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