizeof(replay_gamestate));
+}
 
-   replay_sfx *array = (gsarr + vg_align8(gssize));
+u32 replay_frame_gamestate_total_size( u32 subsystem_gamestate_size ){
+   if( subsystem_gamestate_size ){
+      return vg_align8( sizeof(replay_gamestate) ) + 
+             vg_align8( subsystem_gamestate_size );
+   }
+   else
+      return 0;
+}
+
+replay_sfx *replay_frame_sfx( replay_frame *frame, u32 index ){
+   void *gs = replay_frame_gamestate( frame );
+   u32 total_size = 
+      replay_frame_gamestate_total_size( frame->subsystem_gamestate_size );
+
+   replay_sfx *array = (gs + total_size);
    return &array[index];
 }
 
-u32 _replay_frame_size( u16 gamestate_count, u16 sfx_count ){
+u32 _replay_frame_size( u32 subsystem_gamestate_size, u32 sfx_count ){
    return vg_align8( sizeof( replay_frame ) ) + 
-          vg_align8( gamestate_count * sizeof(replay_gamestate) ) +
+          replay_frame_gamestate_total_size( subsystem_gamestate_size ) +
           vg_align8( sfx_count * sizeof(replay_sfx) );
 }
 
 u32 replay_frame_size( replay_frame *frame ){
-   return _replay_frame_size( frame->gamestate_count, frame->sfx_count );
+   return _replay_frame_size( frame->subsystem_gamestate_size, 
+                              frame->sfx_count );
+}
+
+VG_STATIC void replay_tailpop( replay_buffer *replay ){
+   if( replay->cursor_frame == replay->tail )
+      replay->cursor_frame = NULL;
+   if( replay->statehead == replay->tail )
+      replay->statehead = NULL;
+
+   replay->tail = replay->tail->r;
+
+   if( replay->tail )
+      replay->tail->l = NULL;
+   else
+      replay->head = NULL;
 }
 
 VG_STATIC replay_frame *replay_newframe( replay_buffer *replay, 
-                                         u16 gamestate_count, u16 sfx_count ){
+                                         u32 subsystem_gamestate_size, 
+                                         u32 sfx_count ){
    replay_frame *frame = NULL;
    if( replay->head ){
       assert( replay->head );
 
       u32 headsize = replay_frame_size( replay->head ),
           nextpos  = ((void *)replay->head - replay->data) + headsize,
-          nextsize = _replay_frame_size( gamestate_count, sfx_count );
+          nextsize = _replay_frame_size( subsystem_gamestate_size, sfx_count );
 
       if( nextsize > replay->size ){
          vg_error( "Keyframe too big\n" );
          return NULL;
       }
 
-      if( nextpos + nextsize > replay->size )
+      if( nextpos + nextsize > replay->size ){
          nextpos = 0;
+         
+         /* maintain contiguity */
+         while( replay->tail ){
+            if( (void *)replay->tail - replay->data )
+               replay_tailpop( replay );
+            else break;
+         }
+      }
 
 check_again:;
 
@@ -60,21 +97,10 @@ check_again:;
 
       if( tailpos >= nextpos ){
          if( nextpos + nextsize > tailpos ){
-            /* remove links */
-            if( replay->cursor_frame == replay->tail )
-               replay->cursor_frame = NULL;
-            if( replay->statehead == replay->tail )
-               replay->statehead = NULL;
+            replay_tailpop( replay );
 
-            /* pop node */
-            replay->tail = replay->tail->r;
-
-            if( replay->tail ) {
-               replay->tail->l = NULL;
+            if( replay->tail )
                goto check_again;
-            }
-            else
-               replay->head = NULL;
          }
       }
 
@@ -86,13 +112,13 @@ check_again:;
    else
       frame = replay->data;
 
-   frame->gamestate_count = gamestate_count;
+   frame->subsystem_gamestate_size = subsystem_gamestate_size;
    frame->sfx_count = sfx_count;
    frame->l = replay->head;
    frame->r = NULL;
    replay->head = frame;
    if( !replay->tail ) replay->tail = frame;
-   if( gamestate_count ) replay->statehead = frame;
+   if( subsystem_gamestate_size ) replay->statehead = frame;
 
    return frame;
 }
@@ -143,25 +169,51 @@ VG_STATIC void replay_seek( replay_buffer *replay, f64 t ){
 
