player_animation.h

   1 /*
   2  * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved
   3  */
   4
   5 #ifndef PLAYER_ANIMATION_H
   6 #define PLAYER_ANIMATION_H
   7
   8 #include "player.h"
   9
  10 VG_STATIC void player_animate_offboard(void)
  11 {
  12    {
  13       float fly = player.phys.in_air,
  14             rate;
  15
  16       if( player.phys.in_air )
  17          rate = 2.4f;
  18       else
  19          rate = 9.0f;
  20
  21       player.ffly  = vg_lerpf( player.ffly, fly, rate*vg.time_delta );
  22       player.frun  = vg_lerpf( player.frun,
  23                                player.walk *
  24                                (1.0f + player.input_walk->button.value*0.5f),
  25                                2.0f*vg.time_delta );
  26    }
  27
  28    struct player_phys *phys = &player.phys;
  29
  30    mdl_keyframe apose[32], bpose[32];
  31    struct skeleton *sk = &player.mdl.sk;
  32
  33    if( player.walk > 0.025f )
  34    {
  35       /* TODO move */
  36       float walk_norm = 30.0f/(float)player.mdl.anim_walk->length,
  37             run_norm  = 30.0f/(float)player.mdl.anim_run->length,
  38             walk_adv  = vg_lerpf( walk_norm, run_norm, player.walk );
  39
  40       player.walk_timer += walk_adv * vg.time_delta;
  41    }
  42    else
  43    {
  44       player.walk_timer = 0.0f;
  45    }
  46
  47    float walk_norm = (float)player.mdl.anim_walk->length/30.0f,
  48          run_norm  = (float)player.mdl.anim_run->length/30.0f,
  49          t = player.walk_timer,
  50          l = vg_clampf( player.frun*15.0f, 0.0f, 1.0f ),
  51          idle_walk = vg_clampf( (player.frun-0.1f)/(1.0f-0.1f), 0.0f, 1.0f );
  52
  53    /* walk/run */
  54    skeleton_sample_anim( sk, player.mdl.anim_walk, t*walk_norm, apose );
  55    skeleton_sample_anim( sk, player.mdl.anim_run,  t*run_norm, bpose );
  56
  57    skeleton_lerp_pose( sk, apose, bpose, l, apose );
  58
  59    /* idle */
  60    skeleton_sample_anim( sk, player.mdl.anim_idle, vg.time*0.1f, bpose );
  61    skeleton_lerp_pose( sk, apose, bpose, 1.0f-idle_walk, apose );
  62
  63    /* air */
  64    skeleton_sample_anim( sk, player.mdl.anim_jump, vg.time*0.6f, bpose );
  65    skeleton_lerp_pose( sk, apose, bpose, player.ffly, apose );
  66
  67    skeleton_apply_pose( &player.mdl.sk, apose, k_anim_apply_defer_ik );
  68    skeleton_apply_ik_pass( &player.mdl.sk );
  69    skeleton_apply_pose( &player.mdl.sk, apose, k_anim_apply_deffered_only );
  70
  71    v3_copy( player.mdl.sk.final_mtx[player.mdl.id_head-1][3],
  72                player.mdl.cam_pos );
  73
  74    skeleton_apply_inverses( &player.mdl.sk );
  75
  76    m4x3f mtx;
  77    v4f rot;
  78    q_axis_angle( rot, (v3f){0.0f,1.0f,0.0f}, -player.angles[0] - VG_PIf*0.5f );
  79    q_m3x3( rot, mtx );
  80    v3_copy( player.visual_transform[3], mtx[3] );
  81
  82    skeleton_apply_transform( &player.mdl.sk, mtx );
  83    skeleton_debug( &player.mdl.sk );
  84 }
  85
  86 VG_STATIC void player_animate(void)
  87 {
  88    struct player_phys *phys = &player.phys;
  89    rb_extrapolate_transform( &player.phys.rb, player.visual_transform );
  90    v3_muladds( player.visual_transform[3], phys->rb.up, -0.2f,
