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 float player_get_heading_yaw(void){
  11    v3f xz;
  12    q_mulv( localplayer.rb.q, (v3f){ 0.0f,0.0f,1.0f }, xz );
  13    return atan2f( xz[0], xz[2] );
  14 }
  15
  16 static void player_camera_portal_correction(void){
  17    if( localplayer.gate_waiting ){
  18       /* construct plane equation for reciever gate */
  19       v4f plane;
  20       q_mulv( localplayer.gate_waiting->q[1], (v3f){0.0f,0.0f,1.0f}, plane );
  21       plane[3] = v3_dot( plane, localplayer.gate_waiting->co[1] );
  22
  23       f32 pol = v3_dot( localplayer.cam.pos, plane ) - plane[3];
  24
  25       /* check camera polarity */
  26       if( (pol < 0.0f) || (pol > 5.0f) ) {
  27          vg_success( "Plane cleared\n" );
  28          player_apply_transport_to_cam( localplayer.gate_waiting->transport );
  29          localplayer.gate_waiting = NULL;
  30          localplayer.viewable_world = world_current_instance();
  31       }
  32       else{
  33          /* de-transform camera and player back */
  34          m4x3f inverse;
  35          m4x3_invert_affine( localplayer.gate_waiting->transport, inverse );
  36          m4x3_mulv( inverse, localplayer.cam.pos, localplayer.cam.pos );
  37
  38          v3f v0;
  39          v3_angles_vector( localplayer.cam.angles, v0 );
  40          m3x3_mulv( inverse, v0, v0 );
  41          v3_angles( v0, localplayer.cam.angles );
  42
  43          skeleton_apply_transform( &localplayer.skeleton, inverse,
  44                                     localplayer.final_mtx );
  45       }
  46    }
  47 }
  48
  49 static void player__cam_iterate(void){
  50    struct player_cam_controller *cc = &localplayer.cam_control;
  51
  52    if( localplayer.subsystem == k_player_subsystem_walk ){
  53       v3_copy( (v3f){-0.1f,1.8f,0.0f}, cc->fpv_viewpoint );
  54       v3_copy( (v3f){0.0f,0.0f,0.0f}, cc->fpv_offset );
  55       v3_copy( (v3f){0.0f,1.4f,0.0f}, cc->tpv_offset );
  56    }
  57    else{
  58       v3_copy( (v3f){-0.15f,1.75f,0.0f}, cc->fpv_viewpoint );
  59       v3_copy( (v3f){0.0f,0.0f,0.0f}, cc->fpv_offset );
  60
  61       f32 h = vg_lerpf( 0.4f, 1.4f, k_cam_height );
  62       v3_copy( (v3f){0.0f,h,0.0f}, cc->tpv_offset );
  63       v3_add( cc->tpv_offset_extra, cc->tpv_offset, cc->tpv_offset );
  64    }
  65
  66    localplayer.cam_velocity_constant = 0.25f;
  67    localplayer.cam_velocity_coefficient = 0.7f;
  68
  69    /* lerping */
  70
  71    localplayer.cam_velocity_influence_smooth = vg_lerpf(
  72          localplayer.cam_velocity_influence_smooth,
  73          localplayer.cam_velocity_influence,
  74          vg.time_frame_delta * 8.0f );
  75
  76    localplayer.cam_velocity_coefficient_smooth = vg_lerpf(
  77          localplayer.cam_velocity_coefficient_smooth,
  78          localplayer.cam_velocity_coefficient,
  79          vg.time_frame_delta * 8.0f );
  80
  81    localplayer.cam_velocity_constant_smooth = vg_lerpf(
  82          localplayer.cam_velocity_constant_smooth,
  83          localplayer.cam_velocity_constant,
  84          vg.time_frame_delta * 8.0f );
  85
  86    enum camera_mode target_mode = cc->camera_mode;
  87
  88    if( localplayer.subsystem == k_player_subsystem_dead )
  89       target_mode = k_cam_thirdperson;
  90
  91    cc->camera_type_blend =
  92       vg_lerpf( cc->camera_type_blend,
  93                (target_mode == k_cam_firstperson)? 1.0f: 0.0f,