 VG_STATIC replay_frame *replay_find_recent_stateframe( replay_buffer *replay ){
    replay_frame *frame = replay->cursor_frame;
-
    u32 i=4096;
    while( i --> 0 ){
       if( !frame ) return frame;
-      if( frame->gamestate_count ) return frame;
+      if( frame->subsystem_gamestate_size ) return frame;
       frame = frame->l;
    }
 
    return NULL;
 }
 
+VG_STATIC f32 replay_subframe_time( replay_buffer *replay ){
+   replay_frame *frame = replay->cursor_frame;
+   if( !frame ) return 0.0f;
+   replay_frame *next = frame->r;
+   if( next ){
+      f64 l = next->time - frame->time,
+          t = (replay->cursor - frame->time) / l;
+      return vg_clampf( t, 0.0f, 1.0f );
+   }
+   else 
+      return 0.0f;
+}
+
+VG_STATIC void replay_get_frame_camera( replay_frame *frame, camera *cam ){
+   cam->fov = frame->cam_fov;
+   v3_copy( frame->cam_pos, cam->pos );
+   v3_copy( frame->cam_angles, cam->angles );
+}
+
 VG_STATIC void replay_get_camera( replay_buffer *replay, camera *cam ){
    cam->nearz = 0.1f;
    cam->farz = 100.0f;
    if( replay->cursor_frame ){
-      /* TODO: frame lerp */
-      cam->fov = replay->cursor_frame->cam_fov;
-      v3_copy( replay->cursor_frame->cam_pos, cam->pos );
-      v3_copy( replay->cursor_frame->cam_angles, cam->angles );
+      replay_frame *next = replay->cursor_frame->r;
+
+      if( next ){
+         camera temp;
+         
+         replay_get_frame_camera( replay->cursor_frame, cam );
+         replay_get_frame_camera( next, &temp );
+         camera_lerp( cam, &temp, replay_subframe_time( replay ), cam );
+      }
+      else {
+         replay_get_frame_camera( replay->cursor_frame, cam );
+      }
    }
    else {
       v3_zero( cam->pos );
@@ -170,68 +222,206 @@ VG_STATIC void replay_get_camera( replay_buffer *replay, camera *cam ){
    }
 }
 
-VG_STATIC void skaterift_replay_pre_update(void){
-   if( skaterift.activity != k_skaterift_replay ) return;
+struct replay_rb{
+   v3f co, v, w;
+   v4f q;
+};
 
-   f64 speed = 1.0;
-   f64 target = skaterift.replay.cursor;
+VG_STATIC 
+void skaterift_record_frame( replay_buffer *replay, int force_gamestate ){
+   f64 delta      = 9999999.9,
+       statedelta = 9999999.9;
+
+   if( replay->head )
+      delta = vg.time - replay->head->time;
+
+   if( replay->statehead )
+      statedelta = vg.time - replay->statehead->time;
+
+   const f64 k_replay_rate = 1.0/30.0,
+             k_gamestate_rate = 0.5;
+
+   int save_frame = 0,
+       save_state = 0;
+
+   if( force_gamestate ) save_state = 1;
+   if( statedelta > k_gamestate_rate ) save_state = 1;
+   if( delta > k_replay_rate ) save_frame = 1;
+   if( save_state ) save_frame = 1;
+
+   if( !save_frame ) return;
+
+   u32 gamestate_size = 0;
+
+   if( save_state ){
+      gamestate_size = (u32 []){ 
+         [k_player_subsystem_walk ] = sizeof(struct player_walk_state),
+         [k_player_subsystem_drive] = 0,
+         [k_player_subsystem_skate] = sizeof(struct player_skate_state),
+         [k_player_subsystem_dead ] = localplayer.ragdoll.part_count * 
+                                       sizeof(struct replay_rb)
+      }[ localplayer.subsystem ];
+   }
+   
+   replay_frame *frame = replay_newframe( replay, gamestate_size, 0 );
+
+   if( save_state ){
+      replay_gamestate *gs = replay_frame_gamestate( frame );
+      gs->system = localplayer.subsystem;
+
+      /* permanent block */
+      memcpy( &gs->rb, &localplayer.rb, sizeof(rigidbody) );
+      memcpy( &gs->cam_control, &localplayer.cam_control, 
+               sizeof(struct player_cam_controller) );
+      v3_copy( localplayer.angles, gs->angles );
+
+      void *dst = replay_gamestate_subsystem_data( gs );
+
+      /* subsytem/dynamic block */
+      if( localplayer.subsystem == k_player_subsystem_walk )
+         memcpy( dst, &localplayer._walk.state, gamestate_size );
+      else if( localplayer.subsystem == k_player_subsystem_skate )
+         memcpy( dst, &localplayer._skate.state, gamestate_size );
+      else if( localplayer.subsystem == k_player_subsystem_dead ){
+         struct replay_rb *arr = dst;
+         for( u32 i=0; i<localplayer.ragdoll.part_count; i ++ ){
+            rigidbody *rb = &localplayer.ragdoll.parts[i].obj.rb;
+            v3_copy( rb->co, arr[i].co );
+            v3_copy( rb->w, arr[i].w );
+            v3_copy( rb->v, arr[i].v );
+            v4_copy( rb->q, arr[i].q );
+         }
+      }
+   }
+
+   replay->cursor = vg.time;
+   replay->cursor_frame = frame;
+
+   player_animation *res = &frame->anim;
+   v3_zero( res->root_co );
+   q_identity( res->root_q );
+   res->type = k_player_animation_type_absolute;
+
+   struct skeleton *sk = &localplayer.playeravatar->sk;
+   skeleton_decompose_mtx_absolute( sk, res->pose );
+
+   memcpy( &frame->board_pose, &localplayer.board_pose, 
+            sizeof(localplayer.board_pose) );
+   frame->time = vg.time;
+   v3_copy( localplayer.cam.pos, frame->cam_pos );
+   v3_copy( localplayer.cam.angles, frame->cam_angles );
+   frame->cam_fov = localplayer.cam.fov;
+}
+
+VG_STATIC
+void skaterift_restore_frame( replay_frame *frame ){
+   replay_gamestate *gs = replay_frame_gamestate( frame );
+   void *src = replay_gamestate_subsystem_data( gs );
 
