player_animation.h

   1 #ifndef PLAYER_ANIMATION_H
   2 #define PLAYER_ANIMATION_H
   3
   4 #include "player.h"
   5
   6 static void player_animate_offboard(void)
   7 {
   8    struct player_phys *phys = &player.phys;
   9
  10    mdl_keyframe apose[32], bpose[32];
  11    struct skeleton *sk = &player.mdl.sk;
  12
  13    float walk_norm = (float)player.mdl.anim_walk->length/30.0f,
  14          run_norm  = (float)player.mdl.anim_run->length/30.0f,
  15          t = player.walk_timer,
  16          l = vg_get_axis("grabr") * 0.5f + 0.5f;
  17
  18    skeleton_sample_anim( sk, player.mdl.anim_walk, t*walk_norm, apose );
  19    skeleton_sample_anim( sk, player.mdl.anim_run,  t*run_norm, bpose );
  20
  21    skeleton_lerp_pose( sk, apose, bpose, l, apose );
  22
  23    float idle_walk = vg_minf( l * 10.0f, 1.0f);
  24
  25    skeleton_sample_anim( sk, player.mdl.anim_idle, vg_time*0.1f, bpose );
  26    skeleton_lerp_pose( sk, apose, bpose, 1.0f-idle_walk, apose );
  27
  28    skeleton_apply_pose( &player.mdl.sk, apose, k_anim_apply_defer_ik );
  29    skeleton_apply_ik_pass( &player.mdl.sk );
  30    skeleton_apply_pose( &player.mdl.sk, apose, k_anim_apply_deffered_only );
  31
  32    v3_copy( player.mdl.sk.final_mtx[player.mdl.id_head-1][3],
  33                player.mdl.cam_pos );
  34
  35    skeleton_apply_inverses( &player.mdl.sk );
  36
  37    m4x3f mtx;
  38    v4f rot;
  39    q_axis_angle( rot, (v3f){0.0f,1.0f,0.0f}, -player.angles[0] - VG_PIf*0.5f );
  40    q_m3x3( rot, mtx );
  41    v3_copy( phys->rb.to_world[3], mtx[3] );
  42
  43    skeleton_apply_transform( &player.mdl.sk, mtx );
  44    skeleton_debug( &player.mdl.sk );
  45 }
  46
  47 static void player_animate(void)
  48 {
  49    struct player_phys *phys = &player.phys;
  50
  51    if( !phys->on_board )
  52    {
  53       player_animate_offboard();
  54       return;
  55    }
  56
  57    /* Camera position */
  58    v3_sub( phys->rb.v, phys->v_last, phys->a );
  59    v3_copy( phys->rb.v, phys->v_last );
  60
  61    v3_add( phys->m, phys->a, phys->m );
  62    v3_lerp( phys->m, (v3f){0.0f,0.0f,0.0f}, 0.1f, phys->m );
  63
  64    phys->m[0] = vg_clampf( phys->m[0], -2.0f, 2.0f );
  65    phys->m[1] = vg_clampf( phys->m[1], -2.0f, 2.0f );
  66    phys->m[2] = vg_clampf( phys->m[2], -2.0f, 2.0f );
  67    v3_lerp( phys->bob, phys->m, 0.2f, phys->bob );
  68
  69    /* Head */
  70    float lslip = fabsf(phys->slip);
  71
  72    float kheight = 2.0f,
  73          kleg = 0.6f;
  74
  75    v3f offset;
  76    v3_zero( offset );
  77    m3x3_mulv( phys->rb.to_local, phys->bob, offset );
  78
  79    static float speed_wobble = 0.0f, speed_wobble_2 = 0.0f;
  80
  81    float kickspeed = vg_clampf(v3_length(phys->rb.v)*(1.0f/40.0f), 0.0f, 1.0f);
  82    float kicks = (vg_randf()-0.5f)*2.0f*kickspeed;
  83    float sign = vg_signf( kicks );
  84    speed_wobble = vg_lerpf( speed_wobble, kicks*kicks*sign, 0.1f );
  85    speed_wobble_2 = vg_lerpf( speed_wobble_2, speed_wobble, 0.04f );
  86
  87    offset[0] *= 0.26f;
  88    offset[0] += speed_wobble_2*3.0f;
  89
  90    offset[1] *= -0.3f;
  91    offset[2] *= 0.01f;
  92
  93    offset[0] = vg_clampf( offset[0], -0.8f, 0.8f );
  94    offset[1] = vg_clampf( offset[1], -0.5f, 0.0f );
  95
  96    /*
  97     * Animation blending
  98     * ===========================================
  99     */
 100
 101    /* scalar blending information */
 102    float speed = v3_length( phys->rb.v );
 103
 104    /* sliding */
 105    {
 106       float desired = vg_clampf( lslip, 0.0f, 1.0f );
 107       player.fslide = vg_lerpf( player.fslide, desired, 0.04f );
 108    }
 109
 110    /* movement information */
 111    {
 112       float dirz = phys->reverse > 0.0f? 0.0f: 1.0f,
 113             dirx = phys->slip < 0.0f?    0.0f: 1.0f,
 114             fly  = phys->in_air?         1.0f: 0.0f;
 115
 116       player.fdirz = vg_lerpf( player.fdirz, dirz, 0.04f );
 117       player.fdirx = vg_lerpf( player.fdirx, dirx, 0.01f );