  91                player.visual_transform[3] );
  92
  93    v4f qfake_rot;
  94    m3x3f fake_rot;
  95    float substep = vg_clampf( vg.accumulator / VG_TIMESTEP_FIXED, 0.0f, 1.0f );
  96    q_axis_angle( qfake_rot, phys->rb.up, phys->siY*substep );
  97    q_m3x3( qfake_rot, fake_rot );
  98    m3x3_mul( fake_rot, player.visual_transform, player.visual_transform );
  99
 100    m4x3_invert_affine( player.visual_transform, player.inv_visual_transform );
 101
 102    if( !phys->on_board )
 103    {
 104       player_animate_offboard();
 105       return;
 106    }
 107
 108    /* Camera position */
 109    v3_sub( phys->rb.v, phys->v_last, phys->a );
 110    v3_copy( phys->rb.v, phys->v_last );
 111
 112    v3_add( phys->m, phys->a, phys->m );
 113    v3_lerp( phys->m, (v3f){0.0f,0.0f,0.0f}, 0.1f, phys->m );
 114
 115    phys->m[0] = vg_clampf( phys->m[0], -2.0f, 2.0f );
 116    phys->m[1] = vg_clampf( phys->m[1], -2.0f, 2.0f );
 117    phys->m[2] = vg_clampf( phys->m[2], -2.0f, 2.0f );
 118    v3_lerp( phys->bob, phys->m, 0.2f, phys->bob );
 119
 120    /* Head */
 121    float lslip = fabsf(phys->slip);
 122
 123    float kheight = 2.0f,
 124          kleg = 0.6f;
 125
 126    v3f offset;
 127    v3_zero( offset );
 128    m3x3_mulv( player.inv_visual_transform, phys->bob, offset );
 129
 130    static float speed_wobble = 0.0f, speed_wobble_2 = 0.0f;
 131
 132    float kickspeed = vg_clampf(v3_length(phys->rb.v)*(1.0f/40.0f), 0.0f, 1.0f);
 133    float kicks = (vg_randf()-0.5f)*2.0f*kickspeed;
 134    float sign = vg_signf( kicks );
 135    speed_wobble = vg_lerpf( speed_wobble, kicks*kicks*sign, 6.0f*vg.time_delta);
 136    speed_wobble_2 = vg_lerpf( speed_wobble_2, speed_wobble, 2.4f*vg.time_delta);
 137
 138    offset[0] *= 0.26f;
 139    offset[0] += speed_wobble_2*3.0f;
 140
 141    offset[1] *= -0.3f;
 142    offset[2] *= 0.01f;
 143
 144    offset[0]=vg_clampf(offset[0],-0.8f,0.8f)*(1.0f-fabsf(player.fslide)*0.9f);
 145    offset[1]=vg_clampf(offset[1],-0.5f,0.0f);
 146
 147    /*
 148     * Animation blending
 149     * ===========================================
 150     */
 151
 152    /* scalar blending information */
 153    float speed = v3_length( phys->rb.v );
 154
 155    /* sliding */
 156    {
 157       float desired = vg_clampf( lslip, 0.0f, 1.0f );
 158       player.fslide = vg_lerpf( player.fslide, desired, 2.4f*vg.time_delta);
 159    }
 160
 161    /* movement information */
 162    {
 163       float dirz = phys->reverse > 0.0f? 0.0f: 1.0f,
 164             dirx = phys->slip < 0.0f?    0.0f: 1.0f,
 165             fly  = (phys->in_air|phys->grind)?  1.0f: 0.0f;
 166
 167       player.fdirz = vg_lerpf( player.fdirz, dirz, 2.4f*vg.time_delta );
 168       player.fdirx = vg_lerpf( player.fdirx, dirx, 0.6f*vg.time_delta );
 169       player.ffly  = vg_lerpf( player.ffly, fly,   2.4f*vg.time_delta );
 170    }
 171
 172    struct skeleton *sk = &player.mdl.sk;
 173
 174    mdl_keyframe apose[32], bpose[32];
 175    mdl_keyframe ground_pose[32];
 176    {
 177       /* when the player is moving fast he will crouch down a little bit */
 178       float stand = 1.0f - vg_clampf( speed * 0.03f, 0.0f, 1.0f );
 179       player.fstand = vg_lerpf( player.fstand, stand, 6.0f*vg.time_delta );
