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