player_common.c

   1 #ifndef PLAYER_COMMON_C
   2 #define PLAYER_COMMON_C
   3
   4 #include "ent_skateshop.h"
   5 #include "player.h"
   6 #include "input.h"
   7 #include "menu.h"
   8 #include "vg/vg_perlin.h"
   9
  10 VG_STATIC void player_vector_angles( v3f angles, v3f v, float C, float k )
  11 {
  12    float yaw = atan2f( v[0], -v[2] ),
  13        pitch = atan2f
  14                (
  15                    -v[1],
  16                    sqrtf
  17                    (
  18                      v[0]*v[0] + v[2]*v[2]
  19                    )
  20                ) * C + k;
  21
  22    angles[0] = yaw;
  23    angles[1] = pitch;
  24    angles[2] = 0.0f;
  25 }
  26
  27 VG_STATIC float player_get_heading_yaw( player_instance *player )
  28 {
  29    v3f xz;
  30    q_mulv( player->rb.q, (v3f){ 0.0f,0.0f,1.0f }, xz );
  31    m3x3_mulv( player->invbasis, xz, xz );
  32    return atan2f( xz[0], xz[2] );
  33 }
  34
  35 VG_STATIC void player_camera_portal_correction( player_instance *player )
  36 {
  37    if( player->gate_waiting ){
  38       /* construct plane equation for reciever gate */
  39       v4f plane;
  40       q_mulv( player->gate_waiting->q[1], (v3f){0.0f,0.0f,1.0f}, plane );
  41       plane[3] = v3_dot( plane, player->gate_waiting->co[1] );
  42
  43       /* check camera polarity */
  44       if( v3_dot( player->cam.pos, plane ) < plane[3] ) {
  45          vg_success( "Plane cleared\n" );
  46          player_apply_transport_to_cam( player->gate_waiting->transport );
  47          player->gate_waiting = NULL;
  48          player->viewable_world = world_current_instance();
  49       }
  50       else{
  51          /* de-transform camera and player back */
  52          m4x3f inverse;
  53          m4x3_invert_affine( player->gate_waiting->transport, inverse );
  54          m4x3_mulv( inverse, player->cam.pos, player->cam.pos );
  55
  56          struct skeleton *sk = &player->playeravatar->sk;
  57          skeleton_apply_transform( sk, inverse );
  58       }
  59    }
  60 }
  61
  62 VG_STATIC void player__cam_iterate( player_instance *player ){
  63    struct player_avatar *av = player->playeravatar;
  64    struct player_cam_controller *cc = &player->cam_control;
  65
  66    if( player->subsystem == k_player_subsystem_walk ){
  67       v3_copy( (v3f){-0.1f,1.8f,0.0f}, cc->fpv_viewpoint );
  68       v3_copy( (v3f){0.0f,0.0f,0.0f}, cc->fpv_offset );
  69       v3_copy( (v3f){0.0f,1.4f,0.0f}, cc->tpv_offset );
  70    }
  71    else{
  72       v3_copy( (v3f){-0.15f,1.75f,0.0f}, cc->fpv_viewpoint );
  73       v3_copy( (v3f){0.0f,0.0f,0.0f}, cc->fpv_offset );
  74       v3_copy( (v3f){0.0f,1.4f,0.0f}, cc->tpv_offset );
  75       v3_add( cc->tpv_offset_extra, cc->tpv_offset, cc->tpv_offset );
  76    }
  77
  78    player->cam_velocity_constant = 0.25f;
  79    player->cam_velocity_coefficient = 0.7f;
  80
  81    /* lerping */
  82
  83    player->cam_velocity_influence_smooth = vg_lerpf(
  84          player->cam_velocity_influence_smooth,
  85          player->cam_velocity_influence,
  86          vg.time_frame_delta * 8.0f );
  87
  88    player->cam_velocity_coefficient_smooth = vg_lerpf(
  89          player->cam_velocity_coefficient_smooth,
  90          player->cam_velocity_coefficient,
  91          vg.time_frame_delta * 8.0f );
  92
  93    player->cam_velocity_constant_smooth = vg_lerpf(
  94          player->cam_velocity_constant_smooth,
  95          player->cam_velocity_constant,
  96          vg.time_frame_delta * 8.0f );
  97
  98    enum camera_mode target_mode = cc->camera_mode;
  99
 100    if( player->subsystem == k_player_subsystem_dead )
 101       target_mode = k_cam_thirdperson;
 102
 103    cc->camera_type_blend =
 104       vg_lerpf( cc->camera_type_blend,
 105                (target_mode == k_cam_firstperson)? 1.0f: 0.0f,
