6 #include "vg/vg_perlin.h"
9 VG_STATIC
void player__skate_bind( player_instance
*player
)
11 struct player_skate
*s
= &player
->_skate
;
12 struct player_avatar
*av
= player
->playeravatar
;
13 struct skeleton
*sk
= &av
->sk
;
15 rb_update_transform( &player
->rb
);
16 s
->anim_grind
= skeleton_get_anim( sk
, "pose_grind" );
17 s
->anim_grind_jump
= skeleton_get_anim( sk
, "pose_grind_jump" );
18 s
->anim_stand
= skeleton_get_anim( sk
, "pose_stand" );
19 s
->anim_highg
= skeleton_get_anim( sk
, "pose_highg" );
20 s
->anim_air
= skeleton_get_anim( sk
, "pose_air" );
21 s
->anim_slide
= skeleton_get_anim( sk
, "pose_slide" );
22 s
->anim_push
= skeleton_get_anim( sk
, "push" );
23 s
->anim_push_reverse
= skeleton_get_anim( sk
, "push_reverse" );
24 s
->anim_ollie
= skeleton_get_anim( sk
, "ollie" );
25 s
->anim_ollie_reverse
= skeleton_get_anim( sk
, "ollie_reverse" );
26 s
->anim_grabs
= skeleton_get_anim( sk
, "grabs" );
29 VG_STATIC
void player__skate_kill_audio( player_instance
*player
)
31 struct player_skate
*s
= &player
->_skate
;
35 s
->aud_main
= audio_channel_fadeout( s
->aud_main
, 0.1f
);
37 s
->aud_air
= audio_channel_fadeout( s
->aud_air
, 0.1f
);
39 s
->aud_slide
= audio_channel_fadeout( s
->aud_slide
, 0.1f
);
44 * Collision detection routines
50 * Does collision detection on a sphere vs world, and applies some smoothing
51 * filters to the manifold afterwards
53 VG_STATIC
int skate_collide_smooth( player_instance
*player
,
54 m4x3f mtx
, rb_sphere
*sphere
,
57 world_instance
*world
= get_active_world();
60 len
= rb_sphere__scene( mtx
, sphere
, NULL
, &world
->rb_geo
.inf
.scene
, man
);
62 for( int i
=0; i
<len
; i
++ )
64 man
[i
].rba
= &player
->rb
;
68 rb_manifold_filter_coplanar( man
, len
, 0.03f
);
72 rb_manifold_filter_backface( man
, len
);
73 rb_manifold_filter_joint_edges( man
, len
, 0.03f
);
74 rb_manifold_filter_pairs( man
, len
, 0.03f
);
76 int new_len
= rb_manifold_apply_filtered( man
, len
);
90 VG_STATIC
int skate_grind_scansq( player_instance
*player
,
91 v3f pos
, v3f dir
, float r
,
92 struct grind_info
*inf
)
94 world_instance
*world
= get_active_world();
97 v3_copy( dir
, plane
);
98 v3_normalize( plane
);
99 plane
[3] = v3_dot( plane
, pos
);
102 v3_add( pos
, (v3f
){ r
, r
, r
}, box
[1] );
103 v3_sub( pos
, (v3f
){ r
, r
, r
}, box
[0] );
106 bh_iter_init( 0, &it
);
117 int sample_count
= 0;
123 v3_cross( plane
, player
->basis
[1], support_axis
);
124 v3_normalize( support_axis
);
126 while( bh_next( world
->geo_bh
, &it
, box
, &idx
) ){
127 u32
*ptri
= &world
->scene_geo
.arrindices
[ idx
*3 ];
130 struct world_surface
*surf
= world_tri_index_surface(world
,ptri
[0]);
131 if( !(surf
->info
.flags
& k_material_flag_grindable
) )
134 for( int j
=0; j
<3; j
++ )
135 v3_copy( world
->scene_geo
.arrvertices
[ptri
[j
]].co
, tri
[j
] );
137 for( int j
=0; j
<3; j
++ ){
141 struct grind_sample
*sample
= &samples
[ sample_count
];
144 if( plane_segment( plane
, tri
[i0
], tri
[i1
], co
) ){
146 v3_sub( co
, pos
, d
);
147 if( v3_length2( d
) > r
*r
)
151 v3_sub( tri
[1], tri
[0], va
);
152 v3_sub( tri
[2], tri
[0], vb
);
153 v3_cross( va
, vb
, normal
);
155 sample
->normal
[0] = v3_dot( support_axis
, normal
);
156 sample
->normal
[1] = v3_dot( player
->basis
[1], normal
);
157 sample
->co
[0] = v3_dot( support_axis
, d
);
158 sample
->co
[1] = v3_dot( player
->basis
[1], d
);
160 v3_copy( normal
, sample
->normal3
); /* normalize later
161 if we want to us it */
163 v3_muls( tri
[0], 1.0f
/3.0f
, sample
->centroid
);
164 v3_muladds( sample
->centroid
, tri
[1], 1.0f
/3.0f
, sample
->centroid
);
165 v3_muladds( sample
->centroid
, tri
[2], 1.0f
/3.0f
, sample
->centroid
);
167 v2_normalize( sample
->normal
);
170 if( sample_count
== vg_list_size( samples
) )
171 goto too_many_samples
;
178 if( sample_count
< 2 )
186 v2_fill( min_co
, INFINITY
);
187 v2_fill( max_co
, -INFINITY
);
189 v3_zero( average_direction
);
190 v3_zero( average_normal
);
192 int passed_samples
= 0;
194 for( int i
=0; i
<sample_count
-1; i
++ ){
195 struct grind_sample
*si
, *sj
;
199 for( int j
=i
+1; j
<sample_count
; j
++ ){
205 /* non overlapping */
206 if( v2_dist2( si
->co
, sj
->co
) >= (0.01f
*0.01f
) )
209 /* not sharp angle */
210 if( v2_dot( si
->normal
, sj
->normal
) >= 0.7f
)
215 v3_sub( sj
->centroid
, si
->centroid
, v0
);
216 if( v3_dot( v0
, si
->normal3
) >= 0.0f
||
217 v3_dot( v0
, sj
->normal3
) <= 0.0f
)
220 v2_minv( sj
->co
, min_co
, min_co
);
221 v2_maxv( sj
->co
, max_co
, max_co
);
224 v3_copy( si
->normal3
, n0
);
225 v3_copy( sj
->normal3
, n1
);
226 v3_cross( n0
, n1
, dir
);
229 /* make sure the directions all face a common hemisphere */
230 v3_muls( dir
, vg_signf(v3_dot(dir
,plane
)), dir
);
231 v3_add( average_direction
, dir
, average_direction
);
233 float yi
= v3_dot( player
->basis
[1], si
->normal3
),
234 yj
= v3_dot( player
->basis
[1], sj
->normal3
);
237 v3_add( si
->normal3
, average_normal
, average_normal
);
239 v3_add( sj
->normal3
, average_normal
, average_normal
);
245 if( !passed_samples
)
248 if( (v3_length2( average_direction
) <= 0.001f
) ||
249 (v3_length2( average_normal
) <= 0.001f
) )
252 float div
= 1.0f
/(float)passed_samples
;
253 v3_normalize( average_direction
);
254 v3_normalize( average_normal
);
257 v2_add( min_co
, max_co
, average_coord
);
258 v2_muls( average_coord
, 0.5f
, average_coord
);
260 v3_muls( support_axis
, average_coord
[0], inf
->co
);
261 inf
->co
[1] += average_coord
[1];
262 v3_add( pos
, inf
->co
, inf
->co
);
263 v3_copy( average_normal
, inf
->n
);
264 v3_copy( average_direction
, inf
->dir
);
266 vg_line_pt3( inf
->co
, 0.02f
, VG__GREEN
);
267 vg_line_arrow( inf
->co
, average_direction
, 0.3f
, VG__GREEN
);
268 vg_line_arrow( inf
->co
, inf
->n
, 0.2f
, VG__CYAN
);
270 return passed_samples
;
273 VG_STATIC
void reset_jump_info( jump_info
*inf
)
276 inf
->land_dist
= 0.0f
;
278 inf
->type
= k_prediction_unset
;
279 v3_zero( inf
->apex
);
282 VG_STATIC
int create_jumps_to_hit_target( player_instance
*player
,
284 v3f target
, float max_angle_delta
,
287 struct player_skate
*s
= &player
->_skate
;
289 /* calculate the exact 2 solutions to jump onto that grind spot */
292 v3_sub( target
, player
->rb
.co
, v0
);
293 m3x3_mulv( player
->invbasis
, v0
, v0
);
301 m3x3_mulv( player
->invbasis
, player
->rb
.v
, v_local
);
303 v2f d
= { v3_dot( ax
, v0
), v0
[1] },
304 v
= { v3_dot( ax
, v_local
), v_local
[1] };
306 float a
= atan2f( v
[1], v
[0] ),
308 root
= m
*m
*m
*m
- gravity
*(gravity
*d
[0]*d
[0] + 2.0f
*d
[1]*m
*m
);
313 root
= sqrtf( root
);
314 float a0
= atanf( (m
*m
+ root
) / (gravity
* d
[0]) ),
315 a1
= atanf( (m
*m
- root
) / (gravity
* d
[0]) );
317 if( fabsf(a0
-a
) < max_angle_delta
){
318 jump_info
*inf
= &jumps
[ valid_count
++ ];
319 reset_jump_info( inf
);
321 v3_muls( ax
, cosf( a0
) * m
, inf
->v
);
322 inf
->v
[1] += sinf( a0
) * m
;
323 m3x3_mulv( player
->basis
, inf
->v
, inf
->v
);
324 inf
->land_dist
= d
[0] / (cosf(a0
)*m
);
325 inf
->gravity
= gravity
;
327 v3_copy( target
, inf
->log
[inf
->log_length
++] );
330 if( fabsf(a1
-a
) < max_angle_delta
){
331 jump_info
*inf
= &jumps
[ valid_count
++ ];
332 reset_jump_info( inf
);
334 v3_muls( ax
, cosf( a1
) * m
, inf
->v
);
335 inf
->v
[1] += sinf( a1
) * m
;
336 m3x3_mulv( player
->basis
, inf
->v
, inf
->v
);
337 inf
->land_dist
= d
[0] / (cosf(a1
)*m
);
338 inf
->gravity
= gravity
;
340 v3_copy( target
, inf
->log
[inf
->log_length
++] );
348 void player__approximate_best_trajectory( player_instance
*player
)
350 world_instance
*world0
= get_active_world();
352 struct player_skate
*s
= &player
->_skate
;
353 float k_trace_delta
= k_rb_delta
* 10.0f
;
355 s
->state
.air_start
= vg
.time
;
356 v3_copy( player
->rb
.v
, s
->state
.air_init_v
);
357 v3_copy( player
->rb
.co
, s
->state
.air_init_co
);
359 s
->possible_jump_count
= 0;
362 v3_cross( player
->rb
.v
, player
->rb
.to_world
[1], axis
);
363 v3_normalize( axis
);
365 /* at high slopes, Y component is low */
366 float upness
= v3_dot( player
->rb
.to_world
[1], player
->basis
[1] ),
367 angle_begin
= -(1.0f
-fabsf( upness
)),
370 struct grind_info grind
;
371 int grind_located
= 0;
372 float grind_located_gravity
= k_gravity
;
375 v3f launch_v_bounds
[2];
377 for( int i
=0; i
<2; i
++ ){
378 v3_copy( player
->rb
.v
, launch_v_bounds
[i
] );
379 float ang
= (float[]){ angle_begin
, angle_end
}[ i
];
383 q_axis_angle( qbias
, axis
, ang
);
384 q_mulv( qbias
, launch_v_bounds
[i
], launch_v_bounds
[i
] );
387 for( int m
=0;m
<=30; m
++ ){
388 jump_info
*inf
= &s
->possible_jumps
[ s
->possible_jump_count
++ ];
389 reset_jump_info( inf
);
391 v3f launch_co
, launch_v
, co0
, co1
;
392 v3_copy( player
->rb
.co
, launch_co
);
393 v3_copy( player
->rb
.v
, launch_v
);
394 v3_copy( launch_co
, co0
);
395 world_instance
*trace_world
= world0
;
397 float vt
= (float)m
* (1.0f
/30.0f
),
398 ang
= vg_lerpf( angle_begin
, angle_end
, vt
) * 0.15f
;
401 q_axis_angle( qbias
, axis
, ang
);
402 q_mulv( qbias
, launch_v
, launch_v
);
404 float yaw_sketch
= 1.0f
-fabsf(upness
);
406 float yaw_bias
= ((float)(m
%3) - 1.0f
) * 0.08f
* yaw_sketch
;
407 q_axis_angle( qbias
, player
->rb
.to_world
[1], yaw_bias
);
408 q_mulv( qbias
, launch_v
, launch_v
);
410 float gravity_bias
= vg_lerpf( 0.85f
, 1.4f
, vt
),
411 gravity
= k_gravity
* gravity_bias
;
412 inf
->gravity
= gravity
;
413 v3_copy( launch_v
, inf
->v
);
416 m3x3_copy( player
->basis
, basis
);
418 for( int i
=1; i
<=50; i
++ ){
419 float t
= (float)i
* k_trace_delta
;
421 v3_muls( launch_v
, t
, co1
);
422 v3_muladds( co1
, basis
[1], -0.5f
* gravity
* t
*t
, co1
);
423 v3_add( launch_co
, co1
, co1
);
425 float launch_vy
= v3_dot( launch_v
,basis
[1] );
427 int search_for_grind
= 1;
428 if( grind_located
) search_for_grind
= 0;
429 if( launch_vy
- gravity
*t
> 0.0f
) search_for_grind
= 0;
433 v3f closest
={0.0f
,0.0f
,0.0f
};
434 if( search_for_grind
){
435 if( bh_closest_point(trace_world
->geo_bh
,co1
,closest
,1.0f
) != -1 ){
436 float min_dist
= 0.75f
;
437 min_dist
*= min_dist
;
439 if( v3_dist2( closest
, launch_co
) < min_dist
)
440 search_for_grind
= 0;
444 for( int j
=0; j
<2; j
++ ){
445 v3_muls( launch_v_bounds
[j
], t
, bound
[j
] );
446 v3_muladds( bound
[j
], basis
[1], -0.5f
*gravity
*t
*t
, bound
[j
] );
447 v3_add( launch_co
, bound
[j
], bound
[j
] );
450 float limh
= vg_minf( 2.0f
, t
),
451 minh
= vg_minf( bound
[0][1], bound
[1][1] )-limh
,
452 maxh
= vg_maxf( bound
[0][1], bound
[1][1] )+limh
;
454 if( (closest
[1] < minh
) || (closest
[1] > maxh
) ){
455 search_for_grind
= 0;
459 search_for_grind
= 0;
462 if( search_for_grind
){
464 v3_copy( launch_v
, ve
);
465 v3_muladds( ve
, basis
[1], -gravity
* t
, ve
);
