player_common.c

   1 #ifndef PLAYER_COMMON_C
   2 #define PLAYER_COMMON_C
   3
   4 #include "player.h"
   5 #include "conf.h"
   6
   7 VG_STATIC void player_vector_angles( v3f angles, v3f v, float C, float k )
   8 {
   9    float yaw = atan2f( v[0], -v[2] ),
  10        pitch = atan2f
  11                (
  12                    -v[1],
  13                    sqrtf
  14                    (
  15                      v[0]*v[0] + v[2]*v[2]
  16                    )
  17                ) * C + k;
  18
  19    angles[0] = yaw;
  20    angles[1] = pitch;
  21    angles[2] = 0.0f;
  22 }
  23
  24 VG_STATIC float player_get_heading_yaw( player_instance *player )
  25 {
  26    v3f xz;
  27    q_mulv( player->rb.q, (v3f){ 0.0f,0.0f,1.0f }, xz );
  28    m3x3_mulv( player->invbasis, xz, xz );
  29    return atan2f( xz[0], xz[2] );
  30 }
  31
  32 VG_STATIC void player_camera_portal_correction( player_instance *player )
  33 {
  34    if( player->gate_waiting ){
  35       /* construct plane equation for reciever gate */
  36       v4f plane;
  37       q_mulv( player->gate_waiting->q[1], (v3f){0.0f,0.0f,1.0f}, plane );
  38       plane[3] = v3_dot( plane, player->gate_waiting->co[1] );
  39
  40       /* check camera polarity */
  41       if( v3_dot( player->cam.pos, plane ) < plane[3] ) {
  42          vg_success( "Plane cleared\n" );
  43          player_apply_transport_to_cam( player->gate_waiting->transport );
  44          player->gate_waiting = NULL;
  45          player->viewable_world = get_active_world();
  46       }
  47       else{
  48          /* de-transform camera and player back */
  49          m4x3f inverse;
  50          m4x3_invert_affine( player->gate_waiting->transport, inverse );
  51          m4x3_mulv( inverse, player->cam.pos, player->cam.pos );
  52
  53          struct skeleton *sk = &player->playeravatar->sk;
  54          skeleton_apply_transform( sk, inverse );
  55       }
  56    }
  57 }
  58
  59 static v3f TEMP_TPV_EXTRA;
  60
  61 VG_STATIC void player__cam_iterate( player_instance *player )
  62 {
  63    struct player_avatar *av = player->playeravatar;
  64
  65    if( player->subsystem == k_player_subsystem_walk ){
  66       v3_copy( (v3f){-0.1f,1.8f,0.0f}, player->fpv_viewpoint );
  67       v3_copy( (v3f){0.0f,0.0f,0.0f}, player->fpv_offset );
  68       v3_copy( (v3f){0.0f,1.4f,0.0f}, player->tpv_offset );
  69    }
  70    else{
  71       v3_copy( (v3f){-0.15f,1.75f,0.0f}, player->fpv_viewpoint );
  72 #if 0
  73       v3_copy( (v3f){-0.35f,0.0f,0.0f}, player->fpv_offset );
  74 #endif
  75       v3_copy( (v3f){0.0f,0.0f,0.0f}, player->fpv_offset );
  76       v3_copy( (v3f){0.0f,1.4f,0.0f}, player->tpv_offset );
  77       v3_add( TEMP_TPV_EXTRA, player->tpv_offset, player->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.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.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.frame_delta * 8.0f );
  99
 100    enum camera_mode target_mode = player->camera_mode;
 101
 102    if( player->subsystem == k_player_subsystem_dead )
 103       target_mode = k_cam_thirdperson;
 104
 105    player->camera_type_blend =
 106       vg_lerpf( player->camera_type_blend,
 107                 (target_mode == k_cam_firstperson)? 1.0f: 0.0f,
 108                 5.0f * vg.frame_delta );
 109
 110    v3_lerp( player->fpv_viewpoint_smooth, player->fpv_viewpoint,
 111          vg.frame_delta * 8.0f, player->fpv_viewpoint_smooth );
 112
 113    v3_lerp( player->fpv_offset_smooth, player->fpv_offset,
 114          vg.frame_delta * 8.0f, player->fpv_offset_smooth );
 115
 116    v3_lerp( player->tpv_offset_smooth, player->tpv_offset,
 117          vg.frame_delta * 8.0f, player->tpv_offset_smooth );
 118
 119    /* fov -- simple blend */
 120    float fov_skate = vg_lerpf( 97.0f, 135.0f, cl_fov ),
 121          fov_walk  = vg_lerpf( 90.0f, 110.0f, cl_fov );
 122
 123    player->cam.fov = vg_lerpf( fov_walk, fov_skate, player->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                player->fpv_viewpoint_smooth, fpv_pos );
 133    m3x3_mulv( player->rb.to_world, player->fpv_offset_smooth, fpv_offset );
 134    v3_add( fpv_offset, fpv_pos, fpv_pos );
 135
 136    /* angles */
 137    v3f velocity_angles;
 138    v3_lerp( player->cam_velocity_smooth, player->rb.v, 4.0f*vg.frame_delta,
 139             player->cam_velocity_smooth );
 140
 141    v3f velocity_local;
 142    m3x3_mulv( player->invbasis, player->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 *
 148                    player->camera_type_blend,
 149          inf_tpv = player->cam_velocity_influence_smooth *
 150                    (1.0f-player->camera_type_blend);
 151
 152    camera_lerp_angles( player->angles, velocity_angles,
 153                         inf_fpv,
 154                         player->angles );
 155
 156    /*
 157     * Third person camera
 158     */
 159
 160    /* no idea what this technique is called, it acts like clamped position based
 161     * on some derivative of where the final camera would end up ....
