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                                vg_get_axis("walk/push")*0.5f+0.5f,
  24                                2.0f*vg.time_delta );
  25    }
  26
  27    struct player_phys *phys = &player.phys;
  28
  29    mdl_keyframe apose[32], bpose[32];
  30    struct skeleton *sk = &player.mdl.sk;
  31
  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
  91    v4f qfake_rot;
  92    m3x3f fake_rot;
  93    float substep = vg_clampf( vg.accumulator / VG_TIMESTEP_FIXED, 0.0f, 1.0f );
  94    q_axis_angle( qfake_rot, phys->rb.up, phys->siY*substep );
  95    q_m3x3( qfake_rot, fake_rot );
  96    m3x3_mul( fake_rot, player.visual_transform, player.visual_transform );
  97
  98    m4x3_invert_affine( player.visual_transform, player.inv_visual_transform );
  99
 100    if( !phys->on_board )
 101    {
 102       player_animate_offboard();
 103       return;
 104    }
 105
 106    /* Camera position */
 107    v3_sub( phys->rb.v, phys->v_last, phys->a );
 108    v3_copy( phys->rb.v, phys->v_last );
 109
 110    v3_add( phys->m, phys->a, phys->m );
 111    v3_lerp( phys->m, (v3f){0.0f,0.0f,0.0f}, 0.1f, phys->m );
 112
 113    phys->m[0] = vg_clampf( phys->m[0], -2.0f, 2.0f );
 114    phys->m[1] = vg_clampf( phys->m[1], -2.0f, 2.0f );
 115    phys->m[2] = vg_clampf( phys->m[2], -2.0f, 2.0f );
 116    v3_lerp( phys->bob, phys->m, 0.2f, phys->bob );
 117
 118    /* Head */
 119    float lslip = fabsf(phys->slip);
 120
 121    float kheight = 2.0f,
 122          kleg = 0.6f;
 123
 124    v3f offset;
 125    v3_zero( offset );
 126    m3x3_mulv( player.inv_visual_transform, phys->bob, offset );
 127
 128    static float speed_wobble = 0.0f, speed_wobble_2 = 0.0f;
 129
 130    float kickspeed = vg_clampf(v3_length(phys->rb.v)*(1.0f/40.0f), 0.0f, 1.0f);
 131    float kicks = (vg_randf()-0.5f)*2.0f*kickspeed;
 132    float sign = vg_signf( kicks );
 133    speed_wobble = vg_lerpf( speed_wobble, kicks*kicks*sign, 6.0f*vg.time_delta);
 134    speed_wobble_2 = vg_lerpf( speed_wobble_2, speed_wobble, 2.4f*vg.time_delta);
 135
 136    offset[0] *= 0.26f;
 137    offset[0] += speed_wobble_2*3.0f;
 138
 139    offset[1] *= -0.3f;
 140    offset[2] *= 0.01f;
 141
 142    offset[0]=vg_clampf(offset[0],-0.8f,0.8f)*(1.0f-fabsf(player.fslide)*0.9f);
 143    offset[1]=vg_clampf(offset[1],-0.5f,0.0f);
 144
 145    /*
 146     * Animation blending
 147     * ===========================================
 148     */
 149
 150    /* scalar blending information */
 151    float speed = v3_length( phys->rb.v );
 152
 153    /* sliding */
 154    {
 155       float desired = vg_clampf( lslip, 0.0f, 1.0f );
 156       player.fslide = vg_lerpf( player.fslide, desired, 2.4f*vg.time_delta);
 157    }
 158
 159    /* movement information */
 160    {
 161       float dirz = phys->reverse > 0.0f? 0.0f: 1.0f,
 162             dirx = phys->slip < 0.0f?    0.0f: 1.0f,
 163             fly  = phys->in_air?         1.0f: 0.0f;
 164
 165       player.fdirz = vg_lerpf( player.fdirz, dirz, 2.4f*vg.time_delta );
 166       player.fdirx = vg_lerpf( player.fdirx, dirx, 0.6f*vg.time_delta );
 167       player.ffly  = vg_lerpf( player.ffly, fly,   2.4f*vg.time_delta );
 168    }
 169
 170    struct skeleton *sk = &player.mdl.sk;
 171
 172    mdl_keyframe apose[32], bpose[32];
 173    mdl_keyframe ground_pose[32];
 174    {
 175       /* when the player is moving fast he will crouch down a little bit */
 176       float stand = 1.0f - vg_clampf( speed * 0.03f, 0.0f, 1.0f );
 177       player.fstand = vg_lerpf( player.fstand, stand, 6.0f*vg.time_delta );
 178
 179       /* stand/crouch */
 180       float dir_frame   = player.fdirz * (15.0f/30.0f),
 181             stand_blend = offset[1]*-2.0f;
 182
 183       skeleton_sample_anim( sk, player.mdl.anim_stand, dir_frame, apose );