-   if( vg_getkey( SDLK_9 ) ){
-      target -= vg.time_frame_delta * speed;
-      skaterift.replay_control = k_replay_control_scrub;
-      replay_seek( &skaterift.replay, target );
+   /* TODO: Move this to subsystem bindings now that its variable */
+   if( gs->system == k_player_subsystem_walk ){
+      memcpy( &localplayer._walk.state, src,
+              frame->subsystem_gamestate_size );
    }
-   if( vg_getkey( SDLK_0 ) ){
-      target += vg.time_frame_delta * speed;
-      skaterift.replay_control = k_replay_control_scrub;
-      replay_seek( &skaterift.replay, target );
+   else if( gs->system == k_player_subsystem_skate ){
+      memcpy( &localplayer._skate.state, src,
+              frame->subsystem_gamestate_size );
    }
+   else if( gs->system == k_player_subsystem_dead ){
+      player__dead_transition( &localplayer );
+      struct replay_rb *arr = src;
+
+      for( u32 i=0; i<localplayer.ragdoll.part_count; i ++ ){
+         struct ragdoll_part *part = &localplayer.ragdoll.parts[i];
+         rigidbody *rb = &part->obj.rb;
 
-   if( vg_getkey( SDLK_7 ) )
-      skaterift.replay_control = k_replay_control_play;
+         v3_copy( arr[i].co, rb->co );
+         v3_copy( arr[i].w, rb->w );
+         v3_copy( arr[i].v, rb->v );
+         v4_copy( arr[i].q, rb->q );
 
-   if( skaterift.replay_control == k_replay_control_play ){
-      target += vg.time_frame_delta;
-      replay_seek( &skaterift.replay, target );
+         v3_copy( arr[i].co, part->prev_co );
+         v4_copy( arr[i].q, part->prev_q );
+      }
    }
 
-   if( vg_getkey( SDLK_8 ) ){
-      replay_frame *prev = replay_find_recent_stateframe( &skaterift.replay );
+   localplayer.subsystem = gs->system;
 
-      if( prev ){
-         /* TODO: Make gamestate_apply function / swap ... */
-         replay_gamestate *gs = replay_frame_gamestate( prev, 0 );
+   memcpy( &localplayer.rb, &gs->rb, sizeof(rigidbody) );
+   v3_copy( gs->angles, localplayer.angles );
 