 106                 5.0f * vg.time_frame_delta );
 107
 108    v3_lerp( cc->fpv_viewpoint_smooth, cc->fpv_viewpoint,
 109             vg.time_frame_delta * 8.0f, cc->fpv_viewpoint_smooth );
 110
 111    v3_lerp( cc->fpv_offset_smooth, cc->fpv_offset,
 112             vg.time_frame_delta * 8.0f, cc->fpv_offset_smooth );
 113
 114    v3_lerp( cc->tpv_offset_smooth, cc->tpv_offset,
 115             vg.time_frame_delta * 8.0f, cc->tpv_offset_smooth );
 116
 117    /* fov -- simple blend */
 118    float fov_skate = vg_lerpf( 97.0f, 135.0f, k_fov ),
 119          fov_walk  = vg_lerpf( 90.0f, 110.0f, k_fov );
 120
 121    player->cam.fov = vg_lerpf( fov_walk, fov_skate, cc->camera_type_blend );
 122
 123    /*
 124     * first person camera
 125     */
 126
 127    /* position */
 128    v3f fpv_pos, fpv_offset;
 129    m4x3_mulv( av->sk.final_mtx[ av->id_head-1 ],
 130                cc->fpv_viewpoint_smooth, fpv_pos );
 131    m3x3_mulv( player->rb.to_world, cc->fpv_offset_smooth, fpv_offset );
 132    v3_add( fpv_offset, fpv_pos, fpv_pos );
 133
 134    /* angles */
 135    v3f velocity_angles;
 136    v3_lerp( cc->cam_velocity_smooth, player->rb.v, 4.0f*vg.time_frame_delta,
 137             cc->cam_velocity_smooth );
 138
 139    v3f velocity_local;
 140    m3x3_mulv( player->invbasis, cc->cam_velocity_smooth, velocity_local );
 141    player_vector_angles( velocity_angles, velocity_local,
 142                          player->cam_velocity_coefficient_smooth,
 143                          player->cam_velocity_constant_smooth );
 144
 145    float inf_fpv = player->cam_velocity_influence_smooth * cc->camera_type_blend,
 146          inf_tpv = player->cam_velocity_influence_smooth *
 147                      (1.0f-cc->camera_type_blend);
 148
 149    camera_lerp_angles( player->angles, velocity_angles,
 150                         inf_fpv,
 151                         player->angles );
 152
 153    /*
 154     * Third person camera
 155     */
 156
 157    /* no idea what this technique is called, it acts like clamped position based
 158     * on some derivative of where the final camera would end up ....
 159     *
 160     * it is done in the local basis then transformed back */
 161
 162    v3f future;
 163    v3_muls( player->rb.v, 0.4f*vg.time_frame_delta, future );
 164    m3x3_mulv( player->invbasis, future, future );
 165
 166    v3f camera_follow_dir =
 167       { -sinf( player->angles[0] ) * cosf( player->angles[1] ),
 168          sinf( player->angles[1] ),
 169          cosf( player->angles[0] ) * cosf( player->angles[1] ) };
 170
 171    v3f v0;
 172    v3_sub( camera_follow_dir, future, v0 );
 173
 174    v3f follow_angles;
 175    v3_copy( player->angles, follow_angles );
 176    follow_angles[0] = atan2f( -v0[0], v0[2] );
 177    follow_angles[1] = 0.3f + velocity_angles[1] * 0.2f;
 178
 179    float ya = atan2f( -velocity_local[1], 30.0f );
 180
 181    follow_angles[1] = 0.3f + ya;
 182    camera_lerp_angles( player->angles, follow_angles,
 183                         inf_tpv,
 184                         player->angles );
 185
 186    v3f pco;
 187    v4f pq;
 188    rb_extrapolate( &player->rb, pco, pq );
 189    v3_lerp( cc->tpv_lpf, pco, 20.0f*vg.time_frame_delta, cc->tpv_lpf );
 190
 191    /* now move into world */
 192    v3f tpv_pos, tpv_offset, tpv_origin;
 193
 194    /* origin */
 195    q_mulv( pq, cc->tpv_offset_smooth, tpv_origin );
 196    v3_add( tpv_origin, cc->tpv_lpf, tpv_origin );
 197
 198    /* offset */
 199    m3x3_mulv( player->basis, camera_follow_dir, camera_follow_dir );
 200    v3_muls( camera_follow_dir, 1.8f, tpv_offset );
 201    v3_muladds( tpv_offset, cc->cam_velocity_smooth, -0.025f, tpv_offset );
 202
 203    v3_add( tpv_origin, tpv_offset, tpv_pos );
 204    f32 t; v3f n;
 205    if( spherecast_world( world_current_instance(), tpv_origin, tpv_pos,
