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