save.c

   1 #ifndef SAVE_C
   2 #define SAVE_C
   3
   4 #include "save.h"
   5 #include "addon.h"
   6 #include "vg/vg_msg.h"
   7 #include "vg/vg_log.h"
   8 #include "world.h"
   9
  10 static void savedata_file_write( savedata_file *file ){
  11    savedata_file *sav = file;
  12    FILE *fp = fopen( sav->path, "wb" );
  13    if( fp ){
  14       fwrite( sav->buf, sav->len, 1, fp );
  15       fclose( fp );
  16       vg_success( "savedata written to '%s'\n", sav->path );
  17    }
  18    else {
  19       vg_error( "Error writing savedata (%s)\n", sav->path );
  20    }
  21 }
  22
  23 static void savedata_group_write( savedata_group *group ){
  24    for( u32 i=0; i<group->file_count; i++ ){
  25       savedata_file_write( &group->files[i] );
  26    }
  27 }
  28
  29 static void savedata_file_read( savedata_file *file ){
  30    FILE *fp = fopen( file->path, "rb" );
  31    if( fp ){
  32       file->len = fread( file->buf, 1, sizeof(file->buf), fp );
  33       fclose( fp );
  34    }
  35    else{
  36       file->len = 0;
  37       vg_warn( "Error reading savedata (%s)\n", file->path );
  38    }
  39 }
  40
  41 static void skaterift_write_addon_alias( vg_msg *msg, const char *key,
  42                                          addon_alias *alias ){
  43    if( alias->workshop_id )
  44       vg_msg_wkvu64( msg, key, alias->workshop_id );
  45    else
  46       vg_msg_wkvstr( msg, key, alias->foldername );
  47 }
  48
  49 static void skaterift_write_viewslot( vg_msg *msg, const char *key,
  50                                       enum addon_type type, u16 cache_id ){
  51    if( !cache_id ) return;
  52
  53    struct addon_cache *cache = &addon_system.cache[type];
  54    addon_cache_entry *entry = vg_pool_item( &cache->pool, cache_id );
  55    addon_reg *reg = entry->reg_ptr;
  56
  57    if( reg )
  58       skaterift_write_addon_alias( msg, key, &reg->alias );
  59 }
  60
  61 static void skaterift_read_addon_alias( vg_msg *msg, const char *key,
  62                                         enum addon_type type,
  63                                         addon_alias *alias ){
  64    alias->foldername[0] = '\0';
  65    alias->workshop_id = 0;
  66    alias->type = type;
  67
  68    vg_msg_cmd kv = vg_msg_seekkv( msg, key, 0 );
  69    if( kv.code == k_vg_msg_kvstring ){
  70       vg_strncpy( kv.value, alias->foldername, sizeof(alias->foldername),
  71                   k_strncpy_allow_cutoff );
  72    }
  73    else
  74       alias->workshop_id = vg_msg_read_as_u64( &kv );
  75 }
  76
  77 static void skaterift_populate_world_savedata( savedata_file *file,
  78                                               enum world_purpose which ){
  79    file->path[0] = '\0';
  80    file->len = 0;
  81    addon_reg *reg = NULL;
  82    if( which == k_world_purpose_hub ) reg = world_static.addon_hub;
  83    else reg = world_static.addon_client;
  84
  85    if( !reg ){
  86       vg_error( "Tried to save unspecified world (reg was null)\n" );
  87       return;
  88    }
  89
  90    skaterift_world_get_save_path( which, file->path );
  91
  92    vg_msg sav = {0};
  93    sav.buf = file->buf;
  94    sav.max = sizeof(file->buf);
  95
  96    if( which == k_world_purpose_hub ){
  97       if( world_static.instances[0].status == k_world_status_loaded )
  98          world_entity_serialize( &world_static.instances[0], &sav );
  99    }
 100    else {
 101       for( u32 i=1; i<vg_list_size(world_static.instances); i++ ){
 102          world_instance *instance = &world_static.instances[i];
 103          if( instance->status == k_world_status_loaded ){
 104             world_entity_serialize( instance, &sav );
 105          }
 106       }
 107    }
 108
 109    file->len = sav.len;
 110 }
 111
 112 static void skaterift_populate_main_savedata( savedata_file *file ){
 113    strcpy( file->path, str_skaterift_main_save );
 114
 115    vg_msg sav = {0};
 116    sav.buf = file->buf;
 117    sav.max = sizeof(file->buf);
 118
 119    vg_msg_frame( &sav, "player" );
 120    {
 121       skaterift_write_viewslot( &sav, "board", k_addon_type_board,
 122                                 localplayer.board_view_slot );
 123       skaterift_write_viewslot( &sav, "playermodel", k_addon_type_player,
 124                                 localplayer.playermodel_view_slot );
 125    }
 126    vg_msg_end_frame( &sav );
 127
 128    vg_msg_frame( &sav, "world" );
 129    {
 130       addon_reg *reg = world_static.addon_client;
 131       if( reg && (world_static.active_instance > 0) ){
 132          skaterift_write_addon_alias( &sav, "alias", &reg->alias );
 133          vg_msg_wkvu32( &sav, "index", world_static.active_instance );
 134          vg_msg_wkvnum( &sav, "position", k_vg_msg_float|k_vg_msg_32b, 3,
 135                         localplayer.rb.co );
 136       }
 137    }
 138    vg_msg_end_frame( &sav );
 139
 140    file->len = sav.len;
 141 }
 142
 143 static int skaterift_autosave( int async ){
 144    if( async )
 145       if( !vg_loader_availible() ) return 0;
 146
 147    u32 save_files = 2;
 148    if( world_static.addon_client )
 149       save_files ++;
 150
 151    vg_linear_clear( vg_async.buffer );
 152    u32 size = sizeof(savedata_group) + sizeof(savedata_file) * save_files;
 153
 154    savedata_group *group;
 155    if( async ){
 156       size = vg_align8( size );
 157       group = vg_linear_alloc( vg_async.buffer, size );
 158    }
 159    else
 160       group = alloca( size );
 161
 162    group->file_count = save_files;
 163    skaterift_populate_main_savedata( &group->files[0] );
 164    skaterift_populate_world_savedata( &group->files[1], k_world_purpose_hub );
 165
 166    if( world_static.addon_client )
 167       skaterift_populate_world_savedata( &group->files[2],
 168                                           k_world_purpose_client );
 169
 170    if( async )
 171       vg_loader_start( (void *)savedata_group_write, group );
 172    else
 173       savedata_group_write( group );
 174
 175    return 1;
 176 }
 177
 178 static void skaterift_autosave_synchronous(void){
 179    skaterift_autosave(0);
 180 }
 181
 182 #endif /* SAVE_C */