 206                          0.2f, &t, n ) != -1 ){
 207       v3_lerp( tpv_origin, tpv_pos, t, tpv_pos );
 208    }
 209
 210    /*
 211     * Blend cameras
 212     */
 213    v3_lerp( tpv_pos, fpv_pos, cc->camera_type_blend, player->cam.pos );
 214    v3_copy( player->angles, player->cam.angles );
 215
 216    /* Camera shake */
 217    f32 speed = v3_length(player->rb.v),
 218        strength = k_cam_shake_strength * speed;
 219    player->cam_trackshake += speed*k_cam_shake_trackspeed*vg.time_frame_delta;
 220
 221    v2f rnd = {perlin1d( player->cam_trackshake, 1.0f, 4, 20 ),
 222               perlin1d( player->cam_trackshake, 1.0f, 4, 63 ) };
 223    v2_muladds( player->cam.angles, rnd, strength, player->cam.angles );
 224
 225    v3f Fd, Fs, F;
 226    v3_muls( player->cam_land_punch_v, -k_cam_damp, Fd );
 227    v3_muls( player->cam_land_punch, -k_cam_spring, Fs );
 228    v3_muladds( player->cam_land_punch, player->cam_land_punch_v,
 229                vg.time_frame_delta, player->cam_land_punch );
 230    v3_add( Fd, Fs, F );
 231    v3_muladds( player->cam_land_punch_v, F, vg.time_frame_delta,
 232                player->cam_land_punch_v );
 233    v3_add( player->cam_land_punch, player->cam.pos, player->cam.pos );
 234
 235    /* override camera */
 236    player->cam.angles[0] =
 237       vg_alerpf(  player->cam.angles[0], player->cam_override_angles[0],
 238                   player->cam_override_strength );
 239    player->cam.angles[1] =
 240       vg_lerpf ( player->cam.angles[1], player->cam_override_angles[1],
 241                  player->cam_override_strength );
 242    v3_lerp( player->cam.pos, player->cam_override_pos,
 243             player->cam_override_strength, player->cam.pos );
 244    player->cam.fov = vg_lerpf( player->cam.fov, player->cam_override_fov,
 245                                player->cam_override_strength );
 246
 247
 248    if( k_cinema >= 0.0001f ){
 249       ent_camera *cam = NULL;
 250       f32 min_dist = k_cinema;
 251
 252       world_instance *world = player->viewable_world;
 253       for( u32 i=0; i<mdl_arrcount(&world->ent_camera); i++ ){
 254          ent_camera *c = mdl_arritm(&world->ent_camera,i);
 255
 256          f32 dist = v3_dist( c->transform.co, player->rb.co );
 257
 258          if( dist < min_dist ){
 259             min_dist = dist;
 260             cam = c;
 261          }
 262       }
 263
 264       if( cam ){
 265          player->cam.fov = cam->fov;
 266          v3_copy( cam->transform.co, player->cam.pos );
 267          v3f v0;
 268          if( k_cinema_fixed )
 269             mdl_transform_vector( &cam->transform, (v3f){0.0f,-1.0f,0.0f}, v0 );
 270          else v3_sub( player->rb.co, cam->transform.co, v0 );
 271          m3x3_mulv( player->invbasis, v0, v0 );
 272          player_vector_angles( player->cam.angles, v0, 1.0f, 0.0f );
 273       }
 274    }
 275
 276    /* portal transitions */
 277    player_camera_portal_correction( player );
 278 }
 279
 280 VG_STATIC void player_look( player_instance *player, v3f angles )
 281 {
 282    if( vg_ui.wants_mouse ) return;
 283
 284    float sensitivity = skaterift.time_rate;
 285
 286    angles[2] = 0.0f;
 287
 288    v2f mouse_input;
 289    v2_copy( vg.mouse_delta, mouse_input );
 290    if( k_invert_y ) mouse_input[1] *= -1.0f;
 291    v2_muladds( angles, mouse_input, 0.0025f * sensitivity, angles );
 292
 293    v2f jlook;
 294    joystick_state( k_srjoystick_look, jlook );
 295
 296    angles[0] += jlook[0] * vg.time_delta * 4.0f * sensitivity;
 297    float input_y = jlook[1] * vg.time_delta * 4.0f;
 298    if( k_invert_y ) input_y *= -1.0f;
 299
 300    angles[1] += input_y * sensitivity;
 301    angles[1] = vg_clampf( angles[1], -VG_PIf*0.5f, VG_PIf*0.5f );
 302 }
 303
 304 #endif /* PLAYER_COMMON_C */