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          skeleton_apply_transform( &localplayer.skeleton, inverse,
  56                                     localplayer.final_mtx );
  57       }
  58    }
  59 }
  60
  61 static void player__cam_iterate(void){
  62    struct player_cam_controller *cc = &localplayer.cam_control;
  63
  64    if( localplayer.subsystem == k_player_subsystem_walk ){
  65       v3_copy( (v3f){-0.1f,1.8f,0.0f}, cc->fpv_viewpoint );
  66       v3_copy( (v3f){0.0f,0.0f,0.0f}, cc->fpv_offset );
  67       v3_copy( (v3f){0.0f,1.4f,0.0f}, cc->tpv_offset );
  68    }
  69    else{
  70       v3_copy( (v3f){-0.15f,1.75f,0.0f}, cc->fpv_viewpoint );
  71       v3_copy( (v3f){0.0f,0.0f,0.0f}, cc->fpv_offset );
  72
  73       f32 h = vg_lerpf( 0.4f, 1.4f, k_cam_height );
  74       v3_copy( (v3f){0.0f,h,0.0f}, cc->tpv_offset );
  75       v3_add( cc->tpv_offset_extra, cc->tpv_offset, cc->tpv_offset );
  76    }
  77
  78    localplayer.cam_velocity_constant = 0.25f;
  79    localplayer.cam_velocity_coefficient = 0.7f;
  80
  81    /* lerping */
  82
  83    localplayer.cam_velocity_influence_smooth = vg_lerpf(
  84          localplayer.cam_velocity_influence_smooth,
  85          localplayer.cam_velocity_influence,
  86          vg.time_frame_delta * 8.0f );
  87
  88    localplayer.cam_velocity_coefficient_smooth = vg_lerpf(
  89          localplayer.cam_velocity_coefficient_smooth,
  90          localplayer.cam_velocity_coefficient,
  91          vg.time_frame_delta * 8.0f );
  92
  93    localplayer.cam_velocity_constant_smooth = vg_lerpf(
  94          localplayer.cam_velocity_constant_smooth,
  95          localplayer.cam_velocity_constant,
  96          vg.time_frame_delta * 8.0f );
  97
  98    enum camera_mode target_mode = cc->camera_mode;
  99
 100    if( localplayer.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    localplayer.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( localplayer.final_mtx[ localplayer.id_head-1 ],
 130                cc->fpv_viewpoint_smooth, fpv_pos );
 131    m3x3_mulv( localplayer.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, localplayer.rb.v, 4.0f*vg.time_frame_delta,
 137             cc->cam_velocity_smooth );
 138
 139    v3f velocity_local;
 140    m3x3_mulv( localplayer.invbasis, cc->cam_velocity_smooth, velocity_local );
 141    player_vector_angles( velocity_angles, velocity_local,
 142                          localplayer.cam_velocity_coefficient_smooth,
 143                          localplayer.cam_velocity_constant_smooth );
 144
 145    float inf_fpv = localplayer.cam_velocity_influence_smooth *
 146                      cc->camera_type_blend,
 147          inf_tpv = localplayer.cam_velocity_influence_smooth *
 148                      (1.0f-cc->camera_type_blend);
 149
 150    camera_lerp_angles( localplayer.angles, velocity_angles,
 151                         inf_fpv,
 152                         localplayer.angles );
 153
 154    /*
 155     * Third person camera
 156     */
 157
 158    /* no idea what this technique is called, it acts like clamped position based
 159     * on some derivative of where the final camera would end up ....
