builtin/mainmenu/textures.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_texture = {}
  20
  21 --------------------------------------------------------------------------------
  22 function mm_texture.init()
  23         mm_texture.defaulttexturedir = core.get_texturepath() .. DIR_DELIM .. "base" ..
  24                                                 DIR_DELIM .. "pack" .. DIR_DELIM
  25         mm_texture.basetexturedir = mm_texture.defaulttexturedir
  26
  27         mm_texture.texturepack = core.settings:get("texture_path")
  28
  29         mm_texture.gameid = nil
  30 end
  31
  32 --------------------------------------------------------------------------------
  33 function mm_texture.update(tab,gamedetails)
  34         if tab ~= "singleplayer" then
  35                 mm_texture.reset()
  36                 return
  37         end
  38
  39         if gamedetails == nil then
  40                 return
  41         end
  42
  43         mm_texture.update_game(gamedetails)
  44 end
  45
  46 --------------------------------------------------------------------------------
  47 function mm_texture.reset()
  48         mm_texture.gameid = nil
  49         local have_bg      = false
  50         local have_overlay = mm_texture.set_generic("overlay")
  51
  52         if not have_overlay then
  53                 have_bg = mm_texture.set_generic("background")
  54         end
  55
  56         mm_texture.clear("header")
  57         mm_texture.clear("footer")
  58         core.set_clouds(false)
  59
  60         mm_texture.set_generic("footer")
  61         mm_texture.set_generic("header")
  62
  63         if not have_bg then
  64                 if core.settings:get_bool("menu_clouds") then
  65                         core.set_clouds(true)
  66                 else
  67                         mm_texture.set_dirt_bg()
  68                 end
  69         end
  70 end
  71
  72 --------------------------------------------------------------------------------
  73 function mm_texture.update_game(gamedetails)
  74         if mm_texture.gameid == gamedetails.id then
  75                 return
  76         end
  77
  78         local have_bg      = false
  79         local have_overlay = mm_texture.set_game("overlay",gamedetails)
  80
  81         if not have_overlay then
  82                 have_bg = mm_texture.set_game("background",gamedetails)
  83         end
  84
  85         mm_texture.clear("header")
  86         mm_texture.clear("footer")
  87         core.set_clouds(false)
  88
  89         if not have_bg then
  90
  91                 if core.settings:get_bool("menu_clouds") then
  92                         core.set_clouds(true)
  93                 else
  94                         mm_texture.set_dirt_bg()
  95                 end
  96         end
  97
  98         mm_texture.set_game("footer",gamedetails)
  99         mm_texture.set_game("header",gamedetails)
 100
 101         mm_texture.gameid = gamedetails.id
 102 end
 103
 104 --------------------------------------------------------------------------------
 105 function mm_texture.clear(identifier)
 106         core.set_background(identifier,"")
 107 end
 108
 109 --------------------------------------------------------------------------------
 110 function mm_texture.set_generic(identifier)
 111         --try texture pack first
 112         if mm_texture.texturepack ~= nil then
 113                 local path = mm_texture.texturepack .. DIR_DELIM .."menu_" ..
 114                                                                                 identifier .. ".png"
 115                 if core.set_background(identifier,path) then
 116                         return true
 117                 end
 118         end
 119
 120         if mm_texture.defaulttexturedir ~= nil then
 121                 local path = mm_texture.defaulttexturedir .. DIR_DELIM .."menu_" ..
 122                                                                                 identifier .. ".png"
 123                 if core.set_background(identifier,path) then
 124                         return true
 125                 end
 126         end
 127
 128         return false
 129 end
 130
 131 --------------------------------------------------------------------------------
 132 function mm_texture.set_game(identifier, gamedetails)
 133
 134         if gamedetails == nil then
 135                 return false
 136         end
 137
 138         if mm_texture.texturepack ~= nil then
 139                 local path = mm_texture.texturepack .. DIR_DELIM ..
 140                         gamedetails.id .. "_menu_" .. identifier .. ".png"
 141                 if core.set_background(identifier, path) then
 142                         return true
 143                 end
 144         end
 145
 146         -- Find out how many randomized textures the game provides
 147         local n = 0
 148         local filename
 149         local menu_files = core.get_dir_list(gamedetails.path .. DIR_DELIM .. "menu", false)
 150         for i = 1, #menu_files do
 151                 filename = identifier .. "." .. i .. ".png"
 152                 if table.indexof(menu_files, filename) == -1 then
 153                         n = i - 1
 154                         break
 155                 end
 156         end
 157         -- Select random texture, 0 means standard texture
 158         n = math.random(0, n)
 159         if n == 0 then
 160                 filename = identifier .. ".png"
 161         else
 162                 filename = identifier .. "." .. n .. ".png"
 163         end
 164
 165         local path = gamedetails.path .. DIR_DELIM .. "menu" ..
 166                 DIR_DELIM .. filename
 167         if core.set_background(identifier, path) then
 168                 return true
 169         end
 170
 171         return false
 172 end
 173
 174 function mm_texture.set_dirt_bg()
 175         if mm_texture.texturepack ~= nil then
 176                 local path = mm_texture.texturepack .. DIR_DELIM .."default_dirt.png"
 177                 if core.set_background("background", path, true, 128) then
 178                         return true
 179                 end
 180         end
 181
 182         -- Use universal fallback texture in textures/base/pack
 183         local minimalpath = defaulttexturedir .. "menu_bg.png"
 184         core.set_background("background", minimalpath, true, 128)
 185 end