467 if( skate_grind_scansq( player
, closest
, ve
, 0.5f
, &grind
) ){
468 /* check alignment */
469 v2f v0
= { v3_dot( ve
, basis
[0] ),
470 v3_dot( ve
, basis
[2] ) },
471 v1
= { v3_dot( grind
.dir
, basis
[0] ),
472 v3_dot( grind
.dir
, basis
[2] ) };
477 float a
= v2_dot( v0
, v1
);
479 float a_min
= cosf( VG_PIf
* 0.185f
);
480 if( s
->grind_cooldown
)
481 a_min
= cosf( VG_PIf
* 0.05f
);
484 if( (fabsf(v3_dot( ve
, grind
.dir
))>=k_grind_axel_min_vel
) &&
486 (fabsf(grind
.dir
[1]) < 0.70710678118654752f
))
489 grind_located_gravity
= inf
->gravity
;
494 if( trace_world
->rendering_gate
){
495 ent_gate
*gate
= trace_world
->rendering_gate
;
496 if( gate_intersect( gate
, co1
, co0
) ){
497 m4x3_mulv( gate
->transport
, co0
, co0
);
498 m4x3_mulv( gate
->transport
, co1
, co1
);
499 m3x3_mulv( gate
->transport
, launch_v
, launch_v
);
500 m4x3_mulv( gate
->transport
, launch_co
, launch_co
);
501 m3x3_mul( gate
->transport
, basis
, basis
);
503 if( gate
->type
== k_gate_type_nonlocel
){
504 trace_world
= &world_global
.worlds
[ gate
->target
];
512 float scan_radius
= k_board_radius
;
513 scan_radius
*= vg_clampf( t
, 0.02f
, 1.0f
);
515 int idx
= spherecast_world(trace_world
, co0
, co1
, scan_radius
, &t1
, n
);
518 v3_lerp( co0
, co1
, t1
, co
);
519 v3_copy( co
, inf
->log
[ inf
->log_length
++ ] );
521 v3_copy( n
, inf
->n
);
522 u32
*tri
= &trace_world
->scene_geo
.arrindices
[ idx
*3 ];
523 struct world_surface
*surf
=
524 world_tri_index_surface( trace_world
, tri
[0] );
526 inf
->type
= k_prediction_land
;
529 v3_copy( launch_v
, ve
);
530 v3_muladds( ve
, player
->basis
[1], -gravity
* t
, ve
);
532 inf
->score
= -v3_dot( ve
, inf
->n
);
533 inf
->land_dist
= t
+ k_trace_delta
* t1
;
535 /* Bias prediction towords ramps */
536 if( !(surf
->info
.flags
& k_material_flag_skate_target
) )
539 if( surf
->info
.flags
& k_material_flag_boundary
)
540 s
->possible_jump_count
--;
546 v3_copy( co1
, inf
->log
[ inf
->log_length
++ ] );
551 if( inf
->type
== k_prediction_unset
)
552 s
->possible_jump_count
--;
556 jump_info grind_jumps
[2];
559 create_jumps_to_hit_target( player
, grind_jumps
, grind
.co
,
560 0.175f
*VG_PIf
, grind_located_gravity
);
562 /* knock out original landing points in the 1m area */
563 for( u32 j
=0; j
<s
->possible_jump_count
; j
++ ){
564 jump_info
*jump
= &s
->possible_jumps
[ j
];
565 float dist
= v3_dist2( jump
->log
[jump
->log_length
-1], grind
.co
);
566 float descale
= 1.0f
-vg_minf(1.0f
,dist
);
567 jump
->score
+= descale
*3.0f
;
570 for( int i
=0; i
<valid_count
; i
++ ){
571 jump_info
*jump
= &grind_jumps
[i
];
572 jump
->type
= k_prediction_grind
;
574 v3f launch_v
, launch_co
, co0
, co1
;
576 v3_copy( jump
->v
, launch_v
);
577 v3_copy( player
->rb
.co
, launch_co
);
580 m3x3_copy( player
->basis
, basis
);
582 float t
= 0.05f
* jump
->land_dist
;
583 v3_muls( launch_v
, t
, co0
);
584 v3_muladds( co0
, basis
[1], -0.5f
* jump
->gravity
* t
*t
, co0
);
585 v3_add( launch_co
, co0
, co0
);
587 /* rough scan to make sure we dont collide with anything */
588 for( int j
=1; j
<=16; j
++ ){
589 t
= (float)j
*(1.0f
/16.0f
);
592 t
*= jump
->land_dist
;
594 v3_muls( launch_v
, t
, co1
);
595 v3_muladds( co1
, basis
[1], -0.5f
* jump
->gravity
* t
*t
, co1
);
596 v3_add( launch_co
, co1
, co1
);
601 int idx
= spherecast_world( world0
, co0
,co1
,
602 k_board_radius
*0.1f
, &t1
, n
);
604 goto invalidated_grind
;
610 v3_copy( grind
.n
, jump
->n
);
612 /* determine score */
614 v3_copy( jump
->v
, ve
);
615 v3_muladds( ve
, player
->basis
[1], -jump
->gravity
*jump
->land_dist
, ve
);
616 jump
->score
= -v3_dot( ve
, grind
.n
) * 0.9f
;
618 s
->possible_jumps
[ s
->possible_jump_count
++ ] = *jump
;
626 float score_min
= INFINITY
,
627 score_max
= -INFINITY
;
629 jump_info
*best
= NULL
;
631 for( int i
=0; i
<s
->possible_jump_count
; i
++ ){
632 jump_info
*jump
= &s
->possible_jumps
[i
];
634 if( jump
->score
< score_min
)
637 score_min
= vg_minf( score_min
, jump
->score
);
638 score_max
= vg_maxf( score_max
, jump
->score
);
641 for( int i
=0; i
<s
->possible_jump_count
; i
++ ){
642 jump_info
*jump
= &s
->possible_jumps
[i
];
643 float s
= jump
->score
;
646 s
/= (score_max
-score_min
);
650 jump
->colour
= s
* 255.0f
;
654 else if( jump
->type
== k_prediction_land
)
657 jump
->colour
|= 0xff000000;
661 v3_copy( best
->n
, s
->land_normal
);
662 v3_copy( best
->v
, player
->rb
.v
);
663 s
->land_dist
= best
->land_dist
;
665 s
->state
.gravity_bias
= best
->gravity
;
667 if( best
->type
== k_prediction_grind
){
668 s
->state
.activity
= k_skate_activity_air_to_grind
;
672 joystick_state( k_srjoystick_steer
, steer
);
673 v2_normalize_clamp( steer
);
675 if( (fabsf(steer
[1]) > 0.5f
) && (s
->land_dist
>= 1.5f
) ){
676 s
->state
.flip_rate
= (1.0f
/s
->land_dist
) * vg_signf(steer
[1]) *
678 s
->state
.flip_time
= 0.0f
;
679 v3_copy( player
->rb
.to_world
[0], s
->state
.flip_axis
);
682 s
->state
.flip_rate
= 0.0f
;
683 v3_zero( s
->state
.flip_axis
);
687 v3_copy( player
->basis
[1], s
->land_normal
);
693 * Varius physics models
694 * ------------------------------------------------
698 * Air control, no real physics
700 VG_STATIC
void skate_apply_air_model( player_instance
*player
)
702 struct player_skate
*s
= &player
->_skate
;
704 if( s
->state
.activity_prev
> k_skate_activity_air_to_grind
)
705 player__approximate_best_trajectory( player
);
707 float angle
= v3_dot( player
->rb
.to_world
[1], s
->land_normal
);
708 angle
= vg_clampf( angle
, -1.0f
, 1.0f
);
710 v3_cross( player
->rb
.to_world
[1], s
->land_normal
, axis
);
713 q_axis_angle( correction
, axis
,
714 acosf(angle
)*2.0f
*VG_TIMESTEP_FIXED
);
715 q_mul( correction
, player
->rb
.q
, player
->rb
.q
);
718 VG_STATIC
int player_skate_trick_input( player_instance
*player
);
719 VG_STATIC
void skate_apply_trick_model( player_instance
*player
)
721 struct player_skate
*s
= &player
->_skate
;
724 v3f strength
= { 3.7f
, 3.6f
, 8.0f
};
726 v3_muls( s
->board_trick_residualv
, -4.0f
, Fd
);
727 v3_muls( s
->board_trick_residuald
, -10.0f
, Fs
);
729 v3_mul( strength
, F
, F
);
731 v3_muladds( s
->board_trick_residualv
, F
, k_rb_delta
,
732 s
->board_trick_residualv
);
733 v3_muladds( s
->board_trick_residuald
, s
->board_trick_residualv
,
734 k_rb_delta
, s
->board_trick_residuald
);
736 if( s
->state
.activity
<= k_skate_activity_air_to_grind
){
737 if( v3_length2( s
->state
.trick_vel
) < 0.0001f
)
740 int carry_on
= player_skate_trick_input( player
);
742 /* we assume velocities share a common divisor, in which case the
743 * interval is the minimum value (if not zero) */
745 float min_rate
= 99999.0f
;
747 for( int i
=0; i
<3; i
++ ){
748 float v
= s
->state
.trick_vel
[i
];
749 if( (v
> 0.0f
) && (v
< min_rate
) )
753 float interval
= 1.0f
/ min_rate
,
754 current
= floorf( s
->state
.trick_time
/ interval
),
755 next_end
= (current
+1.0f
) * interval
;
758 /* integrate trick velocities */
759 v3_muladds( s
->state
.trick_euler
, s
->state
.trick_vel
, k_rb_delta
,
760 s
->state
.trick_euler
);
762 if( !carry_on
&& (s
->state
.trick_time
+ k_rb_delta
>= next_end
) ){
763 s
->state
.trick_time
= 0.0f
;
764 s
->state
.trick_euler
[0] = roundf( s
->state
.trick_euler
[0] );
765 s
->state
.trick_euler
[1] = roundf( s
->state
.trick_euler
[1] );
766 s
->state
.trick_euler
[2] = roundf( s
->state
.trick_euler
[2] );
767 v3_copy( s
->state
.trick_vel
, s
->board_trick_residualv
);
768 v3_zero( s
->state
.trick_vel
);
771 s
->state
.trick_time
+= k_rb_delta
;
774 if( (v3_length2(s
->state
.trick_vel
) >= 0.0001f
) &&
775 s
->state
.trick_time
> 0.2f
)
777 player__skate_kill_audio( player
);
778 player__dead_transition( player
);
781 s
->state
.trick_euler
[0] = roundf( s
->state
.trick_euler
[0] );
782 s
->state
.trick_euler
[1] = roundf( s
->state
.trick_euler
[1] );
783 s
->state
.trick_euler
[2] = roundf( s
->state
.trick_euler
[2] );
784 s
->state
.trick_time
= 0.0f
;
785 v3_zero( s
->state
.trick_vel
);
789 VG_STATIC
void skate_apply_grab_model( player_instance
*player
)
791 struct player_skate
*s
= &player
->_skate
;
793 float grabt
= axis_state( k_sraxis_grab
);
796 v2_muladds( s
->state
.grab_mouse_delta
, vg
.mouse_delta
, 0.02f
,
797 s
->state
.grab_mouse_delta
);
799 v2_normalize_clamp( s
->state
.grab_mouse_delta
);
802 v2_zero( s
->state
.grab_mouse_delta
);
804 s
->state
.grabbing
= vg_lerpf( s
->state
.grabbing
, grabt
, 8.4f
*k_rb_delta
);
807 VG_STATIC
void skate_apply_steering_model( player_instance
*player
)
809 struct player_skate
*s
= &player
->_skate
;
812 joystick_state( k_srjoystick_steer
, jsteer
);
815 float steer
= jsteer
[0],
816 grab
= axis_state( k_sraxis_grab
);
818 steer
= vg_signf( steer
) * steer
*steer
* k_steer_ground
;
821 v3_muls( player
->rb
.to_world
[1], -vg_signf( steer
), steer_axis
);
826 if( s
->state
.activity
<= k_skate_activity_air_to_grind
){
827 rate
= 6.0f
* fabsf(steer
);
831 /* rotate slower when grabbing on ground */
832 steer
*= (1.0f
-(s
->state
.jump_charge
+grab
)*0.4f
);
834 if( s
->state
.activity
== k_skate_activity_grind_5050
){
839 else if( s
->state
.activity
>= k_skate_activity_grind_any
){
840 rate
*= fabsf(steer
);
842 float a
= 0.8f
* -steer
* k_rb_delta
;
845 q_axis_angle( q
, player
->rb
.to_world
[1], a
);
846 q_mulv( q
, s
->grind_vec
, s
->grind_vec
);
848 v3_normalize( s
->grind_vec
);
851 else if( s
->state
.manual_direction
){
857 float current
= v3_dot( player
->rb
.to_world
[1], player
->rb
.w
),
858 addspeed
= (steer
* -top
) - current
,
859 maxaccel
= rate
* k_rb_delta
,
860 accel
= vg_clampf( addspeed
, -maxaccel
, maxaccel
);
862 v3_muladds( player
->rb
.w
, player
->rb
.to_world
[1], accel
, player
->rb
.w
);
866 * Computes friction and surface interface model
868 VG_STATIC
void skate_apply_friction_model( player_instance
*player
)
870 struct player_skate
*s
= &player
->_skate
;
873 * Computing localized friction forces for controlling the character
874 * Friction across X is significantly more than Z
878 m3x3_mulv( player
->rb
.to_local
, player
->rb
.v
, vel
);
881 if( fabsf(vel
[2]) > 0.01f
)
882 slip
= fabsf(-vel
[0] / vel
[2]) * vg_signf(vel
[0]);
884 if( fabsf( slip
) > 1.2f
)
885 slip
= vg_signf( slip
) * 1.2f
;
887 s
->state
.slip
= slip
;
888 s
->state
.reverse
= -vg_signf(vel
[2]);
890 vel
[0] += vg_cfrictf( vel
[0], k_friction_lat
* k_rb_delta
);
891 vel
[2] += vg_cfrictf( vel
[2], k_friction_resistance
* k_rb_delta
);
893 /* Pushing additive force */
895 if( !button_press( k_srbind_jump
) ){
896 if( button_press( k_srbind_push
) || (vg
.time
-s
->state
.start_push
<0.75) )
898 if( (vg
.time
- s
->state
.cur_push
) > 0.25 )
899 s
->state
.start_push
= vg
.time
;
901 s
->state
.cur_push
= vg
.time
;
903 double push_time
= vg
