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 "conf.h"
   7 #include "input.h"
   8 #include "menu.h"
   9
  10 VG_STATIC float
  11    k_cam_spring            = 20.0f,
  12    k_cam_damp              = 6.7f;
  13
  14 VG_STATIC void player_vector_angles( v3f angles, v3f v, float C, float k )
  15 {
  16    float yaw = atan2f( v[0], -v[2] ),
  17        pitch = atan2f
  18                (
  19                    -v[1],
  20                    sqrtf
  21                    (
  22                      v[0]*v[0] + v[2]*v[2]
  23                    )
  24                ) * C + k;
  25
  26    angles[0] = yaw;
  27    angles[1] = pitch;
  28    angles[2] = 0.0f;
  29 }
  30
  31 VG_STATIC float player_get_heading_yaw( player_instance *player )
  32 {
  33    v3f xz;
  34    q_mulv( player->rb.q, (v3f){ 0.0f,0.0f,1.0f }, xz );
  35    m3x3_mulv( player->invbasis, xz, xz );
  36    return atan2f( xz[0], xz[2] );
  37 }
  38
  39 VG_STATIC void player_camera_portal_correction( player_instance *player )
  40 {
  41    if( player->gate_waiting ){
  42       /* construct plane equation for reciever gate */
  43       v4f plane;
  44       q_mulv( player->gate_waiting->q[1], (v3f){0.0f,0.0f,1.0f}, plane );
  45       plane[3] = v3_dot( plane, player->gate_waiting->co[1] );
  46
  47       /* check camera polarity */
  48       if( v3_dot( player->cam.pos, plane ) < plane[3] ) {
  49          vg_success( "Plane cleared\n" );
  50          player_apply_transport_to_cam( player->gate_waiting->transport );
  51          player->gate_waiting = NULL;
  52          player->viewable_world = get_active_world();
  53       }
  54       else{
  55          /* de-transform camera and player back */
  56          m4x3f inverse;
  57          m4x3_invert_affine( player->gate_waiting->transport, inverse );
  58          m4x3_mulv( inverse, player->cam.pos, player->cam.pos );
  59
  60          struct skeleton *sk = &player->playeravatar->sk;
  61          skeleton_apply_transform( sk, inverse );
  62       }
  63    }
  64 }
  65
  66 static v3f TEMP_TPV_EXTRA;
  67
  68 VG_STATIC void player__cam_iterate( player_instance *player )
  69 {
  70    struct player_avatar *av = player->playeravatar;
  71
  72    if( player->subsystem == k_player_subsystem_walk ){
  73       v3_copy( (v3f){-0.1f,1.8f,0.0f}, player->fpv_viewpoint );
  74       v3_copy( (v3f){0.0f,0.0f,0.0f}, player->fpv_offset );
  75       v3_copy( (v3f){0.0f,1.4f,0.0f}, player->tpv_offset );
  76    }
  77    else{
  78       v3_copy( (v3f){-0.15f,1.75f,0.0f}, player->fpv_viewpoint );
  79 #if 0
  80       v3_copy( (v3f){-0.35f,0.0f,0.0f}, player->fpv_offset );
  81 #endif
  82       v3_copy( (v3f){0.0f,0.0f,0.0f}, player->fpv_offset );
  83       v3_copy( (v3f){0.0f,1.4f,0.0f}, player->tpv_offset );
  84       v3_add( TEMP_TPV_EXTRA, player->tpv_offset, player->tpv_offset );
  85    }
  86
  87    player->cam_velocity_constant = 0.25f;
  88    player->cam_velocity_coefficient = 0.7f;
  89
  90    /* lerping */
  91
  92    player->cam_velocity_influence_smooth = vg_lerpf(