  94                 5.0f * vg.time_frame_delta );
  95
  96    v3_lerp( cc->fpv_viewpoint_smooth, cc->fpv_viewpoint,
  97             vg.time_frame_delta * 8.0f, cc->fpv_viewpoint_smooth );
  98
  99    v3_lerp( cc->fpv_offset_smooth, cc->fpv_offset,
 100             vg.time_frame_delta * 8.0f, cc->fpv_offset_smooth );
 101
 102    v3_lerp( cc->tpv_offset_smooth, cc->tpv_offset,
 103             vg.time_frame_delta * 8.0f, cc->tpv_offset_smooth );
 104
 105    /* fov -- simple blend */
 106    float fov_skate = vg_lerpf( 97.0f, 135.0f, k_fov ),
 107          fov_walk  = vg_lerpf( 90.0f, 110.0f, k_fov );
 108
 109    localplayer.cam.fov = vg_lerpf( fov_walk, fov_skate, cc->camera_type_blend );
 110
 111    /*
 112     * first person camera
 113     */
 114
 115    /* position */
 116    v3f fpv_pos, fpv_offset;
 117    m4x3_mulv( localplayer.final_mtx[ localplayer.id_head-1 ],
 118                cc->fpv_viewpoint_smooth, fpv_pos );
 119    m3x3_mulv( localplayer.rb.to_world, cc->fpv_offset_smooth, fpv_offset );
 120    v3_add( fpv_offset, fpv_pos, fpv_pos );
 121
 122    /* angles */
 123    v3f velocity_angles;
 124    v3_lerp( cc->cam_velocity_smooth, localplayer.rb.v, 4.0f*vg.time_frame_delta,
 125             cc->cam_velocity_smooth );
 126
 127    v3_angles( cc->cam_velocity_smooth, velocity_angles );
 128    velocity_angles[1] *= localplayer.cam_velocity_coefficient_smooth;
 129    velocity_angles[1] += localplayer.cam_velocity_constant_smooth;
 130
 131    float inf_fpv = localplayer.cam_velocity_influence_smooth *
 132                      cc->camera_type_blend,
 133          inf_tpv = localplayer.cam_velocity_influence_smooth *
 134                      (1.0f-cc->camera_type_blend);
 135
 136    camera_lerp_angles( localplayer.angles, velocity_angles,
 137                         inf_fpv,
 138                         localplayer.angles );
 139
 140    /*
 141     * Third person camera
 142     */
 143
 144    /* no idea what this technique is called, it acts like clamped position based
 145     * on some derivative of where the final camera would end up ....
 146     *
 147     * it is done in the local basis then transformed back */
 148
 149    v3f future;
 150    v3_muls( localplayer.rb.v, 0.4f*vg.time_frame_delta, future );
 151
 152    v3f camera_follow_dir =
 153       { -sinf( localplayer.angles[0] ) * cosf( localplayer.angles[1] ),
 154          sinf( localplayer.angles[1] ),
 155          cosf( localplayer.angles[0] ) * cosf( localplayer.angles[1] ) };
 156
 157    v3f v0;
 158    v3_sub( camera_follow_dir, future, v0 );
 159
 160    v3f follow_angles;
 161    v3_copy( localplayer.angles, follow_angles );
 162    follow_angles[0] = atan2f( -v0[0], v0[2] );
 163    follow_angles[1] = 0.3f + velocity_angles[1] * 0.2f;
 164
 165    float ya = atan2f( -cc->cam_velocity_smooth[1], 30.0f );
 166
 167    follow_angles[1] = 0.3f + ya;
 168    camera_lerp_angles( localplayer.angles, follow_angles,
 169                         inf_tpv,
 170                         localplayer.angles );
 171
 172    v3f pco;
 173    v4f pq;
 174    rb_extrapolate( &localplayer.rb, pco, pq );
 175    v3_muladds( pco, localplayer.holdout_pose.root_co,
 176                localplayer.holdout_time, pco );
 177    v3_lerp( cc->tpv_lpf, pco, 20.0f*vg.time_frame_delta, cc->tpv_lpf );
 178
 179    /* now move into world */