.time
- s
->state
.start_push
;
905 float cycle_time
= push_time
*k_push_cycle_rate
,
906 accel
= k_push_accel
* (sinf(cycle_time
)*0.5f
+0.5f
),
907 amt
= accel
* VG_TIMESTEP_FIXED
,
908 current
= v3_length( vel
),
909 new_vel
= vg_minf( current
+ amt
, k_max_push_speed
),
910 delta
= new_vel
- vg_minf( current
, k_max_push_speed
);
912 vel
[2] += delta
* -s
->state
.reverse
;
916 /* Send back to velocity */
917 m3x3_mulv( player
->rb
.to_world
, vel
, player
->rb
.v
);
920 VG_STATIC
void skate_apply_jump_model( player_instance
*player
)
922 struct player_skate
*s
= &player
->_skate
;
923 int charging_jump_prev
= s
->state
.charging_jump
;
924 s
->state
.charging_jump
= button_press( k_srbind_jump
);
926 /* Cannot charge this in air */
927 if( s
->state
.activity
<= k_skate_activity_air_to_grind
){
928 s
->state
.charging_jump
= 0;
932 if( s
->state
.charging_jump
){
933 s
->state
.jump_charge
+= k_rb_delta
* k_jump_charge_speed
;
935 if( !charging_jump_prev
)
936 s
->state
.jump_dir
= s
->state
.reverse
>0.0f
? 1: 0;
939 s
->state
.jump_charge
-= k_jump_charge_speed
* k_rb_delta
;
942 s
->state
.jump_charge
= vg_clampf( s
->state
.jump_charge
, 0.0f
, 1.0f
);
944 /* player let go after charging past 0.2: trigger jump */
945 if( (!s
->state
.charging_jump
) && (s
->state
.jump_charge
> 0.2f
) ){
948 /* Launch more up if alignment is up else improve velocity */
949 float aup
= v3_dot( player
->basis
[1], player
->rb
.to_world
[1] ),
951 dir
= mod
+ fabsf(aup
)*(1.0f
-mod
);
953 if( s
->state
.activity
== k_skate_activity_ground
){
954 v3_copy( player
->rb
.v
, jumpdir
);
955 v3_normalize( jumpdir
);
956 v3_muls( jumpdir
, 1.0f
-dir
, jumpdir
);
957 v3_muladds( jumpdir
, player
->rb
.to_world
[1], dir
, jumpdir
);
958 v3_normalize( jumpdir
);
960 v3_copy( s
->state
.up_dir
, jumpdir
);
961 s
->grind_cooldown
= 30;
962 s
->state
.activity
= k_skate_activity_ground
;
965 joystick_state( k_srjoystick_steer
, steer
);
967 float tilt
= steer
[0] * 0.3f
;
968 tilt
*= vg_signf(v3_dot( player
->rb
.v
, s
->grind_dir
));
971 q_axis_angle( qtilt
, s
->grind_dir
, tilt
);
972 q_mulv( qtilt
, jumpdir
, jumpdir
);
974 s
->surface_cooldown
= 10;
976 float force
= k_jump_force
*s
->state
.jump_charge
;
977 v3_muladds( player
->rb
.v
, jumpdir
, force
, player
->rb
.v
);
978 s
->state
.jump_charge
= 0.0f
;
979 s
->state
.jump_time
= vg
.time
;
982 audio_oneshot_3d( &audio_jumps
[rand()%2], player
->rb
.co
, 40.0f
, 1.0f
);
987 VG_STATIC
void skate_apply_pump_model( player_instance
*player
)
989 struct player_skate
*s
= &player
->_skate
;
991 if( s
->state
.activity
!= k_skate_activity_ground
){
992 v3_zero( s
->state
.throw_v
);
996 /* Throw / collect routine
998 if( axis_state( k_sraxis_grab
) > 0.5f
){
999 if( s
->state
.activity
== k_skate_activity_ground
){
1001 v3_muls( player
->rb
.to_world
[1], k_mmthrow_scale
, s
->state
.throw_v
);
1006 float doty
= v3_dot( player
->rb
.to_world
[1], s
->state
.throw_v
);
1009 v3_muladds( s
->state
.throw_v
, player
->rb
.to_world
[1], -doty
, Fl
);
1011 if( s
->state
.activity
== k_skate_activity_ground
){
1012 if( v3_length2(player
->rb
.v
)<(20.0f
*20.0f
) )
1013 v3_muladds( player
->rb
.v
, Fl
, k_mmcollect_lat
, player
->rb
.v
);
1014 v3_muladds( s
->state
.throw_v
, Fl
, -k_mmcollect_lat
, s
->state
.throw_v
);
1017 v3_muls( player
->rb
.to_world
[1], -doty
, Fv
);
1018 v3_muladds( player
->rb
.v
, Fv
, k_mmcollect_vert
, player
->rb
.v
);
1019 v3_muladds( s
->state
.throw_v
, Fv
, k_mmcollect_vert
, s
->state
.throw_v
);
1023 if( v3_length2( s
->state
.throw_v
) > 0.0001f
){
1025 v3_copy( s
->state
.throw_v
, dir
);
1026 v3_normalize( dir
);
1028 float max
= v3_dot( dir
, s
->state
.throw_v
),
1029 amt
= vg_minf( k_mmdecay
* k_rb_delta
, max
);
1030 v3_muladds( s
->state
.throw_v
, dir
, -amt
, s
->state
.throw_v
);
1034 VG_STATIC
void skate_apply_cog_model( player_instance
*player
)
1036 struct player_skate
*s
= &player
->_skate
;
1038 v3f ideal_cog
, ideal_diff
, ideal_dir
;
1039 v3_copy( s
->state
.up_dir
, ideal_dir
);
1040 v3_normalize( ideal_dir
);
1042 float grab
= axis_state( k_sraxis_grab
);
1043 v3_muladds( player
->rb
.co
, ideal_dir
, 1.0f
-grab
, ideal_cog
);
1044 v3_sub( ideal_cog
, s
->state
.cog
, ideal_diff
);
1046 /* Apply velocities */
1048 v3_sub( player
->rb
.v
, s
->state
.cog_v
, rv
);
1051 v3_muls( ideal_diff
, -k_cog_spring
* k_rb_rate
, F
);
1052 v3_muladds( F
, rv
, -k_cog_damp
* k_rb_rate
, F
);
1054 float ra
= k_cog_mass_ratio
,
1055 rb
= 1.0f
-k_cog_mass_ratio
;
1057 /* Apply forces & intergrate */
1058 v3_muladds( s
->state
.cog_v
, F
, -rb
, s
->state
.cog_v
);
1059 v3_muladds( s
->state
.cog_v
, player
->basis
[1], -9.8f
* k_rb_delta
,
1062 v3_muladds( s
->state
.cog
, s
->state
.cog_v
, k_rb_delta
, s
->state
.cog
);
1066 VG_STATIC
void skate_integrate( player_instance
*player
)
1068 struct player_skate
*s
= &player
->_skate
;
1070 float decay_rate_x
= 1.0f
- (k_rb_delta
* 3.0f
),
1071 decay_rate_z
= decay_rate_x
,
1072 decay_rate_y
= 1.0f
;
1074 if( s
->state
.activity
>= k_skate_activity_grind_any
){
1076 decay_rate
= 1.0f
-vg_lerpf( 3.0f
, 20.0f
, s
->grind_strength
) * k_rb_delta
;
1077 decay_rate_y
= decay_rate
;
1079 decay_rate_x
= 1.0f
-(16.0f
*k_rb_delta
);
1080 decay_rate_y
= 1.0f
-(10.0f
*k_rb_delta
);
1081 decay_rate_z
= 1.0f
-(40.0f
*k_rb_delta
);
1084 float wx
= v3_dot( player
->rb
.w
, player
->rb
.to_world
[0] ) * decay_rate_x
,
1085 wy
= v3_dot( player
->rb
.w
, player
->rb
.to_world
[1] ) * decay_rate_y
,
1086 wz
= v3_dot( player
->rb
.w
, player
->rb
.to_world
[2] ) * decay_rate_z
;
1088 v3_muls( player
->rb
.to_world
[0], wx
, player
->rb
.w
);
1089 v3_muladds( player
->rb
.w
, player
->rb
.to_world
[1], wy
, player
->rb
.w
);
1090 v3_muladds( player
->rb
.w
, player
->rb
.to_world
[2], wz
, player
->rb
.w
);
1092 s
->state
.flip_time
+= s
->state
.flip_rate
* k_rb_delta
;
1093 rb_update_transform( &player
->rb
);
1100 VG_STATIC
void skate_copy_holdout( player_instance
*player
)
1102 struct player_skate
*s
= &player
->_skate
;
1103 struct player_avatar
*av
= player
->playeravatar
;
1104 struct skeleton
*sk
= &av
->sk
;
1105 skeleton_copy_pose( sk
, s
->holdout
, player
->holdout_pose
);
1108 VG_STATIC
int player_skate_trick_input( player_instance
*player
)
1110 return (button_press( k_srbind_trick0
) ) |
1111 (button_press( k_srbind_trick1
) << 1) |
1112 (button_press( k_srbind_trick2
) << 1) |
1113 (button_press( k_srbind_trick2
) );
1116 VG_STATIC
void player__skate_pre_update( player_instance
*player
)
1118 struct player_skate
*s
= &player
->_skate
;
1120 if( button_down( k_srbind_use
) ){
1121 player
->subsystem
= k_player_subsystem_walk
;
1124 v3_copy( player
->cam
.angles
, angles
);
1127 skate_copy_holdout( player
);
1128 player
->holdout_time
= 0.34f
;
1129 player__skate_kill_audio( player
);
1130 player__walk_transition( player
, angles
);
1135 if( (s
->state
.activity
<= k_skate_activity_air_to_grind
) &&
1136 (trick_id
= player_skate_trick_input( player
)) )
1138 if( (vg
.time
- s
->state
.jump_time
) < 0.1f
){
1139 v3_zero( s
->state
.trick_vel
);
1140 s
->state
.trick_time
= 0.0f
;
1142 if( trick_id
== 1 ){
1143 s
->state
.trick_vel
[0] = 3.0f
;
1145 else if( trick_id
== 2 ){
1146 s
->state
.trick_vel
[2] = 3.0f
;
1148 else if( trick_id
== 3 ){
1149 s
->state
.trick_vel
[0] = 2.0f
;
1150 s
->state
.trick_vel
[2] = 2.0f
;
1156 VG_STATIC
void player__skate_post_update( player_instance
*player
)
1158 struct player_skate
*s
= &player
->_skate
;
1160 for( int i
=0; i
<s
->possible_jump_count
; i
++ ){
1161 jump_info
*jump
= &s
->possible_jumps
[i
];
1163 if( jump
->log_length
== 0 ){
1164 vg_fatal_error( "assert: jump->log_length == 0\n" );
1167 for( int j
=0; j
<jump
->log_length
- 1; j
++ ){
1168 float brightness
= jump
->score
*jump
->score
*jump
->score
;
1170 v3_lerp( jump
->log
[j
], jump
->log
[j
+1], brightness
, p1
);
1171 vg_line( jump
->log
[j
], p1
, jump
->colour
);
1174 vg_line_cross( jump
->log
[jump
->log_length
-1], jump
->colour
, 0.25f
);
1177 v3_add( jump
->log
[jump
->log_length
-1], jump
->n
, p1
);
1178 vg_line( jump
->log
[jump
->log_length
-1], p1
, 0xffffffff );
1180 vg_line_pt3( jump
->apex
, 0.02f
, 0xffffffff );
1185 float air
= s
->state
.activity
<= k_skate_activity_air_to_grind
? 1.0f
: 0.0f
,
1186 speed
= v3_length( player
->rb
.v
),
1187 attn
= vg_minf( 1.0f
, speed
*0.1f
),
1188 slide
= vg_clampf( fabsf(s
->state
.slip
), 0.0f
, 1.0f
);
1190 if( s
->state
.activity
>= k_skate_activity_grind_any
){
1194 static float menu_gate
= 1.0f
;
1195 menu_gate
= vg_lerpf( menu_gate
, 1-cl_menu
, vg
.time_frame_delta
*4.0f
);
1198 vol_main
= sqrtf( (1.0f
-air
)*attn
*(1.0f
-slide
) * 0.4f
) * menu_gate
,
1199 vol_air
= sqrtf( air
*attn
* 0.5f
) * menu_gate
,
1200 vol_slide
= sqrtf( (1.0f
-air
)*attn
*slide
* 0.25f
) * menu_gate
;
1202 const u32 flags
= AUDIO_FLAG_SPACIAL_3D
|AUDIO_FLAG_LOOP
;
1205 s
->aud_air
= audio_get_first_idle_channel();
1207 audio_channel_init( s
->aud_air
, &audio_board
[1], flags
);
1210 if( !s
->aud_slide
){
1211 s
->aud_slide
= audio_get_first_idle_channel();
1213 audio_channel_init( s
->aud_slide
, &audio_board
[2], flags
);
1217 /* brrrrrrrrrrrt sound for tiles and stuff
1218 * --------------------------------------------------------*/
1219 float sidechain_amt
= 0.0f
,
1220 hz
= vg_maxf( speed
* 2.0f
, 2.0f
);
1222 if( (s
->surface
== k_surface_prop_tiles
) &&
1223 (s
->state
.activity
< k_skate_activity_grind_any
) )
1224 sidechain_amt
= 1.0f
;
1226 sidechain_amt
= 0.0f
;
1228 audio_set_lfo_frequency( 0, hz
);
1229 audio_set_lfo_wave( 0, k_lfo_polynomial_bipolar
,
1230 vg_lerpf( 250.0f
, 80.0f
, attn
) );
1232 if( s
->sample_change_cooldown
> 0.0f
){
1233 s
->sample_change_cooldown
-= vg
.time_frame_delta
;
1236 int sample_type
= k_skate_sample_concrete
;
1238 if( s
->state
.activity
== k_skate_activity_grind_5050
){
1239 if( s
->surface
== k_surface_prop_metal
)
1240 sample_type
= k_skate_sample_metal_scrape_generic
;
1242 sample_type
= k_skate_sample_concrete_scrape_metal
;
1244 else if( (s
->state
.activity
== k_skate_activity_grind_back50
) ||
1245 (s
->state
.activity
== k_skate_activity_grind_front50
) )
1247 if( s
->surface
== k_surface_prop_metal
){
1248 sample_type
= k_skate_sample_metal_scrape_generic
;
1251 float a
= v3_dot( player
->rb
.to_world
[2], s
->grind_dir
);
1252 if( fabsf(a
) > 0.70710678118654752f
)
1253 sample_type
= k_skate_sample_concrete_scrape_wood
;
1255 sample_type
= k_skate_sample_concrete_scrape_metal
;
1258 else if( s
->state
.activity
== k_skate_activity_grind_boardslide
){
1259 if( s
->surface
== k_surface_prop_metal
)
1260 sample_type
= k_skate_sample_metal_scrape_generic
;
1262 sample_type
= k_skate_sample_concrete_scrape_wood
;