  93          player->cam_velocity_influence_smooth,
  94          player->cam_velocity_influence,
  95          vg.time_frame_delta * 8.0f );
  96
  97    player->cam_velocity_coefficient_smooth = vg_lerpf(
  98          player->cam_velocity_coefficient_smooth,
  99          player->cam_velocity_coefficient,
 100          vg.time_frame_delta * 8.0f );
 101
 102    player->cam_velocity_constant_smooth = vg_lerpf(
 103          player->cam_velocity_constant_smooth,
 104          player->cam_velocity_constant,
 105          vg.time_frame_delta * 8.0f );
 106
 107    enum camera_mode target_mode = player->camera_mode;
 108
 109    if( player->subsystem == k_player_subsystem_dead )
 110       target_mode = k_cam_thirdperson;
 111
 112    player->camera_type_blend =
 113       vg_lerpf( player->camera_type_blend,
 114                 (target_mode == k_cam_firstperson)? 1.0f: 0.0f,
 115                 5.0f * vg.time_frame_delta );
 116
 117    v3_lerp( player->fpv_viewpoint_smooth, player->fpv_viewpoint,
 118          vg.time_frame_delta * 8.0f, player->fpv_viewpoint_smooth );
 119
 120    v3_lerp( player->fpv_offset_smooth, player->fpv_offset,
 121          vg.time_frame_delta * 8.0f, player->fpv_offset_smooth );
 122
 123    v3_lerp( player->tpv_offset_smooth, player->tpv_offset,
 124          vg.time_frame_delta * 8.0f, player->tpv_offset_smooth );
 125
 126    /* fov -- simple blend */
 127    float fov_skate = vg_lerpf( 97.0f, 135.0f, cl_fov ),
 128          fov_walk  = vg_lerpf( 90.0f, 110.0f, cl_fov );
 129
 130    player->cam.fov = vg_lerpf( fov_walk, fov_skate, player->camera_type_blend );
 131
 132    /*
 133     * first person camera
 134     */
 135
 136    /* position */
 137    v3f fpv_pos, fpv_offset;
 138    m4x3_mulv( av->sk.final_mtx[ av->id_head-1 ],
 139                player->fpv_viewpoint_smooth, fpv_pos );
 140    m3x3_mulv( player->rb.to_world, player->fpv_offset_smooth, fpv_offset );
 141    v3_add( fpv_offset, fpv_pos, fpv_pos );
 142
 143    /* angles */
 144    v3f velocity_angles;
 145    v3_lerp( player->cam_velocity_smooth, player->rb.v, 4.0f*vg.time_frame_delta,
 146             player->cam_velocity_smooth );
 147
 148    v3f velocity_local;
 149    m3x3_mulv( player->invbasis, player->cam_velocity_smooth, velocity_local );
 150    player_vector_angles( velocity_angles, velocity_local,
 151                          player->cam_velocity_coefficient_smooth,
 152                          player->cam_velocity_constant_smooth );
 153
 154    float inf_fpv = player->cam_velocity_influence_smooth *
 155                    player->camera_type_blend,
 156          inf_tpv = player->cam_velocity_influence_smooth *
 157                    (1.0f-player->camera_type_blend);
 158
 159    camera_lerp_angles( player->angles, velocity_angles,
 160                         inf_fpv,
 161                         player->angles );
 162
 163    /*
 164     * Third person camera
 165     */
 166
 167    /* no idea what this technique is called, it acts like clamped position based
 168     * on some derivative of where the final camera would end up ....