 184       skeleton_sample_anim( sk, player.mdl.anim_highg, dir_frame, bpose );
 185       skeleton_lerp_pose( sk, apose, bpose, stand_blend, apose );
 186
 187       /* sliding */
 188       float slide_frame = player.fdirx * (15.0f/30.0f);
 189       skeleton_sample_anim( sk, player.mdl.anim_slide, slide_frame, bpose );
 190       skeleton_lerp_pose( sk, apose, bpose, player.fslide, apose );
 191
 192       /* pushing */
 193       player.fpush = vg_lerpf( player.fpush,
 194                                player.phys.pushing,
 195                                6.0f*vg.time_delta );
 196
 197       float pt = player.phys.push_time + vg.accumulator;
 198       if( phys->reverse > 0.0f )
 199          skeleton_sample_anim( sk, player.mdl.anim_push, pt, bpose );
 200       else
 201          skeleton_sample_anim( sk, player.mdl.anim_push_reverse, pt, bpose );
 202
 203       skeleton_lerp_pose( sk, apose, bpose, player.fpush, apose );
 204
 205       /* trick setup */
 206       float jump_start_frame = 14.0f/30.0f;
 207
 208       player.fjump = vg_lerpf( player.fjump, phys->jump, 8.4f*vg.time_delta );
 209
 210       float setup_frame = phys->jump * jump_start_frame,
 211             setup_blend = vg_minf( player.fjump, 1.0f );
 212
 213       float jump_frame = (vg.time - player.jump_time) + jump_start_frame;
 214       if( jump_frame >= jump_start_frame && jump_frame <= (40.0f/30.0f) )
 215          setup_frame = jump_frame;
 216
 217       struct skeleton_anim *jump_anim = phys->jump_dir?
 218                                         player.mdl.anim_ollie:
 219                                         player.mdl.anim_ollie_reverse;
 220
 221       skeleton_sample_anim_clamped( sk, jump_anim, setup_frame, bpose );
 222       skeleton_lerp_pose( sk, apose, bpose, setup_blend, ground_pose );
 223    }
 224
 225    mdl_keyframe air_pose[32];
 226    {
 227       float target = -vg_get_axis("lookh");
 228       player.fairdir = vg_lerpf( player.fairdir, target, 2.4f*vg.time_delta );
 229
 230       float air_frame = (player.fairdir*0.5f+0.5f) * (15.0f/30.0f);
 231
 232       skeleton_sample_anim( sk, player.mdl.anim_air, air_frame, apose );
 233
 234       static v2f grab_choice;
 235       v2_lerp( grab_choice, (v2f){vg_get_axis("grabh"), vg_get_axis("grabv")},
 236                             0.04f, grab_choice );
 237
 238       float ang = atan2f( grab_choice[0], grab_choice[1] ),
 239             ang_unit = (ang+VG_PIf) * (1.0f/VG_TAUf),
 240             grab_frame = ang_unit * (15.0f/30.0f);
 241
 242       skeleton_sample_anim( sk, player.mdl.anim_grabs, grab_frame, bpose );
 243       skeleton_lerp_pose( sk, apose, bpose, phys->grab, air_pose );
 244    }
 245
 246    skeleton_lerp_pose( sk, ground_pose, air_pose, player.ffly, apose );
 247
 248    float add_grab_mod = 1.0f - player.ffly;//*phys->grab;
 249
 250    /* additive effects */
 251    {
 252       u32 apply_to[] = { player.mdl.id_hip,
 253                          player.mdl.id_ik_hand_l,
 254                          player.mdl.id_ik_hand_r,
 255                          player.mdl.id_ik_elbow_l,
 256                          player.mdl.id_ik_elbow_r };
 257
 258       for( int i=0; i<vg_list_size(apply_to); i ++ )
 259       {
 260          apose[apply_to[i]-1].co[0] += offset[0]*add_grab_mod;
 261          apose[apply_to[i]-1].co[2] += offset[2]*add_grab_mod;
 262       }
 263    }
 264
 265    skeleton_apply_pose( &player.mdl.sk, apose, k_anim_apply_defer_ik );
 266    skeleton_apply_ik_pass( &player.mdl.sk );
 267    skeleton_apply_pose( &player.mdl.sk, apose, k_anim_apply_deffered_only );
 268
 269    v3_copy( player.mdl.sk.final_mtx[player.mdl.id_head-1][3],
 270                player.mdl.cam_pos );
