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 }
  22
  23 VG_STATIC float player_get_heading_yaw( player_instance *player )
  24 {
  25    v3f xz;
  26    q_mulv( player->rb.q, (v3f){ 0.0f,0.0f,1.0f }, xz );
  27    m3x3_mulv( player->invbasis, xz, xz );
  28    return atan2f( xz[0], xz[2] );
  29 }
  30
  31 VG_STATIC void player_camera_portal_correction( player_instance *player )
  32 {
  33    if( player->gate_waiting ){
  34       /* construct plane equation for reciever gate */
  35       v4f plane;
  36       q_mulv( player->gate_waiting->q[1], (v3f){0.0f,0.0f,1.0f}, plane );
  37       plane[3] = v3_dot( plane, player->gate_waiting->co[1] );
  38
  39       /* check camera polarity */
  40       if( v3_dot( player->cam.pos, plane ) < plane[3] ) {
  41          vg_success( "Plane cleared\n" );
  42          player_apply_transport_to_cam( player->gate_waiting->transport );
  43          player->gate_waiting = NULL;
  44          player->viewable_world = get_active_world();
  45       }
  46       else{
  47          /* de-transform camera and player back */
  48          m4x3f inverse;
  49          m4x3_invert_affine( player->gate_waiting->transport, inverse );
  50          m4x3_mulv( inverse, player->cam.pos, player->cam.pos );
  51
  52          struct skeleton *sk = &player->playeravatar->sk;
  53          skeleton_apply_transform( sk, inverse );
  54       }
  55    }
  56 }
  57
  58 static v3f TEMP_TPV_EXTRA;
  59
  60 VG_STATIC void player__cam_iterate( player_instance *player )
  61 {
  62    struct player_avatar *av = player->playeravatar;
  63
  64    if( player->subsystem == k_player_subsystem_walk ){
  65       v3_copy( (v3f){-0.1f,1.8f,0.0f}, player->fpv_viewpoint );
  66       v3_copy( (v3f){0.0f,0.0f,0.0f}, player->fpv_offset );
  67       v3_copy( (v3f){0.0f,1.4f,0.0f}, player->tpv_offset );
  68    }
  69    else{
  70       v3_copy( (v3f){-0.15f,1.75f,0.0f}, player->fpv_viewpoint );
  71 #if 0
  72       v3_copy( (v3f){-0.35f,0.0f,0.0f}, player->fpv_offset );
  73 #endif
  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       v3_add( TEMP_TPV_EXTRA, player->tpv_offset, player->tpv_offset );
  77    }
  78
  79    player->cam_velocity_constant = 0.25f;
  80    player->cam_velocity_coefficient = 0.7f;
  81
  82    /* lerping */
  83
  84    player->cam_velocity_influence_smooth = vg_lerpf(
  85          player->cam_velocity_influence_smooth,
  86          player->cam_velocity_influence,
  87          vg.frame_delta * 8.0f );
  88
  89    player->cam_velocity_coefficient_smooth = vg_lerpf(
  90          player->cam_velocity_coefficient_smooth,
  91          player->cam_velocity_coefficient,
  92          vg.frame_delta * 8.0f );
  93
  94    player->cam_velocity_constant_smooth = vg_lerpf(
  95          player->cam_velocity_constant_smooth,
  96          player->cam_velocity_constant,
  97          vg.frame_delta * 8.0f );
  98
  99    enum camera_mode target_mode = player->camera_mode;
 100
 101    if( player->subsystem == k_player_subsystem_dead )
 102       target_mode = k_cam_thirdperson;
 103
 104    player->camera_type_blend =
 105       vg_lerpf( player->camera_type_blend,
 106                 (target_mode == k_cam_firstperson)? 1.0f: 0.0f,
 107                 5.0f * vg.frame_delta );
 108
 109    v3_lerp( player->fpv_viewpoint_smooth, player->fpv_viewpoint,
 110          vg.frame_delta * 8.0f, player->fpv_viewpoint_smooth );
 111
 112    v3_lerp( player->fpv_offset_smooth, player->fpv_offset,
 113          vg.frame_delta * 8.0f, player->fpv_offset_smooth );
 114
 115    v3_lerp( player->tpv_offset_smooth, player->tpv_offset,
 116          vg.frame_delta * 8.0f, player->tpv_offset_smooth );
 117
 118    /* fov -- simple blend */
 119    float fov_skate = vg_lerpf( 97.0f, 135.0f, cl_fov ),
 120          fov_walk  = vg_lerpf( 90.0f, 110.0f, cl_fov );
 121
 122    player->cam.fov = vg_lerpf( fov_walk, fov_skate, player->camera_type_blend );
 123
 124    /*
 125     * first person camera
 126     */
 127
 128    /* position */
 129    v3f fpv_pos, fpv_offset;
 130    m4x3_mulv( av->sk.final_mtx[ av->id_head-1 ],
 131                player->fpv_viewpoint_smooth, fpv_pos );
 132    m3x3_mulv( player->rb.to_world, player->fpv_offset_smooth, fpv_offset );
 133    v3_add( fpv_offset, fpv_pos, fpv_pos );
 134
 135    /* angles */
 136    v3f velocity_angles;
 137    v3_lerp( player->cam_velocity_smooth, player->rb.v, 4.0f*vg.frame_delta,
 138             player->cam_velocity_smooth );
 139
 140    v3f velocity_local;