-         if( gs->system == k_player_subsystem_walk ){
-            memcpy( &localplayer._walk.state, &gs->walk, 
-                     sizeof(struct player_walk_state) );
-         }
-         else if( gs->system == k_player_subsystem_skate ){
-            memcpy( &localplayer._skate.state, &gs->skate, 
-                     sizeof(struct player_skate_state) );
-         }
-         localplayer.subsystem = gs->system;
+   v3_copy( frame->cam_pos, localplayer.cam.pos );
+   v3_copy( frame->cam_angles, localplayer.cam.angles );
+   localplayer.cam.fov = frame->cam_fov;
 
-         memcpy( &localplayer.rb, &gs->rb, sizeof(rigidbody) );
-         v3_copy( gs->angles, localplayer.angles );
+   memcpy( &localplayer.cam_control, &gs->cam_control, 
+            sizeof(struct player_cam_controller) );
 
-         v3_copy( prev->cam_pos, localplayer.cam.pos );
-         v3_copy( prev->cam_angles, localplayer.cam.angles );
-         localplayer.cam.fov = prev->cam_fov;
+   /* chop end off replay */
+   frame->r = NULL;
+   skaterift.replay.statehead = frame;
+   skaterift.replay.head = frame;
+   skaterift.replay.cursor_frame = frame;
+   skaterift.replay.cursor = frame->time;
+   skaterift.replay_control = k_replay_control_scrub;
+   skaterift.activity = k_skaterift_default;
+   vg.time = frame->time;
+}
 
-         memcpy( &localplayer.cam_control, &gs->cam_control, 
-                  sizeof(struct player_cam_controller) );
+VG_STATIC void skaterift_replay_pre_update(void){
+   if( skaterift.activity != k_skaterift_replay ) return;
+
+   f64 speed = vg.time_frame_delta * 1.0;
+   f64 target = skaterift.replay.cursor;
 
-         /* chop end off replay */
-         prev->r = NULL;
-         skaterift.replay.statehead = prev;
-         skaterift.replay.head = prev;
-         skaterift.replay.cursor_frame = prev;
-         skaterift.replay.cursor = prev->time;
+   if( skaterift.replay_control == k_replay_control_resume ){
+      if( skaterift.replay.cursor_frame == skaterift.resume_target ||
+          skaterift.replay.cursor_frame == NULL ){
+         skaterift_restore_frame( skaterift.resume_target );
+      }
+      else {
+         vg_slewf( &skaterift.resume_transition, 1.0f, 
+                   vg.time_frame_delta * (1.0f/1.0f) );
+
+         if( skaterift.resume_transition >= 1.0f )
+            skaterift_restore_frame( skaterift.resume_target );
+         else {
+            target = vg_lerp( skaterift.resume_begin, 
+                              skaterift.resume_target->time, 
+                              vg_smoothstepf( skaterift.resume_transition ) );
+            replay_seek( &skaterift.replay, target );
+         }
+      }
+   }
+   else {
+      if( vg_getkey( SDLK_9 ) ){
+         target -= speed;
          skaterift.replay_control = k_replay_control_scrub;
-         skaterift.activity = k_skaterift_default;
-         vg.time = prev->time;
-         return;
+         replay_seek( &skaterift.replay, target );
+      }
+      if( vg_getkey( SDLK_0 ) ){
+         target += speed;
+         skaterift.replay_control = k_replay_control_scrub;
+         replay_seek( &skaterift.replay, target );
+      }
+
+      if( vg_getkey( SDLK_7 ) )
+         skaterift.replay_control = k_replay_control_play;
+
+      if( skaterift.replay_control == k_replay_control_play ){
+         target += vg.time_frame_delta;
+         replay_seek( &skaterift.replay, target );
+      }
+
+      if( vg_getkey( SDLK_8 ) ){
+         replay_frame *prev = replay_find_recent_stateframe(&skaterift.replay);
+
+         if( prev ){
+            skaterift.replay_control = k_replay_control_resume;
+            skaterift.resume_target = prev;
+            skaterift.resume_begin = skaterift.replay.cursor;
+            skaterift.resume_transition = 0.0f;
+         }
       }
    }
 }
@@ -251,6 +441,8 @@ VG_STATIC void skaterift_replay_debug_info(void){
    if( replay->statehead ){
       u32 state = (void *)replay->statehead - replay->data;
       player__debugtext( 1, "gs @%u\n", state );
+      player__debugtext( 1, "gamestate_size: %u\n", 
+                         replay->statehead->subsystem_gamestate_size );
    }
    else
       player__debugtext( 1, "gs @NULL\n" );