 180
 181       /* stand/crouch */
 182       float dir_frame   = player.fdirz * (15.0f/30.0f),
 183             stand_blend = offset[1]*-2.0f;
 184
 185       skeleton_sample_anim( sk, player.mdl.anim_stand, dir_frame, apose );
 186       skeleton_sample_anim( sk, player.mdl.anim_highg, dir_frame, bpose );
 187       skeleton_lerp_pose( sk, apose, bpose, stand_blend, apose );
 188
 189       /* sliding */
 190       float slide_frame = player.fdirx * (15.0f/30.0f);
 191       skeleton_sample_anim( sk, player.mdl.anim_slide, slide_frame, bpose );
 192       skeleton_lerp_pose( sk, apose, bpose, player.fslide, apose );
 193
 194       /* pushing */
 195       player.fpush = vg_lerpf( player.fpush,
 196                                player.phys.pushing,
 197                                6.0f*vg.time_delta );
 198
 199       float pt = player.phys.push_time + vg.accumulator;
 200       if( phys->reverse > 0.0f )
 201          skeleton_sample_anim( sk, player.mdl.anim_push, pt, bpose );
 202       else
 203          skeleton_sample_anim( sk, player.mdl.anim_push_reverse, pt, bpose );
 204
 205       skeleton_lerp_pose( sk, apose, bpose, player.fpush, apose );
 206
 207       /* trick setup */
 208       float jump_start_frame = 14.0f/30.0f;
 209
 210       player.fjump = vg_lerpf( player.fjump, phys->jump, 8.4f*vg.time_delta );
 211
 212       float setup_frame = phys->jump * jump_start_frame,
 213             setup_blend = vg_minf( player.fjump, 1.0f );
 214
 215       float jump_frame = (vg.time - player.jump_time) + jump_start_frame;
 216       if( jump_frame >= jump_start_frame && jump_frame <= (40.0f/30.0f) )
 217          setup_frame = jump_frame;
 218
 219       struct skeleton_anim *jump_anim = phys->jump_dir?
 220                                         player.mdl.anim_ollie:
 221                                         player.mdl.anim_ollie_reverse;
 222
 223       skeleton_sample_anim_clamped( sk, jump_anim, setup_frame, bpose );
 224       skeleton_lerp_pose( sk, apose, bpose, setup_blend, ground_pose );
 225    }
 226
 227    mdl_keyframe air_pose[32];
 228    {
 229       float target = -player.input_js1h->axis.value;
 230       player.fairdir = vg_lerpf( player.fairdir, target, 2.4f*vg.time_delta );
 231
 232       float air_frame = (player.fairdir*0.5f+0.5f) * (15.0f/30.0f);
 233
 234       skeleton_sample_anim( sk, player.mdl.anim_air, air_frame, apose );
 235
 236       static v2f grab_choice;
 237
 238       v2f grab_input = { player.input_js2h->axis.value,
 239                          player.input_js2v->axis.value };
 240       v2_add( player.phys.grab_mouse_delta, grab_input, grab_input );
 241       if( v2_length2( grab_input ) <= 0.001f )
 242          grab_input[0] = -1.0f;
 243       else
 244          v2_normalize_clamp( grab_input );
 245       v2_lerp( grab_choice, grab_input, 2.4f*vg.time_delta, grab_choice );
 246
 247       float ang = atan2f( grab_choice[0], grab_choice[1] ),
 248             ang_unit = (ang+VG_PIf) * (1.0f/VG_TAUf),
 249             grab_frame = ang_unit * (15.0f/30.0f);
 250
 251       skeleton_sample_anim( sk, player.mdl.anim_grabs, grab_frame, bpose );
 252       skeleton_lerp_pose( sk, apose, bpose, phys->grab, air_pose );
 253    }
