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