freecam.c

   1 #include "skaterift.h"
   2 #include "input.h"
   3
   4 static void freecam_preupdate(void){
   5    camera *cam = &skaterift.replay_freecam;
   6    v3f angles;
   7    v3_copy( cam->angles, angles );
   8    player_look( angles, 1.0f );
   9
  10    f32 decay = vg_maxf(0.0f,1.0f-vg.time_frame_delta*10.0f);
  11
  12    v3f d;
  13    v3_sub( angles, cam->angles, d );
  14    v3_muladds( skaterift.freecam_w, d, 20.0f, skaterift.freecam_w );
  15    v3_muls( skaterift.freecam_w, decay, skaterift.freecam_w );
  16    v3_muladds( cam->angles, skaterift.freecam_w, vg.time_frame_delta,
  17                cam->angles );
  18    cam->angles[1] = vg_clampf( cam->angles[1], -VG_PIf*0.5f,VG_PIf*0.5f);
  19
  20    camera_update_transform( cam );
  21
  22    v3f lookdir = { 0.0f, 0.0f, -1.0f },
  23        sidedir = { 1.0f, 0.0f,  0.0f };
  24
  25    m3x3_mulv( cam->transform, lookdir, lookdir );
  26    m3x3_mulv( cam->transform, sidedir, sidedir );
  27
  28    v2f input;
  29    joystick_state( k_srjoystick_steer, input );
  30    v2_muls( input, vg.time_frame_delta*6.0f*20.0f, input );
  31
  32    v3_muladds( skaterift.freecam_v, lookdir, -input[1],
  33                skaterift.freecam_v );
  34    v3_muladds( skaterift.freecam_v, sidedir, input[0],
  35                skaterift.freecam_v );
  36
  37    v3_muls( skaterift.freecam_v, decay, skaterift.freecam_v );
  38    v3_muladds( cam->pos,
  39                skaterift.freecam_v, vg.time_frame_delta, cam->pos );
  40 }
  41
  42 static int freecam_cmd( int argc, const char *argv[] ){
  43    if( argc ){
  44       skaterift.freecam = atoi(argv[0]);
  45
  46       if( skaterift.freecam ){
  47          camera_copy( &skaterift.cam, &skaterift.replay_freecam );
  48       }
  49    }
  50    return 0;
  51 }