1265 audio_clip
*relevant_samples
[] = {
1273 if( (s
->main_sample_type
!= sample_type
) || (!s
->aud_main
) ){
1275 audio_channel_crossfade( s
->aud_main
, relevant_samples
[sample_type
],
1277 s
->sample_change_cooldown
= 0.1f
;
1278 s
->main_sample_type
= sample_type
;
1283 s
->aud_main
->colour
= 0x00103efe;
1284 audio_channel_set_spacial( s
->aud_main
, player
->rb
.co
, 40.0f
);
1285 //audio_channel_slope_volume( s->aud_main, 0.05f, vol_main );
1286 audio_channel_edit_volume( s
->aud_main
, vol_main
, 1 );
1287 audio_channel_sidechain_lfo( s
->aud_main
, 0, sidechain_amt
);
1289 float rate
= 1.0f
+ (attn
-0.5f
)*0.2f
;
1290 audio_channel_set_sampling_rate( s
->aud_main
, rate
);
1294 s
->aud_slide
->colour
= 0x00103efe;
1295 audio_channel_set_spacial( s
->aud_slide
, player
->rb
.co
, 40.0f
);
1296 //audio_channel_slope_volume( s->aud_slide, 0.05f, vol_slide );
1297 audio_channel_edit_volume( s
->aud_slide
, vol_slide
, 1 );
1298 audio_channel_sidechain_lfo( s
->aud_slide
, 0, sidechain_amt
);
1302 s
->aud_air
->colour
= 0x00103efe;
1303 audio_channel_set_spacial( s
->aud_air
, player
->rb
.co
, 40.0f
);
1304 //audio_channel_slope_volume( s->aud_air, 0.05f, vol_air );
1305 audio_channel_edit_volume( s
->aud_air
, vol_air
, 1 );
1312 * truck alignment model at ra(local)
1313 * returns 1 if valid surface:
1314 * surface_normal will be filled out with an averaged normal vector
1315 * axel_dir will be the direction from left to right wheels
1317 * returns 0 if no good surface found
1320 int skate_compute_surface_alignment( player_instance
*player
,
1322 v3f surface_normal
, v3f axel_dir
)
1324 struct player_skate
*s
= &player
->_skate
;
1325 world_instance
*world
= get_active_world();
1327 v3f truck
, left
, right
;
1328 m4x3_mulv( player
->rb
.to_world
, ra
, truck
);
1330 v3_muladds( truck
, player
->rb
.to_world
[0], -k_board_width
, left
);
1331 v3_muladds( truck
, player
->rb
.to_world
[0], k_board_width
, right
);
1332 vg_line( left
, right
, colour
);
1334 float k_max_truck_flex
= VG_PIf
* 0.25f
;
1336 ray_hit ray_l
, ray_r
;
1339 v3_muls( player
->rb
.to_world
[1], -1.0f
, dir
);
1341 int res_l
= 0, res_r
= 0;
1343 for( int i
=0; i
<8; i
++ )
1345 float t
= 1.0f
- (float)i
* (1.0f
/8.0f
);
1346 v3_muladds( truck
, player
->rb
.to_world
[0], -k_board_radius
*t
, left
);
1347 v3_muladds( left
, player
->rb
.to_world
[1], k_board_radius
, left
);
1348 ray_l
.dist
= 2.1f
* k_board_radius
;
1350 res_l
= ray_world( world
, left
, dir
, &ray_l
);
1356 for( int i
=0; i
<8; i
++ )
1358 float t
= 1.0f
- (float)i
* (1.0f
/8.0f
);
1359 v3_muladds( truck
, player
->rb
.to_world
[0], k_board_radius
*t
, right
);
1360 v3_muladds( right
, player
->rb
.to_world
[1], k_board_radius
, right
);
1361 ray_r
.dist
= 2.1f
* k_board_radius
;
1363 res_r
= ray_world( world
, right
, dir
, &ray_r
);
1371 v3f tangent_average
;
1372 v3_muladds( truck
, player
->rb
.to_world
[1], -k_board_radius
, midpoint
);
1373 v3_zero( tangent_average
);
1375 if( res_l
|| res_r
)
1378 v3_copy( midpoint
, p0
);
1379 v3_copy( midpoint
, p1
);
1383 v3_copy( ray_l
.pos
, p0
);
1384 v3_cross( ray_l
.normal
, player
->rb
.to_world
[0], t
);
1385 v3_add( t
, tangent_average
, tangent_average
);
1389 v3_copy( ray_r
.pos
, p1
);
1390 v3_cross( ray_r
.normal
, player
->rb
.to_world
[0], t
);
1391 v3_add( t
, tangent_average
, tangent_average
);
1394 v3_sub( p1
, p0
, v0
);
1399 /* fallback: use the closes point to the trucks */
1401 int idx
= bh_closest_point( world
->geo_bh
, midpoint
, closest
, 0.1f
);
1405 u32
*tri
= &world
->scene_geo
.arrindices
[ idx
* 3 ];
1408 for( int j
=0; j
<3; j
++ )
1409 v3_copy( world
->scene_geo
.arrvertices
[ tri
[j
] ].co
, verts
[j
] );
1411 v3f vert0
, vert1
, n
;
1412 v3_sub( verts
[1], verts
[0], vert0
);
1413 v3_sub( verts
[2], verts
[0], vert1
);
1414 v3_cross( vert0
, vert1
, n
);
1417 if( v3_dot( n
, player
->rb
.to_world
[1] ) < 0.3f
)
1420 v3_cross( n
, player
->rb
.to_world
[2], v0
);
1421 v3_muladds( v0
, player
->rb
.to_world
[2],
1422 -v3_dot( player
->rb
.to_world
[2], v0
), v0
);
1426 v3_cross( n
, player
->rb
.to_world
[0], t
);
1427 v3_add( t
, tangent_average
, tangent_average
);
1433 v3_muladds( truck
, v0
, k_board_width
, right
);
1434 v3_muladds( truck
, v0
, -k_board_width
, left
);
1436 vg_line( left
, right
, VG__WHITE
);
1438 v3_normalize( tangent_average
);
1439 v3_cross( v0
, tangent_average
, surface_normal
);
1440 v3_copy( v0
, axel_dir
);
1445 VG_STATIC
void skate_weight_distribute( player_instance
*player
)
1447 struct player_skate
*s
= &player
->_skate
;
1448 v3_zero( s
->weight_distribution
);
1450 int reverse_dir
= v3_dot( player
->rb
.to_world
[2], player
->rb
.v
) < 0.0f
?1:-1;
1453 joystick_state( k_srjoystick_steer
, steer
);
1455 if( s
->state
.manual_direction
== 0 ){
1456 if( (steer
[1] > 0.7f
) && (s
->state
.activity
== k_skate_activity_ground
) &&
1457 (s
->state
.jump_charge
<= 0.01f
) )
1458 s
->state
.manual_direction
= reverse_dir
;
1461 if( steer
[1] < 0.1f
){
1462 s
->state
.manual_direction
= 0;
1465 if( reverse_dir
!= s
->state
.manual_direction
){
1471 if( s
->state
.manual_direction
){
1472 float amt
= vg_minf( steer
[1] * 8.0f
, 1.0f
);
1473 s
->weight_distribution
[2] = k_board_length
* amt
*
1474 (float)s
->state
.manual_direction
;
1477 if( s
->state
.manual_direction
){
1480 m3x3_mulv( player
->rb
.to_world
, s
->weight_distribution
, plane_z
);
1481 v3_negate( plane_z
, plane_z
);
1483 v3_muladds( plane_z
, s
->surface_picture
,
1484 -v3_dot( plane_z
, s
->surface_picture
), plane_z
);
1485 v3_normalize( plane_z
);
1487 v3_muladds( plane_z
, s
->surface_picture
, 0.3f
, plane_z
);
1488 v3_normalize( plane_z
);
1491 v3_muladds( player
->rb
.co
, plane_z
, 1.5f
, p1
);
1492 vg_line( player
->rb
.co
, p1
, VG__GREEN
);
1495 v3_muls( player
->rb
.to_world
[2], -(float)s
->state
.manual_direction
,
1498 rb_effect_spring_target_vector( &player
->rb
, refdir
, plane_z
,
1499 k_manul_spring
, k_manul_dampener
,
1504 VG_STATIC
void skate_adjust_up_direction( player_instance
*player
)
1506 struct player_skate
*s
= &player
->_skate
;
1508 if( s
->state
.activity
== k_skate_activity_ground
){
1510 v3_copy( s
->surface_picture
, target
);
1512 target
[1] += 2.0f
* s
->surface_picture
[1];
1513 v3_normalize( target
);
1515 v3_lerp( s
->state
.up_dir
, target
,
1516 8.0f
* s
->substep_delta
, s
->state
.up_dir
);
1518 else if( s
->state
.activity
<= k_skate_activity_air_to_grind
){
1519 v3_lerp( s
->state
.up_dir
, player
->rb
.to_world
[1],
1520 8.0f
* s
->substep_delta
, s
->state
.up_dir
);
1523 v3_lerp( s
->state
.up_dir
, player
->basis
[1],
1524 12.0f
* s
->substep_delta
, s
->state
.up_dir
);
1528 VG_STATIC
int skate_point_visible( v3f origin
, v3f target
)
1531 v3_sub( target
, origin
, dir
);
1534 ray
.dist
= v3_length( dir
);
1535 v3_muls( dir
, 1.0f
/ray
.dist
, dir
);
1538 if( ray_world( get_active_world(), origin
, dir
, &ray
) )
1544 VG_STATIC
void skate_grind_orient( struct grind_info
*inf
, m3x3f mtx
)
1546 v3_copy( inf
->dir
, mtx
[0] );
1547 v3_copy( inf
->n
, mtx
[1] );
1548 v3_cross( mtx
[0], mtx
[1], mtx
[2] );
1551 VG_STATIC
void skate_grind_friction( player_instance
*player
,
1552 struct grind_info
*inf
, float strength
)
1555 v3_muladds( player
->rb
.to_world
[2], inf
->n
,
1556 -v3_dot( player
->rb
.to_world
[2], inf
->n
), v2
);
1558 float a
= 1.0f
-fabsf( v3_dot( v2
, inf
->dir
) ),
1559 dir
= vg_signf( v3_dot( player
->rb
.v
, inf
->dir
) ),
1560 F
= a
* -dir
* k_grind_max_friction
;
1562 v3_muladds( player
->rb
.v
, inf
->dir
, F
*k_rb_delta
*strength
, player
->rb
.v
);
1565 VG_STATIC
void skate_grind_decay( player_instance
*player
,
1566 struct grind_info
*inf
, float strength
)
1569 skate_grind_orient( inf
, mtx
);
1570 m3x3_transpose( mtx
, mtx_inv
);
1573 m3x3_mulv( mtx_inv
, player
->rb
.v
, v_grind
);
1575 float decay
= 1.0f
- ( k_rb_delta
* k_grind_decayxy
* strength
);
1576 v3_mul( v_grind
, (v3f
){ 1.0f
, decay
, decay
}, v_grind
);
1577 m3x3_mulv( mtx
, v_grind
, player
->rb
.v
);
1580 VG_STATIC
void skate_grind_truck_apply( player_instance
*player
,
1581 float sign
, struct grind_info
*inf
,
1584 struct player_skate
*s
= &player
->_skate
;
1587 v3f ra
= { 0.0f
, -k_board_radius
, sign
* k_board_length
};
1589 m3x3_mulv( player
->rb
.to_world
, ra
, raw
);
1590 v3_add( player
->rb
.co
, raw
, wsp
);
1592 v3_copy( ra
, s
->weight_distribution
);
1595 v3_sub( inf
->co
, wsp
, delta
);
1598 v3_muladds( player
->rb
.v
, delta
, k_spring_force
*strength
*k_rb_delta
,
1601 skate_grind_decay( player
, inf
, strength
);
1602 skate_grind_friction( player
, inf
, strength
);
1604 /* yeah yeah yeah yeah */
1605 v3f raw_nplane
, axis
;
1606 v3_muladds( raw
, inf
->n
, -v3_dot( inf
->n
, raw
), raw_nplane
);
1607 v3_cross( raw_nplane
, inf
->n
, axis
);
1608 v3_normalize( axis
);
1612 skate_grind_orient( inf
, mtx
);
1613 v3f target_fwd
, fwd
, up
, target_up
;
1614 m3x3_mulv( mtx
, s
->grind_vec
, target_fwd
);
1615 v3_copy( raw_nplane
, fwd
);
1616 v3_copy( player
->rb
.to_world
[1], up
);
1617 v3_copy( inf
->n
, target_up
);
1619 v3_muladds( target_fwd
, inf
->n
, -v3_dot(inf
->n
,target_fwd
), target_fwd
);
1620 v3_muladds( fwd
, inf
->n
, -v3_dot(inf
->n
,fwd
), fwd
);
1622 v3_normalize( target_fwd
);
1623 v3_normalize( fwd
);
1626 joystick_state( k_srjoystick_steer
, steer
);
1628 float way
= steer
[1] * vg_signf( v3_dot( raw_nplane
, player
->rb
.v
) );
1631 q_axis_angle( q
, axis
, VG_PIf
*0.125f
* way
);
1632 q_mulv( q
, target_up
, target_up
);
1633 q_mulv( q
, target_fwd
, target_fwd
);
1635 rb_effect_spring_target_vector( &player
->rb
, up
, target_up
,
1640 rb_effect_spring_target_vector( &player
->rb
, fwd
, target_fwd
,
1641 k_grind_spring
*strength
,
1642 k_grind_dampener
*strength
,
1645 vg_line_arrow( player
->rb
.co
, target_up
, 1.0f
, VG__GREEN
);
1646 vg_line_arrow( player
->rb
.co
, fwd
, 0.8f
, VG__RED
);
1647 vg_line_arrow( player
->rb
.co
, target_fwd
, 1.0f
, VG__YELOW
);
1649 s
->grind_strength
= strength
;
1652 struct grind_limit
*limit
= &s
->limits
[ s
->limit_count
++ ];
1653 m4x3_mulv( player
->rb
.to_local
, wsp
, limit
->ra
);
1654 m3x3_mulv( player
->rb
.to_local
, inf
->n
, limit
->n
);
1657 v3_copy( inf
->dir
, s
->grind_dir
);
1660 VG_STATIC
void skate_5050_apply( player_instance
*player
,
1661 struct grind_info
*inf_front
,
1662 struct grind_info
*inf_back
)
1664 struct player_skate
*s
= &player
->_skate
;
1665 struct grind_info inf_avg
;
1667 v3_sub( inf_front
->co
, inf_back
->co
, inf_avg
.dir
);
1668 v3_muladds( inf_back
->co
, inf_avg
.dir
, 0.5f
, inf_avg
.co
);
1669 v3_normalize( inf_avg
.dir
);
1671 v3f axis_front
, axis_back
, axis
;
1672 v3_cross( inf_front
->dir
, inf_front
->n
, axis_front
);