 254
 255    skeleton_lerp_pose( sk, ground_pose, air_pose, player.ffly, apose );
 256
 257    float add_grab_mod = 1.0f - player.ffly;//*phys->grab;
 258
 259    /* additive effects */
 260    {
 261       u32 apply_to[] = { player.mdl.id_hip,
 262                          player.mdl.id_ik_hand_l,
 263                          player.mdl.id_ik_hand_r,
 264                          player.mdl.id_ik_elbow_l,
 265                          player.mdl.id_ik_elbow_r };
 266
 267       for( int i=0; i<vg_list_size(apply_to); i ++ )
 268       {
 269          apose[apply_to[i]-1].co[0] += offset[0]*add_grab_mod;
 270          apose[apply_to[i]-1].co[2] += offset[2]*add_grab_mod;
 271       }
 272    }
 273
 274    skeleton_apply_pose( &player.mdl.sk, apose, k_anim_apply_defer_ik );
 275    skeleton_apply_ik_pass( &player.mdl.sk );
 276    skeleton_apply_pose( &player.mdl.sk, apose, k_anim_apply_deffered_only );
 277
 278    v3_copy( player.mdl.sk.final_mtx[player.mdl.id_head-1][3],
 279                player.mdl.cam_pos );
 280    skeleton_apply_inverses( &player.mdl.sk );
 281    skeleton_apply_transform( &player.mdl.sk, player.visual_transform );
 282
 283    skeleton_debug( &player.mdl.sk );
 284 }
 285
 286 VG_STATIC void player_animate_death_cam(void)
 287 {
 288    v3f delta;
 289    v3f head_pos;
 290    v3_copy( player.mdl.ragdoll[0].rb.co, head_pos );
 291
 292    v3_sub( head_pos, player.camera_pos, delta );
 293    v3_normalize( delta );
 294
 295    v3f follow_pos;
 296    v3_muladds( head_pos, delta, -2.5f, follow_pos );
 297    v3_lerp( player.camera_pos, follow_pos, 0.1f, player.camera_pos );
 298
 299    /*
 300     * Make sure the camera stays above the ground
 301     */
 302    v3f min_height = {0.0f,1.0f,0.0f};
 303
 304    v3f sample;
 305    v3_add( player.camera_pos, min_height, sample );
 306    ray_hit hit;
 307    hit.dist = min_height[1]*2.0f;
 308
 309    if( ray_world( sample, (v3f){0.0f,-1.0f,0.0f}, &hit ))
 310       v3_add( hit.pos, min_height, player.camera_pos );
 311
 312    if( world.water.enabled )
 313    {
 314       player.camera_pos[1] =
 315          vg_maxf( world.water.height + 2.0f, player.camera_pos[1] );
 316    }
 317
 318    player.angles[0] = atan2f( delta[0], -delta[2] );
 319    player.angles[1] = -asinf( delta[1] );
 320 }
 321
 322 VG_STATIC void player_animate_follow_cam( v3f target, float dist, float speed )
 323 {
 324    v3f delta;
 325
 326    v3_sub( target, player.camera_pos, delta );
 327    v3_normalize( delta );
 328
 329    v3f follow_pos;
 330    v3_muladds( target, delta, -dist, follow_pos );
 331    v3_lerp( player.camera_pos, follow_pos,
 332              speed * vg.time_delta, player.camera_pos );
 333
 334    /*
 335     * Make sure the camera stays above the ground
 336     */
 337    v3f min_height = {0.0f,1.0f,0.0f};
 338
 339    v3f sample;
 340    v3_add( player.camera_pos, min_height, sample );
 341    ray_hit hit;
 342    hit.dist = min_height[1]*2.0f;
 343
 344    if( ray_world( sample, (v3f){0.0f,-1.0f,0.0f}, &hit ))
 345       v3_add( hit.pos, min_height, player.camera_pos );
 346
 347 #if 0
 348    if( world.water.enabled )
 349    {
 350       player.camera_pos[1] =
 351          vg_maxf( world.water.height + 2.0f, player.camera_pos[1] );
