freecam.c

   1 #include "skaterift.h"
   2 #include "player.h"
   3 #include "player_render.h"
   4 #include "player_replay.h"
   5 #include "input.h"
   6
   7 void freecam_preupdate(void)
   8 {
   9    vg_camera *cam = &player_replay.replay_freecam;
  10    v3f angles;
  11    v3_copy( cam->angles, angles );
  12    player_look( angles, 1.0f );
  13
  14    f32 decay = vg_maxf(0.0f,1.0f-vg.time_frame_delta*10.0f);
  15
  16    v3f d;
  17    v3_sub( angles, cam->angles, d );
  18    v3_muladds( player_replay.freecam_w, d, 20.0f, player_replay.freecam_w );
  19    v3_muls( player_replay.freecam_w, decay, player_replay.freecam_w );
  20    v3_muladds( cam->angles, player_replay.freecam_w, vg.time_frame_delta,
  21                cam->angles );
  22    cam->angles[1] = vg_clampf( cam->angles[1], -VG_PIf*0.5f,VG_PIf*0.5f);
  23
  24    vg_camera_update_transform( cam );
  25
  26    v3f lookdir = { 0.0f, 0.0f, -1.0f },
  27        sidedir = { 1.0f, 0.0f,  0.0f };
  28
  29    m3x3_mulv( cam->transform, lookdir, lookdir );
  30    m3x3_mulv( cam->transform, sidedir, sidedir );
  31
  32    v2f input;
  33    joystick_state( k_srjoystick_steer, input );
  34    v2_muls( input, vg.time_frame_delta*6.0f*20.0f, input );
  35
  36    v3_muladds( player_replay.freecam_v, lookdir, -input[1],
  37                player_replay.freecam_v );
  38    v3_muladds( player_replay.freecam_v, sidedir, input[0],
  39                player_replay.freecam_v );
  40
  41    v3_muls( player_replay.freecam_v, decay, player_replay.freecam_v );
  42    v3_muladds( cam->pos,
  43                player_replay.freecam_v, vg.time_frame_delta, cam->pos );
  44 }