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