 352    }
 353 #endif
 354
 355    player.angles[0] = atan2f( delta[0], -delta[2] );
 356    player.angles[1] = -asinf( delta[1] );
 357 }
 358
 359 VG_STATIC void player_animate_camera_thirdperson(void)
 360 {
 361    static v3f lerp_cam = { 0.0f, 0.0f, 0.0f };
 362    v3f target;
 363
 364    v3_muladds( player.phys.rb.co, player.phys.rb.up, 1.2f, target );
 365
 366    player_animate_follow_cam( target, 1.5f, 20.0f );
 367 }
 368
 369 VG_STATIC void player_animate_camera(void)
 370 {
 371    struct player_phys *phys = &player.phys;
 372
 373    static v3f lerp_cam = {0.0f,0.0f,0.0f};
 374    v3f cam_pos;
 375
 376    player.fonboard = vg_lerpf( player.fonboard, phys->on_board, vg.time_delta );
 377
 378    if( phys->on_board )
 379    {
 380       v3f offs = { -0.4f, 0.15f, 0.0f };
 381       v3_lerp( lerp_cam, player.mdl.cam_pos, 0.8f, lerp_cam );
 382       v3_add( lerp_cam, offs, cam_pos );
 383
 384       /* Look angles */
 385       v3_lerp( phys->vl, phys->rb.v, 0.05f, phys->vl );
 386
 387       player.fgrind = vg_lerpf( player.fgrind, phys->grind, vg.time_delta );
 388
 389       float yaw = atan2f(  phys->vl[0], -phys->vl[2] ),
 390           pitch = atan2f
 391                   (
 392                       -phys->vl[1],
 393                       sqrtf
 394                       (
 395                         phys->vl[0]*phys->vl[0] + phys->vl[2]*phys->vl[2]
 396                       )
 397                   )
 398                   * 0.7f + vg_lerpf( 0.30f, 0.90f, player.fgrind );
 399
 400       player.angles[0] = yaw;
 401       player.angles[1] = vg_lerpf( player.angles[1], pitch, player.fonboard );
 402
 403       /* Camera shake */
 404       static v2f shake_damp = {0.0f,0.0f};
 405       v2f shake = { vg_randf()-0.5f, vg_randf()-0.5f };
 406       v2_muls( shake, v3_length(phys->rb.v)*0.3f
 407                            * (1.0f+fabsf(phys->slip)), shake);
 408
 409       v2_lerp( shake_damp, shake, 0.01f, shake_damp );
 410       shake_damp[0] *= 0.2f;
 411
 412       v2_muladds( player.angles, shake_damp, 0.1f, player.angles );
 413       m4x3_mulv( player.visual_transform, cam_pos, player.camera_pos );
 414    }
 415    else
 416    {
 417       float speed = vg.time_delta * k_look_speed;
 418 #if 0
 419       player.angles[0] += vg_get_axis( "lookh" ) * speed;
 420       player.angles[1] += vg_get_axis( "lookv" ) * speed;
 421
 422       player.angles[1] = vg_clampf( player.angles[1],
 423                                        -k_pitch_limit, k_pitch_limit );
 424 #endif
 425
 426       float s =  sinf(player.angles[0]) * 0.2f,
 427             c = -cosf(player.angles[0]) * 0.2f;
 428       v3f forward_dir = { s,0.15f,c };
 429
 430
 431       m4x3f mtx;
 432       v4f rot;
 433       q_axis_angle( rot, (v3f){0.0f,1.0f,0.0f},
 434                               -player.angles[0] -VG_PIf*0.5f );
 435       q_m3x3( rot, mtx );
 436       v3_copy( player.visual_transform[3], mtx[3] );
 437
 438       m4x3_mulv( mtx, player.mdl.cam_pos, cam_pos );
 439       v3_add( cam_pos, forward_dir, player.camera_pos );
 440       v3_lerp( phys->vl, phys->rb.v, 18.0f*vg.time_delta, phys->vl );
 441    }
 442 }
 443
 444 #endif /* PLAYER_ANIMATION_H */