 118       player.ffly  = vg_lerpf( player.ffly, fly, 0.04f );
 119    }
 120
 121    struct skeleton *sk = &player.mdl.sk;
 122
 123    mdl_keyframe apose[32], bpose[32];
 124    mdl_keyframe ground_pose[32];
 125    {
 126       /* when the player is moving fast he will crouch down a little bit */
 127       float stand = 1.0f - vg_clampf( speed * 0.03f, 0.0f, 1.0f );
 128       player.fstand = vg_lerpf( player.fstand, stand, 0.1f );
 129
 130       /* stand/crouch */
 131       float dir_frame   = player.fdirz * (15.0f/30.0f),
 132             stand_blend = offset[1]*-2.0f;
 133
 134       skeleton_sample_anim( sk, player.mdl.anim_stand, dir_frame, apose );
 135       skeleton_sample_anim( sk, player.mdl.anim_highg, dir_frame, bpose );
 136       skeleton_lerp_pose( sk, apose, bpose, stand_blend, apose );
 137
 138       /* sliding */
 139       float slide_frame = player.fdirx * (15.0f/30.0f);
 140       skeleton_sample_anim( sk, player.mdl.anim_slide, slide_frame, bpose );
 141       skeleton_lerp_pose( sk, apose, bpose, player.fslide, apose );
 142
 143       /* pushing */
 144       player.fpush = vg_lerpf( player.fpush, player.pushing, 0.1f );
 145
 146       float pt = player.push_time;
 147       if( phys->reverse > 0.0f )
 148          skeleton_sample_anim( sk, player.mdl.anim_push, pt, bpose );
 149       else
 150          skeleton_sample_anim( sk, player.mdl.anim_push_reverse, pt, bpose );
 151
 152       skeleton_lerp_pose( sk, apose, bpose, player.fpush, apose );
 153
 154       /* trick setup */
 155       float jump_start_frame = 14.0f/30.0f;
 156
 157       player.fjump = vg_lerpf( player.fjump, phys->jump, 0.14f );
 158
 159       float setup_frame = phys->jump * jump_start_frame,
 160             setup_blend = vg_minf( player.fjump, 1.0f );
 161
 162       float jump_frame = (vg_time - player.jump_time) + jump_start_frame;
 163       if( jump_frame >= jump_start_frame && jump_frame <= (40.0f/30.0f) )
 164          setup_frame = jump_frame;
 165
 166       struct skeleton_anim *jump_anim = phys->jump_dir?
 167                                         player.mdl.anim_ollie:
 168                                         player.mdl.anim_ollie_reverse;
 169
 170       skeleton_sample_anim_clamped( sk, jump_anim, setup_frame, bpose );
 171       skeleton_lerp_pose( sk, apose, bpose, setup_blend, ground_pose );
 172    }
 173
 174    mdl_keyframe air_pose[32];
 175    {
 176       float target = -vg_get_axis("horizontal");
 177       player.fairdir = vg_lerpf( player.fairdir, target, 0.04f );
 178
 179       float air_frame = (player.fairdir*0.5f+0.5f) * (15.0f/30.0f);
 180
 181       skeleton_sample_anim( sk, player.mdl.anim_air, air_frame, apose );
 182
 183       static v2f grab_choice;
 184       v2_lerp( grab_choice, (v2f){ vg_get_axis("h1"), vg_get_axis("v1") },
 185                             0.04f, grab_choice );
 186
 187       float ang = atan2f( grab_choice[0], grab_choice[1] ),
 188             ang_unit = (ang+VG_PIf) * (1.0f/VG_TAUf),
 189             grab_frame = ang_unit * (15.0f/30.0f);
 190
 191       skeleton_sample_anim( sk, player.mdl.anim_grabs, grab_frame, bpose );
 192       skeleton_lerp_pose( sk, apose, bpose, phys->grab, air_pose );
 193    }
 194
 195    skeleton_lerp_pose( sk, ground_pose, air_pose, player.ffly, apose );
 196
 197    float add_grab_mod = 1.0f - player.ffly*phys->grab;
 198
 199    /* additive effects */
 200    {
 201       u32 apply_to[] = { player.mdl.id_hip,
 202                          player.mdl.id_ik_hand_l,
 203                          player.mdl.id_ik_hand_r,
 204                          player.mdl.id_ik_elbow_l,
 205                          player.mdl.id_ik_elbow_r };
 206
 207       for( int i=0; i<vg_list_size(apply_to); i ++ )
 208       {
 209          apose[apply_to[i]-1].co[0] += offset[0]*add_grab_mod;
 210          apose[apply_to[i]-1].co[2] += offset[2]*add_grab_mod;
 211       }
 212    }
 213
 214    skeleton_apply_pose( &player.mdl.sk, apose, k_anim_apply_defer_ik );
