src/musiclvl.cpp

   1 // ------------------------------------------------------------------
   2 // musiclvl.cpp
   3 // System for handling level's music
   4 // ------------------------------------------------------------------
   5 // By Kronoman - In loving memory of my father
   6 // Copyright (c) 2004, Kronoman
   7 // ------------------------------------------------------------------
   8
   9 #include <allegro.h>
  10 #include <dumb.h>
  11
  12 #include "musiclvl.h"
  13 #include "gerror.h"
  14 #include "filehelp.h"
  15
  16 CMusicLvl::CMusicLvl()
  17 {
  18         music_in_ram = NULL;
  19         data_loaded = NULL;
  20         free_memory();
  21 }
  22
  23 CMusicLvl::~CMusicLvl()
  24 {
  25         free_memory();
  26 }
  27
  28
  29 void CMusicLvl::free_memory()
  30 {
  31         if (data_loaded != NULL)
  32                 unload_datafile_object(data_loaded);
  33
  34         data_loaded = NULL;
  35
  36         music_in_ram = NULL;
  37
  38         file_loaded[0] = '\0';
  39
  40         index_loaded = -1;
  41 }
  42
  43 DUH *CMusicLvl::get_music(char *filename, int index)
  44 {
  45         char str[1024];
  46         DATAFILE *data = NULL;
  47         char tmp_file_buf[2048];
  48
  49         where_is_the_filename(tmp_file_buf, filename);
  50
  51         // use the cache if it is present
  52         if (index == index_loaded)
  53         {
  54                 if (ustrcmp(tmp_file_buf, file_loaded) == 0)
  55                         return music_in_ram;
  56         }
  57
  58         free_memory();
  59
  60         usprintf(str, "M%d_XM", index);
  61         data = load_datafile_object(tmp_file_buf, str);
  62
  63         if (data != NULL)
  64         {
  65                 usprintf(file_loaded, "%s", tmp_file_buf);
  66                 index_loaded = index;
  67
  68                 data_loaded = data;
  69                 music_in_ram = (DUH *)data->dat;
  70
  71                 return music_in_ram; // found OK
  72         }
  73
  74
  75         return NULL; // not found
  76 }