 162     *
 163     * it is done in the local basis then transformed back */
 164
 165    v3f future;
 166    v3_muls( player->rb.v, 0.4f*vg.frame_delta, future );
 167    m3x3_mulv( player->invbasis, future, future );
 168
 169    v3f camera_follow_dir =
 170       { -sinf( player->angles[0] ) * cosf( player->angles[1] ),
 171          sinf( player->angles[1] ),
 172          cosf( player->angles[0] ) * cosf( player->angles[1] ) };
 173
 174    v3f v0;
 175    v3_sub( camera_follow_dir, future, v0 );
 176
 177    v3f follow_angles;
 178    v3_copy( player->angles, follow_angles );
 179    follow_angles[0] = atan2f( -v0[0], v0[2] );
 180    follow_angles[1] = 0.3f + velocity_angles[1] * 0.2f;
 181
 182    float ya = atan2f( -velocity_local[1], 30.0f );
 183
 184    follow_angles[1] = 0.3f + ya;
 185    camera_lerp_angles( player->angles, follow_angles,
 186                         inf_tpv,
 187                         player->angles );
 188
 189    v3f pco;
 190    v4f pq;
 191    rb_extrapolate( &player->rb, pco, pq );
 192    v3_lerp( player->tpv_lpf, pco, 20.0f*vg.frame_delta, player->tpv_lpf );
 193
 194    /* now move into world */
 195
 196    m3x3_mulv( player->basis, camera_follow_dir, camera_follow_dir );
 197    v3f tpv_pos, tpv_offset;
 198
 199    v3_muladds( player->tpv_lpf, camera_follow_dir, 1.8f, tpv_pos );
 200    q_mulv( pq, player->tpv_offset_smooth, tpv_offset );
 201    v3_add( tpv_offset, tpv_pos, tpv_pos );
 202    v3_muladds( tpv_pos, player->cam_velocity_smooth, -0.025f, tpv_pos );
 203
 204    /*
 205     * Blend cameras
 206     */
 207    v3_lerp( tpv_pos, fpv_pos, player->camera_type_blend, player->cam.pos );
 208    v3_copy( player->angles, player->cam.angles );
 209
 210    float Fd = -player->cam_land_punch_v * k_cam_damp,
 211          Fs = -player->cam_land_punch   * k_cam_spring;
 212    player->cam_land_punch   += player->cam_land_punch_v * vg.frame_delta;
 213    player->cam_land_punch_v += ( Fd + Fs ) * vg.frame_delta;
 214    player->cam.angles[1] += player->cam_land_punch;
 215
 216    /* override camera */
 217    player->cam.angles[0] =
 218       vg_alerpf(  player->cam.angles[0], player->cam_override_angles[0],
 219                   player->cam_override_strength );
 220    player->cam.angles[1] =
 221       vg_lerpf ( player->cam.angles[1], player->cam_override_angles[1],
 222                  player->cam_override_strength );
 223    v3_lerp( player->cam.pos, player->cam_override_pos,
 224             player->cam_override_strength, player->cam.pos );
 225
 226    /* portal transitions */
 227    player_camera_portal_correction( player );
 228 }
 229
 230 VG_STATIC void player_look( player_instance *player, v3f angles )
 231 {
 232    angles[2] = 0.0f;
 233
 234    v2f mouse_input;
 235    v2_copy( vg.mouse_delta, mouse_input );
 236    if( cl_invert_y )
 237       mouse_input[1] *= -1.0f;
 238    v2_muladds( angles, mouse_input, 0.0025f, angles );
 239
 240    if( vg_input.controller_should_use_trackpad_look ){
 241       static v2f last_input;
 242       static v2f vel;
 243       static v2f vel_smooth;
 244
 245       v2f input = { player->input_js2h->axis.value,
 246                     player->input_js2v->axis.value };
 247
 248       if( cl_invert_y )
 249          input[1] *= -1.0f;
 250
 251       if( (v2_length2(last_input) > 0.001f) && (v2_length2(input) > 0.001f) ){
 252          v2_sub( input, last_input, vel );
 253          v2_muls( vel, 1.0f/vg.time_delta, vel );
 254       }
 255       else{
 256          v2_zero( vel );
 257       }
 258
 259       v2_lerp( vel_smooth, vel, vg.time_delta*8.0f, vel_smooth );
 260
 261       v2_muladds( angles, vel_smooth, vg.time_delta, angles );
 262       v2_copy( input, last_input );
 263    }
 264    else{
 265       angles[0] += player->input_js2h->axis.value * vg.time_delta * 4.0f;
 266
 267       float input_y = player->input_js2v->axis.value * vg.time_delta * 4.0f;
 268       if( cl_invert_y )
 269          input_y *= -1.0f;
 270
 271       angles[1] += input_y;
 272    }
 273
 274    angles[1] = vg_clampf( angles[1], -VG_PIf*0.5f, VG_PIf*0.5f );
 275 }
 276
 277 #endif /* PLAYER_COMMON_C */