1673 v3_cross( inf_back
->dir
, inf_back
->n
, axis_back
);
1674 v3_add( axis_front
, axis_back
, axis
);
1675 v3_normalize( axis
);
1677 v3_cross( axis
, inf_avg
.dir
, inf_avg
.n
);
1678 skate_grind_decay( player
, &inf_avg
, 1.0f
);
1681 joystick_state( k_srjoystick_steer
, steer
);
1683 float way
= steer
[1] *
1684 vg_signf( v3_dot( player
->rb
.to_world
[2], player
->rb
.v
) );
1687 v3_copy( player
->rb
.to_world
[1], up
);
1688 v3_copy( inf_avg
.n
, target_up
);
1689 q_axis_angle( q
, player
->rb
.to_world
[0], VG_PIf
*0.25f
* -way
);
1690 q_mulv( q
, target_up
, target_up
);
1692 v3_zero( s
->weight_distribution
);
1693 s
->weight_distribution
[2] = k_board_length
* -way
;
1695 rb_effect_spring_target_vector( &player
->rb
, up
, target_up
,
1700 v3f fwd_nplane
, dir_nplane
;
1701 v3_muladds( player
->rb
.to_world
[2], inf_avg
.n
,
1702 -v3_dot( player
->rb
.to_world
[2], inf_avg
.n
), fwd_nplane
);
1705 v3_muls( inf_avg
.dir
, v3_dot( fwd_nplane
, inf_avg
.dir
), dir
);
1706 v3_muladds( dir
, inf_avg
.n
, -v3_dot( dir
, inf_avg
.n
), dir_nplane
);
1708 v3_normalize( fwd_nplane
);
1709 v3_normalize( dir_nplane
);
1711 rb_effect_spring_target_vector( &player
->rb
, fwd_nplane
, dir_nplane
,
1716 v3f pos_front
= { 0.0f
, -k_board_radius
, -1.0f
* k_board_length
},
1717 pos_back
= { 0.0f
, -k_board_radius
, 1.0f
* k_board_length
},
1718 delta_front
, delta_back
, delta_total
;
1720 m4x3_mulv( player
->rb
.to_world
, pos_front
, pos_front
);
1721 m4x3_mulv( player
->rb
.to_world
, pos_back
, pos_back
);
1723 v3_sub( inf_front
->co
, pos_front
, delta_front
);
1724 v3_sub( inf_back
->co
, pos_back
, delta_back
);
1725 v3_add( delta_front
, delta_back
, delta_total
);
1727 v3_muladds( player
->rb
.v
, delta_total
, 50.0f
* k_rb_delta
, player
->rb
.v
);
1730 struct grind_limit
*limit
= &s
->limits
[ s
->limit_count
++ ];
1731 v3_zero( limit
->ra
);
1732 m3x3_mulv( player
->rb
.to_local
, inf_avg
.n
, limit
->n
);
1735 v3_copy( inf_avg
.dir
, s
->grind_dir
);
1738 VG_STATIC
int skate_grind_truck_renew( player_instance
*player
, float sign
,
1739 struct grind_info
*inf
)
1741 struct player_skate
*s
= &player
->_skate
;
1743 v3f wheel_co
= { 0.0f
, 0.0f
, sign
* k_board_length
},
1744 grind_co
= { 0.0f
, -k_board_radius
, sign
* k_board_length
};
1746 m4x3_mulv( player
->rb
.to_world
, wheel_co
, wheel_co
);
1747 m4x3_mulv( player
->rb
.to_world
, grind_co
, grind_co
);
1749 /* Exit condition: lost grind tracking */
1750 if( !skate_grind_scansq( player
, grind_co
, player
->rb
.v
, 0.3f
, inf
) )
1753 /* Exit condition: cant see grind target directly */
1754 if( !skate_point_visible( wheel_co
, inf
->co
) )
1757 /* Exit condition: minimum velocity not reached, but allow a bit of error */
1758 float dv
= fabsf(v3_dot( player
->rb
.v
, inf
->dir
)),
1759 minv
= k_grind_axel_min_vel
*0.8f
;
1764 if( fabsf(v3_dot( inf
->dir
, s
->grind_dir
)) < k_grind_max_edge_angle
)
1767 v3_copy( inf
->dir
, s
->grind_dir
);
1771 VG_STATIC
int skate_grind_truck_entry( player_instance
*player
, float sign
,
1772 struct grind_info
*inf
)
1774 struct player_skate
*s
= &player
->_skate
;
1777 v3f ra
= { 0.0f
, -k_board_radius
, sign
* k_board_length
};
1780 m3x3_mulv( player
->rb
.to_world
, ra
, raw
);
1781 v3_add( player
->rb
.co
, raw
, wsp
);
1783 if( skate_grind_scansq( player
, wsp
, player
->rb
.v
, 0.3, inf
) )
1785 if( fabsf(v3_dot( player
->rb
.v
, inf
->dir
)) < k_grind_axel_min_vel
)
1788 /* velocity should be at least 60% aligned */
1790 v3_cross( inf
->n
, inf
->dir
, axis
);
1791 v3_muladds( player
->rb
.v
, inf
->n
, -v3_dot( player
->rb
.v
, inf
->n
), pv
);
1793 if( v3_length2( pv
) < 0.0001f
)
1797 if( fabsf(v3_dot( pv
, inf
->dir
)) < k_grind_axel_max_angle
)
1800 if( v3_dot( player
->rb
.v
, inf
->n
) > 0.5f
)
1804 /* check for vertical alignment */
1805 if( v3_dot( player
->rb
.to_world
[1], inf
->n
) < k_grind_axel_max_vangle
)
1809 v3f local_co
, local_dir
, local_n
;
1810 m4x3_mulv( player
->rb
.to_local
, inf
->co
, local_co
);
1811 m3x3_mulv( player
->rb
.to_local
, inf
->dir
, local_dir
);
1812 m3x3_mulv( player
->rb
.to_local
, inf
->n
, local_n
);
1814 v2f delta
= { local_co
[0], local_co
[2] - k_board_length
*sign
};
1816 float truck_height
= -(k_board_radius
+0.03f
);
1819 v3_cross( player
->rb
.w
, raw
, rv
);
1820 v3_add( player
->rb
.v
, rv
, rv
);
1822 if( (local_co
[1] >= truck_height
) &&
1823 (v2_length2( delta
) <= k_board_radius
*k_board_radius
) )
1832 VG_STATIC
void skate_boardslide_apply( player_instance
*player
,
1833 struct grind_info
*inf
)
1835 struct player_skate
*s
= &player
->_skate
;
1837 v3f local_co
, local_dir
, local_n
;
1838 m4x3_mulv( player
->rb
.to_local
, inf
->co
, local_co
);
1839 m3x3_mulv( player
->rb
.to_local
, inf
->dir
, local_dir
);
1840 m3x3_mulv( player
->rb
.to_local
, inf
->n
, local_n
);
1843 v3_muladds( local_co
, local_dir
, local_co
[0]/-local_dir
[0],
1845 v3_copy( intersection
, s
->weight_distribution
);
1847 skate_grind_decay( player
, inf
, 0.0125f
);
1848 skate_grind_friction( player
, inf
, 0.25f
);
1850 /* direction alignment */
1852 v3_cross( local_dir
, local_n
, perp
);
1853 v3_muls( local_dir
, vg_signf(local_dir
[0]), dir
);
1854 v3_muls( perp
, vg_signf(perp
[2]), perp
);
1856 m3x3_mulv( player
->rb
.to_world
, dir
, dir
);
1857 m3x3_mulv( player
->rb
.to_world
, perp
, perp
);
1860 q_axis_angle( qbalance
, dir
, local_co
[0]*k_grind_balance
);
1861 q_mulv( qbalance
, perp
, perp
);
1863 rb_effect_spring_target_vector( &player
->rb
, player
->rb
.to_world
[0],
1865 k_grind_spring
, k_grind_dampener
,
1868 rb_effect_spring_target_vector( &player
->rb
, player
->rb
.to_world
[2],
1870 k_grind_spring
, k_grind_dampener
,
1873 vg_line_arrow( player
->rb
.co
, dir
, 0.5f
, VG__GREEN
);
1874 vg_line_arrow( player
->rb
.co
, perp
, 0.5f
, VG__BLUE
);
1876 v3_copy( inf
->dir
, s
->grind_dir
);
1879 VG_STATIC
int skate_boardslide_entry( player_instance
*player
,
1880 struct grind_info
*inf
)
1882 struct player_skate
*s
= &player
->_skate
;
1884 if( skate_grind_scansq( player
, player
->rb
.co
,
1885 player
->rb
.to_world
[0], k_board_length
,
1888 v3f local_co
, local_dir
;
1889 m4x3_mulv( player
->rb
.to_local
, inf
->co
, local_co
);
1890 m3x3_mulv( player
->rb
.to_local
, inf
->dir
, local_dir
);
1892 if( (fabsf(local_co
[2]) <= k_board_length
) && /* within wood area */
1893 (local_co
[1] >= 0.0f
) && /* at deck level */
1894 (fabsf(local_dir
[0]) >= 0.25f
) ) /* perpendicular to us */
1896 if( fabsf(v3_dot( player
->rb
.v
, inf
->dir
)) < k_grind_axel_min_vel
)
1906 VG_STATIC
int skate_boardslide_renew( player_instance
*player
,
1907 struct grind_info
*inf
)
1909 struct player_skate
*s
= &player
->_skate
;
1911 if( !skate_grind_scansq( player
, player
->rb
.co
,
1912 player
->rb
.to_world
[0], k_board_length
,
1916 /* Exit condition: cant see grind target directly */
1918 v3_muladds( player
->rb
.co
, player
->rb
.to_world
[1], 0.2f
, vis
);
1919 if( !skate_point_visible( vis
, inf
->co
) )
1922 /* Exit condition: minimum velocity not reached, but allow a bit of error */
1923 float dv
= fabsf(v3_dot( player
->rb
.v
, inf
->dir
)),
1924 minv
= k_grind_axel_min_vel
*0.8f
;
1929 if( fabsf(v3_dot( inf
->dir
, s
->grind_dir
)) < k_grind_max_edge_angle
)
1935 VG_STATIC
void skate_store_grind_vec( player_instance
*player
,
1936 struct grind_info
*inf
)
1938 struct player_skate
*s
= &player
->_skate
;
1941 skate_grind_orient( inf
, mtx
);
1942 m3x3_transpose( mtx
, mtx
);
1945 v3_sub( inf
->co
, player
->rb
.co
, raw
);
1947 m3x3_mulv( mtx
, raw
, s
->grind_vec
);
1948 v3_normalize( s
->grind_vec
);
1949 v3_copy( inf
->dir
, s
->grind_dir
);
1952 VG_STATIC
enum skate_activity
skate_availible_grind( player_instance
*player
)
1954 struct player_skate
*s
= &player
->_skate
;
1956 if( s
->grind_cooldown
> 100 ){
1957 vg_fatal_error( "wth!\n" );
1960 /* debounces this state manager a little bit */
1961 if( s
->grind_cooldown
){
1962 s
->grind_cooldown
--;
1963 return k_skate_activity_undefined
;
1966 struct grind_info inf_back50
,
1978 joystick_state( k_srjoystick_steer
, steer
);
1980 if( s
->state
.activity
== k_skate_activity_grind_5050
||
1981 s
->state
.activity
== k_skate_activity_grind_back50
||
1982 s
->state
.activity
== k_skate_activity_grind_front50
)
1984 float tilt
= steer
[1];
1986 if( fabsf(tilt
) >= 0.25f
){
1987 v3f raw
= {0.0f
,0.0f
,tilt
};
1988 m3x3_mulv( player
->rb
.to_world
, raw
, raw
);
1990 float way
= tilt
* vg_signf( v3_dot( raw
, player
->rb
.v
) );
1992 if( way
< 0.0f
) allow_front
= 0;
1993 else allow_back
= 0;
1997 if( s
->state
.activity
== k_skate_activity_grind_boardslide
){
1998 res_slide
= skate_boardslide_renew( player
, &inf_slide
);
2000 else if( s
->state
.activity
== k_skate_activity_grind_back50
){
2001 res_back50
= skate_grind_truck_renew( player
, 1.0f
, &inf_back50
);
2004 res_front50
= skate_grind_truck_entry( player
, -1.0f
, &inf_front50
);
2006 else if( s
->state
.activity
== k_skate_activity_grind_front50
){
2007 res_front50
= skate_grind_truck_renew( player
, -1.0f
, &inf_front50
);
2010 res_back50
= skate_grind_truck_entry( player
, 1.0f
, &inf_back50
);
2012 else if( s
->state
.activity
== k_skate_activity_grind_5050
){
2014 res_front50
= skate_grind_truck_renew( player
, -1.0f
, &inf_front50
);
2016 res_back50
= skate_grind_truck_renew( player
, 1.0f
, &inf_back50
);
2019 res_slide
= skate_boardslide_entry( player
, &inf_slide
);
2022 res_back50
= skate_grind_truck_entry( player
, 1.0f
, &inf_back50
);
2025 res_front50
= skate_grind_truck_entry( player
, -1.0f
, &inf_front50
);
2027 if( res_back50
!= res_front50
){
2028 int wants_to_do_that
= fabsf(steer
[1]) >= 0.25f
;
2030 res_back50
&= wants_to_do_that
;
2031 res_front50
&= wants_to_do_that
;
2035 const enum skate_activity table
[] =
2036 { /* slide | back | front */
2037 k_skate_activity_undefined
, /* 0 0 0 */
2038 k_skate_activity_grind_front50
, /* 0 0 1 */
2039 k_skate_activity_grind_back50
, /* 0 1 0 */
2040 k_skate_activity_grind_5050
, /* 0 1 1 */
2042 /* slide has priority always */
2043 k_skate_activity_grind_boardslide
, /* 1 0 0 */
2044 k_skate_activity_grind_boardslide
, /* 1 0 1 */
2045 k_skate_activity_grind_boardslide
, /* 1 1 0 */
2046 k_skate_activity_grind_boardslide
, /* 1 1 1 */
2048 , new_activity
= table
[ res_slide
<< 2 | res_back50
<< 1 | res_front50
];
2050 if( new_activity
== k_skate_activity_undefined
){
2051 if( s
->state
.activity
>= k_skate_activity_grind_any
){
2052 s
->grind_cooldown
= 15;
2053 s
->surface_cooldown
= 10;
2056 else if( new_activity
== k_skate_activity_grind_boardslide
){
2057 skate_boardslide_apply( player
, &inf_slide
);
2059 else if( new_activity
== k_skate_activity_grind_back50
){
2060 if( s
->state
.activity
