builtin/mainmenu/game_theme.lua

   1 --Minetest
   2 --Copyright (C) 2013 sapier
   3 --
   4 --This program is free software; you can redistribute it and/or modify
   5 --it under the terms of the GNU Lesser General Public License as published by
   6 --the Free Software Foundation; either version 2.1 of the License, or
   7 --(at your option) any later version.
   8 --
   9 --This program is distributed in the hope that it will be useful,
  10 --but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 --MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 --GNU Lesser General Public License for more details.
  13 --
  14 --You should have received a copy of the GNU Lesser General Public License along
  15 --with this program; if not, write to the Free Software Foundation, Inc.,
  16 --51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17
  18
  19 mm_game_theme = {}
  20
  21 --------------------------------------------------------------------------------
  22 function mm_game_theme.init()
  23         mm_game_theme.defaulttexturedir = core.get_texturepath_share() .. DIR_DELIM .. "base" ..
  24                                                 DIR_DELIM .. "pack" .. DIR_DELIM
  25         mm_game_theme.basetexturedir = mm_game_theme.defaulttexturedir
  26
  27         mm_game_theme.texturepack = core.settings:get("texture_path")
  28
  29         mm_game_theme.gameid = nil
  30
  31         mm_game_theme.music_handle = nil
  32 end
  33
  34 --------------------------------------------------------------------------------
  35 function mm_game_theme.update(tab,gamedetails)
  36         if tab ~= "singleplayer" then
  37                 mm_game_theme.reset()
  38                 return
  39         end
  40
  41         if gamedetails == nil then
  42                 return
  43         end
  44
  45         mm_game_theme.update_game(gamedetails)
  46 end
  47
  48 --------------------------------------------------------------------------------
  49 function mm_game_theme.reset()
  50         mm_game_theme.gameid = nil
  51         local have_bg      = false
  52         local have_overlay = mm_game_theme.set_generic("overlay")
  53
  54         if not have_overlay then
  55                 have_bg = mm_game_theme.set_generic("background")
  56         end
  57
  58         mm_game_theme.clear("header")
  59         mm_game_theme.clear("footer")
  60         core.set_clouds(false)
  61
  62         mm_game_theme.set_generic("footer")
  63         mm_game_theme.set_generic("header")
  64
  65         if not have_bg then
  66                 if core.settings:get_bool("menu_clouds") then
  67                         core.set_clouds(true)
  68                 else
  69                         mm_game_theme.set_dirt_bg()
  70                 end
  71         end
  72
  73         if mm_game_theme.music_handle ~= nil then
  74                 core.sound_stop(mm_game_theme.music_handle)
  75         end
  76 end
  77
  78 --------------------------------------------------------------------------------
  79 function mm_game_theme.update_game(gamedetails)
  80         if mm_game_theme.gameid == gamedetails.id then
  81                 return
  82         end
  83
  84         local have_bg      = false
  85         local have_overlay = mm_game_theme.set_game("overlay",gamedetails)
  86
  87         if not have_overlay then
  88                 have_bg = mm_game_theme.set_game("background",gamedetails)
  89         end
  90
  91         mm_game_theme.clear("header")
  92         mm_game_theme.clear("footer")
  93         core.set_clouds(false)
  94
  95         if not have_bg then
  96
  97                 if core.settings:get_bool("menu_clouds") then
  98                         core.set_clouds(true)
  99                 else
 100                         mm_game_theme.set_dirt_bg()
 101                 end
 102         end
 103
 104         mm_game_theme.set_game("footer",gamedetails)
 105         mm_game_theme.set_game("header",gamedetails)
 106
 107         mm_game_theme.gameid = gamedetails.id
 108 end
 109
 110 --------------------------------------------------------------------------------
 111 function mm_game_theme.clear(identifier)
 112         core.set_background(identifier,"")
 113 end
 114
 115 --------------------------------------------------------------------------------
 116 function mm_game_theme.set_generic(identifier)
 117         --try texture pack first
 118         if mm_game_theme.texturepack ~= nil then
 119                 local path = mm_game_theme.texturepack .. DIR_DELIM .."menu_" ..
 120                                                                                 identifier .. ".png"
 121                 if core.set_background(identifier,path) then
 122                         return true
 123                 end
 124         end
 125
 126         if mm_game_theme.defaulttexturedir ~= nil then
 127                 local path = mm_game_theme.defaulttexturedir .. DIR_DELIM .."menu_" ..
 128                                                                                 identifier .. ".png"
 129                 if core.set_background(identifier,path) then
 130                         return true
 131                 end
 132         end
 133
 134         return false
 135 end
 136
 137 --------------------------------------------------------------------------------
 138 function mm_game_theme.set_game(identifier, gamedetails)
 139
 140         if gamedetails == nil then
 141                 return false
 142         end
 143
 144         mm_game_theme.set_music(gamedetails)
 145
 146         if mm_game_theme.texturepack ~= nil then
 147                 local path = mm_game_theme.texturepack .. DIR_DELIM ..
 148                         gamedetails.id .. "_menu_" .. identifier .. ".png"
 149                 if core.set_background(identifier, path) then
 150                         return true
 151                 end
 152         end
 153
 154         -- Find out how many randomized textures the game provides
 155         local n = 0
 156         local filename
 157         local menu_files = core.get_dir_list(gamedetails.path .. DIR_DELIM .. "menu", false)
 158         for i = 1, #menu_files do
 159                 filename = identifier .. "." .. i .. ".png"
 160                 if table.indexof(menu_files, filename) == -1 then
 161                         n = i - 1
 162                         break
 163                 end
 164         end
 165         -- Select random texture, 0 means standard texture
 166         n = math.random(0, n)
 167         if n == 0 then
 168                 filename = identifier .. ".png"
 169         else
 170                 filename = identifier .. "." .. n .. ".png"
 171         end
 172
 173         local path = gamedetails.path .. DIR_DELIM .. "menu" ..
 174                 DIR_DELIM .. filename
 175         if core.set_background(identifier, path) then
 176                 return true
 177         end
 178
 179         return false
 180 end
 181
 182 --------------------------------------------------------------------------------
 183 function mm_game_theme.set_dirt_bg()
 184         if mm_game_theme.texturepack ~= nil then
 185                 local path = mm_game_theme.texturepack .. DIR_DELIM .."default_dirt.png"
 186                 if core.set_background("background", path, true, 128) then
 187                         return true
 188                 end
 189         end
 190
 191         -- Use universal fallback texture in textures/base/pack
 192         local minimalpath = defaulttexturedir .. "menu_bg.png"
 193         core.set_background("background", minimalpath, true, 128)
 194 end
 195
 196 --------------------------------------------------------------------------------
 197 function mm_game_theme.set_music(gamedetails)
 198         if mm_game_theme.music_handle ~= nil then
 199                 core.sound_stop(mm_game_theme.music_handle)
 200         end
 201         local music_path = gamedetails.path .. DIR_DELIM .. "menu" .. DIR_DELIM .. "theme"
 202         mm_game_theme.music_handle = core.sound_play(music_path, true)
 203 end