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 {
  64    struct player_avatar *av = player->playeravatar;
  65
  66    if( player->subsystem == k_player_subsystem_walk ){
  67       v3_copy( (v3f){-0.1f,1.8f,0.0f}, player->fpv_viewpoint );
  68       v3_copy( (v3f){0.0f,0.0f,0.0f}, player->fpv_offset );
  69       v3_copy( (v3f){0.0f,1.4f,0.0f}, player->tpv_offset );
  70    }
  71    else{
  72       v3_copy( (v3f){-0.15f,1.75f,0.0f}, player->fpv_viewpoint );
  73 #if 0
  74       v3_copy( (v3f){-0.35f,0.0f,0.0f}, player->fpv_offset );
  75 #endif
  76       v3_copy( (v3f){0.0f,0.0f,0.0f}, player->fpv_offset );
  77       v3_copy( (v3f){0.0f,1.4f,0.0f}, player->tpv_offset );
  78       v3_add( player->tpv_offset_extra, player->tpv_offset,
  79               player->tpv_offset );
  80    }
  81
  82    player->cam_velocity_constant = 0.25f;
  83    player->cam_velocity_coefficient = 0.7f;
  84
  85    /* lerping */
  86
  87    player->cam_velocity_influence_smooth = vg_lerpf(
  88          player->cam_velocity_influence_smooth,
  89          player->cam_velocity_influence,
  90          vg.time_frame_delta * 8.0f );
  91
  92    player->cam_velocity_coefficient_smooth = vg_lerpf(
  93          player->cam_velocity_coefficient_smooth,
  94          player->cam_velocity_coefficient,
  95          vg.time_frame_delta * 8.0f );
  96
  97    player->cam_velocity_constant_smooth = vg_lerpf(
  98          player->cam_velocity_constant_smooth,
  99          player->cam_velocity_constant,
 100          vg.time_frame_delta * 8.0f );
 101
 102    enum camera_mode target_mode = player->camera_mode;
 103
 104    if( player->subsystem == k_player_subsystem_dead )
 105       target_mode = k_cam_thirdperson;
 106
 107    player->camera_type_blend =
 108       vg_lerpf( player->camera_type_blend,
 109                 (target_mode == k_cam_firstperson)? 1.0f: 0.0f,
 110                 5.0f * vg.time_frame_delta );
 111
 112    v3_lerp( player->fpv_viewpoint_smooth, player->fpv_viewpoint,
 113          vg.time_frame_delta * 8.0f, player->fpv_viewpoint_smooth );
 114
 115    v3_lerp( player->fpv_offset_smooth, player->fpv_offset,
 116          vg.time_frame_delta * 8.0f, player->fpv_offset_smooth );
 117
 118    v3_lerp( player->tpv_offset_smooth, player->tpv_offset,
 119          vg.time_frame_delta * 8.0f, player->tpv_offset_smooth );
 120
 121    /* fov -- simple blend */
 122    float fov_skate = vg_lerpf( 97.0f, 135.0f, k_fov ),
 123          fov_walk  = vg_lerpf( 90.0f, 110.0f, k_fov );
 124
 125    player->cam.fov = vg_lerpf( fov_walk, fov_skate, player->camera_type_blend );
 126
 127    /*
 128     * first person camera
 129     */
 130
 131    /* position */
 132    v3f fpv_pos, fpv_offset;
 133    m4x3_mulv( av->sk.final_mtx[ av->id_head-1 ],
 134                player->fpv_viewpoint_smooth, fpv_pos );
 135    m3x3_mulv( player->rb.to_world, player->fpv_offset_smooth, fpv_offset );
 136    v3_add( fpv_offset, fpv_pos, fpv_pos );
 137
 138    /* angles */
 139    v3f velocity_angles;
 140    v3_lerp( player->cam_velocity_smooth, player->rb.v, 4.0f*vg.time_frame_delta,
 141             player->cam_velocity_smooth );
 142
 143    v3f velocity_local;
 144    m3x3_mulv( player->invbasis, player->cam_velocity_smooth, velocity_local );
 145    player_vector_angles( velocity_angles, velocity_local,
 146                          player->cam_velocity_coefficient_smooth,
 147                          player->cam_velocity_constant_smooth );
 148
 149    float inf_fpv = player->cam_velocity_influence_smooth *
 150                    player->camera_type_blend,
 151          inf_tpv = player->cam_velocity_influence_smooth *
 152                    (1.0f-player->camera_type_blend);
 153
 154    camera_lerp_angles( player->angles, velocity_angles,
 155                         inf_fpv,
 156                         player->angles );
 157
 158    /*
 159     * Third person camera
 160     */
 161
 162    /* no idea what this technique is called, it acts like clamped position based
 163     * on some derivative of where the final camera would end up ....