!= k_skate_activity_grind_back50
)
2061 skate_store_grind_vec( player
, &inf_back50
);
2063 skate_grind_truck_apply( player
, 1.0f
, &inf_back50
, 1.0f
);
2065 else if( new_activity
== k_skate_activity_grind_front50
){
2066 if( s
->state
.activity
!= k_skate_activity_grind_front50
)
2067 skate_store_grind_vec( player
, &inf_front50
);
2069 skate_grind_truck_apply( player
, -1.0f
, &inf_front50
, 1.0f
);
2071 else if( new_activity
== k_skate_activity_grind_5050
)
2072 skate_5050_apply( player
, &inf_front50
, &inf_back50
);
2074 return new_activity
;
2077 VG_STATIC
void player__skate_update( player_instance
*player
)
2079 struct player_skate
*s
= &player
->_skate
;
2080 world_instance
*world
= get_active_world();
2082 v3_copy( player
->rb
.co
, s
->state
.prev_pos
);
2083 s
->state
.activity_prev
= s
->state
.activity
;
2085 struct board_collider
2092 enum board_collider_state
2094 k_collider_state_default
,
2095 k_collider_state_disabled
,
2096 k_collider_state_colliding
2103 { 0.0f
, 0.0f
, -k_board_length
},
2104 .radius
= k_board_radius
,
2108 { 0.0f
, 0.0f
, k_board_length
},
2109 .radius
= k_board_radius
,
2116 if( s
->state
.activity
<= k_skate_activity_air_to_grind
){
2118 float min_dist
= 0.6f
;
2119 for( int i
=0; i
<2; i
++ ){
2121 m4x3_mulv( player
->rb
.to_world
, wheels
[i
].pos
, wpos
);
2123 if( bh_closest_point( world
->geo_bh
, wpos
, closest
, min_dist
) != -1 ){
2124 min_dist
= vg_minf( min_dist
, v3_dist( closest
, wpos
) );
2128 float vy
= v3_dot( player
->basis
[1], player
->rb
.v
);
2129 vy
= vg_maxf( 0.0f
, vy
);
2131 slap
= vg_clampf( (min_dist
/0.5f
) + vy
, 0.0f
, 1.0f
)*0.3f
;
2133 s
->state
.slap
= vg_lerpf( s
->state
.slap
, slap
, 10.0f
*k_rb_delta
);
2135 wheels
[0].pos
[1] = s
->state
.slap
;
2136 wheels
[1].pos
[1] = s
->state
.slap
;
2142 const int k_wheel_count
= 2;
2144 s
->substep
= k_rb_delta
;
2145 s
->substep_delta
= s
->substep
;
2148 int substep_count
= 0;
2150 v3_zero( s
->surface_picture
);
2152 int prev_contacts
[2];
2154 for( int i
=0; i
<k_wheel_count
; i
++ ){
2155 wheels
[i
].state
= k_collider_state_default
;
2156 prev_contacts
[i
] = s
->wheel_contacts
[i
];
2159 /* check if we can enter or continue grind */
2160 enum skate_activity grindable_activity
= skate_availible_grind( player
);
2161 if( grindable_activity
!= k_skate_activity_undefined
){
2162 s
->state
.activity
= grindable_activity
;
2166 int contact_count
= 0;
2167 for( int i
=0; i
<2; i
++ ){
2169 v3_copy( player
->rb
.to_world
[0], axel
);
2171 if( skate_compute_surface_alignment( player
, wheels
[i
].pos
,
2172 wheels
[i
].colour
, normal
, axel
) )
2174 rb_effect_spring_target_vector( &player
->rb
, player
->rb
.to_world
[0],
2176 k_surface_spring
, k_surface_dampener
,
2179 v3_add( normal
, s
->surface_picture
, s
->surface_picture
);
2181 s
->wheel_contacts
[i
] = 1;
2184 s
->wheel_contacts
[i
] = 0;
2187 m3x3_mulv( player
->rb
.to_local
, axel
, s
->truckv0
[i
] );
2190 if( s
->surface_cooldown
){
2191 s
->surface_cooldown
--;
2195 if( (prev_contacts
[0]+prev_contacts
[1] == 1) && (contact_count
== 2) ){
2197 for( int i
=0; i
<2; i
++ ){
2198 if( !prev_contacts
[i
] ){
2200 m4x3_mulv( player
->rb
.to_world
, wheels
[i
].pos
, co
);
2201 audio_oneshot_3d( &audio_taps
[rand()%4], co
, 40.0f
, 0.75f
);
2207 if( contact_count
){
2208 s
->state
.activity
= k_skate_activity_ground
;
2209 s
->state
.gravity_bias
= k_gravity
;
2210 v3_normalize( s
->surface_picture
);
2212 skate_apply_friction_model( player
);
2213 skate_weight_distribute( player
);
2216 if( s
->state
.activity
> k_skate_activity_air_to_grind
)
2217 s
->state
.activity
= k_skate_activity_air
;
2219 v3_zero( s
->weight_distribution
);
2220 skate_apply_air_model( player
);
2225 if( s
->state
.activity
== k_skate_activity_grind_back50
)
2226 wheels
[1].state
= k_collider_state_disabled
;
2227 if( s
->state
.activity
== k_skate_activity_grind_front50
)
2228 wheels
[0].state
= k_collider_state_disabled
;
2229 if( s
->state
.activity
== k_skate_activity_grind_5050
){
2230 wheels
[0].state
= k_collider_state_disabled
;
2231 wheels
[1].state
= k_collider_state_disabled
;
2234 /* all activities */
2235 skate_apply_steering_model( player
);
2236 skate_adjust_up_direction( player
);
2237 skate_apply_cog_model( player
);
2238 skate_apply_jump_model( player
);
2239 skate_apply_grab_model( player
);
2240 skate_apply_trick_model( player
);
2241 skate_apply_pump_model( player
);
2246 * Phase 0: Continous collision detection
2247 * --------------------------------------------------------------------------
2250 v3f head_wp0
, head_wp1
, start_co
;
2251 m4x3_mulv( player
->rb
.to_world
, s
->state
.head_position
, head_wp0
);
2252 v3_copy( player
->rb
.co
, start_co
);
2254 /* calculate transform one step into future */
2257 v3_muladds( player
->rb
.co
, player
->rb
.v
, s
->substep
, future_co
);
2259 if( v3_length2( player
->rb
.w
) > 0.0f
){
2262 v3_copy( player
->rb
.w
, axis
);
2264 float mag
= v3_length( axis
);
2265 v3_divs( axis
, mag
, axis
);
2266 q_axis_angle( rotation
, axis
, mag
*s
->substep
);
2267 q_mul( rotation
, player
->rb
.q
, future_q
);
2268 q_normalize( future_q
);
2271 v4_copy( player
->rb
.q
, future_q
);
2273 v3f future_cg
, current_cg
, cg_offset
;
2274 q_mulv( player
->rb
.q
, s
->weight_distribution
, current_cg
);
2275 q_mulv( future_q
, s
->weight_distribution
, future_cg
);
2276 v3_sub( future_cg
, current_cg
, cg_offset
);
2278 /* calculate the minimum time we can move */
2279 float max_time
= s
->substep
;
2281 for( int i
=0; i
<k_wheel_count
; i
++ ){
2282 if( wheels
[i
].state
== k_collider_state_disabled
)
2285 v3f current
, future
, r_cg
;
2287 q_mulv( future_q
, wheels
[i
].pos
, future
);
2288 v3_add( future
, future_co
, future
);
2289 v3_add( cg_offset
, future
, future
);
2291 q_mulv( player
->rb
.q
, wheels
[i
].pos
, current
);
2292 v3_add( current
, player
->rb
.co
, current
);
2297 float cast_radius
= wheels
[i
].radius
- k_penetration_slop
* 2.0f
;
2298 if( spherecast_world( world
, current
, future
, cast_radius
, &t
, n
) != -1)
2299 max_time
= vg_minf( max_time
, t
* s
->substep
);
2302 /* clamp to a fraction of delta, to prevent locking */
2303 float rate_lock
= substep_count
;
2304 rate_lock
*= k_rb_delta
* 0.1f
;
2305 rate_lock
*= rate_lock
;
2307 max_time
= vg_maxf( max_time
, rate_lock
);
2308 s
->substep_delta
= max_time
;
2311 v3_muladds( player
->rb
.co
, player
->rb
.v
, s
->substep_delta
, player
->rb
.co
);
2312 if( v3_length2( player
->rb
.w
) > 0.0f
){
2315 v3_copy( player
->rb
.w
, axis
);
2317 float mag
= v3_length( axis
);
2318 v3_divs( axis
, mag
, axis
);
2319 q_axis_angle( rotation
, axis
, mag
*s
->substep_delta
);
2320 q_mul( rotation
, player
->rb
.q
, player
->rb
.q
);
2321 q_normalize( player
->rb
.q
);
2323 q_mulv( player
->rb
.q
, s
->weight_distribution
, future_cg
);
2324 v3_sub( current_cg
, future_cg
, cg_offset
);
2325 v3_add( player
->rb
.co
, cg_offset
, player
->rb
.co
);
2328 rb_update_transform( &player
->rb
);
2329 v3_muladds( player
->rb
.v
, player
->basis
[1],
2330 -s
->state
.gravity_bias
* s
->substep_delta
, player
->rb
.v
);
2332 s
->substep
-= s
->substep_delta
;
2334 rb_ct manifold
[128];
2335 int manifold_len
= 0;
2338 * Phase -1: head detection
2339 * --------------------------------------------------------------------------
2341 m4x3_mulv( player
->rb
.to_world
, s
->state
.head_position
, head_wp1
);
2345 if( (v3_dist2( head_wp0
, head_wp1
) > 0.001f
) &&
2346 (spherecast_world( world
, head_wp0
, head_wp1
, 0.2f
, &t
, n
) != -1) )
2348 v3_lerp( start_co
, player
->rb
.co
, t
, player
->rb
.co
);
2349 rb_update_transform( &player
->rb
);
2351 player__skate_kill_audio( player
);
2352 player__dead_transition( player
);
2357 * Phase 1: Regular collision detection
2358 * --------------------------------------------------------------------------
2361 for( int i
=0; i
<k_wheel_count
; i
++ ){
2362 if( wheels
[i
].state
== k_collider_state_disabled
)
2366 m3x3_identity( mtx
);
2367 m4x3_mulv( player
->rb
.to_world
, wheels
[i
].pos
, mtx
[3] );
2369 rb_sphere collider
= { .radius
= wheels
[i
].radius
};
2371 rb_ct
*man
= &manifold
[ manifold_len
];
2373 int l
= skate_collide_smooth( player
, mtx
, &collider
, man
);
2375 wheels
[i
].state
= k_collider_state_colliding
;
2380 float grind_radius
= k_board_radius
* 0.75f
;
2381 rb_capsule capsule
= { .height
= (k_board_length
+0.2f
)*2.0f
,
2382 .radius
=grind_radius
};
2384 v3_muls( player
->rb
.to_world
[0], 1.0f
, mtx
[0] );
2385 v3_muls( player
->rb
.to_world
[2], -1.0f
, mtx
[1] );
2386 v3_muls( player
->rb
.to_world
[1], 1.0f
, mtx
[2] );
2387 v3_muladds( player
->rb
.to_world
[3], player
->rb
.to_world
[1],
2388 grind_radius
+ k_board_radius
*0.25f
+s
->state
.slap
, mtx
[3] );
2390 rb_ct
*cman
= &manifold
[manifold_len
];
2392 int l
= rb_capsule__scene( mtx
, &capsule
, NULL
, &world
->rb_geo
.inf
.scene
,
2396 for( int i
=0; i
<l
; i
++ )
2397 cman
[l
].type
= k_contact_type_edge
;
2398 rb_manifold_filter_joint_edges( cman
, l
, 0.03f
);
2399 l
= rb_manifold_apply_filtered( cman
, l
);
2404 debug_capsule( mtx
, capsule
.radius
, capsule
.height
, VG__WHITE
);
2407 if( s
->state
.activity
>= k_skate_activity_grind_any
){
2408 for( int i
=0; i
<s
->limit_count
; i
++ ){
2409 struct grind_limit
*limit
= &s
->limits
[i
];
2410 rb_ct
*ct
= &manifold
[ manifold_len
++ ];
2411 m4x3_mulv( player
->rb
.to_world
, limit
->ra
, ct
->co
);
2412 m3x3_mulv( player
->rb
.to_world
, limit
->n
, ct
->n
);
2414 ct
->type
= k_contact_type_default
;
2420 * --------------------------------------------------------------------------
2425 m4x3_mulv( player
->rb
.to_world
, s
->weight_distribution
, world_cog
);
2426 vg_line_pt3( world_cog
, 0.02f
, VG__BLACK
);
2428 for( int i
=0; i
<manifold_len
; i
++ ){
2429 rb_prepare_contact( &manifold
[i
], s
->substep_delta
);
2430 rb_debug_contact( &manifold
[i
] );
2433 /* yes, we are currently rebuilding mass matrices every frame. too bad! */
2434 v3f extent
= { k_board_width
, 0.1f
, k_board_length
};
2435 float ex2
= k_board_interia
*extent
[0]*extent
[0],
2436 ey2
= k_board_interia
*extent
[1]*extent
[1],
2437 ez2
= k_board_interia
*extent
[2]*extent
[2];
2439 float mass
= 2.0f
* (extent
[0]*extent
[1]*extent
[2]);
2440 float inv_mass
= 1.0f
/mass
;
2443 I
[0] = ((1.0f
/12.0f
) * mass
* (ey2
+ez2
));
2444 I
[1] = ((1.0f
/12.0f
) * mass
* (ex2
+ez2
));
2445 I
[2] = ((1.0f
/12.0f
) * mass
* (ex2
+ey2
));
2448 m3x3_identity( iI
);
2455 m3x3_mul( iI
, player
->rb
.to_local
, iIw
);
2456 m3x3_mul( player
->rb
.to_world
, iIw
, iIw
);
2458 for( int j
=0; j
<10; j
++ ){
2459 for( int i
=0; i
<manifold_len
; i
++ ){
2461 * regular dance; calculate velocity & total mass, apply impulse.