 169     *
 170     * it is done in the local basis then transformed back */
 171
 172    v3f future;
 173    v3_muls( player->rb.v, 0.4f*vg.time_frame_delta, future );
 174    m3x3_mulv( player->invbasis, future, future );
 175
 176    v3f camera_follow_dir =
 177       { -sinf( player->angles[0] ) * cosf( player->angles[1] ),
 178          sinf( player->angles[1] ),
 179          cosf( player->angles[0] ) * cosf( player->angles[1] ) };
 180
 181    v3f v0;
 182    v3_sub( camera_follow_dir, future, v0 );
 183
 184    v3f follow_angles;
 185    v3_copy( player->angles, follow_angles );
 186    follow_angles[0] = atan2f( -v0[0], v0[2] );
 187    follow_angles[1] = 0.3f + velocity_angles[1] * 0.2f;
 188
 189    float ya = atan2f( -velocity_local[1], 30.0f );
 190
 191    follow_angles[1] = 0.3f + ya;
 192    camera_lerp_angles( player->angles, follow_angles,
 193                         inf_tpv,
 194                         player->angles );
 195
 196    v3f pco;
 197    v4f pq;
 198    rb_extrapolate( &player->rb, pco, pq );
 199    v3_lerp( player->tpv_lpf, pco, 20.0f*vg.time_frame_delta, player->tpv_lpf );
 200
 201    /* now move into world */
 202
 203    m3x3_mulv( player->basis, camera_follow_dir, camera_follow_dir );
 204    v3f tpv_pos, tpv_offset;
 205
 206    v3_muladds( player->tpv_lpf, camera_follow_dir, 1.8f, tpv_pos );
 207    q_mulv( pq, player->tpv_offset_smooth, tpv_offset );
 208    v3_add( tpv_offset, tpv_pos, tpv_pos );
 209    v3_muladds( tpv_pos, player->cam_velocity_smooth, -0.025f, tpv_pos );
 210
 211    /*
 212     * Blend cameras
 213     */
 214    v3_lerp( tpv_pos, fpv_pos, player->camera_type_blend, player->cam.pos );
 215    v3_copy( player->angles, player->cam.angles );
 216
 217    float Fd = -player->cam_land_punch_v * k_cam_damp,
 218          Fs = -player->cam_land_punch   * k_cam_spring;
 219    player->cam_land_punch   += player->cam_land_punch_v * vg.time_frame_delta;
 220    player->cam_land_punch_v += ( Fd + Fs ) * vg.time_frame_delta;
 221    player->cam.angles[1] += player->cam_land_punch;
 222
 223    /* override camera */
 224    player->cam.angles[0] =
 225       vg_alerpf(  player->cam.angles[0], player->cam_override_angles[0],
 226                   player->cam_override_strength );
 227    player->cam.angles[1] =
 228       vg_lerpf ( player->cam.angles[1], player->cam_override_angles[1],
 229                  player->cam_override_strength );
 230    v3_lerp( player->cam.pos, player->cam_override_pos,
 231             player->cam_override_strength, player->cam.pos );
 232    player->cam.fov = vg_lerpf( player->cam.fov, player->cam_override_fov,
 233                                player->cam_override_strength );
 234
 235    /* portal transitions */
 236    player_camera_portal_correction( player );
 237 }
 238
 239 VG_STATIC void player_look( player_instance *player, v3f angles )
 240 {
 241    if( vg_ui.wants_mouse ) return;
 242
 243    float sensitivity = 1.0f-menu.factive;
 244
 245    angles[2] = 0.0f;
 246
 247    v2f mouse_input;
 248    v2_copy( vg.mouse_delta, mouse_input );
 249    if( cl_invert_y ) mouse_input[1] *= -1.0f;
 250    v2_muladds( angles, mouse_input, 0.0025f * sensitivity, angles );
 251
 252    v2f jlook;
 253    joystick_state( k_srjoystick_look, jlook );
 254
 255    angles[0] += jlook[0] * vg.time_delta * 4.0f * sensitivity;
 256    float input_y = jlook[1] * vg.time_delta * 4.0f;
 257    if( cl_invert_y ) input_y *= -1.0f;
 258
 259    angles[1] += input_y * sensitivity;
 260    angles[1] = vg_clampf( angles[1], -VG_PIf*0.5f, VG_PIf*0.5f );
 261 }
 262
 263 struct player_board *player_get_player_board( struct player_instance *player )
 264 {
 265    struct player_board *board = NULL;
 266
 267    if( localplayer.board_view_slot ){
 268       struct cache_board *cache_view = localplayer.board_view_slot;
 269       if( cache_view->state == k_cache_board_state_loaded ){
 270          board = &cache_view->board;
 271       }
 272    }
 273
 274    return board;
 275 }
 276
 277 #endif /* PLAYER_COMMON_C */