save.c

   1 #include "skaterift.h"
   2 #include "save.h"
   3 #include "addon.h"
   4 #include "vg/vg_msg.h"
   5 #include "vg/vg_log.h"
   6 #include "vg/vg_loader.h"
   7 #include "world.h"
   8 #include "player.h"
   9
  10 static const char *str_skaterift_main_save = "save.bkv";
  11 static f64 last_autosave;
  12
  13 void savedata_file_write( savedata_file *file )
  14 {
  15    savedata_file *sav = file;
  16    FILE *fp = fopen( sav->path, "wb" );
  17    if( fp ){
  18       fwrite( sav->buf, sav->len, 1, fp );
  19       fclose( fp );
  20       vg_success( "savedata written to '%s'\n", sav->path );
  21    }
  22    else {
  23       vg_error( "Error writing savedata (%s)\n", sav->path );
  24    }
  25 }
  26
  27 void savedata_group_write( savedata_group *group )
  28 {
  29    for( u32 i=0; i<group->file_count; i++ ){
  30       savedata_file_write( &group->files[i] );
  31    }
  32 }
  33
  34 void savedata_file_read( savedata_file *file )
  35 {
  36    FILE *fp = fopen( file->path, "rb" );
  37    if( fp ){
  38       file->len = fread( file->buf, 1, sizeof(file->buf), fp );
  39       fclose( fp );
  40    }
  41    else{
  42       file->len = 0;
  43       vg_warn( "Error reading savedata (%s)\n", file->path );
  44    }
  45 }
  46
  47 static void skaterift_write_addon_alias( vg_msg *msg, const char *key,
  48                                          addon_alias *alias ){
  49    if( alias->workshop_id )
  50       vg_msg_wkvnum( msg, key, k_vg_msg_u64, 1, &alias->workshop_id );
  51    else
  52       vg_msg_wkvstr( msg, key, alias->foldername );
  53 }
  54
  55 static void skaterift_write_viewslot( vg_msg *msg, const char *key,
  56                                       enum addon_type type, u16 cache_id ){
  57    if( !cache_id ) return;
  58
  59    struct addon_cache *cache = &addon_system.cache[type];
  60    addon_cache_entry *entry = vg_pool_item( &cache->pool, cache_id );
  61    addon_reg *reg = entry->reg_ptr;
  62
  63    if( reg )
  64       skaterift_write_addon_alias( msg, key, &reg->alias );
  65 }
  66
  67 void skaterift_read_addon_alias( vg_msg *msg, const char *key,
  68                                  enum addon_type type,
  69                                  addon_alias *alias )
  70 {
  71    alias->foldername[0] = '\0';
  72    alias->workshop_id = 0;
  73    alias->type = type;
  74
  75    vg_msg_cmd kv;
  76    if( vg_msg_getkvcmd( msg, key, &kv ) ){
  77       if( kv.code == k_vg_msg_kvstring ){
  78          vg_strncpy( kv.value, alias->foldername, sizeof(alias->foldername),
  79                      k_strncpy_allow_cutoff );
  80       }
  81       else
  82          vg_msg_cast( kv.value, kv.code, &alias->workshop_id, k_vg_msg_u64 );
  83    }
  84 }
  85
  86 static void skaterift_populate_world_savedata( savedata_file *file,
  87                                                enum world_purpose which ){
  88    file->path[0] = '\0';
  89    file->len = 0;
  90    addon_reg *reg = world_static.instance_addons[ which ];
  91
  92    if( !reg ){
  93       vg_error( "Tried to save unspecified world (reg was null)\n" );
  94       return;
  95    }
  96
  97    skaterift_world_get_save_path( which, file->path );
  98
  99    vg_msg sav;
 100    vg_msg_init( &sav, file->buf, sizeof(file->buf) );
 101
 102    world_instance *instance = &world_static.instances[which];
 103    world_entity_serialize( instance, &sav );
 104
 105    vg_msg_frame( &sav, "player" );
 106    {
 107       vg_msg_wkvnum( &sav, "position", k_vg_msg_float|k_vg_msg_32b, 3,
 108                      (which == world_static.active_instance)?
 109                            localplayer.rb.co:
 110                            instance->player_co );
 111    }
 112    vg_msg_end_frame( &sav );
 113
 114    file->len = sav.cur.co;
 115 }
 116
 117 static void skaterift_populate_main_savedata( savedata_file *file )
 118 {
 119    strcpy( file->path, str_skaterift_main_save );
 120
 121    vg_msg sav;
 122    vg_msg_init( &sav, file->buf, sizeof(file->buf) );
 123    vg_msg_wkvnum( &sav, "ach", k_vg_msg_u32, 1, &skaterift.achievements );
 124
 125    vg_msg_frame( &sav, "player" );
 126    {
 127       skaterift_write_viewslot( &sav, "board", k_addon_type_board,
 128                                 localplayer.board_view_slot );
 129       skaterift_write_viewslot( &sav, "playermodel", k_addon_type_player,
 130                                 localplayer.playermodel_view_slot );
 131    }
 132    vg_msg_end_frame( &sav );
 133
 134    file->len = sav.cur.co;
 135 }
 136
 137 void skaterift_read_main_savedata( savedata_file *file )
 138 {
 139    strcpy( file->path, str_skaterift_main_save );
 140    savedata_file_read( file );
 141 }
 142
 143 int skaterift_autosave( int async )
 144 {
 145    if( async )
 146       if( !vg_loader_availible() ) return 0;
 147
 148    u32 save_files = 2;
 149    if( world_static.instances[k_world_purpose_client].status
 150          == k_world_status_loaded ){
 151       save_files ++;
 152    }
 153
 154    vg_linear_clear( vg_async.buffer );
 155    u32 size = sizeof(savedata_group) + sizeof(savedata_file) * save_files;
 156
 157    savedata_group *group;
 158    if( async ){
 159       size = vg_align8( size );
 160       group = vg_linear_alloc( vg_async.buffer, size );
 161    }
 162    else
 163       group = alloca( size );
 164
 165    group->file_count = save_files;
 166    skaterift_populate_main_savedata( &group->files[0] );
 167    skaterift_populate_world_savedata( &group->files[1], k_world_purpose_hub );
 168
 169    if( world_static.instances[ k_world_purpose_client ].status
 170          == k_world_status_loaded ){
 171       skaterift_populate_world_savedata( &group->files[2],
 172                                           k_world_purpose_client );
 173    }
 174
 175    if( async )
 176       vg_loader_start( (void *)savedata_group_write, group );
 177    else
 178       savedata_group_write( group );
 179
 180    return 1;
 181 }
 182
 183 void skaterift_autosave_synchronous(void)
 184 {
 185    skaterift_autosave(0);
 186 }
 187
 188 void skaterift_autosave_update(void)
 189 {
 190    if( vg.time - last_autosave > 20.0 ){
 191       if( skaterift_autosave(1) ){
 192          last_autosave = vg.time;
 193       }
 194    }
 195 }