2464 struct contact
*ct
= &manifold
[i
];
2467 v3_sub( ct
->co
, world_cog
, delta
);
2468 v3_cross( player
->rb
.w
, delta
, rv
);
2469 v3_add( player
->rb
.v
, rv
, rv
);
2472 v3_cross( delta
, ct
->n
, raCn
);
2475 m3x3_mulv( iIw
, raCn
, raCnI
);
2477 float normal_mass
= 1.0f
/ (inv_mass
+ v3_dot(raCn
,raCnI
)),
2478 vn
= v3_dot( rv
, ct
->n
),
2479 lambda
= normal_mass
* ( -vn
);
2481 float temp
= ct
->norm_impulse
;
2482 ct
->norm_impulse
= vg_maxf( temp
+ lambda
, 0.0f
);
2483 lambda
= ct
->norm_impulse
- temp
;
2486 v3_muls( ct
->n
, lambda
, impulse
);
2488 v3_muladds( player
->rb
.v
, impulse
, inv_mass
, player
->rb
.v
);
2489 v3_cross( delta
, impulse
, impulse
);
2490 m3x3_mulv( iIw
, impulse
, impulse
);
2491 v3_add( impulse
, player
->rb
.w
, player
->rb
.w
);
2493 v3_cross( player
->rb
.w
, delta
, rv
);
2494 v3_add( player
->rb
.v
, rv
, rv
);
2495 vn
= v3_dot( rv
, ct
->n
);
2500 rb_depenetrate( manifold
, manifold_len
, dt
);
2501 v3_add( dt
, player
->rb
.co
, player
->rb
.co
);
2502 rb_update_transform( &player
->rb
);
2506 if( s
->substep
>= 0.0001f
)
2507 goto begin_collision
; /* again! */
2510 * End of collision and dynamics routine
2511 * --------------------------------------------------------------------------
2514 s
->surface
= k_surface_prop_concrete
;
2516 for( int i
=0; i
<manifold_len
; i
++ ){
2517 rb_ct
*ct
= &manifold
[i
];
2518 struct world_surface
*surf
= world_contact_surface( world
, ct
);
2520 if( surf
->info
.surface_prop
> s
->surface
)
2521 s
->surface
= surf
->info
.surface_prop
;
2524 for( int i
=0; i
<k_wheel_count
; i
++ ){
2526 m3x3_copy( player
->rb
.to_world
, mtx
);
2527 m4x3_mulv( player
->rb
.to_world
, wheels
[i
].pos
, mtx
[3] );
2528 debug_sphere( mtx
, wheels
[i
].radius
,
2529 (u32
[]){ VG__WHITE
, VG__BLACK
,
2530 wheels
[i
].colour
}[ wheels
[i
].state
]);
2533 skate_integrate( player
);
2534 vg_line_pt3( s
->state
.cog
, 0.02f
, VG__WHITE
);
2537 world_intersect_gates(world
, player
->rb
.co
, s
->state
.prev_pos
);
2540 m4x3_mulv( gate
->transport
, player
->rb
.co
, player
->rb
.co
);
2541 m3x3_mulv( gate
->transport
, player
->rb
.v
, player
->rb
.v
);
2542 m4x3_mulv( gate
->transport
, s
->state
.cog
, s
->state
.cog
);
2543 m3x3_mulv( gate
->transport
, s
->state
.cog_v
, s
->state
.cog_v
);
2544 m3x3_mulv( gate
->transport
, s
->state
.throw_v
, s
->state
.throw_v
);
2545 m3x3_mulv( gate
->transport
, s
->state
.head_position
,
2546 s
->state
.head_position
);
2547 m3x3_mulv( gate
->transport
, s
->state
.up_dir
, s
->state
.up_dir
);
2549 v4f transport_rotation
;
2550 m3x3_q( gate
->transport
, transport_rotation
);
2551 q_mul( transport_rotation
, player
->rb
.q
, player
->rb
.q
);
2552 q_mul( transport_rotation
, s
->state
.smoothed_rotation
,
2553 s
->state
.smoothed_rotation
);
2554 rb_update_transform( &player
->rb
);
2556 s
->state_gate_storage
= s
->state
;
2557 player__pass_gate( player
, gate
);
2560 /* FIXME: Rate limit */
2561 static int stick_frames
= 0;
2563 if( s
->state
.activity
>= k_skate_activity_ground
)
2568 if( stick_frames
> 5 ) stick_frames
= 5;
2570 if( stick_frames
== 4 ){
2573 if( s
->state
.activity
== k_skate_activity_ground
){
2574 if( (fabsf(s
->state
.slip
) > 0.75f
) ){
2575 audio_oneshot_3d( &audio_lands
[rand()%2+3], player
->rb
.co
,
2579 audio_oneshot_3d( &audio_lands
[rand()%3], player
->rb
.co
,
2583 else if( s
->surface
== k_surface_prop_metal
){
2584 audio_oneshot_3d( &audio_board
[3], player
->rb
.co
, 40.0f
, 1.0f
);
2587 audio_oneshot_3d( &audio_board
[8], player
->rb
.co
, 40.0f
, 1.0f
);
2591 } else if( stick_frames
== 0 ){
2596 VG_STATIC
void player__skate_im_gui( player_instance
*player
)
2598 struct player_skate
*s
= &player
->_skate
;
2599 player__debugtext( 1, "V: %5.2f %5.2f %5.2f",player
->rb
.v
[0],
2602 player__debugtext( 1, "CO: %5.2f %5.2f %5.2f",player
->rb
.co
[0],
2605 player__debugtext( 1, "W: %5.2f %5.2f %5.2f",player
->rb
.w
[0],
2609 const char *activity_txt
[] =
2614 "undefined (INVALID)",
2615 "grind_any (INVALID)",
2617 "grind_metallic (INVALID)",
2623 player__debugtext( 1, "activity: %s", activity_txt
[s
->state
.activity
] );
2625 player__debugtext( 1, "steer_s: %5.2f %5.2f [%.2f %.2f]",
2626 s
->state
.steerx_s
, s
->state
.steery_s
,
2627 k_steer_ground
, k_steer_air
);
2629 player__debugtext( 1, "flip: %.4f %.4f", s
->state
.flip_rate
,
2630 s
->state
.flip_time
);
2631 player__debugtext( 1, "trickv: %.2f %.2f %.2f",
2632 s
->state
.trick_vel
[0],
2633 s
->state
.trick_vel
[1],
2634 s
->state
.trick_vel
[2] );
2635 player__debugtext( 1, "tricke: %.2f %.2f %.2f",
2636 s
->state
.trick_euler
[0],
2637 s
->state
.trick_euler
[1],
2638 s
->state
.trick_euler
[2] );
2641 VG_STATIC
void player__skate_animate( player_instance
*player
,
2642 player_animation
*dest
)
2644 struct player_skate
*s
= &player
->_skate
;
2645 struct player_avatar
*av
= player
->playeravatar
;
2646 struct skeleton
*sk
= &av
->sk
;
2649 float kheight
= 2.0f
,
2655 v3f cog_local
, cog_ideal
;
2656 m4x3_mulv( player
->rb
.to_local
, s
->state
.cog
, cog_local
);
2658 v3_copy( s
->state
.up_dir
, cog_ideal
);
2659 v3_normalize( cog_ideal
);
2660 m3x3_mulv( player
->rb
.to_local
, cog_ideal
, cog_ideal
);
2662 v3_sub( cog_ideal
, cog_local
, offset
);
2665 v3_muls( offset
, 4.0f
, offset
);
2668 float curspeed
= v3_length( player
->rb
.v
),
2669 kickspeed
= vg_clampf( curspeed
*(1.0f
/40.0f
), 0.0f
, 1.0f
),
2670 kicks
= (vg_randf()-0.5f
)*2.0f
*kickspeed
,
2671 sign
= vg_signf( kicks
);
2673 s
->wobble
[0] = vg_lerpf( s
->wobble
[0], kicks
*kicks
*sign
, 6.0f
*vg
.time_delta
);
2674 s
->wobble
[1] = vg_lerpf( s
->wobble
[1], s
->wobble
[0], 2.4f
*vg
.time_delta
);
2677 offset
[0] += s
->wobble
[1]*3.0f
;
2682 offset
[0]=vg_clampf(offset
[0],-0.8f
,0.8f
)*(1.0f
-fabsf(s
->blend_slide
)*0.9f
);
2683 offset
[1]=vg_clampf(offset
[1],-0.5f
,0.0f
);
2685 v3_muls( offset
, 0.3f
, TEMP_TPV_EXTRA
);
2688 * Animation blending
2689 * ===========================================
2694 float desired
= 0.0f
;
2695 if( s
->state
.activity
== k_skate_activity_ground
)
2696 desired
= vg_clampf( fabsf( s
->state
.slip
), 0.0f
, 1.0f
);
2698 s
->blend_slide
= vg_lerpf( s
->blend_slide
, desired
, 2.4f
*vg
.time_delta
);
2701 /* movement information */
2703 int iair
= s
->state
.activity
<= k_skate_activity_air_to_grind
;
2705 float dirz
= s
->state
.reverse
> 0.0f
? 0.0f
: 1.0f
,
2706 dirx
= s
->state
.slip
< 0.0f
? 0.0f
: 1.0f
,
2707 fly
= iair
? 1.0f
: 0.0f
,
2708 wdist
= s
->weight_distribution
[2] / k_board_length
;
2710 if( s
->state
.activity
>= k_skate_activity_grind_any
)
2713 s
->blend_z
= vg_lerpf( s
->blend_z
, dirz
, 2.4f
*vg
.time_delta
);
2714 s
->blend_x
= vg_lerpf( s
->blend_x
, dirx
, 0.6f
*vg
.time_delta
);
2715 s
->blend_fly
= vg_lerpf( s
->blend_fly
, fly
, 3.4f
*vg
.time_delta
);
2716 s
->blend_weight
= vg_lerpf( s
->blend_weight
, wdist
, 9.0f
*vg
.time_delta
);
2719 mdl_keyframe apose
[32], bpose
[32];
2720 mdl_keyframe ground_pose
[32];
2722 /* when the player is moving fast he will crouch down a little bit */
2723 float stand
= 1.0f
- vg_clampf( curspeed
* 0.03f
, 0.0f
, 1.0f
);
2724 s
->blend_stand
= vg_lerpf( s
->blend_stand
, stand
, 6.0f
*vg
.time_delta
);
2727 float dir_frame
= s
->blend_z
* (15.0f
/30.0f
),
2728 stand_blend
= offset
[1]*-2.0f
;
2731 m4x3_mulv( player
->rb
.to_local
, s
->state
.cog
, local_cog
);
2733 stand_blend
= vg_clampf( 1.0f
-local_cog
[1], 0, 1 );
2735 skeleton_sample_anim( sk
, s
->anim_stand
, dir_frame
, apose
);
2736 skeleton_sample_anim( sk
, s
->anim_highg
, dir_frame
, bpose
);
2737 skeleton_lerp_pose( sk
, apose
, bpose
, stand_blend
, apose
);
2740 float slide_frame
= s
->blend_x
* (15.0f
/30.0f
);
2741 skeleton_sample_anim( sk
, s
->anim_slide
, slide_frame
, bpose
);
2742 skeleton_lerp_pose( sk
, apose
, bpose
, s
->blend_slide
, apose
);
2745 double push_time
= vg
.time
- s
->state
.start_push
;
2746 s
->blend_push
= vg_lerpf( s
->blend_push
,
2747 (vg
.time
- s
->state
.cur_push
) < 0.125,
2748 6.0f
*vg
.time_delta
);
2750 if( s
->state
.reverse
> 0.0f
)
2751 skeleton_sample_anim( sk
, s
->anim_push
, push_time
, bpose
);
2753 skeleton_sample_anim( sk
, s
->anim_push_reverse
, push_time
, bpose
);
2755 skeleton_lerp_pose( sk
, apose
, bpose
, s
->blend_push
, apose
);
2758 float jump_start_frame
= 14.0f
/30.0f
;
2760 float charge
= s
->state
.jump_charge
;
2761 s
->blend_jump
= vg_lerpf( s
->blend_jump
, charge
, 8.4f
*vg
.time_delta
);
2763 float setup_frame
= charge
* jump_start_frame
,
2764 setup_blend
= vg_minf( s
->blend_jump
, 1.0f
);
2766 float jump_frame
= (vg
.time
- s
->state
.jump_time
) + jump_start_frame
;
2767 if( jump_frame
>= jump_start_frame
&& jump_frame
<= (40.0f
/30.0f
) )
2768 setup_frame
= jump_frame
;
2770 struct skeleton_anim
*jump_anim
= s
->state
.jump_dir
?
2772 s
->anim_ollie_reverse
;
2774 skeleton_sample_anim_clamped( sk
, jump_anim
, setup_frame
, bpose
);
2775 skeleton_lerp_pose( sk
, apose
, bpose
, setup_blend
, ground_pose
);
2778 mdl_keyframe air_pose
[32];
2781 joystick_state( k_srjoystick_steer
, steer
);
2783 float target
= -steer
[1];
2785 s
->blend_airdir
= vg_lerpf( s
->blend_airdir
, target
, 2.4f
*vg
.time_delta
);
2787 float air_frame
= (s
->blend_airdir
*0.5f
+0.5f
) * (15.0f
/30.0f
);
2788 skeleton_sample_anim( sk
, s
->anim_air
, air_frame
, apose
);
2790 static v2f grab_choice
;
2793 joystick_state( k_srjoystick_grab
, grab_input
);
2794 v2_add( s
->state
.grab_mouse_delta
, grab_input
, grab_input
);
2796 if( v2_length2( grab_input
) <= 0.001f
)
2797 grab_input
[0] = -1.0f
;
2799 v2_normalize_clamp( grab_input
);
2800 v2_lerp( grab_choice
, grab_input
, 2.4f
*vg
.time_delta
, grab_choice
);
2802 float ang
= atan2f( grab_choice
[0], grab_choice
[1] ),
2803 ang_unit
= (ang
+VG_PIf
) * (1.0f
/VG_TAUf
),
2804 grab_frame
= ang_unit
* (15.0f
/30.0f
);
2806 skeleton_sample_anim( sk
, s
->anim_grabs
, grab_frame
, bpose
);
2807 skeleton_lerp_pose( sk
, apose
, bpose
, s
->state
.grabbing
, air_pose
);
2810 skeleton_lerp_pose( sk
, ground_pose
, air_pose
, s
->blend_fly
, dest
->pose
);
2813 mdl_keyframe
*kf_board
= &dest
->pose
[av
->id_board
-1],
2814 *kf_foot_l
= &dest
->pose
[av
->id_ik_foot_l
-1],
2815 *kf_foot_r
= &dest
->pose
[av
->id_ik_foot_r
-1],
2816 *kf_knee_l
= &dest
->pose
[av
->id_ik_knee_l
-1],
2817 *kf_knee_r
= &dest
->pose
[av
->id_ik_knee_r
-1],
2818 *kf_hip
= &dest
->pose
[av
->id_hip
-1],
2819 *kf_wheels
[] = { &dest
->pose
[av
->id_wheel_r
-1],
2820 &dest
->pose
[av
->id_wheel_l
-1] };
2823 mdl_keyframe grind_pose
[32];
2825 float grind_frame
= 0.5f
;
2827 if( s
->state
.activity
== k_skate_activity_grind_front50
){
2829 } else if( s
->state
.activity
== k_skate_activity_grind_back50
){
2833 float grind
=s
->state
.activity
>= k_skate_activity_grind_any
? 1.0f
: 0.0f
;
2834 s
->blend_grind
= vg_lerpf( s
->blend_grind
, grind
, 5.0f
*vg
.time_delta
);
2835 s
->blend_grind_balance
=vg_lerpf( s
->blend_grind_balance
,
2836 grind_frame
, 5.0f
*vg
.time_delta
);
2838 grind_frame
= s