 180    v3f tpv_pos, tpv_offset, tpv_origin;
 181
 182    /* origin */
 183    q_mulv( pq, cc->tpv_offset_smooth, tpv_origin );
 184    v3_add( tpv_origin, cc->tpv_lpf, tpv_origin );
 185
 186    /* offset */
 187    v3_muls( camera_follow_dir, 1.8f, tpv_offset );
 188    v3_muladds( tpv_offset, cc->cam_velocity_smooth, -0.025f, tpv_offset );
 189
 190    v3_add( tpv_origin, tpv_offset, tpv_pos );
 191
 192    /*
 193     * Blend cameras
 194     */
 195    v3_lerp( tpv_pos, fpv_pos, cc->camera_type_blend, localplayer.cam.pos );
 196    v3_copy( localplayer.angles, localplayer.cam.angles );
 197
 198    /* Camera shake */
 199    f32 speed = v3_length(localplayer.rb.v),
 200        strength = k_cam_shake_strength * speed;
 201    localplayer.cam_trackshake +=
 202       speed*k_cam_shake_trackspeed*vg.time_frame_delta;
 203
 204    v2f rnd = {perlin1d( localplayer.cam_trackshake, 1.0f, 4, 20 ),
 205               perlin1d( localplayer.cam_trackshake, 1.0f, 4, 63 ) };
 206    v2_muladds( localplayer.cam.angles, rnd, strength, localplayer.cam.angles );
 207
 208    v3f Fd, Fs, F;
 209    v3_muls( localplayer.cam_land_punch_v, -k_cam_damp, Fd );
 210    v3_muls( localplayer.cam_land_punch, -k_cam_spring, Fs );
 211    v3_muladds( localplayer.cam_land_punch, localplayer.cam_land_punch_v,
 212                vg.time_frame_delta, localplayer.cam_land_punch );
 213    v3_add( Fd, Fs, F );
 214    v3_muladds( localplayer.cam_land_punch_v, F, vg.time_frame_delta,
 215                localplayer.cam_land_punch_v );
 216    v3_add( localplayer.cam_land_punch, localplayer.cam.pos,
 217            localplayer.cam.pos );
 218
 219    if( k_cinema >= 0.0001f ){
 220       ent_camera *cam = NULL;
 221       f32 min_dist = k_cinema;
 222
 223       world_instance *world = localplayer.viewable_world;
 224       for( u32 i=0; i<mdl_arrcount(&world->ent_camera); i++ ){
 225          ent_camera *c = mdl_arritm(&world->ent_camera,i);
 226
 227          f32 dist = v3_dist( c->transform.co, localplayer.rb.co );
 228
 229          if( dist < min_dist ){
 230             min_dist = dist;
 231             cam = c;
 232          }
 233       }
 234
 235       if( cam ){
 236          localplayer.cam.fov = cam->fov;
 237          v3_copy( cam->transform.co, localplayer.cam.pos );
 238          v3f v0;
 239          if( k_cinema_fixed )
 240             mdl_transform_vector( &cam->transform, (v3f){0.0f,-1.0f,0.0f}, v0 );
 241          else
 242             v3_sub( localplayer.rb.co, cam->transform.co, v0 );
 243
 244          v3_angles( v0, localplayer.cam.angles );
 245       }
 246    }
 247
 248    /* portal transitions */
 249    player_camera_portal_correction();
 250 }
 251
 252 static void player_look( v3f angles, float speed ){
 253    if( vg_ui.wants_mouse ) return;
 254
 255    angles[2] = 0.0f;
 256
 257    v2f mouse_input;
 258    v2_copy( vg.mouse_delta, mouse_input );
 259    if( k_invert_y ) mouse_input[1] *= -1.0f;
 260    v2_muladds( angles, mouse_input, 0.0025f * speed, angles );
 261
 262    v2f jlook;
 263    joystick_state( k_srjoystick_look, jlook );
 264
 265    angles[0] += jlook[0] * vg.time_frame_delta * 4.0f * speed;
 266    float input_y = jlook[1] * vg.time_frame_delta * 4.0f;
 267    if( k_invert_y ) input_y *= -1.0f;
 268
 269    angles[1] += input_y * speed;
 270    angles[1] = vg_clampf( angles[1], -VG_PIf*0.5f, VG_PIf*0.5f );
 271 }
 272
 273 #endif /* PLAYER_COMMON_C */