 271    skeleton_apply_inverses( &player.mdl.sk );
 272    skeleton_apply_transform( &player.mdl.sk, player.visual_transform );
 273
 274    skeleton_debug( &player.mdl.sk );
 275 }
 276
 277 VG_STATIC void player_animate_death_cam(void)
 278 {
 279    v3f delta;
 280    v3f head_pos;
 281    v3_copy( player.mdl.ragdoll[0].rb.co, head_pos );
 282
 283    v3_sub( head_pos, player.camera_pos, delta );
 284    v3_normalize( delta );
 285
 286    v3f follow_pos;
 287    v3_muladds( head_pos, delta, -2.5f, follow_pos );
 288    v3_lerp( player.camera_pos, follow_pos, 0.1f, player.camera_pos );
 289
 290    /*
 291     * Make sure the camera stays above the ground
 292     */
 293    v3f min_height = {0.0f,1.0f,0.0f};
 294
 295    v3f sample;
 296    v3_add( player.camera_pos, min_height, sample );
 297    ray_hit hit;
 298    hit.dist = min_height[1]*2.0f;
 299
 300    if( ray_world( sample, (v3f){0.0f,-1.0f,0.0f}, &hit ))
 301       v3_add( hit.pos, min_height, player.camera_pos );
 302
 303    if( world.water.enabled )
 304    {
 305       player.camera_pos[1] =
 306          vg_maxf( world.water.height + 2.0f, player.camera_pos[1] );
 307    }
 308
 309    player.angles[0] = atan2f( delta[0], -delta[2] );
 310    player.angles[1] = -asinf( delta[1] );
 311 }
 312
 313 VG_STATIC void player_animate_camera(void)
 314 {
 315    struct player_phys *phys = &player.phys;
 316
 317    static v3f lerp_cam = {0.0f,0.0f,0.0f};
 318    v3f cam_pos;
 319
 320    player.fonboard = vg_lerpf( player.fonboard, phys->on_board, vg.time_delta );
 321
 322    if( phys->on_board )
 323    {
 324       v3f offs = { -0.4f, 0.15f, 0.0f };
 325       v3_lerp( lerp_cam, player.mdl.cam_pos, 0.8f, lerp_cam );
 326       v3_add( lerp_cam, offs, cam_pos );
 327
 328       /* Look angles */
 329       v3_lerp( phys->vl, phys->rb.v, 0.05f, phys->vl );
 330
 331       float yaw = atan2f(  phys->vl[0], -phys->vl[2] ),
 332           pitch = atan2f( -phys->vl[1],
 333                 sqrtf(
 334                   phys->vl[0]*phys->vl[0] + phys->vl[2]*phys->vl[2]
 335                 )) * 0.7f;
 336
 337       player.angles[0] = yaw;
 338       player.angles[1] = vg_lerpf( player.angles[1], pitch + 0.30f,
 339                                                          player.fonboard );
 340
 341       /* Camera shake */
 342       static v2f shake_damp = {0.0f,0.0f};
 343       v2f shake = { vg_randf()-0.5f, vg_randf()-0.5f };
 344       v2_muls( shake, v3_length(phys->rb.v)*0.3f
 345                            * (1.0f+fabsf(phys->slip)), shake);
 346
 347       v2_lerp( shake_damp, shake, 0.01f, shake_damp );
 348       shake_damp[0] *= 0.2f;
 349
 350       v2_muladds( player.angles, shake_damp, 0.1f, player.angles );
 351       m4x3_mulv( player.visual_transform, cam_pos, player.camera_pos );
 352    }
 353    else
 354    {
 355       float speed = vg.time_delta * k_look_speed;
 356       player.angles[0] += vg_get_axis( "lookh" ) * speed;
 357       player.angles[1] += vg_get_axis( "lookv" ) * speed;
 358
 359       player.angles[1] = vg_clampf( player.angles[1],
 360                                        -k_pitch_limit, k_pitch_limit );
 361
 362       float s =  sinf(player.angles[0]) * 0.2f,
 363             c = -cosf(player.angles[0]) * 0.2f;
 364       v3f forward_dir = { s,0.15f,c };
 365
 366
 367       m4x3f mtx;
 368       v4f rot;
 369       q_axis_angle( rot, (v3f){0.0f,1.0f,0.0f},
 370                               -player.angles[0] -VG_PIf*0.5f );
 371       q_m3x3( rot, mtx );
 372       v3_copy( player.visual_transform[3], mtx[3] );
 373
 374       m4x3_mulv( mtx, player.mdl.cam_pos, cam_pos );
 375       v3_add( cam_pos, forward_dir, player.camera_pos );
 376       v3_lerp( phys->vl, phys->rb.v, 0.3f, phys->vl );
 377    }
 378 }
 379
 380 #endif /* PLAYER_ANIMATION_H */