->blend_grind_balance
* (15.0f
/30.0f
);
2840 skeleton_sample_anim( sk
, s
->anim_grind
, grind_frame
, apose
);
2841 skeleton_sample_anim( sk
, s
->anim_grind_jump
, grind_frame
, bpose
);
2842 skeleton_lerp_pose( sk
, apose
, bpose
, s
->blend_jump
, grind_pose
);
2844 skeleton_lerp_pose( sk
, dest
->pose
, grind_pose
, s
->blend_grind
, dest
->pose
);
2846 float add_grab_mod
= 1.0f
- s
->blend_fly
;
2848 /* additive effects */
2850 u32 apply_to
[] = { av
->id_hip
,
2854 av
->id_ik_elbow_r
};
2856 float apply_rates
[] = { 1.0f
,
2862 for( int i
=0; i
<vg_list_size(apply_to
); i
++ ){
2863 dest
->pose
[apply_to
[i
]-1].co
[0] += offset
[0]*add_grab_mod
;
2864 dest
->pose
[apply_to
[i
]-1].co
[2] += offset
[2]*add_grab_mod
;
2867 /* angle correction */
2868 if( v3_length2( s
->state
.up_dir
) > 0.001f
){
2870 if( v4_length(s
->state
.smoothed_rotation
) <= 0.1f
||
2871 v4_length(s
->state
.smoothed_rotation
) >= 1.1f
){
2872 vg_warn( "FIX THIS! CARROT\n" );
2873 v4_copy( player
->rb
.q
, s
->state
.smoothed_rotation
);
2875 v4_lerp( s
->state
.smoothed_rotation
, player
->rb
.q
,
2876 2.0f
*vg
.time_frame_delta
,
2877 s
->state
.smoothed_rotation
);
2878 q_normalize( s
->state
.smoothed_rotation
);
2880 v3f yaw_ref
= {1.0f
,0.0f
,0.0f
},
2881 yaw_smooth
= {1.0f
,0.0f
,0.0f
};
2882 q_mulv( player
->rb
.q
, yaw_ref
, yaw_ref
);
2883 q_mulv( s
->state
.smoothed_rotation
, yaw_smooth
, yaw_smooth
);
2884 m3x3_mulv( player
->rb
.to_local
, yaw_smooth
, yaw_smooth
);
2885 m3x3_mulv( player
->rb
.to_local
, yaw_ref
, yaw_ref
);
2887 float yaw_counter_rotate
= v3_dot(yaw_ref
,yaw_smooth
);
2888 yaw_counter_rotate
= vg_clampf(yaw_counter_rotate
,-1.0f
,1.0f
);
2889 yaw_counter_rotate
= acosf( yaw_counter_rotate
);
2890 yaw_counter_rotate
*= 1.0f
-s
->blend_fly
;
2893 m3x3_mulv( player
->rb
.to_local
, s
->state
.up_dir
, ndir
);
2894 v3_normalize( ndir
);
2896 v3f up
= { 0.0f
, 1.0f
, 0.0f
};
2898 float a
= v3_dot( ndir
, up
);
2899 a
= acosf( vg_clampf( a
, -1.0f
, 1.0f
) );
2902 v4f qfixup
, qcounteryaw
, qtotal
;
2904 v3_cross( up
, ndir
, axis
);
2905 q_axis_angle( qfixup
, axis
, a
);
2907 q_axis_angle( qcounteryaw
, (v3f
){0.0f
,1.0f
,0.0f
}, yaw_counter_rotate
);
2908 q_mul( qcounteryaw
, qfixup
, qtotal
);
2909 q_normalize( qtotal
);
2911 mdl_keyframe
*kf_hip
= &dest
->pose
[av
->id_hip
-1];
2913 v3_add( av
->sk
.bones
[av
->id_hip
].co
, kf_hip
->co
, origin
);
2915 for( int i
=0; i
<vg_list_size(apply_to
); i
++ ){
2916 mdl_keyframe
*kf
= &dest
->pose
[apply_to
[i
]-1];
2918 keyframe_rotate_around( kf
, origin
, av
->sk
.bones
[apply_to
[i
]].co
,
2923 m3x3_mulv( player
->rb
.to_world
, up
, p1
);
2924 m3x3_mulv( player
->rb
.to_world
, ndir
, p2
);
2926 vg_line_arrow( player
->rb
.co
, p1
, 0.25f
, VG__PINK
);
2927 vg_line_arrow( player
->rb
.co
, p2
, 0.25f
, VG__PINK
);
2932 v4f qtrickr
, qyawr
, qpitchr
, qrollr
;
2935 v3_muls( s
->board_trick_residuald
, VG_TAUf
, eulerr
);
2937 q_axis_angle( qyawr
, (v3f
){0.0f
,1.0f
,0.0f
}, eulerr
[0] * 0.5f
);
2938 q_axis_angle( qpitchr
, (v3f
){1.0f
,0.0f
,0.0f
}, eulerr
[1] );
2939 q_axis_angle( qrollr
, (v3f
){0.0f
,0.0f
,1.0f
}, eulerr
[2] );
2941 q_mul( qpitchr
, qrollr
, qtrickr
);
2942 q_mul( qyawr
, qtrickr
, qtotal
);
2943 q_normalize( qtotal
);
2945 q_mul( qtotal
, kf_board
->q
, kf_board
->q
);
2948 /* trick rotation */
2949 v4f qtrick
, qyaw
, qpitch
, qroll
;
2951 v3_muls( s
->state
.trick_euler
, VG_TAUf
, euler
);
2953 float jump_t
= vg
.time
-s
->state
.jump_time
;
2957 float extra
= h
*exp(1.0-h
) * (s
->state
.jump_dir
?1.0f
:-1.0f
);
2958 extra
*= s
->state
.slap
* 4.0f
;
2960 q_axis_angle( qyaw
, (v3f
){0.0f
,1.0f
,0.0f
}, euler
[0] * 0.5f
);
2961 q_axis_angle( qpitch
, (v3f
){1.0f
,0.0f
,0.0f
}, euler
[1] + extra
);
2962 q_axis_angle( qroll
, (v3f
){0.0f
,0.0f
,1.0f
}, euler
[2] );
2964 q_mul( qyaw
, qroll
, qtrick
);
2965 q_mul( qpitch
, qtrick
, qtrick
);
2966 q_mul( kf_board
->q
, qtrick
, kf_board
->q
);
2967 q_normalize( kf_board
->q
);
2969 struct player_board
*board
= player
->board
;
2972 /* foot weight distribution */
2973 if( s
->blend_weight
> 0.0f
){
2975 vg_lerpf( kf_foot_l
->co
[2],
2976 board
->truck_positions
[k_board_truck_back
][2]+0.3f
,
2977 0.5f
*s
->blend_weight
);
2981 vg_lerpf( kf_foot_r
->co
[2],
2982 board
->truck_positions
[k_board_truck_front
][2]-0.3f
,
2983 -0.5f
*s
->blend_weight
);
2987 float slapm
= vg_maxf( 1.0f
-v3_length2( s
->state
.trick_vel
), 0.0f
);
2988 s
->subslap
= vg_lerpf( s
->subslap
, slapm
, vg
.time_delta
*10.0f
);
2990 kf_foot_l
->co
[1] += s
->state
.slap
;
2991 kf_foot_r
->co
[1] += s
->state
.slap
;
2992 kf_knee_l
->co
[1] += s
->state
.slap
;
2993 kf_knee_r
->co
[1] += s
->state
.slap
;
2994 kf_board
->co
[1] += s
->state
.slap
* s
->subslap
;
2995 kf_hip
->co
[1] += s
->state
.slap
* 0.25f
;
2998 * animation wishlist:
2999 * boardslide/grind jump animations
3000 * when tricking the slap should not appply or less apply
3001 * not animations however DONT target grinds that are vertically down.
3004 /* truck rotation */
3005 for( int i
=0; i
<2; i
++ )
3007 float a
= vg_minf( s
->truckv0
[i
][0], 1.0f
);
3008 a
= -acosf( a
) * vg_signf( s
->truckv0
[i
][1] );
3011 q_axis_angle( q
, (v3f
){0.0f
,0.0f
,1.0f
}, a
);
3012 q_mul( q
, kf_wheels
[i
]->q
, kf_wheels
[i
]->q
);
3013 q_normalize( kf_wheels
[i
]->q
);
3019 *kf_head
= &dest
->pose
[av
->id_head
-1],
3020 *kf_elbow_l
= &dest
->pose
[av
->id_ik_elbow_l
-1],
3021 *kf_elbow_r
= &dest
->pose
[av
->id_ik_elbow_r
-1],
3022 *kf_hand_l
= &dest
->pose
[av
->id_ik_hand_l
-1],
3023 *kf_hand_r
= &dest
->pose
[av
->id_ik_hand_r
-1];
3025 float warble
= perlin1d( vg
.time
, 2.0f
, 2, 300 );
3026 warble
*= vg_maxf(s
->blend_grind
,fabsf(s
->blend_weight
)) * 0.3f
;
3029 q_axis_angle( qrot
, (v3f
){0.8f
,0.7f
,0.6f
}, warble
);
3031 v3f origin
= {0.0f
,0.2f
,0.0f
};
3032 keyframe_rotate_around( kf_hand_l
, origin
,
3033 av
->sk
.bones
[av
->id_ik_hand_l
].co
, qrot
);
3034 keyframe_rotate_around( kf_hand_r
, origin
,
3035 av
->sk
.bones
[av
->id_ik_hand_r
].co
, qrot
);
3036 keyframe_rotate_around( kf_hip
, origin
,
3037 av
->sk
.bones
[av
->id_hip
].co
, qrot
);
3038 keyframe_rotate_around( kf_elbow_r
, origin
,
3039 av
->sk
.bones
[av
->id_ik_elbow_r
].co
, qrot
);
3040 keyframe_rotate_around( kf_elbow_l
, origin
,
3041 av
->sk
.bones
[av
->id_ik_elbow_l
].co
, qrot
);
3043 q_inv( qrot
, qrot
);
3044 q_mul( qrot
, kf_head
->q
, kf_head
->q
);
3045 q_normalize( kf_head
->q
);
3049 rb_extrapolate( &player
->rb
, dest
->root_co
, dest
->root_q
);
3052 q_mulv( dest
->root_q
, (v3f
){0.0f
,1.0f
,0.0f
}, ext_up
);
3053 v3_copy( dest
->root_co
, ext_co
);
3054 v3_muladds( dest
->root_co
, ext_up
, -0.1f
, dest
->root_co
);
3057 if( (s
->state
.activity
<= k_skate_activity_air_to_grind
) &&
3058 (fabsf(s
->state
.flip_rate
) > 0.01f
) )
3060 float substep
= vg
.time_fixed_extrapolate
;
3061 float t
= s
->state
.flip_time
+s
->state
.flip_rate
*substep
*k_rb_delta
;
3062 sign
= vg_signf( t
);
3064 t
= 1.0f
- vg_minf( 1.0f
, fabsf( t
* 1.1f
) );
3065 t
= sign
* (1.0f
-t
*t
);
3067 float angle
= vg_clampf( t
, -1.0f
, 1.0f
) * VG_TAUf
,
3068 distm
= s
->land_dist
* fabsf(s
->state
.flip_rate
) * 3.0f
,
3069 blend
= vg_clampf( 1.0f
-distm
, 0.0f
, 1.0f
);
3071 angle
= vg_lerpf( angle
, vg_signf(s
->state
.flip_rate
) * VG_TAUf
, blend
);
3073 q_axis_angle( qflip
, s
->state
.flip_axis
, angle
);
3074 q_mul( qflip
, dest
->root_q
, dest
->root_q
);
3075 q_normalize( dest
->root_q
);
3077 v3f rotation_point
, rco
;
3078 v3_muladds( ext_co
, ext_up
, 0.5f
, rotation_point
);
3079 v3_sub( dest
->root_co
, rotation_point
, rco
);
3081 q_mulv( qflip
, rco
, rco
);
3082 v3_add( rco
, rotation_point
, dest
->root_co
);
3085 skeleton_copy_pose( sk
, dest
->pose
, s
->holdout
);
3088 VG_STATIC
void player__skate_post_animate( player_instance
*player
)
3090 struct player_skate
*s
= &player
->_skate
;
3091 struct player_avatar
*av
= player
->playeravatar
;
3093 player
->cam_velocity_influence
= 1.0f
;
3095 v3f head
= { 0.0f
, 1.8f
, 0.0f
};
3096 m4x3_mulv( av
->sk
.final_mtx
[ av
->id_head
], head
, s
->state
.head_position
);
3097 m4x3_mulv( player
->rb
.to_local
, s
->state
.head_position
,
3098 s
->state
.head_position
);
3100 /* TODO: Extrapolate to_local matrix? */
3103 VG_STATIC
void player__skate_reset_animator( player_instance
*player
)
3105 struct player_skate
*s
= &player
->_skate
;
3107 if( s
->state
.activity
<= k_skate_activity_air_to_grind
)
3108 s
->blend_fly
= 1.0f
;
3110 s
->blend_fly
= 0.0f
;
3112 s
->blend_slide
= 0.0f
;
3115 s
->blend_grind
= 0.0f
;
3116 s
->blend_grind_balance
= 0.0f
;
3117 s
->blend_stand
= 0.0f
;
3118 s
->blend_push
= 0.0f
;
3119 s
->blend_jump
= 0.0f
;
3120 s
->blend_airdir
= 0.0f
;
3121 s
->blend_weight
= 0.0f
;
3123 v2_zero( s
->wobble
);
3125 v3_zero( s
->board_trick_residuald
);
3126 v3_zero( s
->board_trick_residualv
);
3127 v3_zero( s
->truckv0
[0] );
3128 v3_zero( s
->truckv0
[1] );
3131 VG_STATIC
void player__skate_clear_mechanics( player_instance
*player
)
3133 struct player_skate
*s
= &player
->_skate
;
3134 s
->state
.jump_charge
= 0.0f
;
3135 s
->state
.charging_jump
= 0;
3136 s
->state
.jump_dir
= 0;
3137 v3_zero( s
->state
.flip_axis
);
3138 s
->state
.flip_time
= 0.0f
;
3139 s
->state
.flip_rate
= 0.0f
;
3140 s
->state
.reverse
= 0.0f
;
3141 s
->state
.slip
= 0.0f
;
3142 s
->state
.grabbing
= 0.0f
;
3143 v2_zero( s
->state
.grab_mouse_delta
);
3144 s
->state
.slap
= 0.0f
;
3145 s
->state
.jump_time
= 0.0;
3146 s
->state
.start_push
= 0.0;
3147 s
->state
.cur_push
= 0.0;
3148 s
->state
.air_start
= 0.0;
3150 v3_zero( s
->state
.air_init_v
);
3151 v3_zero( s
->state
.air_init_co
);
3153 s
->state
.gravity_bias
= k_gravity
;
3154 v3_copy( player
->rb
.co
, s
->state
.prev_pos
);
3155 v4_copy( player
->rb
.q
, s
->state
.smoothed_rotation
);
3156 v3_zero( s
->state
.throw_v
);
3157 v3_zero( s
->state
.trick_vel
);
3158 v3_zero( s
->state
.trick_euler
);
3159 v3_zero( s
->state
.cog_v
);
3160 s
->grind_cooldown
= 0;
3161 s
->surface_cooldown
= 0;
3162 v3_muladds( player
->rb
.co
, player
->rb
.to_world
[1], 1.0f
, s
->state
.cog
);
3163 v3_copy( player
->rb
.to_world
[1], s
->state
.up_dir
);
3164 v3_copy( player
->rb
.to_world
[1], s
->surface_picture
);
3165 v3_zero( s
->weight_distribution
);
3166 v3_copy( player
->rb
.co
, s
->state
.prev_pos
);
3169 VG_STATIC
void player__skate_reset( player_instance
*player
,
3172 struct player_skate
*s
= &player
->_skate
;
3173 v3_zero( player
->rb
.v
);
3174 v4_copy( rp
->transform
.q
, player
->rb
.q
);
3176 s
->state
.activity
= k_skate_activity_air
;
3177 s
->state
.activity_prev
= k_skate_activity_air
;
3179 player__skate_clear_mechanics( player
);
3180 player__skate_reset_animator( player
);
3182 v3_zero( s
->state
.head_position
);
3183 s
->state
.head_position
[1] = 1.8f
;
3186 VG_STATIC
void player__skate_restore( player_instance
*player
)
3188 struct player_skate
*s
= &player
->_skate
;
3189 s
->state
= s
->state_gate_storage
;
3192 #endif /* PLAYER_SKATE_C */