 141    m3x3_mulv( player->invbasis, player->cam_velocity_smooth, velocity_local );
 142    player_vector_angles( velocity_angles, velocity_local,
 143                          player->cam_velocity_coefficient_smooth,
 144                          player->cam_velocity_constant_smooth );
 145
 146    float inf_fpv = player->cam_velocity_influence_smooth *
 147                    player->camera_type_blend,
 148          inf_tpv = player->cam_velocity_influence_smooth *
 149                    (1.0f-player->camera_type_blend);
 150
 151    camera_lerp_angles( player->angles, velocity_angles,
 152                         inf_fpv,
 153                         player->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( player->rb.v, 0.4f*vg.frame_delta, future );
 166    m3x3_mulv( player->invbasis, future, future );
 167
 168    v3f camera_follow_dir =
 169       { -sinf( player->angles[0] ) * cosf( player->angles[1] ),
 170          sinf( player->angles[1] ),
 171          cosf( player->angles[0] ) * cosf( player->angles[1] ) };
 172
 173    v3f v0;
 174    v3_sub( camera_follow_dir, future, v0 );
 175
 176    v3f follow_angles;
 177    v3_copy( player->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( player->angles, follow_angles,
 185                         inf_tpv,
 186                         player->angles );
 187
 188    v3f pco;
 189    v4f pq;
 190    rb_extrapolate( &player->rb, pco, pq );
 191    v3_lerp( player->tpv_lpf, pco, 20.0f*vg.frame_delta, player->tpv_lpf );
 192
 193    /* now move into world */
 194
 195    m3x3_mulv( player->basis, camera_follow_dir, camera_follow_dir );
 196    v3f tpv_pos, tpv_offset;
 197
 198    v3_muladds( player->tpv_lpf, camera_follow_dir, 1.8f, tpv_pos );
 199    q_mulv( pq, player->tpv_offset_smooth, tpv_offset );
 200    v3_add( tpv_offset, tpv_pos, tpv_pos );
 201    v3_muladds( tpv_pos, player->cam_velocity_smooth, -0.025f, tpv_pos );
 202
 203    /*
 204     * Blend cameras
 205     */
 206    v3_lerp( tpv_pos, fpv_pos, player->camera_type_blend, player->cam.pos );
 207    v3_copy( player->angles, player->cam.angles );
 208
 209    float Fd = -player->cam_land_punch_v * k_cam_damp,
 210          Fs = -player->cam_land_punch   * k_cam_spring;
 211    player->cam_land_punch   += player->cam_land_punch_v * vg.frame_delta;
 212    player->cam_land_punch_v += ( Fd + Fs ) * vg.frame_delta;
 213    player->cam.angles[1] += player->cam_land_punch;
 214
 215    /* override camera */
 216    player->cam.angles[0] =
 217       vg_alerpf(  player->cam.angles[0], player->cam_override_angles[0],
 218                   player->cam_override_strength );
 219    player->cam.angles[1] =
 220       vg_lerpf ( player->cam.angles[1], player->cam_override_angles[1],
 221                  player->cam_override_strength );
 222    v3_lerp( player->cam.pos, player->cam_override_pos,
 223             player->cam_override_strength, player->cam.pos );
 224
 225    /* portal transitions */
 226    player_camera_portal_correction( player );
 227 }
 228
 229 VG_STATIC void player_look( player_instance *player, v3f angles )
 230 {
 231    angles[2] = 0.0f;
 232
 233    v2f mouse_input;
 234    v2_copy( vg.mouse_delta, mouse_input );
 235    if( cl_invert_y )
 236       mouse_input[1] *= -1.0f;
 237    v2_muladds( angles, mouse_input, 0.0025f, angles );
 238
 239    if( vg_input.controller_should_use_trackpad_look ){
 240       static v2f last_input;
 241       static v2f vel;
 242       static v2f vel_smooth;
 243
 244       v2f input = { player->input_js2h->axis.value,
 245                     player->input_js2v->axis.value };
 246
 247       if( cl_invert_y )
 248          input[1] *= -1.0f;
 249
 250       if( (v2_length2(last_input) > 0.001f) && (v2_length2(input) > 0.001f) ){
 251          v2_sub( input, last_input, vel );
 252          v2_muls( vel, 1.0f/vg.time_delta, vel );
 253       }
 254       else{
 255          v2_zero( vel );
 256       }
 257
 258       v2_lerp( vel_smooth, vel, vg.time_delta*8.0f, vel_smooth );
 259
 260       v2_muladds( angles, vel_smooth, vg.time_delta, angles );
 261       v2_copy( input, last_input );
 262    }
 263    else{
 264       angles[0] += player->input_js2h->axis.value * vg.time_delta * 4.0f;
 265
 266       float input_y = player->input_js2v->axis.value * vg.time_delta * 4.0f;
 267       if( cl_invert_y )
 268          input_y *= -1.0f;
 269
 270       angles[1] += input_y;
 271    }
 272
 273    angles[1] = vg_clampf( angles[1], -VG_PIf*0.5f, VG_PIf*0.5f );
 274 }
 275
 276 #endif /* PLAYER_COMMON_C */