 164     *
 165     * it is done in the local basis then transformed back */
 166
 167    v3f future;
 168    v3_muls( player->rb.v, 0.4f*vg.time_frame_delta, future );
 169    m3x3_mulv( player->invbasis, future, future );
 170
 171    v3f camera_follow_dir =
 172       { -sinf( player->angles[0] ) * cosf( player->angles[1] ),
 173          sinf( player->angles[1] ),
 174          cosf( player->angles[0] ) * cosf( player->angles[1] ) };
 175
 176    v3f v0;
 177    v3_sub( camera_follow_dir, future, v0 );
 178
 179    v3f follow_angles;
 180    v3_copy( player->angles, follow_angles );
 181    follow_angles[0] = atan2f( -v0[0], v0[2] );
 182    follow_angles[1] = 0.3f + velocity_angles[1] * 0.2f;
 183
 184    float ya = atan2f( -velocity_local[1], 30.0f );
 185
 186    follow_angles[1] = 0.3f + ya;
 187    camera_lerp_angles( player->angles, follow_angles,
 188                         inf_tpv,
 189                         player->angles );
 190
 191    v3f pco;
 192    v4f pq;
 193    rb_extrapolate( &player->rb, pco, pq );
 194    v3_lerp( player->tpv_lpf, pco, 20.0f*vg.time_frame_delta, player->tpv_lpf );
 195
 196    /* now move into world */
 197    v3f tpv_pos, tpv_offset, tpv_origin;
 198
 199    /* origin */
 200    q_mulv( pq, player->tpv_offset_smooth, tpv_origin );
 201    v3_add( tpv_origin, player->tpv_lpf, tpv_origin );
 202
 203    /* offset */
 204    m3x3_mulv( player->basis, camera_follow_dir, camera_follow_dir );
 205    v3_muls( camera_follow_dir, 1.8f, tpv_offset );
 206    v3_muladds( tpv_offset, player->cam_velocity_smooth, -0.025f, tpv_offset );
 207
 208    v3_add( tpv_origin, tpv_offset, tpv_pos );
 209    f32 t; v3f n;
 210    if( spherecast_world( world_current_instance(), tpv_origin, tpv_pos,
 211                          0.2f, &t, n ) != -1 ){
 212       v3_lerp( tpv_origin, tpv_pos, t, tpv_pos );
 213    }
 214
 215    /*
 216     * Blend cameras
 217     */
 218    v3_lerp( tpv_pos, fpv_pos, player->camera_type_blend, player->cam.pos );
 219    v3_copy( player->angles, player->cam.angles );
 220
 221    /* Camera shake */
 222    f32 speed = v3_length(player->rb.v),
 223        strength = k_cam_shake_strength * speed;
 224    player->cam_trackshake += speed*k_cam_shake_trackspeed*vg.time_frame_delta;
 225
 226    v2f rnd = {perlin1d( player->cam_trackshake, 1.0f, 4, 20 ),
 227               perlin1d( player->cam_trackshake, 1.0f, 4, 63 ) };
 228    v2_muladds( player->cam.angles, rnd, strength, player->cam.angles );
 229
 230    v3f Fd, Fs, F;
 231    v3_muls( player->cam_land_punch_v, -k_cam_damp, Fd );
 232    v3_muls( player->cam_land_punch, -k_cam_spring, Fs );
 233    v3_muladds( player->cam_land_punch, player->cam_land_punch_v,
 234                vg.time_frame_delta, player->cam_land_punch );
 235    v3_add( Fd, Fs, F );
 236    v3_muladds( player->cam_land_punch_v, F, vg.time_frame_delta,
 237                player->cam_land_punch_v );
 238    v3_add( player->cam_land_punch, player->cam.pos, player->cam.pos );
 239
 240    /* override camera */
 241    player->cam.angles[0] =
 242       vg_alerpf(  player->cam.angles[0], player->cam_override_angles[0],
 243                   player->cam_override_strength );
 244    player->cam.angles[1] =
 245       vg_lerpf ( player->cam.angles[1], player->cam_override_angles[1],
 246                  player->cam_override_strength );
 247    v3_lerp( player->cam.pos, player->cam_override_pos,
 248             player->cam_override_strength, player->cam.pos );
 249    player->cam.fov = vg_lerpf( player->cam.fov, player->cam_override_fov,
 250                                player->cam_override_strength );
 251
 252
 253    if( k_cinema >= 0.0001f ){
 254       ent_camera *cam = NULL;
 255       f32 min_dist = k_cinema;
 256
 257       world_instance *world = player->viewable_world;
 258       for( u32 i=0; i<mdl_arrcount(&world->ent_camera); i++ ){
 259          ent_camera *c = mdl_arritm(&world->ent_camera,i);
 260
 261          f32 dist = v3_dist( c->transform.co, player->rb.co );
 262
 263          if( dist < min_dist ){
 264             min_dist = dist;
 265             cam = c;
 266          }
 267       }
 268
 269       if( cam ){
 270          player->cam.fov = cam->fov;
 271          v3_copy( cam->transform.co, player->cam.pos );
 272          v3f v0;
 273          if( k_cinema_fixed )
 274             mdl_transform_vector( &cam->transform, (v3f){0.0f,-1.0f,0.0f}, v0 );
 275          else v3_sub( player->rb.co, cam->transform.co, v0 );
 276          m3x3_mulv( player->invbasis, v0, v0 );
 277          player_vector_angles( player->cam.angles, v0, 1.0f, 0.0f );
 278       }
 279    }
 280
 281    /* portal transitions */
 282    player_camera_portal_correction( player );
 283 }
 284
 285 VG_STATIC void player_look( player_instance *player, v3f angles )
 286 {
 287    if( vg_ui.wants_mouse ) return;
 288
 289    float sensitivity = 1.0f-menu.factive;
 290
 291    angles[2] = 0.0f;
 292
 293    v2f mouse_input;
 294    v2_copy( vg.mouse_delta, mouse_input );
 295    if( k_invert_y ) mouse_input[1] *= -1.0f;
 296    v2_muladds( angles, mouse_input, 0.0025f * sensitivity, angles );
 297
 298    v2f jlook;
 299    joystick_state( k_srjoystick_look, jlook );
 300
 301    angles[0] += jlook[0] * vg.time_delta * 4.0f * sensitivity;
 302    float input_y = jlook[1] * vg.time_delta * 4.0f;
 303    if( k_invert_y ) input_y *= -1.0f;
 304
 305    angles[1] += input_y * sensitivity;
 306    angles[1] = vg_clampf( angles[1], -VG_PIf*0.5f, VG_PIf*0.5f );
 307 }
 308
 309 #endif /* PLAYER_COMMON_C */