 215    skeleton_apply_ik_pass( &player.mdl.sk );
 216    skeleton_apply_pose( &player.mdl.sk, apose, k_anim_apply_deffered_only );
 217
 218    v3_copy( player.mdl.sk.final_mtx[player.mdl.id_head-1][3],
 219                player.mdl.cam_pos );
 220    skeleton_apply_inverses( &player.mdl.sk );
 221    skeleton_apply_transform( &player.mdl.sk, phys->rb.to_world );
 222
 223    skeleton_debug( &player.mdl.sk );
 224 }
 225
 226 static void player_animate_death_cam(void)
 227 {
 228    v3f delta;
 229    v3f head_pos;
 230    v3_copy( player.mdl.ragdoll[0].rb.co, head_pos );
 231
 232    v3_sub( head_pos, player.camera_pos, delta );
 233    v3_normalize( delta );
 234
 235    v3f follow_pos;
 236    v3_muladds( head_pos, delta, -2.5f, follow_pos );
 237    v3_lerp( player.camera_pos, follow_pos, 0.1f, player.camera_pos );
 238
 239    /*
 240     * Make sure the camera stays above the ground
 241     */
 242    v3f min_height = {0.0f,1.0f,0.0f};
 243
 244    v3f sample;
 245    v3_add( player.camera_pos, min_height, sample );
 246    ray_hit hit;
 247    hit.dist = min_height[1]*2.0f;
 248
 249    if( ray_world( sample, (v3f){0.0f,-1.0f,0.0f}, &hit ))
 250       v3_add( hit.pos, min_height, player.camera_pos );
 251
 252    player.camera_pos[1] =
 253       vg_maxf( wrender.height + 2.0f, player.camera_pos[1] );
 254
 255    player.angles[0] = atan2f( delta[0], -delta[2] );
 256    player.angles[1] = -asinf( delta[1] );
 257 }
 258
 259 static void player_animate_camera(void)
 260 {
 261    struct player_phys *phys = &player.phys;
 262
 263    static v3f lerp_cam = {0.0f,0.0f,0.0f};
 264    v3f cam_pos;
 265
 266    player.fonboard = vg_lerpf(player.fonboard, phys->on_board, ktimestep*1.0f);
 267
 268    if( phys->on_board )
 269    {
 270       v3f offs = { -0.4f, 0.15f, 0.0f };
 271       v3_lerp( lerp_cam, player.mdl.cam_pos, 0.8f, lerp_cam );
 272       v3_add( lerp_cam, offs, cam_pos );
 273
 274       /* Look angles */
 275       v3_lerp( phys->vl, phys->rb.v, 0.05f, phys->vl );
 276
 277       float yaw = atan2f(  phys->vl[0], -phys->vl[2] ),
 278           pitch = atan2f( -phys->vl[1],
 279                 sqrtf(
 280                   phys->vl[0]*phys->vl[0] + phys->vl[2]*phys->vl[2]
 281                 )) * 0.7f;
 282
 283       player.angles[0] = yaw;
 284       player.angles[1] = vg_lerpf( player.angles[1], pitch + 0.30f,
 285                                                          player.fonboard );
 286
 287       /* Camera shake */
 288       static v2f shake_damp = {0.0f,0.0f};
 289       v2f shake = { vg_randf()-0.5f, vg_randf()-0.5f };
 290       v2_muls( shake, v3_length(phys->rb.v)*0.3f
 291                            * (1.0f+fabsf(phys->slip)), shake);
 292
 293       v2_lerp( shake_damp, shake, 0.01f, shake_damp );
 294       shake_damp[0] *= 0.2f;
 295
 296       v2_muladds( player.angles, shake_damp, 0.1f, player.angles );
 297       m4x3_mulv( phys->rb.to_world, cam_pos, player.camera_pos );
 298    }
 299    else
 300    {
 301       float speed = ktimestep * k_look_speed;
 302       player.angles[0] += vg_get_axis( "horizontal" ) * speed;
 303       player.angles[1] += vg_get_axis( "vertical" ) * speed;
 304
 305       player.angles[1] = vg_clampf( player.angles[1],
 306                                        -k_pitch_limit, k_pitch_limit );
 307
 308       float s =  sinf(player.angles[0]) * 0.2f,
 309             c = -cosf(player.angles[0]) * 0.2f;
 310       v3f forward_dir = { s,0.15f,c };
 311
 312
 313       m4x3f mtx;
 314       v4f rot;
 315       q_axis_angle( rot, (v3f){0.0f,1.0f,0.0f},
 316                               -player.angles[0] -VG_PIf*0.5f );
 317       q_m3x3( rot, mtx );
 318       v3_copy( phys->rb.to_world[3], mtx[3] );
 319
 320       m4x3_mulv( mtx, player.mdl.cam_pos, cam_pos );
 321       v3_add( cam_pos, forward_dir, player.camera_pos );
 322       v3_lerp( phys->vl, phys->rb.v, 0.3f, phys->vl );
 323    }
 324 }
 325
 326 #endif /* PLAYER_ANIMATION_H */