 160     *
 161     * it is done in the local basis then transformed back */
 162
 163    v3f future;
 164    v3_muls( localplayer.rb.v, 0.4f*vg.time_frame_delta, future );
 165    m3x3_mulv( localplayer.invbasis, future, future );
 166
 167    v3f camera_follow_dir =
 168       { -sinf( localplayer.angles[0] ) * cosf( localplayer.angles[1] ),
 169          sinf( localplayer.angles[1] ),
 170          cosf( localplayer.angles[0] ) * cosf( localplayer.angles[1] ) };
 171
 172    v3f v0;
 173    v3_sub( camera_follow_dir, future, v0 );
 174
 175    v3f follow_angles;
 176    v3_copy( localplayer.angles, follow_angles );
 177    follow_angles[0] = atan2f( -v0[0], v0[2] );
 178    follow_angles[1] = 0.3f + velocity_angles[1] * 0.2f;
 179
 180    float ya = atan2f( -velocity_local[1], 30.0f );
 181
 182    follow_angles[1] = 0.3f + ya;
 183    camera_lerp_angles( localplayer.angles, follow_angles,
 184                         inf_tpv,
 185                         localplayer.angles );
 186
 187    v3f pco;
 188    v4f pq;
 189    rb_extrapolate( &localplayer.rb, pco, pq );
 190    v3_muladds( pco, localplayer.holdout_pose.root_co,
 191                localplayer.holdout_time, pco );
 192    v3_lerp( cc->tpv_lpf, pco, 20.0f*vg.time_frame_delta, cc->tpv_lpf );
 193
 194    /* now move into world */
 195    v3f tpv_pos, tpv_offset, tpv_origin;
 196
 197    /* origin */
 198    q_mulv( pq, cc->tpv_offset_smooth, tpv_origin );
 199    v3_add( tpv_origin, cc->tpv_lpf, tpv_origin );
 200
 201    /* offset */
 202    m3x3_mulv( localplayer.basis, camera_follow_dir, camera_follow_dir );
 203    v3_muls( camera_follow_dir, 1.8f, tpv_offset );
 204    v3_muladds( tpv_offset, cc->cam_velocity_smooth, -0.025f, tpv_offset );
 205
 206    v3_add( tpv_origin, tpv_offset, tpv_pos );
 207
 208    /*
 209     * Blend cameras
 210     */
 211    v3_lerp( tpv_pos, fpv_pos, cc->camera_type_blend, localplayer.cam.pos );
 212    v3_copy( localplayer.angles, localplayer.cam.angles );
 213
 214    /* Camera shake */
 215    f32 speed = v3_length(localplayer.rb.v),
 216        strength = k_cam_shake_strength * speed;
 217    localplayer.cam_trackshake +=
 218       speed*k_cam_shake_trackspeed*vg.time_frame_delta;
 219
 220    v2f rnd = {perlin1d( localplayer.cam_trackshake, 1.0f, 4, 20 ),
 221               perlin1d( localplayer.cam_trackshake, 1.0f, 4, 63 ) };
 222    v2_muladds( localplayer.cam.angles, rnd, strength, localplayer.cam.angles );
 223
 224    v3f Fd, Fs, F;
 225    v3_muls( localplayer.cam_land_punch_v, -k_cam_damp, Fd );
 226    v3_muls( localplayer.cam_land_punch, -k_cam_spring, Fs );
 227    v3_muladds( localplayer.cam_land_punch, localplayer.cam_land_punch_v,
 228                vg.time_frame_delta, localplayer.cam_land_punch );
 229    v3_add( Fd, Fs, F );
 230    v3_muladds( localplayer.cam_land_punch_v, F, vg.time_frame_delta,
 231                localplayer.cam_land_punch_v );
 232    v3_add( localplayer.cam_land_punch, localplayer.cam.pos,
 233            localplayer.cam.pos );
 234
 235    if( k_cinema >= 0.0001f ){
 236       ent_camera *cam = NULL;
 237       f32 min_dist = k_cinema;
 238
 239       world_instance *world = localplayer.viewable_world;
 240       for( u32 i=0; i<mdl_arrcount(&world->ent_camera); i++ ){
 241          ent_camera *c = mdl_arritm(&world->ent_camera,i);
 242
 243          f32 dist = v3_dist( c->transform.co, localplayer.rb.co );
 244
 245          if( dist < min_dist ){
 246             min_dist = dist;
 247             cam = c;
 248          }
 249       }
 250
 251       if( cam ){
 252          localplayer.cam.fov = cam->fov;
 253          v3_copy( cam->transform.co, localplayer.cam.pos );
 254          v3f v0;
 255          if( k_cinema_fixed )
 256             mdl_transform_vector( &cam->transform, (v3f){0.0f,-1.0f,0.0f}, v0 );
 257          else v3_sub( localplayer.rb.co, cam->transform.co, v0 );
 258          m3x3_mulv( localplayer.invbasis, v0, v0 );
 259          player_vector_angles( localplayer.cam.angles, v0, 1.0f, 0.0f );
 260       }
 261    }
 262
 263    /* portal transitions */
 264    player_camera_portal_correction();
 265 }
 266
 267 static void player_look( v3f angles, float speed ){
 268    if( vg_ui.wants_mouse ) return;
 269
 270    angles[2] = 0.0f;
 271
 272    v2f mouse_input;
 273    v2_copy( vg.mouse_delta, mouse_input );
 274    if( k_invert_y ) mouse_input[1] *= -1.0f;
 275    v2_muladds( angles, mouse_input, 0.0025f * speed, angles );
 276
 277    v2f jlook;
 278    joystick_state( k_srjoystick_look, jlook );
 279
 280    angles[0] += jlook[0] * vg.time_frame_delta * 4.0f * speed;
 281    float input_y = jlook[1] * vg.time_frame_delta * 4.0f;
 282    if( k_invert_y ) input_y *= -1.0f;
 283
 284    angles[1] += input_y * speed;
 285    angles[1] = vg_clampf( angles[1], -VG_PIf*0.5f, VG_PIf*0.5f );
 286 }
 287
 288 #endif /* PLAYER_COMMON_C */